WEET International Marking and Identification of SMD Chip Diode Rectifiers

Marking and Identification of SMD/chip diodes


1. SMD diode model marking and polarity identification


The model of SMD diode is marked with letters, numerical codes or letter + numerical code marking method and color (code) marking method.


For example, the electrical parameters of the printed word "A3" are as follows: PD=0.15W; IF=0.1A; VB=80V; Trr=4ns. In the color labeling method, the model is mainly found by the color marked on the negative side, and then the parameter value is found by the model.


SMD diode polarity identification method: glass tubular SMD diode, the red end is the positive electrode, the black end is the negative electrode; the rectangular SMD diode, the one end with the white horizontal line is the negative electrode.


2. SMD diode quality measurement


A normal SMD diode, measured on the circuit, has a small forward resistance and a large reverse resistance, and there is a significant difference in resistance between the two. Disconnect the circuit, if measured with a pointer multimeter, the forward resistance is about 3kΩ, and the reverse resistance is hundreds of kiloohms or infinity; The voltage drop is infinite.


3. SMD diode identification on board


On the circuit board, the component number of SMD diode generally starts with the letter D, such as D1, D2, etc., or VD, such as VD1, VD2, etc.; or DD, such as DD1, DD2, etc.

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WEET Holiday Notice for China Middle Autumn Day in September and National Day in October 2022

China Middle Autumn Day: Holiday from 10th to 12th,Sept. Resume work on 13th,Sept


China National Day: Holiday from 1st to 7th,Oct. Resume work on 8th Oct.


Please send your inquires as usual, we will reply you as our earliest, thank you.


Welcome you enjoy holiday together with WEET team.


WEET Popular DIP Diodes And Rectifiers List https://weetcl.com/WEET_Popular_DIP_Diodes_and_Rectifiers_List/

WEET Strong SMD Diodes And Rectifiers List https://weetcl.com/WEET_Strong_SMD_Diodes_and_Rectifiers_List/


WEET Audio Capacitors Factory: https://www.musicaps.com/Factory-View.html

WEET Audio Capacitors Stock: https://www.musicaps.com/Factory-Stock.html

WEET-Holiday-Notice-for-China-Middle-Autumn-Day-in-September-and-National-Day-in-October-2022

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WEET Surface Mount SMD Diode Rectifiers Bridge Rectifiers Production Line Wholesale Price Market Quo

WEET Surface Mount SMD Diode Rectifiers Bridge Rectifiers Production Line Wholesale Price Market Quotation Factory Supply


Type

US1A, US1B,   US1D, US1G, US1J, US1K, US1M

US2A, US2B,   US2D, US2G, US2J, US2K, US2M

ES1A, ES1B,   ES1C, ES1D, ES1E, ES1G, ES1J

ES2A, ES2B,   ES2C, ES2D, ES2E, ES2G, ES2J

SS24, SS25,   SS26; SK24, SK25, SK26

SS210, SK210

SS2150, SK2150

SS2200, SK2200

SS34, SS35,   SS36; SK34, SK35, SK36

SS310, SK310

SS3150, SK3150

SS3200, SK3200

SS54, SS55,   SS56; SK54, SK55, SK56

SS510, SK510

SS5150, SK5150

SS5200, SK5200

GS3A, GS3B,   GS3D, GS3G, GS3J, GS3K, GS3M

RS3A, RS3B,   RS3D, RS3G, RS3J, RS3K, RS3M

US3A, US3B,   US3D, US3G, US3J, US3K, US3M

MUR2060

MUR3020

SS110

SS1150, SK1150

SS1200, SK1200

GS2A, GS2B,   GS2D, GS2G, GS2J, GS2K, GS2M

RS2A, RS2B,   RS2D, RS2G, RS2J, RS2K, RS2M

LL4148

BZT52C2V4   Series

MB1F, MB2F, MB3F, MB4F, MB6F, MB8F, MB10F

MB1S, MB2S, MB3S, MB4S, MB6S, MB8S, MB10S

ABS1, ABS2, ABS3, ABS4, ABS6, ABS8, ABS10

DBS1, DBS2, DBS4, DBS6, DBS8, DBS10

TB1S, TB2S, TB3S, TB4S, TB6S, TB8S, TB10S

ABS201, ABS202, ABS203, ABS204, ABS206, ABS208, ABS210

DB106S, DB107S

DB155S, DB156S, DB157S

DB205S, DB206S, DB207S

DF06S, DF08S, DF10S

BAV21WS

SS8050(Y1)

BAT54C

MMBT5401

MMBT5551

1N4148W

1N4148WS

MBR540YS,   MBR560YS, MBR540DS, MBR540YS

MBR5100YS,   MBR5100DS

MBR5150YS,   MBR5150DS

MBR5200YS,   MBR5200DS

MBR640CS,   MBR660CS

MBR6100CS

MBR6150CS

MBR6200CS

MBR1040CS,   MBR1060CS

MBR10100CS

MBR10150CS

MBR10200CS

MBR2040CS,   MBR2060CS

MBR20100CS

MBR20150CS

MBR20200CS

MUR520YS,   MUR560YS

MUR580YS

MUR820YS,   MUR860YS

MUR880YS

MUR1020YS,   MUR1060YS

MUR1080YS

MUR620YS,   MUR620DS

MUR640YS,   MUR640DS

MUR660YS,   MUR660DS

MUR820YS,   MUR820DS

MUR830YS,   MUR830DS

MUR840YS,   MUR840DS

MUR860YS,MUR860DS

MUR1020YS,   MUR1020DS

MUR1030YS,   MUR1030DS

MUR1040YS,   MUR1040DS

MUR1240YS,   MUR1240DS

MUR1540YS,   MUR1540DS

MUR1060YS,   MUR1060DS

MUR1520YS,   MUR1520DS

MUR1560YS,   MUR1560DS

MUR1020CS,   MUR1220CS

MUR1040CS,   MUR1240CS

MUR1060CS,   MUR1260CS

MUR1620CS

MUR1640CS

MUR1660CS

MUR2020CS

MUR2040CS

MUR3040CS

MBR1040CT,   MBR1060CT

MBR10100CT

MBR10150CT

MBR10200CT

MBR1640CT,   MBR1660CT

MBR16100CT

MBR16150CT

MBR16200CT

MBR2040CT,   MBR2060CT

MBR20100CT

MBR20150CT

MBR20200CT

MBR3040CT,   MBR3060CT

MBR30100CT

MBR30150CT

MBR30200CT

MBR4040CT,   MBR4060CT

MBR40100CT

MBR40150CT,   MBR40200CT

MBR6040CT,   MBR6060CT

MBR60100CT

MBR60150CT,   MBR60200CT

MUR820, MUR860

MUR880

MUR1080

MURF1080

MUR2020CT,   MUR2060CT

MUR1020,   MUR1060

MUR1620,   MUR1660

MUR2020,   MUR2060

MUR820

MUR840

MUR860

MUR1020

MUR1040

MUR1060

MUR1520

MUR1540

MUR1560

MUR1020,   MUR1220

MUR1040,   MUR1240

MUR1060,   MUR1260

MUR1620

MUR1640

MUR1660

MUR2020

MUR2040

MUR3040

SB540, SB560

SB5100

SB5150

SB5200

SB1045, SB1060

SB10100

SB10200

SB1545

SB1560

SB15100

SB15150,   SB15200

SB2045, SB2060

SB20100

SB20150,   SB20200

STD-4A

STD-5A

STD-6A

STD-8A

FR-4A

FR-5A

FR-6A

FR-8A

HER/SF-4A

HER/SF-5A

HER/SF-6A

HER/SF-8A

M7

GS1M 

S1M 

GS2MA

S2M

GS2M

RS1M

RS2M  

ES1J

SS14,SK14

SS14, SK16

P4KE SMAJ   Sereis

GS1A, GS1B,   GS1D, GS1G, GS1J, GS1K, GS1M; M7

RS1A, RS1B,   RS1D, RS1G, RS1J, RS1K, RS1M

SS14, SS15,   SS16; SK14, SK15, SK16

ES3A, ES3B,   ES3C, ES3D, ES3E, ES3G, ES3J

GS5A, GS5B,   GS5D, GS5G, GS5J, GS5K, GS5M

GS6A, GS6B,   GS6D, GS6G, GS6J, GS6K, GS6M

GS8A, GS8B,   GS8D, GS8G, GS8J, GS8K, GS8M

GS10A, GS10B,   GS10D, GS10G, GS10J, GS10K, GS10M

RS5A, RS5B,   RS5D, RS5G, RS5J, RS5K, RS5M

RS6A, RS6B,   RS6D, RS6G, RS6J, RS6K, RS6M

RS8A, RS8B,   RS8D, RS8G, RS8J, RS8K, RS8M

RS10A, RS10B,   RS10D, RS10G, RS10J, RS10K, RS10M

US5A, US5B,   US5D, US5G, US5J, US5K, US5M

US6A, US6B,   US6D, US6G, US6J, US6K, US6M

US8A, US8B,   US8D, US8G, US8J, US8K, US8M

US10A, US10B,   US10D, US10G, US10J, US10K, US10M

ES3A, ES3B,   ES3D, ES3G, ES3J, ES3K, ES3M

ES5A, ES5B,   ES5D, ES5G, ES5J, ES5K, ES5M

ES6A, ES6B,   ES6D, ES6G, ES6J, ES6K, ES6M

ES8A, ES8B,   ES8D, ES8G, ES8J, ES8K, ES8M

SS3150,   SS3200; SK3150, SK3200

SS84, SS85,   SS86; SK84, SK85, SK86

SS810, SK810

SM4001,   SM4002, SM4003, SM4004, SM4005, SM4006, SM4007

BC817-16V(print 6A)

BC817-25V(print 6B)

BC817-40V(print   6C)

BC807-16(print   5A)

BC807-25(print   5B)

BC807-40(print   5C)

ZM4740

ZM4748

1N4742A 

BZV55C serie 2.4-30V   (BZV55C2V4,BZV55C2V7...BZV55C15,BZV55C27,BZV55C30)

BAV99

BC847C

BC847B

BC857C

BC857B

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WEET Through Hole DIP Diode Rectifiers Bridge Rectifiers Production Line Wholesale Price

WEET Through Hole DIP Diode Rectifiers Bridge Rectifiers Production Line Wholesale Price Market Quotation Factory Supply


Type
MUR1060, MUR1260
1N4007-0.53MM leaded
1N4007-0.6MM leaded
1N4007-0.7MM leaded
FR302, FR303, FR304, FR305, FR306, FR307
SR8200,SB8200,SR10200
GBP210
GBP310
KBL610
MUR1020,   MUR1040, MUR1060
MURF1020,   MURF1040, MURF1060
DB101, DB102, DB103, DB104, DB105, DB106, DB107
DB151, DB152, DB153, DB154, DB155, DB156, DB157
DB201, DB202, DB203, DB204, DB205, DB206, DB207
KBL410
GBU410
GBU610
GBU810
GBU1010
GBJ2510
1.5KE serie   5-9.1V (1.5KE6.8, 1.5KE7.5, 1.5KE8.2, 1.5KE9.1)
1.5KE serie 10-220V   (1.5KE10...1.5KE22...1.5KE36...1.5KE47...1.5KE51...1.5KE68...1.5KE75...
    1.5KE82...1.5KE91...1.5KE100...1.5KE170...1.5KE220...)
1.5KE serie   above 220V
MBR30100CT
MBR30150CT
MBR30200CT
MBR40100CT
MBRF6040CT,   MBRF6060CT
MBR60100CT
MBR60150CT,   MBR60200CT
MBRF60150CT,   MBRF60200CT
MBRF2040CT,   MBRF2050CT, MBRF2060CT
MBR2040CT,   MBR2050CT, MBR2060CT
MBR20100CT
MBRF20100CT
MBR20150CT
MBRF20150CT
MBR20200CT
MBRF20200CT
MBR3040CT,   MBR3050CT, MBR3060CT
MBRF3040CT,   MBRF3050CT, MBRF3060CT
MBRF30100CT
MBRF30150CT
MBRF30200CT
MBRF60100CT
MUR820
MUR840
MUR860
MUR1020
MUR1040
MUR1060
MUR1520
MUR1540
MUR1560
MUR1020,  MUR1220
MUR1040,  MUR1240
MUR1620
MUR1640
MUR1660
MUR2020
MUR2040
MUR2060
MUR3020
MUR3040
MBR4040CT,   MBR4060CT
MBR40150CT
MBR40200CT
EM513/EM516
RL202, RL203,   RL204, RL205, RL206, RL207
RL251, RL252,   RL253, RL254, RL255, RL256, RL257
BYV26C, BYV26E
1N5819
SR160
1N5408G
6A1, 6A2, 6A4,   6A6, 6A8, 6A10
6A10G
SB5100, SR5100
SB5150, SR5150
SB5200, SR5200
1F7
1W Zener Diode
2W Zener Diode
R4000
MBR1040CT,   MBR1045CT, MBR1060CT
MBRF1040CT,   MBRF1050CT, MBRF1060CT
MBR10100CT
MBRF10100CT
MBR10150CT
MBRF10150CT
MBR10200CT
MBRF10200CT
MBR1640CT,   MBR1650CT, MBR1660CT
MBRF1640CT,   MBRF1650CT, MBRF1660CT
MBR16100CT
MBRF16100CT
MBR16150CT
MBRF16150CT
MBR16200CT
MBRF16200CT
MBR4040CT,   MBR4050CT, MBR4060CT
MBRF4040CT,   MBRF4050CT, MBRF4060CT
MBRF40100CT
MBR40150CT,   MBR40200CT
MBRF40150CT,   MBRF40200CT
MBR6040CT,MBR6060CT
MUR820, MUR860
MURF820,   MURF840, MURF860
MUR880
MURF880
MUR1080
MURF1080
MUR1620,   MUR1630, MUR1640, MUR1650, MUR1660
MURF1620,   MURF1630, MURF1640, MURF1650, MURF1660
MUR2020CT,   MUR2040CT, MUR2060CT
MURF2020CT,   MURF2040CT, MURF2060CT
MUR1620,   MUR1640, MUR1660
MURF1620,   MURF1640, MURF1660
MUR2020,   MUR2030, MUR2040, MUR2060
MURF2020,   MURF2030, MURF2040, MURF2060
MBRF3040CT,   MBRF3045CT, MBRF3050CT, MBRF3060CT
MBR5040CT,   MBR5060CT
MBR50100CT
MBR50150CT,   MBR50200CT
MBRF5040CT,   MBRF5060CT
MBRF50100CT
MBRF50150CT,   MBRF50200CT
MBR6040CT,   MBR6060CT
MURF3020,   MURF3040, MURF3060
MURF4020,   MURF4040, MURF4060
MUR3060
R2000
FR107
FR102,,FR103,   FR104, FR105, FR106, FR107
FR102G,   FR103G, FR104G, FR105G, FR106G, FR107G
HER102,   HER103, HER104, HER105, HER106, HER107, HER108
HER102G,   HER103G, HER104G, HER105G, HER106G, HER107G, HER108G
UF4001,   UF4002, UF4003, UF4004, UF4005, UF4006, UF4007
UF4001G,   UF4002G, UF4003G, UF4004G, UF4005G, UF4006G, UF4007G
SF12, SF13,   SF14, SF15, SF16, SF18
SF12G, SF13G,   SF14G, SF15G, SF16G, SF18G
FR201, FR202,   FR203, FR204, FR205, FR206, FR207
FR201G,   FR202G, FR203G, FR204G, FR205G, FR206G, FR207G
HER202,   HER203, HER204, HER205, HER206, HER207, HER208
HER202G,   HER203G, HER204G, HER205G, HER206G, HER207G, HER208G
SF24, SF25,   SF26, SF27, SF28
SF24G, SF25G,   SF26G, SF27G, SF28G
SR180, SR1100
SR1150
SR1200
SR240, SR250,   SR260
SR280, SR2100
SR2150
SR2200
1N5401,   1N5402, 1N5403, 1N5404, 1N5405, 1N5406, 1N5407, 1N5408
BY255
5A10G
FR309
FR307G
BY299
HER302,   HER303, HER304, HER305, HER306, HER307, HER308
HER302G,   HER303G, HER304G, HER305G, HER306G, HER307G, HER308G
UF5402,   UF5404, UF5406, UF5407, UF5408
UF5402G,   UF5404G, UF5406G, UF5407G, UF5408G
SF34, SF35,   SF36, SF37, SF38
SF34G, SF35G,   SF36G, SF37G, SF38G
MUR420,   MUR440, MUR460, MUR480, MUR4100
HER502,   HER503, HER504, HER505, HER506, HER507
HER502G,   HER503G, HER504G, HER505G, HER506G, HER507G, HER508G
SF52G, SF53G,   SF54G, SF55G, SF56G, SF57G, SF58G
SF59G
ER602, ER603,   ER604, ER605, ER606
ER608
SB340, SB350,   SB360; SR340, SR350, SR360
SB3100, SR3100
SB3150,   SB3200; SR3150, SR3200
SB540, SB550,   SB560; SR540, SR550, SR560
SR8100,SB8100,SR10100
 SR845, SR850, SR860; SB845, SB850, SB860;   SR1045, SR1050, SR1060
FR602, FR603,   FR604, FR605, FR606, FR607
HER602,   HER603, HER604, HER605, HER606, HER607
SF62, SF63,   SF64, SF65, SF66, SF67, SF68
8A1, 8A2, 8A4,   8A6, 8A8, 8A10
10A1, 10A2,   10A4, 10A6, 10A8, 10A10
FR251, FR252,   FR253, FR254, FR255, FR256, FR257
EM518/EM520/R2000
R2500
R3000
R5000

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WEET Continuous Stock The Most Popular Diode Rectifiers Transistors Semiconductors Manufacturer

The following products are used the most widely, and we continuously hold new stock.


ES1D SMA TAPE/REEL  5K/REEL

ES1J SMA TAPE/REEL  5K/REEL

M7 SMA TAPE/REEL  5K/REEL

M7F SMAF TAPE/REEL  10K/REEL

A7 SOD123FL TAPE/REEL  3K/REEL

1N4148W SOD123 TAPE/REEL  3K/REEL

MMBT5401 SOT-23  TAPE/REEL  3K/REEL


Bipolar (BJT) Transistor PNP 150 V 600 mA 300MHz 250 mW Surface Mount

MMBT5401 PNP High Voltage Transistor SMD SOT-23 Package


Mechanical Features:

Case: SOT23

Tape Reel:3kpcs/reel

Weight: 0.008 grams (Approximate)

Epitaxial Planar Die Construction

Complementary NPN Type - MMBT5551

Ideal for Low Power Amplification and Switching

Totally Lead-Free & Fully RoHS Compliant

Halogen and Antimony Free. "Green" Device

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WEET Dragon Boat Festival Holiday Time Notice - Best Factory For Capacitors and Diodes

Dragon Boat Festival is coming, we are here to thank you our valued customers for the support and help. 


Please find WEET holiday time as below: 3rd May to 5th May. Resume work on 6th May, 2022


You would check more products information on our websites and send us inquiry as usual. 


Passive electronic components: www.weetcap.com


Active electronic components: www.weetcl.com


The name of the Dragon Boat Festival is the most popular among all the traditional festivals in China, with more than 20 names, such as Dragon Boat Festival, Double Ninth Festival, Dragon Boat Festival, Duanwu Festival, Double Fifth Festival, dangwuxun Festival, Tianzhong Festival, Xia Festival, AI Festival, Shangri Festival, May Festival, Acorus calamus Festival, Tianyi Festival, herbal medicine Festival, Yulan Festival, Wuri Festival, Dila Festival, Zhengyang Festival, dragon day festival, zongzi Festival, Wuhuang Festival, poet's day, hiding afternoon Festival, jiezong Festival, Duanli Festival, the fifth day of May May afternoon, etc.


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WEET 2022 April Tomb Sweeping Festival and May Labour Day Holiday Notice

Holiday season is coming, please refer to below holiday notice in April and May 2022. Thank you.


April Fools' Day: 1st April. Resume work on 1st April. Actually no holiday at all, funny.

April Qingming Festival / Tomb Sweeping Festival: From 2nd April to 5th April. Resume work on 6th April

May Day / Labour Day: From 1st May to 4th May. Resume work on 5th May

For urgent matters, please call us at 0086 139 2570 0687

For general matters, please just send email to us as usual, we will try to reply you ASAP


Welcome you check below link and see how customers comment about WEET audio Capacitors.


https://www.musicaps.com/WEET-Full-Range-of-Audio-Capacitors-Customer-Testimonials.html

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WEET Chinese Spring Festival 2022 of Tiger Holiday Notice

Dear customers,


We are here to inform you the holiday notice.  All your enquires will be replied on 8th Feb.2022


For urgent matters, please call us at 0086 139 2570 0687


For general matters, please just send email to us as usual, we will try to reply you ASAP


WEET wish you good luck, good health, great sucess and good cheer in the near year of Tiger 2022


Chinese Traditional Spring Festival Period: 22nd Jan. 2022 to 7th Feb.2022, resume work on 8th Feb.2022

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WEET WEE Technology Happy New Year 2022 Chinese Zodiac Year of the Tiger

A new year means a new chapter, we hope 2022 is an incredible part of your story.


Wish you get all the success this year. Hope that joy and success follow you in every sector of life. Happy New Year 2022!

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WEET WEE Technology Diodes Factory in China Wish You a Merry Christmas and a Happy New Year

Dear Customers,


How time flies! We are going to say goodbye to year 2021 and welcome the New Year 2022.


In 2021, we are all still undergoing a long process of COVID-19 all over the world. The economy is going down globally. Some of our competitors even shut down factory and is wielding the jobs cutting acts in a big way.


However, WEET 2021 annual turnover is surprisingly stable and even better than the past years.WEET wholeheartedly thank for all the customers’ supports and trust.


In 2022, we are expecting a fresh new year, the COVID-19 is gone forever. The entire business field is thriving and prosperous.


WEET has planned to expand Capacitors factory and greatly promote capacitors under WEET brand.


Without your support, WEET is ZERO. WEET success is greatly depends on our valuable customers. Let us make the best of 2022 to build our business partnership.

Yours Sincerely,

From your faithful and supportive friend

WEE Technology Company Limited


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WEET The Future Development Trend of China's Semiconductor Diode Industry

The future development trend of China's semiconductor diode industry


1. Wide-bandgap semiconductor materials gradually become popular


With the continuous development of technology, profound changes have taken place in the semiconductor diode industry, and new materials will become the new development focus of the industry. New material semiconductors represented by materials such as silicon carbide (SiC) and gallium nitride (GaN) have attracted industry attention due to their excellent performance such as wide band gap, high saturation drift speed, and high critical breakdown electric field. They are expected to become a new type of semiconductors. Wide bandgap semiconductor materials exhibit good material properties in practical applications. Due to technical limitations and high manufacturing costs, they are currently only appearing in high-end application scenarios. With the maturity of future technology, the manufacturing cost of wide-bandgap semiconductor materials will be further reduced, and will gradually become the mainstream product material in the semiconductor diode industry in the future.


2. Extend to higher value-added links


Scale advantage is an important means for companies in the semiconductor diode industry to control costs and improve their competitiveness. Therefore, low-end small and medium-sized enterprises that do not have scale advantages will find it difficult to continuously invest in R&D and market development, and it is difficult to survive in the industry. In recent years, China's semiconductor diode industry has increased its integration efforts, small companies have gradually withdrawn, and market concentration has gradually increased.


However, the process flow with high technical barriers and high product added value in the chip epitaxial link is in a disadvantageous position relative to the international leading level. The current market concentration of China's semiconductor diode industry is gradually increasing. With sufficient funds, companies have gradually increased their R&D investment. Especially in the SiC field, most large diode companies have capital arrangements. In addition, China's semiconductor diode packaging technology is at an internationally leading level, and the high standards of the packaging industry will in turn promote the accelerated development of the semiconductor diode chip industry, which in turn will drive the development of the entire industry and extend to higher value-added links.

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WEET Development Status and Government Policies of China's Semiconductor Diode Industry

1. Development status of China's semiconductor diode industry


According to the public data of the China Electronic Information Industry Statistical Yearbook, with the continuous development of China's semiconductor diode industry as a whole, the sales volume has increased from 285.6 billion in 2014 to 1,695 billion in 2018. Although from 2014 to 2016, due to the slowdown in the growth of the semiconductor market in mainland China, the substantial decline in the computer system industry, and the slowdown in the growth momentum of smartphones, the overall sales volume has declined. The overall market size of the semiconductor diode industry in China Maintain the upward growth trend. Especially in the past three years, the market expansion of emerging application fields such as the Internet of Things, cloud computing, big data, intelligent manufacturing, intelligent transportation, and medical electronics has prompted the rapid development trend of explosive growth in the market scale of China's semiconductor diode industry since 2017.


China is the world's largest semiconductor diode market, and there is a huge market demand for semiconductor diodes. Due to the performance of domestic products, most industries will not include domestic semiconductor diodes in the selection of raw materials. The "ZTE Incident" in 2018 accelerated the localization of semiconductor devices in various industries such as China's communications, automobiles, and electronics. After decades of technological research and development, the level of China's semiconductor diode manufacturing technology has stabilized, and some products have been exported on the basis of import substitution. In the context of the macroeconomic downturn in recent years, the export value of China's semiconductor diodes (except photodiodes or light-emitting diodes) from January to November 2020 was US$2.275 billion.


With the expansion of the market share of downstream industries in the industrial chain such as electronic complete machines and consumer electronic products, there is still considerable room for development in the semiconductor diode market. Huge market demand has prompted many R&D forces and funds to invest in this field. The fixed investment in China's semiconductor discrete device manufacturing industry has increased from 10.74 billion yuan in 2014 to 56.43 billion yuan in 2018, and semiconductor diodes accounted for the highest proportion of shipments. The market segment of the company has been favored by a large number of investors, and the capital boom has further promoted the rapid development of the industry.


2. Analysis of relevant policies in China's semiconductor diode industry


In recent years, the state’s support for the semiconductor industry has continued to increase. The government work report of the First Session of the 13th National People’s Congress will list “promoting the development of integrated circuits, fifth-generation mobile communications, aircraft engines, new energy vehicles, new materials and other industries”. In the first place in the development of the real economy, it highlights the important position of the semiconductor industry in the national strategy. In the future, the Ministry of Industry and Information Technology and related departments will continue to promote the development of industrial semiconductor materials, chips, devices and IGBT modules, and adjust and improve the policy implementation rules according to the industry development situation to better support the development of the industry. Intensify industrial chain cooperation through industry associations, in-depth promotion of industry-university-research collaboration, and promote the technological iteration and application promotion of China's industrial semiconductor materials, chips, devices and IGBT module industries.

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WEET Definition, Classification and Industry Chain Analysis of Semiconductor Diodes

1. Definition and classification of semiconductor diodes


A semiconductor diode is a unidirectional conductive two-terminal device made of semiconductor materials. It is widely used in rectification scenarios because of its characteristic that only allows current to flow in a single direction. It is one of the most commonly used electronic components. The semiconductor diode is one of the earliest discrete semiconductor devices. It can be connected to a variety of components such as resistors, capacitors, and inductors in a reasonable combination to form circuits with different functions. These circuits can achieve various functions such as rectification of alternating current, wave building, amplitude limiting, clamping, and voltage stabilization of the modulated signal.


According to specific uses, diodes can be divided into detection diodes, rectifier diodes, Zener diodes, switching diodes, isolation diodes, Schottky diodes, light emitting diodes, silicon power switching diodes, rotating diodes, etc. Among them, rectifier diodes, detector diodes, switching diodes, and Zener diodes are widely used.


2. Industry chain analysis of China's semiconductor diode industry


Participants in the upstream market of China's semiconductor diode industry chain include industrial silicon, packaging materials and other raw material suppliers and production equipment suppliers. The midstream of the industry chain is a Chinese semiconductor diode manufacturer. The downstream terminal application areas of the industry chain cover consumer electronics such as mobile phones, computers, and home appliances. And automobiles and other fields.

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WEET Holiday Notice Mid Autumn Festival Sept. 20th-21st Chinese National Day Oct.1st-4th

Mid Autumn Festival:  close on Sept. 20th-21st, resume work on Sept. 22th.


Chinese National Day:  close on Oct.1st-4th, resume work on Oct.5th.


Never hesitate to contact us on email, skype, wechat, we proceed your requirements at earliest time.


Larget stock of diodes, capacitors available, first come, first served.


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WEET New Stock for Urgent Demands Diode Rectifier P6KE24CA DO-15 SS36 DO-214AC CA45 Capacitors

WEE Technology Company Limited
We are WEE, We Enhance Efficiency
Manufacturer of Diode Rectifier, Bridge Rectifier, Transistor


For urgent demands of diode rectifiers, tantalum capacitors and ceramic capacitors, please contact us without hesitation.

The market supply of raw and processed materials of Schottky Diodes is extremely tensive, we are unable to continuously and efficiently supply it either. We will update once the supply turns normal.


NO.

WEET   DESCRIPTION

MPQ

MOQ


WTB: CA45 SMD Tantalum Capacitors Standard


https://www.weetcapacitor.com/Datasheet/WEET-WTB-CA45-SMD-Chip-Tantalum-Capacitors-Standard.pdf

1

68uF 25V +/-10% E case TapeReel

400PCS/REEL

2,000

2

68uF 25V +/-10% D case TapeReel

500PCS/REEL

2,500

3

15uF 35V +/-10% D case TapeReel

500PCS/REEL

2,500

4

47uF 35V +/-10% E case TapeReel

400PCS/REEL

2,000

5

more goods of WTB serie




WCD: SMD MLCC Ceramic Capacitors


https://www.weetcapacitor.com/Datasheet/WEET-WCD-Chip-SMD-4VDC-to-50VDC-MLCC-Mono-Capacitors-Multilayer.pdf

1

100nF 50V 0805 X7R +/-10% TapeReel

4KPCS/REEL

40,000

2

1uF 50V 0805 X7R +/-10% TapeReel

2KPCS/REEL

20,000

3

more goods of WCD serie




Diode Rectifiers


http://www.weediode.com/DATASHEETS.html

1

S1M DO-214AC TapeReel

2KPCS/REEL

20,000

2

1N5408 DO-27 Ammo

1.25KPCS/AMMO

12,500

3

SS16 DO-214AC TapeReel

5KPCS/REEL

30,000

4

K14 SOD-123FL TapeReel

3KPCS/REEL

30,000

5

ES1D DO-214AC TapeReel

5KPCS/REEL

30,000

6

SS36 DO-214AC TapeReel

5KPCS/REEL

30,000

7

P6KE24CA  DO-15 Ammo

2KPCS/AMMO


8



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WEET 2021 Spring Festival Holiday Notice 1st-22nd Feb. Wish a Safe Healthy Prosperous New Year

WEET closes on 1st-22nd Feb., but sales are online 24hours on email, feel free to shoot us any inquiries.

Chinese New Year, also known as Lunar New Year or Spring Festival, is China's most important festival. It is time for families to be together.

Chinese New Year 2021 falls on Friday, February 12, 2021, beginning a year of the Ox.

The important dates during the period of Chinese New Year 2021:

February 4th, 2021    December 23rd    Little Year
February 11th, 2021    December 30th    Chinese New Year's Eve
February 12th, 2021    January 1st    Chinese New Year (Spring Festival)
February 26th, 2021    January 15th    Lantern Festival

Wish you in the New Year Good Health, Safety, Full Life, Career Advancement, Sunny Mood, Rich Fortune, Happy Family, Happy New Year!

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Written by WEE Technology Company Limited

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WEET Best Wishes to a Brighter and Happier New Year 2021

Let the old year-end and the New Year begin with the warmest of aspirations. Happy New Year!

Nights will be dark, but days will be light, wishing your life to be always bright. Happy New Year!

May this New Year bring you much joy and fun. May you find peace, love, and success. Happy New Year!


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WEET Tells How to Quickly Grasp the Necessary Electronic Components for IoT Design

WEE Technology Company Limited
We are WEE, We Enhance Efficiency
Manufacturer of Diode Rectifier, Bridge Rectifier, Transistor

WEET Tells How to Quickly Grasp the Necessary Electronic Components for IoT Design


At the time when the Internet of Things (IoT) is booming, a variety of novel electronic product designs are sprouting, and equipment developers are making every effort to speed up product development and time to market in order to seize market share as soon as possible. With the increasingly fierce competition in the market, understanding how to quickly grasp the necessary electronic components for IoT design, as well as the important evaluation indicators and techniques for selecting relevant components, is of vital importance to promoting product launches.

Package:
The packaging of electronic components refers to how the parts are mounted on the circuit board. Many parts are either soldered on a printed circuit board (PCB), through a through-hole method, or using surface mount technology.

Basic Electronic Components:
The simplest components are discrete passive components. These parts have only a single function, such as providing resistance, capacitance, inductance, or adding voltage or current control. Most discrete components have only two to three pins.

Capacitor:
Capacitors store charge. Capacitors are mostly used for frequency filtering. Its unit is Faraday, F. Can use through hole or SMT package. The electrolytic capacitor has polarity and must be installed correctly, otherwise the capacitor may be damaged. When purchasing a capacitor, you must declare the polarity, type of dielectric (such as ceramic, plastic, paper, etc.), rated voltage and capacitance.

Diode Rectifier:
The diode rectifier can allow or block the flow of current in the circuit according to the voltage across it. Current is only passed when the anode voltage is higher than the cathode, and usually needs to be at least 0.7 volts higher. The diode is like a one-way valve, preventing the voltage from going in the wrong direction.

It is used for current conversion from AC to DC to prevent out-of-range input voltage. Zener diode is a special type of diode used as a voltage regulator. Schottky diodes have lower forward voltage drop (in the range of 0.15 to 0.45V) and faster turn-on time.

Transistor:
The transistor is a multifunctional circuit element. This three-pin device can be used as a voltage or current dependent switch, or as an amplifier or stabilizer depending on the circuit. There are two main technologies, bipolar junction (BJT) and field effect (FET). The pin terminals of these two types of transistors are different. BJT transistors are divided into two types according to the polarity of the components, NPN and PNP. FET transistors also have many classifications based on n-channel and p-channel.

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WEET Forward: China Intends to Fully Support the Semiconductor Industry

WEE Technology Company Limited
We are WEE, We Enhance Efficiency
Manufacturer of Diode Rectifier, Bridge Rectifier, Transistor

WEET Forward: China Intends to Fully Support the Semiconductor Industry


China is vigorously supporting the development of its own semiconductor industry, is planning to formulate a comprehensive set of new policies to develop its own semiconductor industry, and to give this task a high priority "just as it did when it made an atomic bomb.

Beijing is preparing to provide extensive support for "third-generation semiconductors" within five years to 2025. A series of measures have been added to the draft of China's 14th Five-Year Plan to strengthen research, education and financing in this industry. Compared with traditional silicon materials, the third-generation semiconductors are based on broadband semiconductor materials such as gallium nitride, silicon carbide, and zinc selenide, which are more suitable for manufacturing high-frequency and high-power devices with high temperature resistance, high voltage resistance, and high current resistance.

China is about to formulate its next five-year plan, which includes efforts to expand domestic consumption and manufacture key technology products domestically. China has pledged to invest approximately US$1.4 trillion in technologies ranging from wireless networks to artificial intelligence by 2025. Semiconductors are actually the basis for all aspects of China's technological ambitions.

According to China Customs statistics, my country's chip imports in 2019 were US$304 billion, a decrease of US$8 billion from the same period last year and a year-on-year decrease of 2.6%. Relevant data released by the State Council show that China's chip self-sufficiency rate in 2019 is only about 30%. Recently, the State Council issued the "Several Policies to Promote the High-quality Development of the Integrated Circuit Industry and Software Industry in the New Era", stressing that the integrated circuit industry and software industry are the core of the information industry and are the key force leading a new round of technological revolution and industrial transformation.

For the core industry of chips, which is "stuck-necked," it must have the initiative and can no longer be controlled by others. Third-generation semiconductors are often used in the 5G field. China remains a leader in 5G technology and has advanced development in fields such as communications, artificial intelligence, and cloud services. These high-tech applications will promote the development of third-generation semiconductors.

WEE Technology Surface Mount (SMD) and Through Hole (DIP) Diodes and Bridge Rectifiers Package Overview:
MBS,ABS,DBS,MBM,DB,WOB,GBP,GBL,GBU,KBJ2,GBJ4,KBPC25,KBPC-W,GBPC,GBPC-W,KBP,D3K,RS2,KBL,KBU,GBJ6,KBPC1,KBPC6,KBPC8,BR,BR-W,BR-L,SKBPC,DO-35,A-405,DO-41,R-1,DO-15,DO-27,R-6,DFM,DFS,DO-213AA,DO-213AB,ITO-220AB,ITO-220AC,MBM,MBS,SMC,SMA,SMAF,SMB,SOD-123FL,SOT-89,TO-92,TO-220AB,TO-220AC,SOD-123,SOD-323,SOD-523,SOT-23,SOT-323,SOT-523,LL-34

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WEET Mature Manufacturer Of Diode Rectifiers, Bridge Rectifiers,Small Signal Transistor

WEE Technology Company Limited
We are WEE, We Enhance Efficiency
Manufacturer of Diode Rectifier, Bridge Rectifier, Transistor

"The manufacturing sector has been the first to resume operations, and experience has been gained in this process. The major challenge is clogged supply chains. To date, micro, small and medium-sized enterprises have yet to resume full-capacity production, and this has affected the entire industry chain. "
As a mature manufacturer of diode rectifiers, bridge rectifiers, small signal transistor,WEET is fully prepared to meet customers requirements.
Voltage:40V, 50V,60V, 100V,200V,400V,500V,600V,800V,1000V
Current:0.5A, 1.0A, 2A, 3A, 4A, 5A, 6A, 8A, 10A, 15A, 20A, 25A, 30A, 35A, 50A.
Packages:A-405, DO-15, DO-27, DO-35, DO-41, LL-34, LL-41, R-1, R-6, SMA, SMAF, SMAJ, SMB, SMC, SOD123, SOD-123FL, SOD-323, SOT-23, TO-220, TO-263, TO-277, MBS, MBF LBS, ABS, MBM, DB, DBS, WOM, MBM, KBP, GBP, KBL, KBU, GBU, KBJ4(3S), KBJ6(5S), BR6, KBPC6, KBPC8, KBPC/KBPC-W, BR/BR-W, BR-L, KBPC3(BR-3), GBPC, GBPCW, S35, S36, D4K
Category: General Purpose Rectifiers, High Efficiency Rectifiers, Ultra-Fast Recovery Rectifiers, Fast Recovery Rectifiers, Single Phase Bridge Rectifiers, Transient Voltage Suppressors, Schottey Barrier Rectifiers, High Speed Switching Diodes, Silicon Planar Zener Diodes, Small Signal Transistors
Applications: Automotive, energy saving lamp rectifier, computer peripherals, communications equipment, household appliances, aerospace products, medical devices, solar photovoltaic industry and other fields
ISO, REACH, ROHS certified: https://weetcl.com/Quality_Policy/ 

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