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What are Small Signal Transistors?
As
a design note, small signal transistors are used primarily when
amplifying small signals, such as a few volts and only when using
milliamperes of current.
small signal transistors come in NPN and PNP forms, are used to amplify low-level signals, can also be used as a switch.
Typical hFE values range from 10 to 500, with maximum Ic ratings from about 80 to 600mA.
Maximum operating frequencies range from about 1 to 300 MHz.
Popular small signal transistors: https://weetcl.com/Small_Signal_Transistors/
SOT-23(TO-236)
MMBT9018 (MMBT9018G, MMBT9018H) NPN Silicon Epitaxial Planar
Transistors 30V Small Signal Bipolar (BJT) Transistors
Spec.: https://weetcl.com/pdf/WEET_Transistors_SOT-23_MMBT9018.pdf
Absolute Maximum Ratings (Ta = 25 OC) | |||
Parameter | Symbol | Unit | MMBT9018 |
Collector Base Voltage | -VCBO | V | 30 |
Collector Emitter Voltage | -VCEO | V | 15 |
Emitter Base Voltage | -VEBO | V | 5 |
Collector Current | -IC | mA | 50 |
Power Dissipation | Ptot | mW | 200 |
Junction Temperature | Tj | OC | 150 |
Storage Temperature Range | TStg | OC | -55+150 |
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Written by WEE Technology Company Limited
