Transistor - BC109, TO-18 case, NPN
BC109 NPN silicon transistors. The BC109 is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones.
Type | hFE (IC=2mA, VCE=5V) | hfe (IC=2mA, VCE=5V, f=1KHz) |
BC109B | 200-450 | 240-500 |
BC109C | 420-800 | 450-900 |
Pinout (bottom view):

SKU:
P-QBC109X
Item ID:
045532
Element:
Matched Pair:
Package:
Polarity:
Series:
Type:
Type | Our Part Number |
---|---|
BC109B | P-QBC109B |
BC109C | P-QBC109C |
DC Current Gain | BC109B version | P-QBC109B | 200-450 |
BC109C version | P-QBC109C | 420-800 | |
Input Impedance | BC109B version | P-QBC109B | 3.2-8.5 KΩ |
BC109C version | P-QBC109C | 6-15 KΩ | |
Max. Collector Base Voltage | 30 V | ||
Max. Collector Current Continuous | 200 mA | ||
Max. Collector Emitter Voltage | 25 V | ||
Max. Emitter Base Voltage | 5 V | ||
Max. Operating and Storage Junction Temperature Range | - 65 to +200 ºC | ||
Max. Power Dissipation @ Ta=25ºC | 300 mW | ||
Max. Power Dissipation @ Tc=25ºC | 750 mW | ||
Noise Figure | 4.0 dB | ||
Output Admittance | BC109B version | P-QBC109B | 60 umhos max. |
BC109C version | P-QBC109C | 110 umhos max. |
Packaging Dimensions | 0.739 in. × 0.252 in. × 0.252 in. | |
Weight (Packaging) | 0.001 lbs. |
P-QBC109B - BC109B version | DC Current Gain | 200-450 |
Input Impedance | 3.2-8.5 KΩ | |
Max. Collector Base Voltage | 30 V | |
Max. Collector Current Continuous | 200 mA | |
Max. Collector Emitter Voltage | 25 V | |
Max. Emitter Base Voltage | 5 V | |
Max. Operating and Storage Junction Temperature Range | - 65 to +200 ºC | |
Max. Power Dissipation @ Ta=25ºC | 300 mW | |
Max. Power Dissipation @ Tc=25ºC | 750 mW | |
Noise Figure | 4.0 dB | |
Output Admittance | 60 umhos max. | |
P-QBC109C - BC109C version | DC Current Gain | 420-800 |
Input Impedance | 6-15 KΩ | |
Max. Collector Base Voltage | 30 V | |
Max. Collector Current Continuous | 200 mA | |
Max. Collector Emitter Voltage | 25 V | |
Max. Emitter Base Voltage | 5 V | |
Max. Operating and Storage Junction Temperature Range | - 65 to +200 ºC | |
Max. Power Dissipation @ Ta=25ºC | 300 mW | |
Max. Power Dissipation @ Tc=25ºC | 750 mW | |
Noise Figure | 4.0 dB | |
Output Admittance | 110 umhos max. |
![]() | All Models |
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Product Reviews
Fast delivery on this sought after transistor which has huge amounts of gain. Looking forward to modding out my projects. Thanks!