Parts · Transistors

BC107A

Si NPN BJT TO-18 / TO-92 TH.3 circuits use this part. Listed as: BJT transistor, NPN TO-92.

Datasheet · archived copy from Siemens; the part is discontinued and the maker no longer publishes it

Substitutes Si NPN transistor

Matched on material, polarity and the limits below from the transistor parameter database. Pinouts and packages are not in that data: check the datasheet before you drop one in, and expect gain to change the sound.

This part

Part	hFE min	Vce	Ic	Pc	fT
BC107A	110	45 V	100 mA	0.3 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC237	110	45 V	100 mA	0.3 W	150 MHz	1
2SC2785	110	50 V	100 mA	0.25 W	150 MHz	2
BC847	110	45 V	100 mA	0.2 W	150 MHz	1
BC182	120	50 V	200 mA	0.3 W	150 MHz	7
IT122	100	45 V	50 mA	0.3 W	180 MHz	1
BC546A	110	65 V	100 mA	0.5 W	150 MHz	5
BC547A	110	45 V	100 mA	0.5 W	200 MHz	4
TIS92	100	40 V	400 mA	0.625 W		4

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC237A	110	45 V	100 mA	0.3 W	150 MHz
BC451	110	45 V	100 mA	0.3 W	150 MHz
BC451A	110	45 V	100 mA	0.3 W	150 MHz
BFY42	110	45 V	100 mA	0.3 W	150 MHz
BC147	110	45 V	200 mA	0.25 W	150 MHz
BC147A	110	45 V	200 mA	0.25 W	150 MHz
BC407	110	45 V	100 mA	0.25 W	150 MHz
BC407A	110	45 V	100 mA	0.25 W	150 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
OKKO Holy Grit Vero17×20 Verified 2N3053 · BC107A · BC182B OKKO Holy Grit	OKKO Holy Grit	Boost	Dirtbox Layouts	—	4	—	32
Sand of God 2N3053 · BC107A · BC182B OKKO Holy Grit · 1590B	OKKO Holy Grit	Fuzz	Fuzz Dog	1590B	3	£38.40	38
Sandblaster Fuzz 2N3053 · BC107A · BC182B OKKO Holy Grit · 125B	OKKO Holy Grit	Distortion	PedalPCB	125B	6	$12.00	42