Parts · Transistors

BC108C

Si NPN BJT TO-18 / TO-92 TH.12 circuits use this part.

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
BC108C	420	20 V	100 mA	0.3 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC109C	420	20 V	100 mA	0.3 W	150 MHz	79
BC239C	420	20 V	100 mA	0.3 W	150 MHz	16
BC184C	450	30 V	200 mA	0.3 W	150 MHz	15
BC183C	450	30 V	200 mA	0.3 W	150 MHz	6
BC130C	470	20 V	100 mA	0.175 W	150 MHz	2
ZTX383C	450	30 V	100 mA	0.45 W	150 MHz	1
BC318C	400	30 V	150 mA	0.31 W	100 MHz	3
BC549C	420	30 V	100 mA	0.5 W	200 MHz	171

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC208C	420	20 V	100 mA	0.3 W	150 MHz
BC238C	420	20 V	100 mA	0.3 W	150 MHz
BC148C	420	20 V	200 mA	0.25 W	150 MHz
BC149C	420	20 V	200 mA	0.25 W	150 MHz
BC408C	420	20 V	100 mA	0.25 W	150 MHz
BC409C	420	20 V	100 mA	0.25 W	150 MHz
BCF29C	420	20 V	200 mA	0.25 W	165 MHz
BCF92C	420	20 V	200 mA	0.25 W	165 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Reeves Electro Supa J Vero16×13 Verified 2N2222A · BC108 · BC108C Reeves Electro Supa J	Reeves Electro Supa J	Fuzz	Dirtbox Layouts	—	2	—	26
Satronik Fuzz Sustainer Vero21×18 Verified 741 · BC108C · BC149 · LM741 Satronik Fuzz Sustainer	Satronik Fuzz Sustainer	Distortion	Dirtbox Layouts	—	3	—	32
Fulltone 70 Perfboard Verified BC108C Fulltone 70	Fulltone 70	Fuzz	Effects Layouts (blog)	—	3	—	19
Simple NPN amplifier 2 BC108C	—	Other	Experimentalists Anonymous	—	—	—	6
Supa-J Fuzz 2N2222A · BC108 · BC108C Reeves Electro Supa J · 1590B	Reeves Electro Supa J	Fuzz	Fuzz Dog	1590B	2	£38.40	27
NostalgiTone Dsotm Triple Combo: Eclipse Your Tone BC108C · BS170 · MPSA18 · TL072 1590DD	—	Other	GuitarPCB	1590DD	10	—	138
NostalgiTone Luna Fuzz Single: Legendary Fuzz Tones with Modern Precision BC108C 125B	—	Fuzz	GuitarPCB	125B	4	—	36
Dirty Bird Fuzz BC108C Cees van Eijk BC108 Dirtbag · 1590BB	Cees van Eijk BC108 Dirtbag	Fuzz	RWL Pedals	1590BB	8	—	48
Analogman Sunface BC108 Vero10×8 Verified BC108C Analogman Sunface BC108	Analogman Sunface BC108	Fuzz	Tagboard Effects	—	3	—	12
Fulltone 70 Vero14×9 Verified BC108C Fulltone 70	Fulltone 70	Fuzz	Tagboard Effects	—	3	—	17
Knight KG389 Fuzz Box Vero Verified BC108C Knight KG389 Fuzz Box	Knight KG389 Fuzz Box	Fuzz	Tagboard Effects	—	2	—	11
MXR M-173 Classic 108 Fuzz Vero13×10 Verified BC108C MXR M-173 Classic 108 Fuzz	MXR M-173 Classic 108 Fuzz	Fuzz	Tagboard Effects	—	2	—	18