Parts · Transistors

BC109C

15 circuits use this part. Listed as: BJT transistor, NPN TO-18; BJT transistor, NPN TO-92; Semiconductors.

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
BC109C	420	20 V	100 mA	0.3 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC108C	420	20 V	100 mA	0.3 W	150 MHz	3
BC239C	420	20 V	100 mA	0.3 W	150 MHz	1
BC184C	450	30 V	200 mA	0.3 W	150 MHz	4
BC183C	450	30 V	200 mA	0.3 W	150 MHz	1
BC549C	420	30 V	100 mA	0.5 W	200 MHz	65
BC548C	420	30 V	100 mA	0.5 W	200 MHz	2
BC550C	420	45 V	100 mA	0.5 W	150 MHz	15
2N5089	400	25 V	50 mA	0.31 W	50 MHz	136

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
Black Biter BC109C	Emanating Fist Black Acid	Fuzz	Effects Layouts	125B	3	$4.25	16
109 Fuzz BC109C	BJFE 109 Fuzz	Fuzz	Fuzz Dog	1590B	1	£26.40	18
Big Hunger Fuzz BC109C	Massif Famine	Fuzz	Fuzz Dog	1590B	3	£26.40	19
Fusion Fuzz AC127 · BC109C	Hybrid Fuzz Driver	Fuzz	Fuzz Dog	1590B	5	£38.40	32
Fuzz Guy BC109C	Chase Tone Fuzz Fella	Fuzz	Fuzz Dog	1590B	5	£30.00	19
Moon Unit - Dark Side of the Fuzz BC109C	Lunar Module	Fuzz	Fuzz Dog	1590B	5	£36.00	36
Ursa Fuzz 2N3906 · BC109C	Fuzzly Bear	Fuzz	Fuzz Dog	1590B	3	£26.40	19
What Filter? Fuzz BC109C	Fuzz Face / Hiwatt Filter Fuzz	Fuzz	Fuzz Dog	1590B	1	£30.00	17
Fuzzhead FX Pink Goat BC109B · BC109C	—	Fuzz	Moonn Electronics	—	3	€5.50	45
Apollo Module Fuzz BC109C	Skreddy Lunar Module	Fuzz	PCB Guitar Mania	125B	3	€9.90 out	36
Grizzly Fuzz 2N3906 · BC109C	KMA Fuzzly Bear	Fuzz	PCB Guitar Mania	1590B	3	€9.90 out	24
Hwut Fuzz BC109C	Hiwatt Custom Shop Filter Fuzz	Fuzz	PedalPCB	125B	4	$10.00	23
Marigold Fuzz BC107 · BC109C · OC140	Sola Sound Yellow Hybrid Tone Bender	Fuzz	PedalPCB	125B	—	$10.00	37
Teddy Rupture Fuzz 2N3906 · BC109C	KMA Fuzzly Bear	Fuzz	PedalPCB	125B	3	$8.00	22
Dall BC109C · J113	BJFE Arctic White Fuzz	Fuzz	Sheepylove	—	5	€10.00 out	31