Parts · Transistors

BC557C

Si PNP BJT TO-92 TH.13 circuits use this part. Listed as: Transistor BC557C.

Substitutes Si PNP 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
BC557C	450	45 V	100 mA	0.5 W	75 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC560C	420	45 V	100 mA	0.5 W	150 MHz	11
BC307C	500	45 V	100 mA	0.3 W	130 MHz	2
2SA798	250	50 V	100 mA	0.4 W	50 MHz	1
2N3965	250	60 V	200 mA	0.36 W	50 MHz	3
BC560B	240	45 V	100 mA	0.5 W	150 MHz	4
2N5087	250	50 V	50 mA	0.31 W	40 MHz	171
BC307B	240	45 V	100 mA	0.3 W	130 MHz	6
2SA970	200	120 V	100 mA	0.3 W	100 MHz	5

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC251C	450	45 V	100 mA	0.3 W	80 MHz
BC275C	450	45 V	100 mA	0.3 W	65 MHz
BC261C	450	45 V	100 mA	0.3 W	100 MHz
2SA1944	400	50 V	1000 mA	0.5 W	90 MHz
2SA1436	500	50 V	200 mA	0.6 W	100 MHz
BCX79X	380	45 V	200 mA	0.45 W	100 MHz
2SA1437	400	100 V	50 mA	0.5 W	85 MHz
2SA851	500	50 V	100 mA	0.5 W	150 MHz

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Brown Cat Preamp v.3 BC547C · BC550C · BC557C · IRF740 Friedman BE50/BE100 preamp · 1590DD	Friedman BE50/BE100 preamp	Preamp / Amp-in-a-box	HotKits	1590DD	14	$28.00	75
C9H13N Tube Overdrive BC547C · BC557C · IRF740 · LND150N3-G 125B	—	Overdrive	HotKits	125B	5	— out	49
Dopamine Preamp BC547C · BC557C · IRF740 · J177 1590BB2	—	Preamp / Amp-in-a-box	HotKits	1590BB2	7	$14.00	52
Enigma Preamp BC547C · BC557C · IRF740 · LND150N3-G Dumble Overdrive Special preamp · 1590XX	Dumble Overdrive Special preamp	Preamp / Amp-in-a-box	HotKits	1590XX	10	$28.00	65
Magnum Tube Overdrive BC547C · BC557C · IRF740 · NE555 Tubesteader Magnezium based · 1590BB2	Tubesteader Magnezium based	Overdrive	HotKits	1590BB2	5	$14.00	42
Mandragora Tube Overdrive BC547C · BC557C · IRF740 · NE555 Bogner Snorkler preamp · 1590BB2	Bogner Snorkler preamp	Overdrive	HotKits	1590BB2	5	$14.00	46
Nightshade Tube Overdrive BC547C · BC557C · IRF740 · NE555 1590BB2	—	Overdrive	HotKits	1590BB2	5	—	43
Reef Razor Preamp BC547C · BC557C · IRF740 · J112 Bogner Snorkler preamp · 1590XX	Bogner Snorkler preamp	Preamp / Amp-in-a-box	HotKits	1590XX	9	$28.00	61
Shark Preamp v.2 BC547C · BC557C · IRF740 · J177 ENGL E530 · 1590XX	ENGL E530	Preamp / Amp-in-a-box	HotKits	1590XX	9	— out	59
Skyline Tube Overdrive BC547C · BC557C · IRF740 · NE555 Bogner Ecstasy preamp · 1590BB2	Bogner Ecstasy preamp	Overdrive	HotKits	1590BB2	5	$14.00	45
SupraLead Preamp BC547C · BC557C · IRF740 · J177 Marshall Super Lead 1959 · 1590DD	Marshall Super Lead 1959	Preamp / Amp-in-a-box	HotKits	1590DD	12	$30.00	58
Twilight Warrior Preamp v.3 BC547C · BC557C · IRF740 · LND150N3-G Peavey 5150 preamp · 1590XX	Peavey 5150 preamp	Preamp / Amp-in-a-box	HotKits	1590XX	8	$26.00	61
Wildhoney Preamp v.3 BC547C · BC557C · IRF740 · J112 Soldano SLO preamp · 1590XX	Soldano SLO preamp	Preamp / Amp-in-a-box	HotKits	1590XX	9	— out	65