Parts · Transistors

2SC2785K

Si NPN BJT TO-92 TH.6 circuits use this part.

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
2SC2785	110	50 V	100 mA	0.25 W	150 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC107	110	45 V	100 mA	0.3 W	150 MHz	13
BC107A	110	45 V	100 mA	0.3 W	150 MHz	3
BC237	110	45 V	100 mA	0.3 W	150 MHz	1
BC847	110	45 V	100 mA	0.2 W	150 MHz	1
BC182	120	50 V	200 mA	0.3 W	150 MHz	7
BC546A	110	65 V	100 mA	0.5 W	150 MHz	5
IT122	100	45 V	50 mA	0.3 W	180 MHz	1
BC547A	110	45 V	100 mA	0.5 W	200 MHz	4

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
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
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

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Korg Guitar Booster 2SC2785K · 2SK30A · TL072 Korg Guitar Booster	Korg Guitar Booster	Boost	Experimentalists Anonymous	—	4	—	48
Korg Noise Gate 2SC2785K · 2SK381B · 4558 · LM13600 Korg Noise Gate NGT-1	Korg Noise Gate NGT-1	Noise Gate	Experimentalists Anonymous	—	2	—	65
Korg Noise Gate NGT-1 2SC2785K · 2SK381B · 4558 · LM13600 Korg Noise Gate NGT-1	Korg Noise Gate NGT-1	Noise Gate	Experimentalists Anonymous	—	2	—	65
Korg Tone Booster 2SC2785K · 2SK30A(O) · TL072 Korg TNB-1 Tone Booster	Korg TNB-1 Tone Booster	Boost	Experimentalists Anonymous	—	4	—	48
Korg Tone Booster 2SC2785K · 2SK30A(O) · TL072 Korg TNB-1 Tone Booster	Korg TNB-1 Tone Booster	Boost	Experimentalists Anonymous	—	4	—	48
Korg CMP-1 / Yamaha CO-01 Compressor Vero Verified 2SC2785K · LM13600 · TL071 Korg CMP-1 / Yamaha CO-01 Compressor	Korg CMP-1 / Yamaha CO-01 Compressor	Compressor	Tagboard Effects	—	2	—	25