Parts · Transistors

2SC945

Si NPN BJT TO-92 TH.13 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
2SC945	75	40 V	100 mA	0.25 W	125 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2N3416	75	50 V	500 mA	0.36 W		1
2SC828A	65	45 V	50 mA	0.25 W	110 MHz	1
2SC828	65	30 V	50 mA	0.25 W	110 MHz	27
2SC2458	70	50 V	150 mA	0.2 W	80 MHz	10
MPS6513	90	30 V	100 mA	0.31 W	125 MHz	6
2SC1815	70	50 V	150 mA	0.4 W	80 MHz	85
2SC2712	70	50 V	150 mA	0.15 W	80 MHz	1
2SC536	60	30 V	100 mA	0.2 W	115 MHz	4

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BSW88	75	30 V	100 mA	0.3 W
BSW89	75	30 V	100 mA	0.3 W
BC207	75	45 V	100 mA	0.3 W	150 MHz
BSW42A	75	50 V	200 mA	0.3 W	150 MHz
BSW42AK	75	50 V	200 mA	0.3 W	150 MHz
BSX51A	75	50 V	200 mA	0.3 W	150 MHz
2N6222	75	60 V	100 mA	0.36 W
BFT30CSM	75	60 V	1000 mA	0.36 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
BOSS DR-55 2SA733 · 2SC945 · 2SK30A · ? Boss DR-55	Boss DR-55	Ring Mod / Synth	Experimentalists Anonymous	—	4	—	205
BOSS GE-7 2SC732 · 2SC945 · 2SK30A · 4558 Boss GE-7	Boss GE-7	EQ / Filter	Experimentalists Anonymous	—	—	—	108
BOSS MT2 2SC3378 · 2SC945 · 2SK118 · 2SK184 Boss MT2	Boss MT2	Distortion	Experimentalists Anonymous	—	6	—	52
BOSS SG1 2SC732TM GR · 2SC945 · 2SK30ATM GR · UPC741C Boss SG1	Boss SG1	Ring Mod / Synth	Experimentalists Anonymous	—	2	—	86
Boss CS-3 2SC732-GR · 2SC945(P) · 2SK117-GR · 2SK30A-Y Boss CS-3	Boss CS-3	Compressor	Experimentalists Anonymous	—	4	—	46
Boss CS-3 (JPG) 2SC732 · 2SC945 · 2SK117 · 2SK30A Boss CS-3 (JPG)	Boss CS-3 (JPG)	Compressor	Experimentalists Anonymous	—	4	—	48
Korg MS20 2SA564(S) · 2SC1583G · 2SC1685S · 2SC644R Korg MS20	Korg MS20	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	70
Roland Juno 106 2764 · 2SC945 · 4050 · 4051 Roland Juno 106	Roland Juno 106	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	371
Roland TR-606 2SB586 · 2SB647C · 2SC2021/2SA937 · 2SC945/2SA733 Roland TR-606	Roland TR-606	Ring Mod / Synth	Experimentalists Anonymous	—	8	—	659
Roland TR-808 2SA1015 · 2SA733 · 2SB596 · 2SC828RNZ Roland TR-808	Roland TR-808	Ring Mod / Synth	Experimentalists Anonymous	—	25	—	1122
Simple BL3208 echo 2SC945 · BA4450 · LM324 · MN3008	—	Delay	Experimentalists Anonymous	—	2	—	85
Kay F1 Fuzz Tone Vero21×11 Verified 2SC644S · 2SC945 Kay F-1 Fuzz Tone	Kay F-1 Fuzz Tone	Fuzz	Tagboard Effects	—	—	—	18
Wyllie Moonrock Vero24×19 Verified 2N3904 · 2SC945 Wyllie Moonrock	Wyllie Moonrock	Fuzz	Tagboard Effects	—	2	—	26