Parts · Transistors

AC151

Ge PNP BJT TH.2 circuits use this part.

Substitutes Ge 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
AC151	30	24 V	200 mA	0.9 W	1 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
GT402D	30	25 V	500 mA	0.6 W	1 MHz	2
NTE158	90	32 V	1000 mA	1.6 W	1.5 MHz	1

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
AC152	30	24 V	500 mA	0.9 W	1 MHz
AC121	30	20 V	300 mA	0.9 W	1 MHz
GT405A	30	25 V	500 mA	0.6 W	1 MHz
GTC609A	30	50 V	700 mA	0.5 W
SFT130	30	30 V	500 mA	0.55 W	0.5 MHz
2N1611	30	40 V	1500 mA	4.5 W
GT403E	30	45 V	1200 mA	4 W	1 MHz
AC139	40	20 V	1200 mA	0.72 W	1 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Schaller Fuzz Germanium Vero10×8 Verified AC151 Schaller Fuzz Germanium	Schaller Fuzz Germanium	Fuzz	Dirtbox Layouts	—	2	—	12
	Tecamp Dream Buzz Deluxe Vero10×11 Verified AC151 Tecamp Dream Buzz Deluxe	Tecamp Dream Buzz Deluxe	Fuzz	Dirtbox Layouts	—	5	—	16