Parts · Transistors

KT3102EM

Si NPN BJT.2 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
KT3102EM	400		100 mA	0.25 W	300 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
BC413C	380	30 V	100 mA	0.3 W	250 MHz	1
BC109C	420	20 V	100 mA	0.3 W	150 MHz	79
BC239C	420	20 V	100 mA	0.3 W	150 MHz	16
BC108C	420	20 V	100 mA	0.3 W	150 MHz	13
BC549C	420	30 V	100 mA	0.5 W	200 MHz	171
BC547C	420	45 V	100 mA	0.5 W	200 MHz	18
BC548C	420	30 V	100 mA	0.5 W	200 MHz	6
BC318C	400	30 V	150 mA	0.31 W	100 MHz	3

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2N5235	400	60 V	100 mA	0.33 W
2N5249	400	50 V	100 mA	0.36 W
BCW33L	420	32 V	100 mA	0.225 W
BCW33LT1G	420	32 V	100 mA	0.225 W	300 MHz
BCW33LT3G	420	32 V	100 mA	0.225 W	300 MHz
BCW33LT1	420	20 V	100 mA	0.3 W	300 MHz
BCW33LT3	420	20 V	100 mA	0.3 W	300 MHz
BCF33	420	32 V	100 mA	0.35 W	300 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Lell DD Drive Distortion Vero21×25 Unverified 1485 · KP103 · KT3102EM Lell DD Drive Distortion	Lell DD Drive Distortion	Distortion	Dirtbox Layouts	—	5	—	43
	Lell EP Parametric Equalizer Vero26×22 Verified 1458 · KT3102EM Lell EP Parametric Equalizer	Lell EP Parametric Equalizer	EQ / Filter	Dirtbox Layouts	—	1	—	32