Parts · Transistors

2N5138

Si PNP BJT.2 circuits use this part.

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
2N5138	50	30 V	100 mA	0.2 W	40 MHz

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
MPSA65	50	30 V	300 mA	0.625 W	100 MHz	2
2N4402	50	40 V	600 mA	0.31 W	150 MHz	4
2N4125	50	30 V	200 mA	0.31 W	200 MHz	18
2N3905	50	40 V	200 mA	0.31 W	200 MHz	6
2SA733	40	40 V	300 mA	0.25 W	90 MHz	6
2N3702	60	25 V	200 mA	0.36 W	100 MHz	5
BC212L	50	50 V	200 mA	0.3 W	200 MHz	1
BC327	63	45 V	800 mA	0.5 W	60 MHz	3

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
BC203R	50	30 V	75 mA	0.25 W	40 MHz
PN4248	50	40 V	100 mA	0.2 W	40 MHz
BC291	50	40 V	100 mA	0.36 W
BC275	50	25 V	100 mA	0.3 W	65 MHz
BC221	50	30 V	500 mA	0.3 W	75 MHz
2SA482	50	32 V	600 mA	0.6 W	35 MHz
2SA628	55	25 V	100 mA	0.15 W	50 MHz
BSV97	40	30 V	800 mA	0.22 W	40 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Comfy Plum 2N5138 · CD4049UB · CD4049UBE · ECG123A 1590BBS	—	Octave / Pitch	Dead End FX	1590BBS	3	$15.00	43
	Sallen Key 2P Filters 2N5138 · 2N5172	—	Other	Experimentalists Anonymous	—	—	—	25