Parts · Transistors

J310

Si N-ch JFET TO-92 TH.1 circuit uses this part.

Substitutes N-channel JFET

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	Vgs max	Id max	Vds	Pd
J310		50 mA	25 V	0.4 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
2N3956	4 V	50 mA	50 V	0.25 W	1
2N3954	4 V	50 mA	50 V	0.25 W	1
J113		50 mA	35 V	0.4 W	88
J112		50 mA	35 V	0.4 W	24
J111		50 mA	35 V	0.4 W	17
BF244A	30 V	50 mA	30 V	0.35 W	8
2N4859A	10 V	50 mA	30 V	0.36 W	2
SST201		50 mA	40 V	0.36 W	1

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2SK520		50 mA	30 V	0.2 W
2N6453	5 V	50 mA	20 V	0.36 W
2N6454	5 V	50 mA	20 V	0.36 W
PN4117	1.8 V	50 mA	40 V	0.3 W
PN4118	3 V	50 mA	40 V	0.3 W
PN4119	6 V	50 mA	40 V	0.3 W
2N3921	2.7 V	50 mA	50 V	0.3 W
2N3922	2.7 V	50 mA	50 V	0.3 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	FYA Jazz Driver Vero14×10 Verified J310 FYA Jazz Driver	FYA Jazz Driver	Boost	Tagboard Effects	—	2	—	20