Parts · Transistors

2SK30AY

Si N-ch JFET TO-92 TH.5 circuits use this part.

Datasheet · archived copy from Toshiba; the part is discontinued and the maker no longer publishes it

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
2SK30ATM		6.5 mA	50 V	0.1 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
2SK118		6.5 mA	50 V	0.1 W	19
2SK208		6.5 mA	50 V	0.1 W	1
J202	4 V	4.5 mA	40 V	0.625 W	9
2SK246		14 mA	50 V	0.3 W	9
PN4393		5 mA	40 V	0.36 W	2
2SK117		14 mA	50 V	0.3 W	42
2SK184		14 mA	50 V	0.2 W	9
PF5102	1.6 V	20 mA	40 V	0.625 W	40

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2SK879		6.5 mA	50 V	0.1 W
2N5196	4 V	7 mA	50 V	0.5 W
2N5197	4 V	7 mA	50 V	0.5 W
2N5198	4 V	7 mA	50 V	0.5 W
2N5199	4 V	7 mA	50 V	0.5 W
2N4869	5 V	7.5 mA	40 V	0.3 W
2N5515	3.8 V	7.5 mA	40 V	0.375 W
2N5516	3.8 V	7.5 mA	40 V	0.375 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
Ibanez PT-90 1458 · 2SC536SP · 2SK30AY · 2SK44SP Ibanez PT-90	Ibanez PT-90	Phaser	Experimentalists Anonymous	—	3	—	102
Ibanez PT909 1458 · 2SC536SP · 2SK30AY · 2SK44SP Ibanez PT909	Ibanez PT909	Phaser	Experimentalists Anonymous	—	3	—	100
Nobels DT-SN 2SC2240BL · 2SC2362G · 2SK222E · 2SK30AY Nobels DT-SN Distortion Special	Nobels DT-SN Distortion Special	Distortion	Experimentalists Anonymous	—	—	—	128
Nobels Distortion Xtreme 062 · 14007 · 2240BL · 2SC2362G Nobels Distortion Xtreme	Nobels Distortion Xtreme	Distortion	Experimentalists Anonymous	—	—	—	142
WR3 Wah Rocket 2SC1815 · 2SK30A · 2SK30AY · 4558 Guyatone WR3 Wah Rocker	Guyatone WR3 Wah Rocker	Wah / Envelope	Griffin Effects	—	2	$15.00	63