Parts · Transistors

2SK209G

Si N-ch JFET SOT-23 SMD.2 circuits use this part. Listed as: JFET transistor, N-channel; Transistor 2SK209G.

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
2SK209		14 mA	50 V	0.15 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
2SK117		14 mA	50 V	0.3 W	42
2SK184		14 mA	50 V	0.2 W	9
2SK246		14 mA	50 V	0.3 W	9
NTE458		20 mA	50 V	0.25 W	2
PF5102	1.6 V	20 mA	40 V	0.625 W	40
2SK170		20 mA	40 V	0.2 W	10
2SK118		6.5 mA	50 V	0.1 W	19
2SK208		6.5 mA	50 V	0.1 W	1

Closest by the numbers

Part	Vgs max	Id max	Vds	Pd
2SK2145		14 mA	50 V	0.3 W
2SK880BL		14 mA	50 V	0.1 W
2SK330		14 mA	50 V	0.2 W
2N3824	50 V	12 mA	50 V	0.3 W
2SK362		14 mA	50 V	0.3 W
2SK365		14 mA	50 V	0.2 W
2N3821	2 V	10 mA	50 V	0.3 W
2N3822	4 V	10 mA	50 V	0.3 W

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Blowball Overdrive 2SK209G · 33178 Marshall JCM800 · 1590B	Marshall JCM800	Overdrive	HotKits	1590B	4	$8.00	33
	Eight Ball Overdrive 2SK209G · MC33178 Marshall JCM800 · 125B	Marshall JCM800	Fuzz	PedalPCB	125B	4	$12.00	54