Parts · Transistors

BF244A

Si N-ch JFET TO-92 TH.8 circuits use 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
BF244A	30 V	50 mA	30 V	0.35 W

Used on other boards here

Part	Vgs max	Id max	Vds	Pd	Boards
SST201		50 mA	40 V	0.36 W	1
J310		50 mA	25 V	0.4 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
2N4416	30 V	30 mA	30 V	0.3 W	1
2SK170		20 mA	40 V	0.2 W	10
J108		80 mA	25 V	0.4 W	1

Closest by the numbers

Part	Id max	Vds	Pd
2N5640	50 mA	30 V	0.35 W
J203	50 mA	40 V	0.36 W
J204	50 mA	40 V	0.36 W
2SK519	50 mA	30 V	0.35 W
2SK520	50 mA	30 V	0.2 W
2SK518	50 mA	30 V	0.4 W
2N5638	50 mA	30 V	0.35 W
2N5653	40 mA	30 V	0.625 W

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
BJFE Blueberry Bass Overdrive Vero19×15 Verified BF244A · CA3130 · CA3130EZ BearFoot FX BlueBerry Bass Overdrive	BearFoot FX BlueBerry Bass Overdrive	Overdrive	Dirtbox Layouts	—	3	—	30
Coloursound Chuckawah page 2 BF244A · MC3401	—	Other	Experimentalists Anonymous	—	—	—	17
Juicy Blue Dynamic Bass Overdrive BF244A · CA3130 Mad Professor Blueberry Bass Overdrive · 1590B	Mad Professor Blueberry Bass Overdrive	Overdrive	Fuzz Dog	1590B	3	£40.80	51
Blueberry Bass OD BF244A · CA3130 · CA3130EZ Mad Professor Blueberry Bass Overdrive	Mad Professor Blueberry Bass Overdrive	Overdrive	PCBWay: Glory to Ukraine	—	3	—	35
Hot Rodded Honey Bee (a la Honey Bee Deluxe) Vero BF244A · CA3130 · CA3130EZ BJFE / Bearfoot Fx Hot Rodded Honey Bee	BJFE / Bearfoot Fx Hot Rodded Honey Bee	Overdrive	Revolution Deux	—	5	—	56
Mad Professor Blueberry Bass Overdrive BF244A · CA3130 · CA3130EZ Mad Professor Blueberry Bass Overdrive	Mad Professor Blueberry Bass Overdrive	Bass	Revolution Deux	—	3	—	54
Colorsound Phazex Vero28×18 Verified 1458 · BF244A · LM1458 Colorsound Phazex · 125B	Colorsound Phazex	Phaser	Tagboard Effects	125B	3	—	25
Mad Professor Blueberry Vero21×19 Verified BF244A · CA3130 Mad Professor Blueberry Bass Overdrive · 1590B	Mad Professor Blueberry Bass Overdrive	Overdrive	Tagboard Effects	1590B	3	—	35