Parts · Diodes

1N5239A

Si Zener 9.1 V 500 mW DO-35 TH.1 circuit uses this part.

Substitutes same voltage

Zeners of the same voltage. The figures are read off each part's datasheet (this one's from page 2), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.

This part

Part	Vz	Power	Package	Boards
1N5239B	9.1 V	0.5 W	DO-35	10

500 mW zener in DO-35; B suffix is ±5 %, C is ±2 %.

Alternatives

Part	Vz	Power	Package	Boards	Differs
1N4739	9.1 V	1.3 W	DO-41	40	DO-41 body. 1.3 W zener in DO-41, ±5 % tolerance.
RD9.1E	9.1 V	0.5 W	DO-35	1	500 mW zener; the B1-B4 suffix only picks a narrower slice of the voltage spread.

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Morley Steve Vai Wah 2N3904 · 2N4401 · 2N5484 · CD4069UB Morley Steve Vai Wah	Morley Steve Vai Wah	Wah / Envelope	Experimentalists Anonymous	—	—	—	72