Parts · Diodes

1N5242B

Si Zener 12 V 500 mW DO-35 TH.3 circuits use this part. Listed as: Zener diode 1/2W, 12V; Zener diode, 12V.

Datasheet · from vishay.com

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
1N5242B	12 V	0.5 W	DO-35	5

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

Alternatives

Part	Vz	Power	Package	Boards	Differs
1N4742	12 V	1.3 W	DO-41	76	DO-41 body. 1.3 W zener in DO-41, ±5 % tolerance.
RD12EB	12 V	0.5 W	DO-35	2	500 mW zener; the B1-B4 suffix only picks a narrower slice of the voltage spread.
1N963	12 V	0.5 W	DO-35	1	500 mW glass zener; B suffix is ±5 %.

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