Parts · Diodes

1N4733A

Si Zener 5.1 V 1 W DO-41 TH.6 circuits use this part. Listed as: Zener diode, 5.1V, DO-41; Diode; Zener Diode 1N4733A.

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
1N4733	5.1 V	1.3 W	DO-41	10

1.3 W zener in DO-41, ±5 % tolerance.

Alternatives

Part	Vz	Power	Package	Boards	Differs
RD5.1EB2	5.1 V	0.5 W	DO-35	17	DO-35 body; 0.5 W. 500 mW zener; the B1-B4 suffix only picks a narrower slice of the voltage spread.
1N5231B	5.1 V	0.5 W	DO-35	7	DO-35 body; 0.5 W. 500 mW glass zener, ±5 % in the B grade.

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