Parts · Diodes

HZ5B1

Si Zener 4.7 V 500 mW DO-35 TH.1 circuit uses this part.

Datasheet · from renesas.com

Substitutes same voltage

Zeners of the same voltage. The figures are read off each part's datasheet (this one's from page 4), 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
HZ5B1	4.7 V	0.5 W	DO-35	1

Grade B1 is 4.6 to 4.8 V at 5 mA.

Alternatives

Part	Vz	Power	Package	Boards	Differs
1N5230	4.7 V	0.5 W	DO-35	8	500 mW zener in DO-35; B suffix is ±5 %, C is ±2 %.
RD4.7EB	4.7 V	0.5 W	DO-35	6	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
	Ibanez EM5 2SA1015Y · 2SC1815BL · 2SC1815GR · 2SK118O Ibanez EM5 Echomachine	Ibanez EM5 Echomachine	Delay	Experimentalists Anonymous	—	—	—	111