Parts · Diodes

RD6.8EB2

Si Zener 6.8 V.3 circuits use this part.

Substitutes same voltage

Zeners of the same voltage. The figures are read off each part's datasheet (this one's from page 5), 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
RD6.8EB2	6.8 V	0.5 W	DO-35	4

500 mW zener; the B1-B4 suffix only picks a narrower slice of the voltage spread.

Alternatives

Part	Vz	Power	Package	Boards	Differs
1N5235	6.8 V	0.5 W	DO-35	3	500 mW zener in DO-35; B suffix is ±5 %, C is ±2 %.
1N4736	6.8 V	1.3 W	DO-41	1	DO-41 body. 1.3 W zener in DO-41, ±5 % tolerance.

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
BOSS DR-100 2SA1115F · 2SB642R · 2SC2603F · 2SC945K Boss DR-100	Boss DR-100	Ring Mod / Synth	Experimentalists Anonymous	—	4	—	289
BOSS DR-110 2SA1115F · 2SB642R · 2SC2603F · 2SC945K Boss DR-110	Boss DR-110	Ring Mod / Synth	Experimentalists Anonymous	—	4	—	288
Roland TR-606 2SB586 · 2SB647C · 2SC2021/2SA937 · 2SC945/2SA733 Roland TR-606	Roland TR-606	Ring Mod / Synth	Experimentalists Anonymous	—	8	—	659