Parts · Diodes

RD6.8EB3

Si Zener 6.8 V.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 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.

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Roland TB-303 2SB596(O) · 2SB647(C) · 2SC1583 · 2SC2291 Roland TB-303	Roland TB-303	Ring Mod / Synth	Experimentalists Anonymous	—	7	—	266