Akashic Guitar effects circuit lookup

Parts · Diodes

BA282

Si Band-Switching Diode.8 circuits use this part. Listed as: Schottky diode, DO-35; Band switching diode, DO-35; or, MA856 (if you can find them).

Datasheet · archived copy from WEJ; the part is discontinued and the maker no longer publishes it

Substitutes same kind

Diodes of the same kind; for clipping, the forward drop is what you hear. 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

PartVfIf maxVrtrrCjPackageBoards
BA2821 V @ 100 mA0.1 A35 V1.5 pFDO-358

A VHF band-switching diode; Vf is only a 1 V maximum at 100 mA.

Alternatives

PartVfIf maxVrtrrCjPackageBoardsDiffers
MA8561 V @ 100 mA0.1 A35 V2 pFDO-3418DO-34. A band-switching diode (MA2C856), discontinued; Vf is only a 1 V maximum at 100 mA.
1N4561 V @ 100 mA0.5 A30 VDO-358Low-leakage 30 V glass diode (25 nA at 25 V) that clips much like a 1N4148.
MA1500.95 V @ 100 mA0.1 A35 V10 ns0.9 pFDO-3513
1S24730.92 V @ 100 mA0.11 A40 V1.5 ns1.5 pFDO-3511
1N458A1 V @ 100 mA0.5 A150 VDO-352Low-leakage 150 V glass diode (25 nA at 125 V).
OA2000.53 V @ 0.1 mA0.05 A50 V3An early silicon-alloy diode with a 0.53 V drop at 0.1 mA, close to a 1N4148.
1N914BWS0.72 V @ 5 mA0.15 A75 V4 ns4 pFSOD-3232SOD-323. Surface-mount 1N914B in the small SOD-323 package.
1N9161 V @ 10 mA0.2 A100 V4 ns2 pFDO-3517Lower capacitance (2 pF) version of the 1N914.
1N41481 V @ 10 mA0.15 A100 V4 ns4 pFDO-352547Vf is a 1 V maximum at 10 mA; the sheet calls the 1N914 electrically equivalent.
1N44480.72 V @ 5 mA0.15 A100 V4 ns4 pFDO-355A 1N4148 with a tighter forward voltage spec (0.62-0.72 V at 5 mA).
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