Diodes to replace SG9150 in Vox 1901 Distortion

Started by roseblood11, June 16, 2019, 06:13:05 PM

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roseblood11

Which easily available diode is closest to the SG9150 silicon fast rectifier diodes that are used for clipping in the Vox 1901 / Guyatone Zoom Distortion?
(Simple hardclipping circuit like DOD 250 / MXR Distortion+).

SG9150 Diodes
General Purpose Fast Rectifier
Military/High-Rel N
I(O) Max.(A) Output Current 10m
V(RRM)(V) Rep.Pk.Rev. Voltage 30
t(rr) Max.(s) Rev.Rec. Time 10n
@I(F) (A) (Test Condition) 10m
@I(R) (A) (Test Condition) 10m
V(FM) Max.(V) Forward Voltage 900m
@I(FM) (A) (Test Condition) 10m
@V(RM) (V) (Test Condition)
I(RM) Max.(A) Reverse Current 1.0u
@V(R) (V)(Test Condition) 25
I(RM) Max.(A) Pk. Rev. Current
@V(R) (V) (Test Condition)
@Temp. (øC) (Test Condition)
Semiconductor Material Silicon
Maximum Operating Temp (øC) 175
Package Style DO-35

Mark Hammer

Perfect illustration of how what matters in high-speed switching circuits is moot for distortion.  10 nanoseconds?  Is the difference between that and, say, 200nanoseconds even audible?

Get some silicon diodes like 1N914, 1N4148, or 1N4001 and be done with it.  It's only rock and roll.

PRR

Looks like a 1N914 to me. Today 1N4148 is the preferred (tighter spec) part.

I bet the Silicon General salesman left a box of samples behind at Vox and Vox used them up.
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