Only the 381LR and 381LX series of CDE caps is worth using for amp service.
OTOH the 270uF screw mounts from Ameritron are a direct swap and more than
sufficient capacity.
Carl
KM1H
----- Original Message -----
From: "john starr001" <jstarr001@hotmail.com>
To: "Amps@contesting.com" <amps@contesting.com>
Sent: Thursday, January 16, 2014 10:47 PM
Subject: [Amps] Electrolytic Substitutions
I am repairing an Alpha 87A and need 7 HV filter caps (350uF @ 450v) screw
terminal. The Alpha people spec for a Cornell Dubilier part (CGS series)
that costs $40-50 each at various sources. On the other hand I can buy a
different series (381LX) from Cornell Dubilier that has 330uF @ 450v with
very similar specs including tolerance, temperature, ripple, DC leakage and
ESR . These would cost me $2 each. The expensive ones are 5" long screw
and the cheapo's are 1 and 3/4" snap-in. I think I can easily fabricate
small screw down double-sided copper thru-hole PCB adapter boards for the
snap in's ... Is there another factor between these two electrolytic
series that is not obvious in the Cornell Dubilier spec sheets that should
push me to the $300 set versus the $14 set???
john
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