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ID = 37263
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Solid-State-Diode   Universal 
Identical to OA50
Similar Tubes
Normally replaceable-slightly different:
  1N34A ; GW40
First Source (s)
1951 : - - Manufacturers Literature Philips 4.4.51 Provisional data!

Base Wires

Germanium point contact universal purpose diode.
Also made by the other Philips related manufacturers.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
6 x 12 x mm / 0.24 x 0.47 x inch
Weight 1 g / 0.04 oz
Information source

Egon Strampe

oa61_ff_2.gif OA50: KTT 1969/70
Günther Stabe † 19.8.20

OA50: Radio Magazin Nr. 1 Januar 1954
Harald Giese

More ...
Usage in Models 1= 1952 ; 1= 1953 ; 7= 1954 ; 2= 1955? ; 5= 1955 ; 1= 1968

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):17

Collection of

Collection of a member from D


Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 2746     Replies: 0
OA50 (OA50)
Jan Terranea

In Electron, the Dutch VERON magazine, issue oct.1951, I found a small article about new Philips crystal-diodes, similair to some well known American types. The Sylvania types have somewhat higher maxima.

OA50(1N34A), OA51(1N54A), OA52(1N57A), OA53(1N58A).

The OA50 type is usable at frequencies up to about 60 MHz.

These diodes are marked with two colored bands to indicate the type;  e.g. green and black = OA50, green and brown = OA51.

Furher data on these diodes can be found at the page on model OA51 under data+characteristic.

Jan Terranea.

End of forum contributions about this tube

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