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GERMANIUM DIODES




Data for the following Diodes: OA70,OA71,OA79 and OA81.

Germanium Diodes


The following table lists the parameters for early Germanium Diodes.




Type Resistance at +1v Resistance at 10v Resistance at 30v Reverse Voltage Forward Current Peak Forward Current
GD3 350R max 50K min - -25v max 30ma 100ma
GD4 350R max 250K min - -50v max 30ma 100ma
GD5 350R max 500K min 300k min -85v max 30ma 100ma

Germanium Diodes Later Series

Type Max Inverse Voltage Peak Average Max Forward Current Peak Average
OA70 22.5v 15v 150ma 50ma
OA71 90v 60v 150ma 35ma
OA79 45v 30v 100ma 4 ma
OA81 115v 90v 150ma 50ma

Germanium Diode Equivalents

Brimar GEC BTH Mullard - - - - -
GD3 GEX33 CG5E - - - - - -
GD3 GEX35 CG12E OA60 - - - - -
GD3 GEX99 - - - - - - -
GD4 GEX44 - - - - - - -
GD4 GEX44/1 CG1E - - - - - -
GD4 GEX45 CG6E - - - - - -
GD5 GEX54 CG1E - - - - - -
GD5 GEX55 CG4E OA61 - - - - -




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Last updated 3.7.2004




2003 © Maurice Woodhead