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5642

 
    
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The 5642 is an EHT rectifier diode designed specifically for use in oscilloscope EHT supplies and as a measuring instrument component it is a special quality device, the naming convention clearly shows this.
The consumer DY70 is closely related to this special quality professional device.
The filament is a close wound helix and is oxide coated.
The thin glass tube envelope is 9 mm in diameter, and excluding the lead out wires is 48 mm tall.
Reference: Datasheet. Type 5642 was first introduced in 1953.

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
1.25
0.2
3,600
0.25
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 26, 2014.
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