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3B24W

Sensibly equivalent to:
CV2858
    
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The 3B24W is a high voltage half wave rectifier with a moisture stable base.
The picture above shows the helical filament and the coating is also visible. Although the voltage is not quoted it is probably rated for up to 5,000 Volts.
The wide glass tube envelope is 35 mm in diameter and, excluding the UX4 base pins, is 102 mm tall.
Reference: data-sheet.

 

Pin Connections
UX4
1
2
3
4
tc
f(tap)
f
nc
f
a

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
mAa
5.0
3.0
60
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 08, 2022.
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