▼ Menu

45-IU

Sensibly equivalent to:
CV2529 FW4-500
    
Extras ▼

 

The 45-IU full wave rectifier is mounted on a B4 base and from the picture it can be seen that the cathodes are indirectly heated. The cathodes are connected to the heater supply, but the use of an oxide coated cathode will confer a greater emission for a given heater power than a directly heated valve.
The classic envelope is 51 mm in diameter and, excluding the B4 base pins, is 124 mm tall.
Reference: 1043. Type 45-IU was first introduced in 1939.

 

Pin Connections
B4
1
2
3
4
a(1)
a(2)
h,k
h

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
3.5
500
250
Updated January 14, 2013.
Return to Main Index