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UB41

 
    
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The UB41 is a double diode typically used for signal detection and similar applications.
The two small diode sections are in the lower part of the envelope. The location pip is moulded into the glass skirt.
The other side also reveals little information about the inner construction.
The thin glass tube envelope is 20 mm in diameter, and excluding the B8A base pins is 53 mm tall.
Reference: Datasheet.

 

Pin Connections
B8A
1
2
3
4
5
6
7
8
h
-
k(2)
a(2)
s
a(1)
k(1)
h

 

Absolute Maximum Operating Conditions
Diode
Vh
Ah
Va
mAa
19.0
0.1
165
9.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 26, 2016.
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