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12CA5

 
    
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RCA describe the 12CA5 as being designed for operation on a series heater string. The warm-up time for this AF output pentode is given as 11 seconds.The 6AC5 is electrically identical but has a 6.3 Volt heater.
The thin glass tube envelope is 17 mm in diameter, and excluding the B7G base pins is 58 mm tall.
References: Datasheetn & 3002. Type 12CA5 was first introduced in 1955.

 

Pin Connections
B7G
1
2
3
4
5
6
7
k,g3
g1
h
h
g1
g2
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pdiss
Pout
D
12.6
0.6
130
130
-1
32.0
-
16,000
8.1
5W
1.1W
5%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 07, 2013.
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