▼ Menu

30A5

Sensibly equivalent to:
HL94
    
Extras ▼

 

The 30A5 is a power audio output pentode designed for operation with low anode voltages and in transformerless designs. It can deliver 2.1 Watts at 11% total distortion.
Thanks to Graeme Hirst for sending these valves for photographing.
The thin glass tube envelope is 17.5 mm in diameter, and excluding the B7G base pins is 60 mm tall.
Reference: Datasheet. Type 30A5 was first introduced in 1956.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pdiss
30.0
0.15
150
150
-6.7
43
3
22,000
9.2
7.5W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 20, 2013.
Return to Main Index