▼ Menu

10LD3

Sensibly equivalent to:
141DDT 14L7 B109 DH118 DH142 UBC41
    
Extras ▼

 

The 10LD3 is a double signal diode triode with a common cathode. This configuration was typical of valves designed for superhet receivers. The diodes would be used to demodulate an AM signal and also to develop an AGC voltage to control the gain of the IF amplifiers and possible the RF amplifier if fitted. The triode would function as a voltage amplifier for the demodulated audio signal.
The thin glass envelope is 20 mm in diameter and, excluding the B8A base pins, is 53 mm tall.
References: Datasheet & 1040. Type 10LD3 was first introduced in 1953.

 

Pin Connections
B8A
1
2
3
4
5
6
7
8
h
a
g1
s
a(d2)
a(d1)
k
h

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
13.0
0.1
100
-0.7
0.8
54k
1.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 25, 2013.
Return to Main Index