▼ Menu

Z14

Sensibly equivalent to:
1N5GT 1N5G DF33
See also:
Osram Valve Range Advert
    
Extras ▼

 

The Z14 is a variable μ RF pentode for dry battery operation used for domestic broadcast receivers at RF or as an IF amplifier. The filaments had to have the lowest possible consumption due to the cost of the dry batteries.
The Osram paper label.
Looking under the outer perforated screen.
The wide glass tube envelope is 29 mm diameter, and excluding the IO base pins, is 78 mm tall.
References: Datasheet, 1040 & 1043. Type Z14 was first introduced in 1940.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
f+
a
g2
-
-
f-
-
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.4
0.05
90
90
0
1.2
0.3
1.5M
0.75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 21, 2018.
shape:wide.glass.tube construction:pinch type:pentode age:1930.1940 base:io heater:1.4v pins:8 pin:1.m pin:2.f+ pin:3.a pin:4.g2 pin:5.- pin:6.- pin:7.f- pin:8.- pin:tc.g1
Return to Main Index