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EZ40

Sensibly equivalent to:
66KU 6BT4 CV3891 U150 U718 UU9
See also:
EZ40, EZ41 & UY41 Advert
    
Extras ▼

 

The EZ40 full wave rectifier offers a respectable output current of 90 mA, sufficient for most domestic apparatus.
The anodes are stacked vertically over the common central indirectly heated cathode. Each anode is formed into a cross for better heat dissipation. Our Philips EZ40 uses anodes with long side arms one anode arms down and the other at right angles with arms up.
Each anode has four flanges organised into a + shape.
The cathode tube and insulated heater. The hairpin heater is made from coiled wire.
The maximum reservoir capacitor, a measure of the peak current rating, was 50 µF. The minimum effective series resistance is 300 Ohms.
The thin glass tube envelope is 20 mm in diameter and, excluding the B8A base pins, is 73 mm tall.
References: Data-sheet & 1040. Type EZ40 was first introduced in 1954.

 

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

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
6.3
0.58
350
90
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 27, 2020.
shape:thin.glass.tube construction:all.glass type:rectifier.fw age:1940.1950 base:b8a heater:6.3v pins:8 pin:1.h pin:2.a pin:3.ic pin:4.ic pin:5.ic pin:6.a pin:7.k pin:8.h
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