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XR1-1600A

Sensibly equivalent to:
8063 CV5234 ZT1011
    
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The XR1-1600A or ZT1011 is a triode Thyratron designed for industrial control applications. The peak current is 20 Amps. It was the successor to the XR1-1600.
The UX4 base also has a locating pin for bayonet bases.
See ZT1011 for more images.
The wide glass tube envelope is 38 mm in diameter, and excluding the UX4 base pins is 102 mm tall.
Reference: Data-sheet. Type XR1-1600A was first introduced in 1961. See also 1961 adverts.

 

Pin Connections
UX4
1
2
3
4
tc
f
fct
g1
f
a

 

Absolute Maximum Operating Conditions
The Thyratron
Vh
Ah
Va
mAa
2.5
9.5
1,500
1,600
PDF scanned from an original document held by the museum
Updated January 17, 2026.
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