0G3

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0G3 VR Tube

The 0G3  (European: 85A2) (P/N 154-0291-00) is an 85 V voltage reference tube with a miniature B7G 7-pin base. It is very similar to the 5651 but has a wider current range, specified as 1–10 mA, and tighter voltage rating, 85±2 V at the recommended 6 mA vs the 5651's 87±5 V. Socket pinout is identical.

Note: The designation is 0G3, the leading zero indicating a tube without a heater, although this is often mis-printed as OG3.

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
Z 157-0064-00 All
661 157-0067-00 All

Reference:

Tube aging procedure / Selection and checking procedure

Links

Pictures

Used in

Some instruments using part 0G3

Instrument Manufacturer Class Model Description Introduced
132 Tektronix Power supply 132 Module power supply 1961
506 Tektronix Oscilloscope 506 20 MHz scope 1964
547 Tektronix Oscilloscope 547 50 MHz oscilloscope 1964
560 Tektronix Oscilloscope 560 1 MHz scope 1961
561 Tektronix Oscilloscope 561 10(4) MHz "General Purpose Scope" 1961
561A Tektronix Oscilloscope 561A 10(4) MHz "General Purpose Scope" 1962
564 Tektronix Oscilloscope 564 Split-Screen Storage Scope 1962
565 Tektronix Oscilloscope 565 10 MHz dual-beam scope 1962
567 Tektronix Oscilloscope 567 Sampling scope 1962
661 Tektronix Oscilloscope 661 Sampling scope 1961
Keithley 610 Keithley Multimeter 610 Electrometer 1960
TU-4 Tektronix Plug-in TU-4 560 Series test load plug-in 1961
Z Tektronix Plug-in Type Z Comparator preamp plug-in 1960