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The 7586  (P/N 154-0306-00) is a Nuvistor triode vacuum tube, introduced in 1959 as the first tube of the series.

The related 8393 (13-volt version of the 7586) is used in the 1A7 and 453.

The Russian 6С51Н (Latin: 6S51N) is similar but has different connections (long leads).

Key Specifications

Heater 6.3 V, 135 mA
Plate voltage max. 110 V
Plate dissipation max. 1 W
Cathode current max. 15 mA
Transconductance 10 mS @ 9 mA
Amplification Factor (µ) 35

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
1A2, 3B5 157-0080-00 All
3A7 157-0099-00 All
10A2, 82 157-0103-00 All
2A61 157-0105-00 987 - 1412
2A61 157-0106-00 1413-On
3A3 157-0110-00 Up-to-4989
3A8 157-0110-00 All
321A, 1A1, 1A2, 1A5, 3A1, 3A5, 3A6, 3A74, 3S76, 3T77, 3T77A, 4S1, 6R1, 11B1, 11B2, 11B2A 157-0121-00 All
10A2A 157-0128-00 All

Part number 157-0105-00 was replaced by 157-0121-00.


Tube aging procedure / Selection and checking procedure



Used in

Some instruments using part 7586

Instrument Manufacturer Class Model Description Introduced
10A2 Tektronix Plug-in 10A2 50 MHz dual channel amplifier plugin 1963
10A2A Tektronix Plug-in 10A2A 100 MHz dual channel amplifier plugin 1967
11B1 Tektronix Plug-in 11B1 50 MHz single timebase 1964
1A1 Tektronix Plug-in 1A1 50 MHz dual channel amplifier 1964
1A2 Tektronix Plug-in 1A2 50 MHz dual channel amplifier 1964
1A5 Tektronix Plug-in 1A5 50 MHz Differential Amplifier 1967
321 Tektronix Oscilloscope 321 Portable single channel scope 1960
321A Tektronix Oscilloscope 321A Portable single channel scope 1964
3A1 Tektronix Plug-in 3A1 10 MHz dual-trace amplifier plug-in 1962
3A1S Tektronix Plug-in 3A1S 25 MHz vertical sampling amplifier plug-in 1961
3A3 Tektronix Plug-in 3A3 dual differential amplifier plug-in 1964
3A5 Tektronix Plug-in 3A5 Automatic/programmable amplifier plug-in 1965
3A6 Tektronix Plug-in 3A6 10 MHz dual-trace plug-in 1966
3A7 Tektronix Plug-in 3A7 Differential amplifier plug-in 1965
3A74 Tektronix Plug-in 3A74 2 MHz four channel vertical amp plug-in 1962
3A8 Tektronix Plug-in 3A8 Operational amplifier plug-in 1965
3B5 Tektronix Plug-in 3B5 Automatic time base plug-in 1966
3S76 Tektronix Plug-in 3S76 Dual Channel Sampling plug-in 1962
3T77 Tektronix Plug-in 3T77 Sampling sweep plug-in 1962
3T77A Tektronix Plug-in 3T77A Sampling sweep plug-in 1966
4S1 Tektronix Plug-in 4S1 Dual channel sampling plugin 1962
4S2 Tektronix Plug-in 4S2 Dual channel sampling plugin 1962
6R1 Tektronix Plug-in 6R1 Digital readout plug-in 1962
6R1A Tektronix Plug-in 6R1A Digital readout plug-in 1964
82 Tektronix Plug-in 82 85 MHz dual-trace amplifier 1962
86 Tektronix Plug-in 86 vertical amplifier 1963
9A1 Tektronix Plug-in Type 9A1 24 MHz dual trace amplifier plug-in 1964
9A2 Tektronix Plug-in Type 9A2 23 MHz amplifier plug-in 1964
M Tektronix Plug-in Type M 20 MHz quad-channel amplifier 1962
S-311 Tektronix Plug-in S-311 Programmable dual-trace sampling plug-in 1965