2D2S Russian noise diode tube. NOS. Lot of 2

Description

Russian noise diode tube 2D2S.
High quality made for the military equipment
Lot of 2
Made in USSR
Military equipment
Russian noise
diodes
tube
2D2S
(2Д2C – rus.).
The noise diode with the thorium oxide cathode of direct heat.
It is intended for generation of noise, measurement of sensitivity of amplifiers and receiving devices very high frequencies of the range in equipment of a special purpose.
Longevity at least 400 h.
Mass no more than 30 g.
Main technical characteristics 2D2S:
Rated electrical data:
Heat tension........ 1.4 ±0,2 V
Filament current........ 1.45 ±0.15 A
Leakage current between the anode and the cathode (in case of Ua =-200 V)........ no more 10мкА
The steepness of the characteristic of current of the anode (in case of Ua = 135 V)........ no more than 0,08 mA / V
Coefficient of nonlinearity of noise........ no more than 10%
Capacity between the anode and the cathode........ 0.57 pF
Limit operational data:
Heat tension........ 1.2 - 1.7B
Anode tension........ 140 V
Reverse voltage........ 200 V
Anode current........ 40 mA
Steepness of the characteristic........ 0.1 mA / V
The capacity dispersed by the anode........ 5 W
Interval of working temperatures of environment........ from –60 to +70 °C
This never been used, from the old stock.
(You buy what you see at the foto).
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