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ID = 18913
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Triode, vacuum 
Identical to 6С51Н
Similar Tubes
Different connections:

Base Nuvistor
Filament Vf 6.3 Volts / If 0.13 Ampere / Indirect

6C51H (kyrill. "C" = entspricht lat. "S" und bedeutet hier Triode). Die 6s51n bzw. 6C51H zeigt bei etwa gleich großer Steilheit wie die 6C52H einen kleineren Innenwiderstand und einen niedrigeren Verstärkungsfaktor μ.

Tube prices 1 Tube prices (visible for members only)
6С51Н: EP
Egon Penker

6С51Н: Datenblatt
Wesselin Tzenow † 25.5.10

from Just Qvigstad

Usage in Models 1= 1970?? ; 1= 1977?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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