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ID = 53072
Great Britain (UK)
Brand: Plessey Semiconductors, GEC Plessey; Swindon
Tube type:  IC - Integrated Circuit   Power/Output 
Identical to SL403
Similar Tubes
Normally replaceable-slightly different:

Base Wires
Was used by Radio/TV-reception etc.

Early Integrated Circuit Power Amplifier manufactured by GEC Plessey, min. 3.5 W rms sinewave output @ RL: 7.5 Ohm.
10 pin DIL package with integral thermal conductor from the chip for connection to an external heatsink.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
62 x 11 x 6 mm / 2.44 x 0.43 x 0.24 inch
Weight 8 g / 0.28 oz
Information source -- Collector info (Sammler)   

SL403: Plessey
Günther Stabe † 19.8.20

sl403_s.png SL403: Plessey
Günther Stabe † 19.8.20

SL403: Plessey
Günther Stabe † 19.8.20

Usage in Models 1= 1970?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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