ECH42
ECH42 is Triode - Hexode manufactured by Philips Semiconductors.
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ECH42 sheet 1 2 3 3 4 5 A B C D E F G H I J FP date 1953.10.10 1953.10.10 1953.10.10 1960.10.10 1953.10.10 1953.10.10 1949.01.25 1949.01.25 1949.11.11 1949.11.11 1949.06.06 1949.06.06 1848.11.12 1848.11.12 1950.12.12 1950.12.12...
