ECC81
ECC81 is Double Triode 1955 manufactured by Philips Semiconductors.
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ECC81 sheet 1 2 A B C D E F G H I J K FP date 1955.03.03 1955.03.03 1951.06.06 1951.06.06 1955.01.01 1955.01.01 1955.01.01 1955.01.01 1951.06.06 1951.06.06 1951.10.10 1951.10.10 1951.10.10...
