Up ……… PL
A few of diodes produced in the 1960s. In the picture:
- D813 produced in 3-1966 (silicon zener diode 11.5 … 14 V, pair)
- D809 produced in 10-1968 (silicon zener diode 8 … 9.5 V)
- D814 produced in 3-1971 (silicon zener diode 7 … 14 V)
- D818 produced in 4-1970 (silicon zener diode 8.7V)
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