5M-K9 NEC Japan NOS (58/40) (sold out)
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5M-K9 NEC Japan NOS in white boxes 1960's (5MK9)
58/40
half-wave rectifier
Filament = 5V @ 600ma
DC Output Current = 60ma
PIV = 1000VDC
AC Plate Voltage = 350V (rms)
Power Supply Capacitor = 8uf
See more: vacuum tube
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