Sharp-Cutoff Pentode
The 1620 Vacuum tube is a specially selected
non-microphonic metal type used as a biased
detector or high-gain audio amplifier in radio
receivers. It requires an octal socket and may be mounted
in any position.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage Heater Positive with
Respect to Cathode:
DC Component ................... 90 V
Heater Negative with Respect to Cathode
DC Component ................... 90 V
Preferred Substitutes .............. 6J7, 6J7G,
6W7, CV657
Substitutes ................ 6K7, 6S7, 6U7.