SHARP CUTOFF PENTODE
Military Numbers:
5960-00-179-3710
DLA900-82-C-1938
The General Electric J.A.N. 6AU6AWC / 6136 Vacuum Tube is a
miniature molitary type used in compact radio
equipment as an RF
amplifier especially in high-frequency, wide-band
applications. It is also used as a limiter tube in
FM equipment. 6AU6WC / 6136 tube requires a miniature 7-contact socket
and may be mounted in any position.
When you see a suffix like WC, it indicates a rugged milspec tube.
So, the answer is that a 6AU6WC is a 100% safe replacement for a 6AU6.
In audio equipment, the reverse substitution is probably safe.
The 6AU6 was designed for use as an IF amplifier in VHF receivers;
they were used in the millions in tubed TV sets.
The milspec variant is intended for Rough Field Service;
something audio equipment is normally not exposed to.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Heater Warm-up Time ............................ 11 s
Maximum Heater-Cathode Voltage:
Heater Positive with Respect to Cathode
DC Component .............................. 100 V
Total DC and Peak ......................... 200 V
Heater Negative with Respect to Cathode:
Total DC and Peak ......................... 200 V
Preferred Substitutes
................... 6AU6, 6AU6A, 6AU6WA, 6AU6WB, 6136 8245A 6HS6 EF94
Substitutes
..... 6BA6 6HR6 6AH6 6CG6 6AG5 6BC5 6CE5