5743

Name: 5743
Brand: RCA

Small Signal Pentode — B7G

RCAData: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.

↗ TDSL ↗ Radiomuseum

Known Equivalents & Substitutes

6AK56AK5W5654EF95CV850CV40106J1P403A

Similar Tubes (Not Drop-In Compatible)

6AH6

Higher-gm sharp-cutoff pentode on same B7G base but different pinout and much higher plate current — not a drop-in

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)180V

Screen Voltage (max)Screen Voltage (max)140V

Anode Dissipation (max)Anode Dissipation (max)1W

Screen Dissipation (max)Screen Dissipation (max)0.5W

Cathode Current (max)

Notes

Ruggedized version of 6AK5 with tighter parameter controls, improved microphonics, and longer life. Designed for industrial and military applications.
5654 is an alternate military designation for essentially the same ruggedized 6AK5.
EF95 is the European equivalent designation.
6J1P (6Ж1П) is the Soviet equivalent with same B7G base and pinout.

Pin Layout — B7G

1Anode

2Screen Grid (g2)

3Heater

4

Socket-Compatible Tubes ⚠ Not electrically compatible

6AH6

References

https://tdsl.duncanamps.com/show.php?des=6AK5