19BY7

Small Signal Pentode — Noval

Data: 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

UF85

Similar Tubes (Not Drop-In Compatible)

EF805S

Brans lists as equivalent — verify pin compatibility before substituting

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max)300V

Screen Voltage (max)Screen Voltage (max)170V

Anode Dissipation (max)Anode Dissipation (max)3.2W

Typical Operating

Anode Voltage (typical)Anode Voltage (typical)170V

Notes

Series heater design: 19 V / 0.1 A for series string operation in AC/DC receivers.
The UF85 is the identical European Mullard/Philips designation.

Pin Layout — Noval

1Suppressor Grid (internally connected to cathode)

2Anode

3

Socket-Compatible Tubes ⚠ Not electrically compatible

12B4A 6J11P 6J9P AL860

References