NJ7P SQL Tube Database Query

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A horizontal ribbon.

35B5
Beam Power Amplifier

EIA Base & Outline

EIA Base: 7BZEIA Bulb: 5-2
Source ........................................ RCA RC-15 - 1947

Application

Miniature type used in output stage of compact, ac/dc radio receivers. Require miniature 7-contact socket.

Mechanical Data

Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-3
EIA Base ...................................... 7BZ
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 35 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 11 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.4 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 117 V
Grid No. 2 Voltage ............................ 117 V
Plate Dissipation ............................. 4.5 W
Grid No. 2 Dissipation ........................ 1.0 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Peak Grid No. 1 Voltage........................ 7.5 V
Transconductance .............................. 5800 µMho
Plate Current (Zero Signal) ................... 40 mA
Plate Current (Maximum Signal) ................ 41 mA
Grid No. 2 Current (Zero Signal) .............. 3 mA
Grid No. 2 Current (Maximum Signal) ........... 7 mA
Load Resistance ............................... 2.5K Ω
Power Output (approx) ......................... 1.5 W

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A horizontal ribbon.

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Sat, 02 Jul 2022 23:17:42 -0700