5U4G - Selectron

Base & Bulb ( RCA RC-15 - 1947)

Substitute Data

Preferred Substitutes ......................... 5AS4
Substitutes ................................... 5V3

Application

Glass octal type used in power supply of radio equipment having high dc requirements. Requires octal socket. Vertical tube mounting is preferred but horizontal mounting is permisible if pins 1 and 4 are in vertical plane.

Mechanical Data

Bulb .......................................... ST-16
Base .......................................... Med or short med Shell octal 5-Pin
Outline ....................................... 16-3
EIA Base ...................................... 5T
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 5.0 V
Heater Current ................................ 3.0 A

Maximum Ratings (Design Center Values)

Each Diode
Peak Inverse Plate Voltage .................... 1550 V
Voltage Drop @ Current ........................ 44 V @ 225 mA

Characteristics and Typical Operation

Rectifier
AC Plate Supply Voltage Each Plate (RMS) ...... 450 V
Input Capacitor ............................... 4 Mfd
Effective Plate Supply Impedance Each Plate ... 75 Ω
DC Half-Load Output Current ................... 112.5 mA
DC Half-Load Output Voltage ................... 515 V
DC Output Current ............................. 225 mA
DC Output Voltage ............................. 445 V
Voltage Regulation (Half-Load to Full-Load) ... 70 V

Characteristics and Typical Operation

Rectifier
AC Plate Supply Voltage Each Plate (RMS) ...... 550 V
Input Inductor ................................ 3 H
DC Half-Load Output Current ................... 112.5 mA
DC Half-Load Output Voltage ................... 450 V
DC Output Current ............................. 225 mA
DC Output Voltage ............................. 420 V
Voltage Regulation (Half-Load to Full-Load) ... 30 V

Characteristic Curves