TUBE: 6BQ6GTB (= 6BQ6GA, 6CU6; heater-only diff from 17BQ6GTB)
SOURCE FILE: sheets/093/6/6BQ6GTB.pdf
MANUFACTURER: General Electric (GE Electronic Tubes), ET-T1484
YEAR: 1957 (Page footer 12-57)
PAGES: 4

===== PAGE 1 =====
GE 6BQ6-GTB — BEAM PENTODE — FOR TV HORIZONTAL-DEFLECTION AMPLIFIER APPLICATIONS — ET-T1484 Page 1
DESCRIPTION AND RATING
The 6BQ6-GTB is a beam-power pentode designed primarily for use as horizontal-deflection amplifier in TV receivers. The tube exhibits high perveance, high plate current at low plate and screen voltages, and a high ratio of plate-to-screen current.
GENERAL
ELECTRICAL                                  6BQ6-GTB
  Cathode—Coated Unipotential
  Heater Voltage, AC or DC ........ 6.3 Volts
  Heater Current ........ 1.2 Amperes
  Direct Interelectrode Capacitances:
    Grid-Number 1 to Plate ........ 0.6 µµf
    Input ........ 15 µµf
    Output ........ 7.0 µµf
MECHANICAL
  Mounting Position—Any
  Envelope T-9
  Base—B6-81, or B7-7 Intermediate-Shell Octal 6- or 7-Pin or B6-84, or B7-59 Short Intermediate-Shell Octal 6- or 7-Pin
  Top Cap—C1-3 or C1-33, Skirted Miniature
MAXIMUM RATINGS — HORIZONTAL-DEFLECTION AMPLIFIER SERVICE — DESIGN-CENTER VALUES UNLESS OTHERWISE INDICATED
  DC Plate-Supply Voltage (Boost + DC Power Supply) ........ 600 Volts
  Peak Positive Pulse Plate Voltage ........ 6000 Volts (absolute max)
  Peak Negative Pulse Plate Voltage ........ 1250 Volts
  Screen Voltage ........ 200 Volts
  Peak Negative Grid-Number 1 Voltage ........ 300 Volts
  Plate Dissipation ........ 11 Watts
  Screen Dissipation ........ 2.5 Watts
  DC Cathode Current ........ 110 Milliamperes
  Peak Cathode Current ........ 400 Milliamperes
  Heater-Cathode Voltage:
    Heater Positive wrt Cathode: DC Component ........ 100 Volts; Total DC and Peak ........ 200 Volts
    Heater Negative wrt Cathode: Total DC and Peak ........ 200 Volts
  Grid-Number 1 Circuit Resistance ........ 0.47 Megohms
  Bulb Temperature at Hottest Point ........ 220 C
BASING DIAGRAM: EIA 6AM
TERMINAL CONNECTIONS:
  Pin 1—No Connection
  Pin 2—Heater
  Pin 3—No Connection
  Pin 4—Grid Number 2 (Screen)
  Pin 5—Grid Number 1
  Pin 7—Heater
  Pin 8—Cathode and Beam Plates
  Cap—Plate
  (Pin 1 omitted on Bases B6-81 and B6-84.)
PHYSICAL DIMENSIONS: T9; EIA 9-49 or 9-50

===== PAGE 2 =====
CHARACTERISTICS AND TYPICAL OPERATION
AVERAGE CHARACTERISTICS (2 columns):
  Plate Voltage ........ 60 / 250 Volts
  Screen Voltage ........ 150 / 150 Volts
  Grid-Number 1 Voltage ........ 0 / -22.5 Volts
  Plate Resistance, approximate ........ - / 14500 Ohms
  Transconductance ........ - / 5900 Micromhos
  Plate Current ........ 260 / 57 Milliamperes
  Screen Current ........ 26 / 2.1 Milliamperes
  Grid-Number 1 Voltage approx (Ib=1.0 mA) ........ - / -43 Volts
  Triode Amplification Factor ........ - / 4.3
Notes: * Without external shield; † 525-line 30-frame TV system; ‡ value is absolute maximum rating; § grid-leak bias requires cathode-bias resistor; △ applied for short interval (2 s max); ¶ triode connection (screen tied to plate) Eb=Ec2=150 V, Ec1=-22.5 V.

===== PAGE 3 =====
[courbes seules — pas de données tabulaires] AVERAGE PLATE CHARACTERISTICS (Ec2=150 V) + AVERAGE PLATE CHARACTERISTICS (Ec1=0 V)

===== PAGE 4 =====
[courbes seules — pas de données tabulaires] AVERAGE TRANSFER CHARACTERISTICS (Eb=250 V) — plate current and screen current vs grid-No.1 voltage