TUBE: 6FW5
SOURCE FILE: sheets/127/6/6FW5.pdf
MANUFACTURER: Tung-Sol (Tung-Sol Electric Inc., Electron Tube Division, Bloomfield, New Jersey)
YEAR: 1961 (OCTOBER 1, 1961)
PAGES: 4

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TUNG-SOL 6FW5 — BEAM PENTODE
COATED UNIPOTENTIAL CATHODE. FOR HORIZONTAL-DEFLECTION AMPLIFIER APPLICATIONS IN TV RECEIVERS. ANY MOUNTING POSITION.
GLASS BULB T-12, SHORT MEDIUM SHELL 6 PIN OCTAL B6-112, OUTLINE DRAWING JEDEC 12-14. BOTTOM VIEW BASING DIAGRAM JEDEC 6CK.
Basing labels: P (pin5), K,G3,IS (pin3), H (pin2), H (pin7), G1 (pin1), G2 (pin8).
The 6FW5 is a beam-power pentode primarily designed for use as the horizontal-deflection amplifier in TV receivers. Its high zero-bias plate current at low plate and screen voltages makes the tube well suited for use in receivers that operate at low plate-supply voltages.
DIRECT INTERELECTRODE CAPACITANCES (approx., without external shield):
  Grid #1 to Plate: (G1 to P) ........ 0.5 pf
  Input: G1 to (H+K+G2+B.P.) ........ 15 pf
  Output: P to (H+K+G2+B.P.) ........ 7.0 pf
HEATER CHARACTERISTICS AND RATINGS (Design Maximum values, EIA standard RS-239):
  Average Characteristics ........ 6.3 Volts, 1200 mA
  Heater Supply Limits: Voltage Operation ........ 6.3 ± 0.6 Volts
  Max Heater-Cathode Voltage: Heater positive wrt cathode (total DC & peak) ........ 200 Volts; Heater negative wrt cathode DC ........ 100 Volts; total DC & peak ........ 200 Volts

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MAXIMUM RATINGS (Design Maximum values, EIA standard RS-239) — HORIZONTAL-DEFLECTION AMPLIFIER SERVICE:
  DC Plate-Supply Voltage (Boost + DC power supply) ........ 770 Volts
  Peak Positive Pulse Plate Voltage ........ 6500 Volts
  Screen Voltage ........ 220 Volts
  Negative DC Grid #1 Voltage ........ 55 Volts
  Peak Negative Grid #1 Voltage ........ 330 Volts
  Plate Dissipation ........ 18 Watts
  Screen Dissipation ........ 3.6 Watts
  DC Cathode Current ........ 175 mA
  Peak Cathode Current ........ 610 mA
  Grid #1 Circuit Resistance ........ 1.0 Megohms
  Bulb Temperature at Hottest Point ........ 220 °C
TYPICAL OPERATING CHARACTERISTICS — AVERAGE CHARACTERISTICS (3 columns):
  Plate Voltage ........ 5000 / 60 / 250 Volts
  Screen Voltage ........ 150 / 150 / 150 Volts
  Grid #1 Voltage ........ - / 0 / -22.5 Volts
  Plate Resistance (approx.) ........ - / - / 18000 Ohms
  Transconductance ........ - / - / 7300 µmhos
  Plate Current ........ - / 345 / 65 mA
  Screen Current ........ - / 27 / 1.8 mA
  Grid #1 Voltage (approx.) for Ib=1.0 mA ........ -100 / - / -42 Volts
  Triode Amplification Factor ........ - / - / 4.4
Footnotes: A=525-line 30-frame TV system; B=grid-leak bias requires cathode-bias resistor; C=applied short interval (2 s max); D=triode connection (screen tied to plate) Eb=Ec2=150 V, Ec1=-22.5 V.

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[courbes seules — pas de données tabulaires] Grid #2 current vs grid #1 volts (Eb=250); Plate current vs grid #1 volts (Eb=250). PLATE #6288

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[courbes seules — pas de données tabulaires] Plate/screen characteristics Ec2=150 V; Plate/screen characteristics Ec1=0 V vs plate volts.