TUBE: 6CK4
FICHIER SOURCE: sheets/127/6/6CK4.pdf
FABRICANT: Tung-Sol (Tung-Sol Electric Inc., Bloomfield, NJ)
ANNÉE: March 1, 1958 (Plate #5204)
TYPE: Low-Mu Triode (chauffage indirect) — TV vertical deflection amplifier

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TUNG-SOL — 6CK4 — TRIODE
Bulb: T-9, 2 7/8" MAX, 3 7/16" MAX, 1 3/16" MAX dia. Glass Bulb. Short Intermediate Shell 6 Pin Octal, 8J8.
COATED UNIPOTENTIAL CATHODE
HEATER: 6.3 VOLTS, 1.25 AMP, AC OR DC
ANY MOUNTING POSITION
PINOUT (Bottom View): pin1=g; pin2=h; pin3=g; pin5=p; pin7=h; pin8=k
[Diagram labels: P (top), G, H, H, G, K — les deux broches grille (1 et 3) sont reliées à la grille unique]
The 6CK4 is a low mu triode intended for use primarily as a vertical deflection amplifier in television receivers. Contained in a T-9 envelope, high zero-bias plate current.

DIRECT INTERELECTRODE CAPACITANCES:
  GRID TO PLATE (G to P) ......... 6.5 µµf
  INPUT: G to (H+K) .............. 8.0 µµf
  OUTPUT: P to (H+K) ............. 1.8 µµf

RATINGS (interpreted to design center system) — VERTICAL DEFLECTION AMPLIFIER(B):
  HEATER VOLTAGE ....................... 6.3 VOLTS
  MAXIMUM DC PLATE VOLTAGE ............. 550 VOLTS
  MAXIMUM PEAK POSITIVE PULSE PLATE VOLTAGE (ABS MAX) .... 2000 VOLTS
  MAXIMUM PEAK NEGATIVE PULSE GRID VOLTAGE .............. 250 VOLTS
  MAXIMUM PLATE DISSIPATION(C) ......... 12.0 WATTS
  MAXIMUM AVERAGE CATHODE CURRENT ...... 100 MA
  MAXIMUM PEAK CATHODE CURRENT ......... 350 MA
  MAXIMUM GRID CIRCUIT RESISTANCE (self bias) .... 2.2 MEGOHMS
  MAXIMUM HEATER-CATHODE VOLTAGE:
    Heater negative w.r.t. cathode: Total DC and Peak .... 200 VOLTS
    Heater positive w.r.t. cathode: DC 100 VOLTS; Total DC and Peak 200 VOLTS
Tung-Sol Electric Inc., Bloomfield, NJ. March 1, 1958. Plate #5204.

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TYPICAL OPERATING CONDITIONS AND CHARACTERISTICS:
  HEATER VOLTAGE ................... 6.3 VOLTS
  HEATER CURRENT .................. 1.25 AMP
  PLATE VOLTAGE ................... 250 VOLTS
  GRID #1 VOLTAGE ................. -28 VOLTS
  PLATE CURRENT ................... 40 MA
  TRANSCONDUCTANCE ................ 5500 µMHOS
  AMPLIFICATION FACTOR ............ 6.6
  PLATE RESISTANCE (APPROX.) ...... 1200 OHMS
  GRID VOLTAGE FOR Ib = 0.5 MA .... -50 VOLTS
  PLATE CURRENT AT Ec = -38 VDC ... 10 MA
  ZERO BIAS PLATE CURRENT: Eb=100V, Ec=0 (instantaneous values) .... 125 MA
[Notes A,B,C: design-maximum ratings; 525-line 30-frame; grid leak bias needs cathode bias resistor]