TUBE: 6CK4
FICHIER SOURCE: sheets/049/6/6CK4.pdf
FABRICANT: RCA (Radio Corporation of America, Harrison, NJ)
ANNÉE: 10-59 (octobre 1959)
TYPE: Low-Mu Triode (chauffage indirect) — TV vertical-deflection amplifier

===== PAGE 1 =====
RCA — 6CK4 — LOW-MU TRIODE
GENERAL DATA
Electrical:
Heater, for Unipotential Cathode:
  Voltage (AC or DC) ............. 6.3 ± 10% volts
  Current ........................ 1.25 amp
Direct Interelectrode Capacitances (Approx., without external shield):
  Grid to plate .................. 6.5 µµf
  Grid to cathode and heater ..... 8 µµf
  Plate to cathode and heater .... 1.8 µµf

Characteristics, Class A1 Amplifier (two columns):
  Plate Voltage .................. 100 / 250 volts
  Grid Voltage ................... 0 / -28 volts
  Amplification Factor ........... — / 6.6
  Plate Resistance (Approx.) ..... — / 1200 ohms
  Transconductance ............... — / 5500 µmhos
  Plate Current .................. 125* / 40 ma
  Plate Current for grid volts = -38 .... — / 10 ma
  Grid Voltage (Approx.) for plate ma = 0.5 .... — / -50 volts

Mechanical:
  Operating Position ............. Any
  Maximum Overall Length ......... 3-7/16"
  Maximum Seated Length .......... 2-7/8"
  Maximum Diameter ............... 1-9/32"
  Bulb ........................... T9
  Base ........................... Short Intermediate-Shell Octal 6-Pin with External Barriers, Arrangement 1 (JEDEC Group 1, No. B6-60)
  Basing Designation (Bottom View) ... 8JB
  Pin 1 - Grid
  Pin 2 - Heater
  Pin 3 - Grid
  Pin 5 - Plate
  Pin 7 - Heater
  Pin 8 - Cathode

VERTICAL-DEFLECTION AMPLIFIER
Maximum Ratings, Design-Maximum Values (525-line, 30-frame system):
  DC PLATE VOLTAGE ................... 550 max volts
  PEAK POSITIVE-PULSE PLATE VOLTAGE .. 2000 max volts
  PEAK NEGATIVE-PULSE GRID VOLTAGE ... 250 max volts
  CATHODE CURRENT: Peak 350 max ma; Average 100 max ma
RCA Electron Tube Division, Harrison, NJ. 10-59.

===== PAGE 2 =====
PLATE DISSIPATION ...................... 12 max watts
PEAK HEATER-CATHODE VOLTAGE:
  Heater negative w.r.t. cathode ....... 200 max volts
  Heater positive w.r.t. cathode ....... 200 max volts (DC component must not exceed 100 volts)
Maximum Circuit Values:
  Grid-Circuit Resistance: For cathode-bias operation .... 2.2 max megohms
[*125 mA = zero-bias peak; * value measured by recurrent waveform method; pulse duration not exceeding 15% of vertical scanning cycle = 2.5 ms in 525-line 30-frame]
RCA Electron Tube Division, Harrison, NJ. 10-59.