TUBE: EL11
SOURCE FILE: sheets/030/e/EL11.pdf
MANUFACTURER: Philips (Electronic Tube Handbook)
YEAR: 16.9.1948 (FP 1999.07.02)
PAGES: 3 (pages 1-2 data, 3 = Philips handbook cover)
LANG: trilingual EN/FR/DE

===== PAGE 1 =====
PHILIPS EL11 — OUTPUT PENTODE / PENTHODE DE SORTIE / ENDPENTHODE
Heating: indirect by A.C.; parallel supply
 Vf = 6.3  V
 If = 0.9  A
Dimensions in mm. Envelope max 51 dia, max 110 height, max 16.5 base.
Pinout (from diagram, side-contact/8-pin европ. base — Stiftsockel):
 a (anode) = top cap
 pin1 = g2
 pin2 = g1
 pin3 = k,g3 (cathode + suppressor grid)
 pin4 = (nc)
 pin5 = f (heater)
 pin6 = f (heater)
 pin7 = f
 pin8 = a
 [diagram: a top, g2 left, g1 right, k.g3 / f / f bottom — European 8-pin]
Capacities: Cag1 < 0.8 pF

===== PAGE 2 =====
Operating characteristics class A:
 Va    250  V
 Vg2   250  V
 Vg1   -6   V
 Rk    150  ohm
 Ia    36   mA
 Ig2   4    mA
 S     9    mA/V
 Ri    50   kohm
 Ra    7    kohm
 mu(g2g1)  25
 Wo (dtot=10%)  4.5  W
 Vi (dtot=10%)  4.2  Veff
 Vi (Wo=50mW)   0.33 Veff
Operating characteristics class AB:
 Va    250  V
 Vg2   250  V
 Rk    140  ohm
 Raa   10   kohm
 Vi    0 ... 6.7  Veff
 Ia    2x24 ... 2x28.5  mA
 Ig2   2x2.8 ... 2x4.6  mA
 Wo    0 ... 8.2  W
 dtot  - ... 3.1  %
Limiting values:
 Va0   max 550  V
 Va    max 250  V
 Wa    max 9    W
 Vg20  max 550  V
 Vg2   max 275  V
 Ik    max 55   mA
 Wg2 (Vi=0V)    max 1.2  W
 Wg2 (Wo=max)   max 2.5  W
 Vg1 (Ig1=+0.3uA)  max -1.3  V
 Rg1   max 1    Mohm
 Rfk   max 5    kohm
 Vfk   max 50   V

===== PAGE 3 =====
PHILIPS Electronic Tube Handbook front page — EL11 sheet index, pages 1948.09.16, FP 1999.07.02.