RCA Tube Data For Modeling Research

(RCA Receiving Tube Manual, RC-19, 1959)
data for positive input voltages is grid-shifted from +1.0volt first

RCA 12ax7 data (V, mA)

  • vgc = +1.0
  • 0.0,0.121 5,1.60 18,2.03 41,2.66 79,3.74 116,4.79
  • vgc = +0.5
  • 0.0,0.06 20,1.04 59,2.08 81,2.53 118,3.57 134,4.0
  • vgc = 0.0
  • 0.0,0.0 7,0.28 17,0.56 43,1.07 68,1.46 86,1.79 119,2.45 134,2.79
  • 158,3.39 181,3.98
  • vgc = -0.5
  • 0.0,0.0 24,0.18 59,0.56 95,1.08 122,1.54 147,2.02 173,2.60 193,3.06
  • 214,3.55
  • vgc = -1.0
  • 52,0.11 76,0.28 108,0.59 129,0.86 155,1.24 178,1.64 211,2.32 246,3.12
  • vgc = -1.5
  • 97,0.11 137,0.40 169,0.76 193,1.13 226,1.63 277,2.66
  • vgc = -2.0
  • 142,0.12 171,0.30 206,0.62 243,1.10 281,1.73 311,2.33
  • vgc = -2.5
  • 183,0.12 208,0.24 237,0.46 265,0.74 294,1.13 321,1.56 342,1.96
  • vgc = -3.0
  • 225,0.12 248,0.20 280,0.40 313,0.72 339,1.05 372,1.57
  • vgc = -3.5
  • 284,0.12 308,0.27 334,0.46 370,0.81 397,1.17
  • vgc = -4.0
  • 319,0.12 342,0.22 372,0.38 402,0.65 425,0.90

    12ax7data.txt

    RCA 12at7 data (V, mA)

  • vgc = +1.0
  • 0,0.145 4,1.62 9,2.72 21,4.64 82,12.37 117,17.69
  • vgc = 0.0
  • 14,0.4 41,2.6 72,5.7 107,9.5 129,12.5 161,17.1 203,23.8
  • vgc = -1.0
  • 50,0.4 79,02.0 112,4.5 131,6.1 166,9.4 181,10.9 216,14.9 264,21.3
  • vgc = -2.0
  • 92,0.3 121,1.2 157,2.7 189,4.7 204,5.9 234,8.7 284,14.4 320,18.9
  • vgc = -3.0
  • 150,0.3 192,1.7 235,4.0 269,6.4 302,9.3 331,12.1 371,16.9
  • vgc = -4.0
  • 200,0.4 235 1.4 275,3.2 315,6.0 384,12.2 412,14.9
  • vgc = -5.0
  • 250,0.3 290,1.5 336,3.9 367,5.9 398,8.3 425,10.5 454,13.0
  • vgc = -6.0
  • 300,0.2 330,1.2 375,3.22 412,5.55 453,8.22 495,11.3
  • vgc = -7.0
  • 338,0.3 371,1.3 425,3.7 459,5.6 495,7.7 527,9.8
  • vgc = -8.0
  • 362,0.3 391,0.8 421,1.8 462,3.5 506,5.7 557,8.6
  • vgc = -10.0
  • 409,0.5 444,1.3 477,2.2 507,3.3 532,4.1 557,5.0 598,6.7

    12at7data.txt

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