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E442 PHILIPS Tetrode, HF or MF amplifier Dimensions (mm) Heating indirect, AC or DC, parallel a g2 g1 m k f1 f2 Capacitances 116 x 47 Vf (V) If (A) 4 1 k,m f1 3 g2 1 5 a 6 4 g1 Base O g2 1 2 f2 f1 a 6 3 k,m 4 g1 Base A 2 f2 g1 5 a 6 3 g2 2 4 k,m 15 f1 Base N f2 Cag1 (pF) 0.005 FP 1999.08.09 1/2 E442 PHILIPS Typical characteristics Operating characteristics Limiting values Va (V) Ia (mA) Vg1 (V) Vg2 (V) Ig2 (mA) µ S (mA/V) Ri (kΩ) Vb (V) Ra (kΩ) Rg2 (kΩ) Rk (kΩ) Ia (mA) Ig2 (mA) Vg2 (V) Vk (V) Pa max (W) 200 1.5 -1.3 100 0.6 700 0.9 800 200 160 0.6 1.5 0.6 100 1.3 1 FP 1999.08.
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