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VAR

Built on VFR’s Bulk Metal® Z-Foil technology, the VAR provides a combination of low noise and low inductance/capacitance, making it unrivalled for audio applications

Features:

  • “Naked Z-Foil resistor” design without mold or encapsulation for reduced signal distortion
  • Temperature coefficient of resistance (TCR):
    • ±0.05 ppm/°C typical (0°C to +60°C, +25°C ref.)
    • ±0.2 ppm/°C typical (0°C to +125°C, +25°C ref.)
  • Power rating: to 0.4 W at +70°C
  • Resistance tolerance: to ±0.005%
  • Load life stability: to ±0.005% at +70°C, 2000 h at rated power
  • Non inductive, non-capacitive design
  • Rise time: 1 ns without ringing
  • Current noise: 0.010 μV RMS/V of applied voltage (<-40 dB)
  • Thermal EMF: 0.05 μV/°C
  • Voltage coefficient: <0.1 ppm/V
  • Inductance: <0.08 μH
  • Thermal stabilization time <1 s (nominal value achieved within 10 ppm of steady state value)
  • Electrostatic discharge (ESD) at least to 25 kV