Passives
Ultra-High-Precision High-Resolution Z-Foil Audio Resistor from Vishay
Vishay Intertechnology has announced an ultra-high-precision Z-Foil audio resistor that features a special design for increased clarity. The device provides a low typical TCR of ±0.2ppm/°C from -55°C to +125°C, +25°C ref., an excellent PCR (ΔR due to self heating) of 5ppm at rated power, an absolute tolerance of 0.01%, and current noise of <-40dB.
The new device is optimized for differential amplifiers, power supplies, and as feedback, loading, and gain resistors in high-precision amplifiers, high-end speaker systems and audio circuits, transducers, and high-fidelity audio amplifiers.
The VAR has a load-life stability of ±0.01% for 2000 hours at +70°C; a low voltage coefficient of <0.1PPM per volt; a thermal EMF of <0.05μV/°C, and a resistance range of 10Ω to 100kΩ, with any value at any tolerance available through calibration. It offers a fast rise time of 1.0ns without ringing and features a non-inductive (<0.08μH), non-hot-spot design. The resistor offers the utmost in ESD immunity, withstanding electrostatic discharges exceeding 25kV, for increased reliability. The resistor is available with lead (Pb)-free or tin/lead alloy terminal finishes.