New Ultra-High-Precision, High-Resolution Z-Foil Audio Resistor (VAR)

The Key Benefits:

• Special "naked Z-foil resistor" design, without molding or encapsulation, adds an additional dimension for reducing signal distortion and increasing clarity in signal processing
• Low typical TCR of ±0.2 ppm/°C from -55 °C to +125 °C, +25 °C ref.
• Excellent PCR ("ΔR due to self heating") of 5 ppm at rated power
• Absolute tolerance of 0.01 %
• Low current noise of < -40 dB.
• Low voltage coefficient of < 0.1 PPM per volt
• Resistance range of 10 Ω to 100 kΩ, with any value at any tolerance available through calibration
• Offers the utmost in ESD immunity, withstanding electrostatic discharges exceeding 25 kV, for increased reliability

The Key Applications:

• 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 News:

Vishay's New Ultra-High-Precision, High-Resolution Z-Foil Audio Resistor Features a Special Design Without Molding or Encapsulation to Reduce Signal Distortion and Increase Clarity in Signal Processing

Vishay Intertechnology, Inc. (NYSE: VSH) announces a new ultra-high-precision Z-Foil audio resistor that features a special design for increased clarity. The device provides a low typical TCR of ±0.2 ppm/°C from -55 °C to +125 °C, +25 °C ref., an excellent PCR ('ΔR due to self heating") of 5 ppm at rated power, an absolute tolerance of 0.01 %, and current noise of < -40 dB.

• Built on Vishay's Bulk Metal^® Z-foil technology, the device provides a combination of low noise and low inductance/capacitance, making it unrivalled for applications requiring distortion-free properties
• Offers a fast rise time of 1.0 ns without ringing
• Features a non-inductive (< 0.08 µH), non-hot-spot design
• Available with lead (Pb)-free or tin/lead alloy terminal finishes

Key Device Specifications:

• Typical TCR of ±0.2 ppm/°C from -55 °C to +125 °C, +25 °C ref.
• PCR ("ΔR due to self heating") of 5 ppm at rated power
• Absolute tolerance of 0.01 %
• Current noise of < -40 dB
• Load-life stability of ±0.01 % for 2000 hours at +70 °C
• Voltage coefficient of < 0.1 PPM per volt
• Thermal EMF of < 0.05 µV/°C
• Resistance range of 10 Ω to 100 kΩ
• Rise time of 1.0 ns
• ESD protection > 25 kV

The Perspective:

The new Vishay audio resistor (VAR), built on Vishay's Bulk Metal^® Z-foil technology, provides a combination of low noise and low inductance/capacitance, making it unrivalled for applications requiring distortion-free properties. Its special "naked Z-foil resistor" design, without molding or encapsulation, adds an additional dimension for reducing signal distortion and increasing clarity in signal processing.

Availability:

Samples and production quantities of the new VAR are available now, with lead times of 72 hours for samples, and three weeks for standard orders.

Worldwide Technical and Sales Contact:
foil@vishay.com

Product Sheet