The New Secondary Standard Resistor released by VPG

Published:2011/8/31 3:28:00 Author:Li xiao na From:SeekIC

A breakthrough secondary standard resistor is introduced by Vishay Foil Resistors division (VFR), which is can be applied for laboratory calibration standards and digital multimeters (DMM). VFR is belonging to the Vishay Precision Group (VPG). For test equipment designers, the new FSR provides exceptionally high accuracy of 10 ppm at the terminals, long term stability of ±0.0005 % (5 ppm) at +25 °C for one year, temperature coefficient of resistance (TCR) to ±0.3 ppm/°C from +15 °C to +45 °C.

The FSR provides a direct plug-in device for most DMMs, and it is based on a new design utilizing Bulk Metal Foil technology, resulting in a combination of standard features with new benchmark capabilities for accuracy, stability, and speed. The product applies the VFR precision resistors to replace the inductive resistors. When the frequency range reaches to 10 times, the FSR allows for controllable accuracy at the box terminals through calibration.

The device introduced here is adjustable, direct reading resistance and serves as a substitution component for RTD, bridges, attenuators, voltage dividers, multipliers, adjustable feedback resistors for use with operational amplifiers, and network ladder elements. What is more, the range of usefulness for these instruments is extended due to its high-frequency performance; therefore, the device becomes ideal in inspection stations, in the standards laboratory, and for component evaluation.

Combined with the Bulk Metal Foil resistors’ performance parameters, the FSR provides a level of accuracy, stability, and versatility. The FSR offers virtually infinite resolution in resistance setting and readability. The device is available with up to six significant digits (e.g. 9.99962), and a wide resistance range from 1 Ω to 150 kΩ, with any resistance value within this range available at any tolerance with no additional cost or lead time effect. The rise time of the resistor can be 1.0ns.

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