The document introduces a high-precision foil resistor with a TCR of ±2.0 ppm/°C, a tolerance of ±0.005%, and a load life stability of ±0.005%. The product, based on Vishay's Bulk Metal® Foil technology, offers low TCR, excellent load life stability, tight tolerance, fast response time, low current noise, low thermal EMF, and low voltage coefficient, all in one resistor.
The S Series foil resistors from Vishay use Bulk Metal® Foil (BMF) technology to deliver ultra‑low temperature coefficient, tight tolerance and excellent load‑life stability. The series offers resistance values from 0.5 Ω to 1 MΩ with options for lead‑free or tin/lead alloy terminations.
Key features include TCR as low as +1 ppm/°C, rise time of 1 ns, low inductance, and high‑frequency performance. Detailed model tables provide resistance ranges, power ratings, and packaging options, while environmental test data confirm reliability under thermal shock, overload and humidity conditions.
| Temperature Coefficient of Resistance (TCR) | +1 ppm/°C typical for $102K series, +2 ppm/°C typical for $102C series |
|---|---|
| Tolerance | +0.005 % (50 ppm) |
| Rated Power | up to 1 W at +125 °C |
| Resistance Range | 0.5 Ω to 1 MΩ (custom values available) |
| Current Noise | 0.010 pV (RMS)/V of applied voltage (‑40 dB) |
| Thermal EMF | 0.05 µV/°C typical |
| Voltage Coefficient | < 0.1 ppm/V |
| Inductance | < 0.08 µH typical |
| Rise Time | 1 ns |
| Load Life Stability (2000 h at 70 °C) | +0.005 % |
The $102C series typically has a temperature coefficient of resistance of +2 ppm/°C.
Load‑life stability is specified as +0.005 % after 2000 hours at 70 °C.
The S Series offers resistance values from 0.5 Ω to 1 MΩ, with custom values also available.