INTRODUCTION

Vishay Foil precision trimmers have the Bulk Metal® Foil resistive element which possesses a unique inherent temperature and load life stability. Plus, their advanced virtually back lash-free adjustment mechanism makes them easy to set quickly and accurately and keeps the setting exactly on target.

FEATURES

• Temperature coefficient of resistance (TCR): (- 55 °C to + 125 °C ref. at + 25 °C)

   - ± 15 ppm/°C (model 1280G);

   - ± 5 ppm/°C (model 1285G)3);

   - through the wiper ± 50 ppm/°C

• A smooth and unidirectional resistance with leadscrew adjustment

• Load life stability: 0.5 maximum ΔR under full rated power at + 25 °C for 2000 h

• Electrostatic discharge (ESD) up to 25 000 V

• Settability: 0.05 typical; 0.1 maximum

• Setting stability: 0.1 typical; 0.5 maximum, ΔSS

• Power rating: 0.75 W at + 25 °C

• Resistance range: 10 Ω to 20 kΩ

• Resistance tolerance: ± 10 , ± 5

• Backlash: < 0.05

• Tap test: 0.05 typical; 0.1 maximum

• “O”-ring prevents ingress of fluids during any board cleaning operation

• Terminal finish: gold plated (tin/lead finish available on request)