Trimming potentiometers designed to meet the most demanding requirements

Vishay Foil Resistors' 1240 / 1260 Series Accutrim trimming potentiometers are now available from Digi-Key. The Bulk Metal foil ultra-high-precision Accutrim trimming potentiometers designed to meet and exceed the requirements of MIL-PRF-39035 Char. H. The approved 1/4-inch square RJ26-style 1240 series and 3/8-inch square RJ24-style 1260 series devices offer low end-to-end TCR of ±10ppm/C from -55C to 150C (25C reference) and ±25ppm/C through the wiper. They also offer load life stability of 0.1% typical under full rated power at 85C for 10,000 hours and a < 0.05% typical settability. The ultra-high-precision trimmers feature a Bulk Metal foil resistive element with inherent temperature and load life stability. Their advanced, virtually backlash-free (< 0.05%) adjustment mechanism makes them easy to set quickly and accurately, and maintain that setting through temperature cycling and vibration, as well as thermal and mechanical shock eliminating the need for unwanted adjustments.