PHT Overview
PHT Vishay Sfernice High Stability - High Temperature (230 °C) Thin Film Wraparound Chip Resistors, Sulfur Resistant INTRODUCTION For applications such as down hole applications, the need for parts able to withstand very severe conditions (temperature as high as 215 °C powered or up to 230 °C un-powered) has leaded Vishay Sfernice to push out the limit of the thin film technology. Designers might read the...
PHT Key Features
- Operating temperature range: -55 °C; +215 °C
- Storage temperature: -55 °C; +230 °C
- Gold terminations (< 1 μm thick)
- Temperature coefficient down to 15 ppm (-55 °C; +215 °C)
- Tolerance down to 0.01 %
- Load life stability: 0.35 % max. after 2000 h at 220 °C (ambient) at Pn
- Shelf life stability: 0.7 % typ. (1 % max.) after 15 000 h at 230 °C
- SMD wraparound
- TCR remains constant after long term storage at 230 °C (15 000 h)
- Sulfur resistant (per ASTM B809-95 humid vapor test)
