On June 20, Vishay announced a new series of QPL MIL-PRF-55342-qualified surface-mount chip resistors that provides established reliability with an "R" level failure rate of 0.01 % per 1000 hours. Built using a moisture-resistant tantalum nitride resistive film technology, the new E/H (Ta2N) resistors offer enhanced specifications for military and aerospace applications, involving tolerances to 0.1 % and TCR of 25 ppm/°C.
The Vishay Dale Thin Film QPL resistors released on June 20 are specially designed for the use in control systems for military and aerospace applications where moisture during operation or long-term storage may be a concern. The devices' tantalum nitride resistive film assures a moisture resistance level that exceeds MIL-PRF-55342 limits by a factor of 50.
The E/H (Ta2N) thin film resistors offer very low noise of less than -25 dB and a low voltage coefficient of 0.5 ppm/V. Their wraparound terminations feature a tenacious adhesion layer covered with an electroplated nickel barrier layer for +150 °C operating conditions, while contributing resistance of less than 0.010 Ω typical.
The devices are available in 12 case sizes from M55342/01 to M55342/12, with power ratings from 50 mW to 1000 mW, working voltages from 30 V to 200 V, and resistance ranges from 49.9 Ω to 3.3 MΩ, which are up to the tolerance.
