Malvern, Pa. − Vishay Intertechnology, Inc. has launched 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 1,000 hours. The E/H (Ta2N) tantalum nitride thin-film resistors offer enhanced specifications for military and aerospace applications, including tolerances to 0.1 % and TCR of 25 ppm/°C.
The Vishay Dale QPL thin-film resistors target 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, said Vishay.
The E/H (Ta2N) thin-film resistors feature low noise of less than -25 dB and a low voltage coefficient of 0.5 ppm/V. Their wraparound terminations provides an 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, and working voltages from 30 V to 200 V. Resistance values range from 49.9 Ω to 3.3 MΩ, depending on tolerance.
Availability: Production quantities are available now, with lead times of eight to 10 weeks.