QPL Tantalum Nitride Thin Film Chip Resistors for Military and Aerospace Applications

Jan. 16, 2013
Vishay Intertechnology, Inc. launched a new surface-mount chip resistor with a QPL MIL-PRF-55342 listing and an established reliability "M" failure rate of 100 ppm.

Vishay Intertechnology, Inc. launched a new surface-mount chip resistor with a QPL MIL-PRF-55342 listing and an established reliability "M" failure rate of 100 ppm. Built using a moisture-resistant tantalum nitride resistive film technology, the new E/H (Ta2N) QPL resistors offer enhanced specifications for military and aerospace applications, including tolerances to 0.1 % and a TCR of 25 ppm/°C.

The E/H (Ta2N) QPL resistors are intended for 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) MIL-PRF-55342 thin film resistors feature 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 and contribute resistance of less than 0.010 ohms typical.

The new resistors are offered in M55342 case sizes from 01 to 12, with power ratings from 50 mW to 1000 mW, working voltages from 40 V to 200 V, and resistance ranges from 49.9 ohms to 3.3 megohms depending on tolerance.

Production quantities of the E/H (Ta2N) MIL-PRF-55342 thin film resistors are available now, with lead times of 8 to 10 weeks. Pricing for U.S. delivery is $0.45 to $2.00 and depends on case size and tolerance.

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