Bulk metal foil surface-mount resistors for military and aerospace

Vishay Intertechnology is now offering a variety of surface-mount resistors built on Bulk Metal Foil technology for military, avionics, and space applications. The release include the VSMP (0805 to 2512) series, VCS1625Z, and CSM2512S, offering features with wide range of specifications and configurations for optimized performance.

This new design technology offers the complete set of performance characteristics and factors need to be considered when choosing a resistor for space and military applications, including TCR (ambient temperature), PCR (self heating), load-life stability, end-of-life tolerance, thermal EMF, and ESD.

Features include:

1. Long-term load-life stability within a maximum of 0.05% for 2000 hours under full rated power at     +70°C.
2. The devices offer PCR ("ΔR due to self heating") to ±5 ppm at rated power; tight tolerances from      0.01%; and thermal EMF of < 0.1 µV/°C.
3. End-of-life tolerance target is 0.05% or less.
4. The resistors feature a non-inductive (< 0.08 µH), non-capacitive design and are available with     4Kelvin connections for low values, wraparound terminations, and flexible terminations (SMRXD     series)   to ensure minimal stress transference from the PCB due to a difference in thermal     coefficient of expansion.
5. Instantaneous thermal stabilization time, and a 1.0-ns rise time with effectively no ringing.
6. The devices offer a variety of screening options that are suitable for military and space applications     according to EEE-INST-002, DSCC, EPPL, and MIL-PRF 55342/55182/49465, and are built to handle     unconventional environmental conditions with minimal drift.
7. Bulk Metal resistors withstand electrostatic discharges to 25 kV, for increased reliability.
8. Within a resistance range from 2 m ohms, resistors are manufactured with any resistance value (e.g., 1     k ohms or 1.1234 k ohms)
9. The devices are radiation tested, and include short-time overload testing as part of the standard     production process.
10. Typical applications for the resistors include dc-to-dc converters, feedback circuits, and precision        amplifiers in test and measurement instrumentation, medical systems, satellites and aerospace        systems, commercial and military avionics, weapons systems, audio systems, and high        temperature systems including down-hole drilling.

Availability: Samples and production quantities of Bulk Metal resistors are available now, with lead times of 72 hours for samples, and six weeks for standard orders.