Now available in 0402 and 1206 case sizes, the PATT precision automotive thin film chip resistor family has been extended by Vishay Intertechnology. The devices are offered with gold-plated terminals for conventional solder assembly and conductive glueable board mount technologies, as well as high-temperature operation to +155°C with 100% power dissipation, derated linearly to +250°C.
This provides an 85°C extension in operating temperature range over most conventional chip resistors. The AEC-Q200 qualified device offers a low absolute TCR down to ±25 ppm/°C and laser-trimmed tolerances down to ±0.1%. The part features an intrinsic moisture-protected resistor element built on tantalum nitride technology.
With a load-life stability of less than 0.2% at +155°C and full rated power dissipation for 1,000 hours, the resistors are optimised for the low-noise analogue signal processing required to compensate for low offset and temperature drift in high-temperature environments such as gain setting in ultra-low noise and precision analogue digital processors and high-gain audio amplifiers; under-the-hood automotive applications; high-precision oil and gas exploration; industrial in-line testers; metering; and telecomms and industrial equipment.
Offered in 0402, 0603, 0805 and 1206 case sizes, the PATT family provides a wide resistance range from 1Ω to 1MΩ. The device features very low noise of less than -30dB, a low voltage coefficient of 0.1ppm/V, power dissipation ratings from 50 to 400mW, and 75 to 200V maximum working voltages.
The resistor features a high-purity ceramic substrate, 0.254μm gold terminations over nickel barrier for high-temperature HMP soldering or conductive gluing bonding and withstands ESD to 2kV per AEC-Q200 Class 1C. The device is moisture-resistant according to MIL-STD-202, method 106; flame-resistant according to AEC-Q200-001; sulphur-resistant per ASTM B809-95 humid vapour test; and 100% visually inspected per MIL-PRF-55342. The PATT resistors are halogen-free, RoHS-compliant and Vishay Green.
Samples and production quantities of the PATT resistor in the 0402 and 1206 case sizes are available now, with lead times of eight weeks.