Vishay Intertechnology announced that it has extended the power rating of PTN series precision surface-mount thin film chip resistors in the 2512 case size to 2 W. Built using a self-passivated, moisture-resistant tantalum nitride resistive film technology, the Vishay Dale Thin Film devices combine their high power rating with a low absolute TCR of ± 25 ppm/°C and laser-trimmed tolerances down to ± 0.1 % over a wide temperature range of -55 °C to +125 °C.
The tantalum nitride resistive film of the PTN resistor assures a moisture-resistance level that exceeds MIL-PRF-55342 limits. This makes the devices ideal for use in low-noise, high-precision control systems for military, aerospace, telecommunications, and industrial applications where moisture during operation or long-term storage may be a concern.
The PTN series is offered in 13 case sizes from 0402 to 2512 and provides a wide range of resistance values from 10 Ω to 3 MΩ , with non-standard values available. Featuring a high-purity ceramic substrate, the devices' wraparound terminations offer an adhesion layer covered with a nickel barrier and solder coating, and contribute resistance of < 10 mΩ . Epoxy-bondable and lead terminations are also available upon request.
In addition to power ratings from 50 mW to 2 W, the PTN series offers low noise of < -25 dB, low voltage coefficients of 0.1 ppm/V, and voltage ratings from 75 V to 200 V. The lead (Pb)-free devices are halogen-free, RoHS-compliant without exemptions, and conform to Vishay Green standards. The resistors are 100% visually inspected per MIL-PRF-55342 and sulfur-resistant according to the ASTM B809-95 humid vapor test.
