Vishay's 2512 size resistors offer power rating to 2 W
The firm's thin film chips incorporate a moisture-resistant tantalum nitride film. They are designed for use in low-noise, high-precision control systems for military, aerospace, telecommunications, and industrial applications
Vishay Intertechnology has extended the power rating of its PTN series precision surface-mount thin film chip resistors in the 2512 case size to 2 W.
Tantalum nitride can create barrier or "glue" layers between copper, or other conductive metals, and dielectric insulator films such as thermal oxides. These films are deposited on top of silicon wafers during the manufacture of integrated circuits, to create thin film surface mount resistors and has other electronic applications.
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 percent over a 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 thirteen case sizes from 0402 to 2512 and provides a wide range of resistance values from 10 ohms to 3 mega ohms, 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 less than 10 milliohms. 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 less than -25 dB, low voltage coefficients of 0.1 ppm/V, and voltage ratings from 75 V to 200 V.
The lead-free devices are halogen-free, RoHS-compliant without exemptions, and conform to Vishay Green standards. The resistors are 100 percent visually inspected per MIL-PRF-55342 and sulphur-resistant according to the ASTM B809-95 humid vapour test.
Samples and production quantities of the enhanced PTN series devices in the 2512 case size are available now, with lead times of eight to ten weeks for large orders.
