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Thin-film resistor ensures high accuracy at low TCR

Posted: 08 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:thin-film resistor? TCR? thick-film resistor?

Stackpole Electronics is offering the RNCP series thin-film chip resistors as a high-power, low-cost alternative to thick film resistive technology, ensuring high accuracy with a low temperature coefficient of resistance (TCR).

Featuring absolute tolerances to 1 percent and a TCR of 100ppm/C, the RNCP series resistors are available in 0402, 0603, 0805 and 1206 chip sizes, with power ratings from 0.1W to 0.5W and maximum working voltages from 50V to 200V.

According to Stackpole, the RNCP series offers twice the power rating compared to standard thick-film technology. It features high tolerance to harsh environments, including shock, vibration and temperature extremes. The RNCP series does not use lead-containing glass making the part 100 percent Pb-free.

Stackpole has eliminated silver from the terminations, making the part impervious to sulfur while avoiding the use of expensive metals like gold. This reduces the cost of the resistor to be within 10 percent of a traditional standard thick-film chip and significantly reduces noise and interrupted power.

Intended for harsh environments and systems that require long-term reliability, such as industrial and off-highway applications, the RNCP series offer all of the advantages of thin-film technology, including high stability, low noise and high operating temperatures.

Pricing for the RNCP series varies with chip size, tolerance, and resistance value and ranges from around $1 to $10 per thousand in full reel quantities. The thin-film resistors are available now on standard 7-inch reels.

- Ismini Scouras

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