Thin film chip resistors deliver up to 6W in small sizes
Vishay Intertechnology has introduced a series of high-power, surface-mount, precision non-magnetic thin film chip resistors. The PCNM series offers power ratings of 2 and 6W in compact 1206 and 2512 case sizes, respectively. These high power ratings make the devices suited for use in power supplies for telecomms, medical and military equipment and instrumentation.
The resistors’ non-magnetic properties eliminate the effects of stray magnetic fields on circuit performance in X-ray and MRI machines while correcting passive intermodulation issues in cell phone base stations and amplifiers.
The resistors are built on aluminium nitride substrates featuring enlarged backside terminations to reduce the thermal resistance between the topside resistor layer and the solder joint on the end user's circuit assembly. This enables the devices to provide four times the power-handling capability of previous-gen non-magnetic resistors.
PCNM series devices combine their high power ratings with a low TCR down to ±25 ppm/°C and laser-trimmed tolerances to ±0.1% over a wide temperature range from -55 to +155°C. The resistors are offered with a wide range of resistance values from 2Ω to 30.1kΩ and provide low noise under -30dB, low voltage coefficients under 0.1ppm/V and voltage ratings from 75 to 200V.
Flame-resistant in accordance with UL 94 V-0, the devices are available with lead (Pb)-bearing and lead (Pb)-free, RoHS-compliant terminations.
Samples and production quantities of the PCNM series are available now, with lead times of 8-10 weeks for large orders.
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