Three thick film resistors expand Bourns high power rated model series

Three high power rated thick film resistor model series have been announced by Bourns. The Models CMP/CMP-A are anti-surge devices that feature a wide resistance range from 1.0 Ohm to 1.0 MOhm and high rated power up to 1.5W. Supporting even higher power designs, the third addition is the Bourns Model CHP-A resistor series, which delivers triple-rated power. One model provides 3W of rated power at 70 degrees C, which is one of the highest rated resistor power offerings in the industry, claims Bourns.

Models CMP-A and CHP-A are AEC-Q200-compliant and sulphur-resistant. They meet, says Bourns, the growing need for more ruggedised components that can operate reliably in certain harsh environments.

Bourns Model CMP is the enhanced performance version of the Bourns CRM resistor series. It has a higher power rating, higher working voltage, and higher pulse power handling capabilities. The CMP series is also available in a smaller 0603 form factor that meets today’s integrated, space-constrained design requirements.

The resistance range, high rated power and superior pulse load features of the CHP-A and CMP/CMP-A series resistors make them suitable for current sensing in a variety of applications such as consumer electronics, industrial automation, power supplies, LED lighting and communication base stations.

Bourns offers these resistor families in four different footprints from the small 0603 (1608 Metric) form factor to the 2512 (6431 Metric) form factor.

The fixed resistors have been designed to operate in certain harsh environments with higher levels of sulphur contamination. They are manufactured using a thick film element printed onto a ceramic substrate, and tested in accordance with ASTM B809-95 methods which analyse the porosity of metallic coatings exposed to humid sulphur vapour.

The Model CHP-A and Models CMP/CMP-A thick film resistor families are available now. The three model series are also RoHS-compliant and halogen free.

Bourns manufactures position and speed sensors, circuit protection products, magnetic components, microelectronic modules, panel controls and resistive products. Headquartered in Riverside, California, USA, Bourns serves a broad range of markets, including automotive, industrial, consumer, communications, medical (low/medium risk) and audio.

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