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Thick film resistor boasts 1100W power rating

Posted: 16 Apr 2012     Print Version  Bookmark and Share

Keywords:thick film  resistor  inductive 

Vishay Intertechnology Inc. debuts the LPS1100, a power thick film resistor that claims to be the industry's first resistor in the compact 57mm x 60mm package to offer a power rating of 1100W at a heat sink temperature of +25°C.

 LPS1100

The LPS1100 thick film resistor is non-inductive (less than 0.1µH) and provides a resistance range from 1Ω to 1.3kΩ.

The LPS1100 offers high-temperature derating performance and a broad range of resistance values.

The LPS1100 thick film resistor is non-inductive (less than 0.1µH) and provides a resistance range from 1Ω to 1.3kΩ. Designed for easy mounting to a heat sink, the device's compact footprint, low 25mm profile, and low weight of 79g are said to save valuable space to help designers reduce the size of their end products.

With its high power capabilities and high dielectric strength to 12kV RMS, the LPS1100 is intended for power supply, inverter, converter, HEV-EV battery management, and snubber, chopper, pre-charge, discharge, filtering, and crowbar resistor applications. Typical end products will include windmill turbines, X-ray and oncology tables, trains, and large UPS drives, noted the company.

Thermal resistance for the LPS1100 resistor at rated power and +25°C is 0.039°C/W junction-to-case. The device features a temperature coefficient of 150ppm/°C, tolerances from 1 to 10 per cent, and an operating temperature from -55°C to +200°C. The resistor is compliant to RoHS Directive 2011/65/EU.

Samples and production quantities of the LPS1100 are available now, with lead times of eight to 10 weeks for larger orders.





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