Murata Develops Tighter Tolerance High Voltage Resistors

Murata Electronics North America introduced the MHR03xx series of high voltage resistors that are available with tighter tolerances than previous versions. The narrower tolerance parts are the result of Murata’s advanced laser trimming technology and can help reduce costs by replacing more expensive variable resistors in certain types of designs. The new resistors in the 1 to 100MΩ range provide +/-0.5% tolerances and parts up to 500MΩ can be produced with tolerances of +/-1%. These advanced resistors are well suited for use in a variety of electronics, such as office equipment, air conditioning systems, household and beauty appliances, automotive electronics including diesel particulate filters, and health care applications such as diagnostic equipment, including MRI and x-ray machines.

"Murata has been producing high voltage resistors for more than 35 years and is the market leader in this technology," said Peter Tiller, Senior Group Product Manager, Murata Electronics North America. "Our resisters provide unparalleled performance, cost savings and can be used in many power supply and high voltage applications."

The smallest part in the MHR03xx series is the MHR0307SA, available in 1 to 500MΩ versions with operating voltage up to 3.0kVdc and rated power of 0.3W. The MHR0307SA measures 7.6 x 5.0 x 2.5mm with a lead pitch of 5.08mm. At the other end of the range, the MHR0319SA measures 20.2 x 5.0 x 2.5mm with a lead pitch of 17.78mm. These resistors can operate up to 14.0kVdc with rated power of 1.0W and are available up to 1000MΩ.

Sample pricing of Murata’s MHR03xx resistor series is $0.48 in small quantities and the lead-time is five weeks.