Fixed resistor manufacturers face continued demand for extended operating temperature ranges and AEC-Q200 qualified parts for automotive and industrial applications that need high stability in harsh environments. At the same time, a continuing trend towards miniaturization poses an additional challenge as manufacturers try to pack more performance in smaller package sizes.

Also, over the past several years, there has been a greater need for anti-sulfur resistors. Sulfur contamination was primarily an issue for the automotive industry but it has become a more widespread challenge in other application areas. Sulfur contamination impacts the reliability of resistors in high-sulfur content environments, which can cause product failures.

Microhm Electronics offers a family of thick-film resistors that are designed to operate in harsh environments with a higher level of sulfur contamination. The Model NBS series chip resistor is manufactured using a thick-film element printed on a ceramic substrate and tested, which tests for the porosity of metallic coatings exposed to humid sulfur vapor.


Model NBS series  can be used in a range of applications, from general purpose to industrial (industrial motor controls, pump controls, and welding equipment) and outdoor and on-road applications (lighting and traffic control).

The AEC-Q200 compliant resistors are available in eight different footprints from 0402  to 2512  case sizes with rated power from 0.1 watt to 2 watts. The resistance values range from 1 ohm to 10 Mohms. The operating temperature range is -55°C to 125/155°C.