Bourns Extended Range Of MF-RG Fuses

Extended range of MF-RG PPTC resettable fuses

Bourns’ Multifuse Product Line is pleased to announce the introduction of a series of new part numbers to the already successful MF-RG product family of radial through-hole Polymer Positive Temperature Coefficient (PPTC) Resettable Fuses. The Model MF-RG product family offers circuit protection solutions for applications in the automotive, data server, and industrial electronics industries. The additional eight new models will now extend the maximum operating current of the MF-RG series from 3 A to 11 A.

The Model MF-RG products are rated to a maximum operating voltage (Vrms) of 16 V and exhibit a highcurrent carrying capability. The key feature of the MF-RG family is the reduced size of the products compared to the existing through-hole products (MF-R, MF-RX) in the Multifuse® Polymer PTC product portfolio. The smaller size offers a space-saving advantage. In addition, the smaller size reduces the thermal mass of the products, resulting in a faster circuit protection solution. A second feature is the product family’s tighter hold to trip ratio. This enables design engineers to use a device that operates much closer to the fault current of the application, thereby further enhancing the speed of response to an overcurrent event.

Bourns Extended range of MF-RG PPTC resettable fuses Avnet Abacus


Features Applications
  • Compliant with AEC-Q200 Rev-C-Stress Test Qualification for Passive Components in Automotive Applications
  • Radial leaded devices
  • Smaller size for similar ihold rating
  • Faster tripping
  • RoHS compliant* and halogen free**

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.

  • Automotive applications
  • Where space is limited and fast tripping is required
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