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News
Bourns Further Expands its Multifuse® Line of High-Temperature Rated PPTC Overcurrent Protectors
2020-12-07 | Return
New 125 °C Rated Polymer PTC Products Meet Protection Requirements for Higher Current and Voltage Ratings and Low Thermal Derating Factors in a Small 0603 FootprintRIVERSIDE, Calif., December 7, 2020 - Bourns, Inc., a leading manufacturer and supplier of electronic components, today announced the expansion of its line of Multifuse® high-temperature rated surface mount Polymer Positive Temperature Coefficient (PPTC) resettable fuse products. The new Bourns® Multifuse® MF-FSHT model family is designed to provide effective overcurrent protection in applications with higher ambient operating temperatures while also reducing the risk of generating nuisance tripping at elevated temperatures between 85°C and 125°C. These capabilities are particularly useful in applications that regularly experience elevated ambient temperatures, including, but not limited to, industrial equipment, outdoor security systems and computing/storage devices.
The new Multifuse® MF-FSHT model family is available in a small EIA 0603 footprint, and further expands Bourns' leading line of high-temperature rated polymer PTCs that include the radial leaded MF-RHT model family and the surface mount MF-SMHT, MF-USHT, MF-NSHT and MF-PSHT model families.
"Our latest MF-FSHT series of surface mount polymer PTCs allows designers to more confidently specify robust overcurrent protection into their higher temperature applications where long-life operation is a must," said Lee Bourns, Product Line Manager for Overcurrent Protection at Bourns. "Furthermore, these new models also provide enhanced thermal derating performance at higher temperatures, thereby allowing designers to benefit from higher Ihold and Itrip current ratings at elevated temperatures while using one of the industry's smallest SMD footprints."
The new polymer PTC models are constructed using a proprietary blend of high-melting point polymer materials and carbon-based conductive fillers to achieve high-reliability overcurrent protection performance particularly tailored for high temperature environments. The proprietary conductive polymer formulation also provides an elevated level of resistance to commonly found oils, lubricants and solvents that can cause adverse effects in some industrial and transportation applications. In addition, these overcurrent protectors feature Ihold current ratings from 0.05 A to 0.16 A at the 12 V maximum rated voltage and a maximum operating temperature up to +125 °C.
The new Bourns® Multifuse® MF-FSHT Polymer PTC model family is available now, is RoHS compliant*, and is produced in a Bourns IATF 16949 certified facility.
For more detailed product information on Bourns' complete line of Multifuse® high-temperature rated PPTC overcurrent protectors, please see: www.bourns.com/products/circuit-protection/resettable-fuses-multifuse-pptc
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Source：http://www.bourns.com/