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Bourns MF-USML Series

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Bourns MF-USML PPTC resettable fuses

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Bourns MF-USML Series PPTC Resettable Fuses offer maximum operating current from 1.75A to 7.0A, resistance values as low as 13.5mΩ, and initial resistance values as low as 1mΩ.

Bourns’ low ohmic materials used in this product family have post trip resistance values as low as 13.5 mOhms and initial resistance values as low as 1 mOhm. Such low resistance values help boost the current carrying capability of these new devices. Bourns can now achieve a 7 A Ihold model in a 1210 package (MF-USML700-2).

The compact MF-USML models use Bourns' freeXpansion™ design that increases the performance of the resettable fuse with higher hold currents, higher voltages, improved resistance stability, and smaller footprints.

The primary applications for these products include PC motherboard port protection, USB memory modules, wearable devices and battery protection for smart phones. These devices have been designed to protect against both overcurrent and overtemperature events within these applications.

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Features/Applications

Table

Features	Applications
Surface mount packaging for automated assembly Small footprint size (1210) and low profile for space-constrained mobile applications Ultra-low resistance 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.}}	Thermal protection for Li-ion & polymer battery packs Game consoles PC motherboards USB port protection - USB 2.0, 3.0 & OTG Mobile phones Digital cameras

Features

Applications

Surface mount packaging for automated assembly
Small footprint size (1210) and low profile for space-constrained mobile applications
Ultra-low resistance
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.}}