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Circuit Protection Selection Guide
Consult this guide to learn about circuit protection considerations and the solutions Littelfuse offers. Tables help match products with applications.
Link has been copied to clipboardLow Resistance
Low Rho Surface Mount PPTC resettable fuses offer the same overcurrent protection as larger PolySwitch® polymeric positive temperature coefficient devices. They also delivers the benefits of ultra-low internal resistance and ultra-low voltage drop while requiring much less printed circuit board space. Small enough to fit in data cable connectors, Low Rho Surface Mount PPTC resettable fuses also protect circuits in rechargeable Li-ion batteries, mobile phones, digital cameras, and LCD and LED displays.
- Available with a wide range of ampere ratings, from 100 mA to 9 A
- Fast-acting performance
- Ultra-low internal resistance
- Ultra-low voltage drop
- Maximum fault current of 50 A
- UL Recognized and TUV-approved
- Certified lead-free, halogen-free, and RoHS compliant
- Miniature size and thin profile save space on PCBs
- Small enough to fit in USB ports and data cable connectors
- Perform as well as large PPTC resettable fuses
- Compatible with high temperature solders and high-volume PCB production
Low Resistance Parts
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