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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 clipboardSurface Mount - PolySwitch® Resettable PPTC Devices
Surface mount PolySwitch® resettable PPTC fuses solder onto printed circuit boards. The surface mount devices employ polymer positive temperature coefficient technology to protect electronic components and integrated circuits from inrushes of current. Since the SMD fuses only blow when massively overloaded, they rarely require replacement. The resettable fuses’ miniature and subminiature sizes make them ideal choices when space is limited, such as in mobile phones, portable medical devices, and USB peripherals. Littelfuse also offers AEC-Q200-qualified surface mount PPTC fuses for automotive applications.
- Available with a very wide range of operating voltage ratings, from 6 V dc to 250 V dc
- Maximum time to trip below 1 s
- Ultra-low to low hold current ratings (e.g., 5 mA, 600 mA, 3.1 A)
- Available with trip currents between 50 mA and 10 A
- Certified halogen-free and RoHS compliant
- Select devices available with radial leads
- Low-profile designs save space on boards and in electronics
- Compatible with high-volume PCB assembly processes
- Compatible with reflow soldering processes
Surface Mount - PolySwitch® Resettable PPTC Devices Parts
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