1812L270SLPR

Ptc Resettable Fuses Overview

The Littelfuse 1812L270SLPR is a PolySwitch resettable PTC device from the Low Rho series, designed for surface mount applications. It features a maximum holding current of 2.7 A and a maximum trip current of 6.3 A. The component supports a maximum voltage of 6 VDC with an interrupting rating of 50 A. Its initial resistance is typically 34 mOhms. Operating within a temperature range of -40°C to +85°C, it utilizes a 1812 (4532 metric) package with dimensions of approximately 4.55 mm in length, 3.24 mm in width, and 0.70 mm in height.

Ptc Resettable Fuses Feature Summary

• Low on-resistance design minimizes power dissipation during normal operation
• Automatic reset functionality eliminates the need for manual fuse replacement after fault clearance
• RoHS compliant construction ensures environmental safety standards are met

Ptc Resettable Fuses Applications

• Portable electronic devices requiring overcurrent protection
• Battery packs and battery management systems
• Peripheral interface circuits such as USB ports
• Automotive electronics and infotainment systems

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix SLPR against official Littelfuse documentation to confirm tape and reel packaging specifications. Ensure that the voltage and current ratings align with the target circuit requirements before finalizing procurement orders. Cross-reference the manufacturer part number with authorized distributor databases to confirm authenticity and availability status.

Ptc Resettable Fuses Selection Notes

Select this component when low impedance is critical to maintain signal integrity or reduce heat generation in compact designs. Evaluate the thermal environment to ensure the holding current remains effective at the maximum operating temperature. Confirm that the physical footprint fits within the available PCB space constraints for the 1812 package size.

Ptc Resettable Fuses Part Context

This device belongs to the PolySwitch Low Rho family, which emphasizes reduced resistance compared to standard PPTC fuses. The 1812L series represents a common form factor for surface mount circuit protection. The SLPR designation indicates specific packaging and handling characteristics defined by the manufacturer for automated assembly processes.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Generic PPTC replacements may not match the precise resistance or tripping characteristics required for sensitive circuitry.