16R135BPR

Ptc Resettable Fuses Overview

The Littelfuse 16R135BPR is a radial leaded PolySwitch resettable PTC fuse designed for overcurrent protection. It features a maximum voltage rating of 16 VDC and a hold current of 1.35 A. The device trips at 2.7 A and withstands a maximum fault current of 40 A. Initial resistance is typically 40 mOhms, rising to a maximum of 120 mOhms after tripping. Power dissipation is rated at 900 mW. Operating temperatures range from -40°C to +85°C. Dimensions are 8.9 mm wide by 15.2 mm long with a 5.1 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault conditions clear without manual replacement
• Increases internal resistance significantly when heated by excessive current to limit flow
• Offers dual safety certifications including UL and TUV for international compliance

Ptc Resettable Fuses Applications

• Protection of USB ports and peripheral connections
• Overcurrent safeguarding in telecommunications equipment
• Circuit protection for automotive electronics and wiring harnesses

Ptc Resettable Fuses Procurement Notes

Verify component status as the 16R135BPR is officially discontinued and no longer manufactured. Confirm availability of parameter-equivalent alternatives such as the RUSBF135 series or Eaton PTR016V0135 series before finalizing design specifications. Ensure that any substitute part maintains identical electrical ratings and physical footprint requirements for your specific application constraints.

Ptc Resettable Fuses Selection Notes

Select this component for applications requiring low-profile radial mounting with precise 1.35 A hold current characteristics. Consider the 120 mOhms maximum trip resistance for voltage drop calculations in sensitive circuits. Verify that the 16 VDC rating aligns with system operating voltages. Evaluate thermal management needs given the 900 mW power dissipation rating during normal operation.

Ptc Resettable Fuses Part Context

This device belongs to the POLY-FUSE USBR series, specifically engineered for universal serial bus and similar low-voltage data line protection. The radial leaded form factor facilitates through-hole PCB assembly. It serves as a solid-state alternative to traditional fusible links, offering reusable protection against short circuits and overloads in consumer electronics and industrial control systems.

Ptc Resettable Fuses Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the Littelfuse RUSBF135, RUSBF135-2, and RUSBF135-AP. Direct functional equivalents from other manufacturers include the Eaton PTR016V0135 series. Verify pin compatibility and thermal performance when transitioning between these specific part numbers.