SMDH2920B185TF

Ptc Resettable Fuses Overview

The YAGEO SMDH2920B185TF is a polymeric self-resetting fuse (PPTC) designed for surface mount applications. It features a holding current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 33 VDC. The device operates within a temperature range of -40°C to +125°C and has a maximum fault current rating of 40 A. Packaged in a 2920 (7555 metric) case style, it offers low resistance characteristics suitable for high-temperature environments.

Ptc Resettable Fuses Feature Summary

• Complies with AEC-Q200 automotive qualification standards for reliability
• Provides automatic circuit protection through self-resetting functionality
• Engineered for high-temperature operation up to 125°C

Ptc Resettable Fuses Applications

• Automotive electronic circuits requiring AEC-Q200 compliance
• Overcurrent protection for portable devices
• Power supply input protection
• Peripheral interface circuit safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'TF' against the manufacturer's official datasheet to confirm tape and reel packaging specifications. Ensure that the 33VDC voltage rating aligns with the target circuit's maximum operating conditions. Confirm that the 1.85A holding current meets the system's normal operational load requirements without nuisance tripping during steady-state conditions.

Ptc Resettable Fuses Selection Notes

Select this component when an automotive-grade PPTC fuse is required for space-constrained designs due to its 2920 package size. Consider the 3.7A trip current threshold to ensure adequate margin above normal operating currents while providing timely protection against short circuits. Evaluate the thermal environment to ensure the 125°C maximum operating temperature suffices for the application's ambient conditions.

Ptc Resettable Fuses Part Context

This part belongs to the YAGEO SMDH series of resettable fuses, which are specifically engineered for high-reliability applications. The series emphasizes robust performance under harsh conditions, including high temperatures and mechanical stress. As a polymeric positive temperature coefficient device, it serves as a reusable alternative to traditional one-time fusible links in modern electronics.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 2920 footprint, 1.85A holding current, and 33V rating. Verify AEC-Q200 certification if automotive usage is mandated. Cross-reference trip times and residual voltage characteristics to ensure equivalent circuit behavior during fault events.