1210L050/30WR

Ptc Resettable Fuses Overview

The Littelfuse 1210L050/30WR is a polymer PTC self-resetting fuse designed for surface mount applications in the 1210 (3225 metric) package. It features a maximum holding current of 500 mA and a maximum voltage rating of 30V. The device trips at a current of 1 A and can withstand a maximum fault current of 40 A. Initial resistance is typically 0.6 Ohms, rising to a maximum trip resistance of 5 Ohms. Operating temperature ranges from -40°C to 85°C.

Ptc Resettable Fuses Feature Summary

• Self-resetting polymer construction provides automatic circuit recovery after fault conditions clear.
• Low profile surface mount design facilitates automated assembly on printed circuit boards.
• RoHS compliant manufacturing ensures adherence to environmental restriction standards.

Ptc Resettable Fuses Applications

• Portable electronic devices requiring overcurrent protection
• Consumer electronics circuits
• Data port protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix WR against official Littelfuse documentation to confirm lead-free status and tape-and-reel packaging specifications. Confirm that the 1210L050/30WR designation matches the required 500mA holding current and 30V rating for your circuit design before finalizing orders.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable protection mechanism is preferred over disposable fuses. Ensure the operating current remains below the 500mA holding limit to prevent nuisance tripping. Verify that the peak pulse current capability of 40A exceeds any transient surges expected in the application environment.

Ptc Resettable Fuses Part Context

This part belongs to the POLY-FUSE 1210L series, which utilizes polymer technology for compact circuit protection. The series is characterized by low resistance and fast response times suitable for space-constrained surface mount designs. It serves as a reliable alternative to traditional fusible links in modern electronics.

Ptc Resettable Fuses Replacement Considerations

PTSLR12106V500 by Eaton - Electronics Division is listed as a similar replacement option.

Ptc Resettable Fuses FAQ

What is the maximum fault current this fuse can withstand?

The 1210L050/30WR can withstand a maximum fault current of 40 Amperes.

Does this component require manual replacement after a trip?

No, it is a self-resetting fuse that automatically returns to a low-resistance state once the fault condition is removed and the device cools down.