TRF600-150-B-0.5

Ptc Resettable Fuses Overview

The Littelfuse TRF600-150-B-0.5 is a PolySwitch resettable PTC fuse designed for circuit protection. It features a maximum voltage rating of 250 VDC with an internal rating of 600 VDC. The device maintains a hold current (Ih) of 150 mA and trips at a current of 300 mA. Its initial resistance (Ri) is a minimum of 6 Ohms, while the post-trip resistance (R1) has a maximum value of 17 Ohms. The component supports a maximum fault current of 3 A and operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by increasing resistance when heated during fault conditions.
• Offers automatic reset functionality after the fault condition is removed and the device cools down.
• Features radial leaded construction suitable for through-hole PCB mounting.

Ptc Resettable Fuses Applications

• Building and home automation circuits
• Telecom equipment protection
• Power supply input protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix B-0.5 against official Littelfuse documentation to confirm coating material and packaging details. Ensure the required hold current and trip characteristics match the design specifications. Confirm RoHS compliance status and agency approvals such as UL, CSA, and TUV are valid for the target market. Check for any recent product change notices regarding epoxy sources or shipping charges that may affect procurement logistics.

Ptc Resettable Fuses Selection Notes

Select this component when a radial leaded PTC fuse is required for low-current DC applications. The 150 mA hold current suits sensitive control circuits. Verify that the 250 VDC rating aligns with the system voltage. Consider the 17 Ohm maximum post-trip resistance impact on circuit operation. Ensure the physical dimensions fit the available PCB space.

Ptc Resettable Fuses Part Context

This part belongs to the TRF600 series of PolySwitch resettable fuses. The series is engineered for compact circuit protection in consumer electronics and industrial applications. It serves as a solid-state alternative to traditional fusible links, offering reusable protection against overcurrent events without requiring manual replacement.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other TRF600 series variants with matching electrical ratings. Verify compatibility with equivalent parts from other manufacturers only if datasheet parameters align precisely. No specific public substitute part numbers are confirmed in the provided source data.