TRF600-150-R2-B-0.5

Ptc Resettable Fuses Overview

The Littelfuse TRF600-150-R2-B-0.5 is a PolySwitch resettable PTC fuse designed for overcurrent protection in through-hole applications. It features a maximum holding current (Ih) of 150 mA and a trip current (It) of 300 mA. The device supports a maximum voltage of 250 VAC or 600 VDC, with a maximum fault current rating of 3 A. Initial resistance is typically 6 Ohms, rising to a maximum of 17 Ohms after tripping. Operating temperature ranges from -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery by increasing resistance upon overheating due to overcurrent conditions
• Offers reliable solid-state protection without requiring manual replacement after fault clearance
• Designed for radial leaded through-hole mounting to facilitate standard PCB assembly processes

Ptc Resettable Fuses Applications

• Consumer electronics power supply circuits
• Building and home automation systems
• Telecommunications equipment input protection
• Peripheral interface ports on computing devices

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure correct packaging and lead form. Confirm that the radial lead spacing matches the target PCB footprint design requirements prior to ordering. Check RoHS compliance status for the specific manufacturing batch if environmental regulations apply to the end product assembly line.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable protection mechanism is required for low-current DC or AC lines. Ensure the operating current remains below the 150 mA holding threshold under normal conditions. Verify that the expected fault current does not exceed the 3 A maximum rating to prevent device damage. Consider thermal derating factors if the ambient temperature approaches the upper operational limit.

Ptc Resettable Fuses Part Context

This part belongs to the TRF600 series of PolySwitch resettable fuses from Littelfuse. The series is engineered for general-purpose circuit protection in compact electronic assemblies. The radial package style distinguishes it from surface-mount alternatives within the same electrical specification family.

Ptc Resettable Fuses Replacement Considerations

Compatible substitutes include other Radial Lead PTC fuses with matching 150 mA holding current and 250 V voltage ratings. Verify that alternative parts maintain similar initial resistance values and trip characteristics to ensure equivalent circuit protection performance.