AHEF1000

Ptc Resettable Fuses Overview

The Littelfuse AHEF1000 is a PolySwitch resettable PTC fuse designed for overcurrent protection in automotive and industrial circuits. It features a 32V maximum voltage rating and a 10A hold current (Ih). The device trips at 20A and withstands up to 100A fault current. Initial resistance is typically 6 mOhms, rising to a maximum of 16 mOhms after tripping. It operates between -40°C and 125°C, meets AEC-Q200 standards, and uses a radial leaded package with a 10.15mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for automotive wiring harnesses and PCB components
• Automotive-grade qualification ensures durability under harsh environmental conditions
• Solid-state polymer construction eliminates moving parts and arcing risks

Ptc Resettable Fuses Applications

• Protection of commercial and passenger vehicle actuators and small motors
• Safeguarding display screens and electronic control units
• Overcurrent protection for battery-powered subsystems

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix to confirm the exact packaging configuration, as standard delivery may vary by distributor. Confirm that the AEC-Q200 automotive grade requirement aligns with your system specifications. Ensure the radial lead form factor fits your board layout constraints before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when high current handling up to 10A is required in low-voltage automotive systems. The radial lead design facilitates through-hole mounting on printed circuit boards. Consider the trip time characteristics and maximum fault current rating to ensure adequate protection against short circuits without nuisance tripping during normal operation surges.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse AHEF series of PolySwitch resettable fuses. The series offers various current ratings within a compact radial package. These devices are engineered specifically for the demanding thermal and electrical environments found in modern automotive electronics and industrial power distribution networks.

Ptc Resettable Fuses Replacement Considerations

Consult the official Littelfuse AHEF Series datasheet for direct cross-reference part numbers. Verify that any substitute maintains the same 32V rating, 10A hold current, and AEC-Q200 automotive qualification to ensure functional equivalence in critical safety applications.