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AHRF200 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 16V 2A RADIAL. Review the specifications below when checking this part for your BOM.
The Littelfuse AHRF200-2 is a PolySwitch resettable polymer PTC fuse designed for overcurrent protection. It features a maximum operating voltage of 16V and a hold current (Ih) of 2A. The device trips at 3.8A with a maximum trip time of 4.8 seconds. Initial resistance is typically 39 mOhms, rising to a maximum of 110 mOhms after tripping. It supports a maximum fault current of 100A and operates within a temperature range of -40°C to 125°C. The component utilizes radial, disc-style through-hole packaging.
Verify the specific suffix when ordering, as the base model AHRF200 may refer to the series or require the full designation AHRF200-2 for the 2A variant. Confirm package availability in tape and reel or cut tape formats based on production needs. Ensure compliance with RoHS3 and REACH requirements for the target market. Cross-reference part numbers such as RF3332-000 if alternative sourcing is considered.
Select this component for circuits requiring resettable protection at 16V and 2A. Ensure the expected operating current remains below the 2A hold current to prevent nuisance tripping. Verify that the peak transient currents do not exceed the 100A maximum fault rating. Consider the thermal environment, as performance is rated up to 125°C ambient temperature.
This device belongs to the PolySwitch AHRF series from Littelfuse, specialized for automotive and industrial circuit protection. It serves as a solid-state alternative to traditional fuses, eliminating the need for replacement after a fault event. The radial leaded form factor facilitates easy integration into printed circuit boards and wire harness assemblies.
RF3332-000 is an officially documented substitute part number for the AHRF200-2.
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