AHRF600-2 Equivalent & Substitute Parts

Part Overview

The AHRF600-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse, part of the PolySwitch® AHRF series. This component provides overcurrent protection with automatic reset capability in through-hole radial configuration. The part is currently Active in product status with 2938 units in stock. Alternative equivalent parts are identified to support procurement flexibility and supply chain continuity.

Substiute Parts

AHRF600-2

LittelfuseIn Stock: 3033AHRF600-2 Datasheet

Current PartRFQ

AHRF600-2

LittelfuseIn Stock: 3033AHRF600-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AHRF600-2 is determined by strict equivalence across the following critical parameters:

Voltage rating (16V maximum), current hold specification (6 A maximum), current trip threshold (12 A), maximum current capacity (100 A), time to trip (6.5 s), initial resistance (10 mOhms minimum), post-trip resistance (32 mOhms maximum), operating temperature range (-40°C to 125°C), through-hole mounting configuration, radial disc package type, and physical dimensions (0.441" L x 0.118" W with 0.200" lead spacing).

Compliance certifications including AEC-Q200 rating, ROHS3 compliance, and REACH unaffected status must be maintained. Only parts meeting all specified parameters qualify as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

The AHRF600-2 maintains Active product status with full AEC-Q200 automotive qualification and ROHS3 compliance. Selection of equivalent parts requires confirmation of identical electrical characteristics, thermal performance specifications, and compliance certifications. Physical package compatibility with PCB layout and lead spacing requirements must be verified for through-hole assembly applications.

Frequently Asked Questions (FAQ)

What parameters must match for a part to be considered equivalent to the AHRF600-2?

Equivalent parts must match all electrical specifications: 16V maximum voltage, 6 A hold current, 12 A trip current, 100 A maximum current, and 6.5 s trip time. Resistance values (10 mOhms initial minimum, 32 mOhms post-trip maximum), operating temperature range (-40°C to 125°C), and physical dimensions (0.441" L x 0.118" W, 0.200" lead spacing) must be identical. Compliance ratings including AEC-Q200 and ROHS3 status must be maintained.

Can the AHRF600-2 be used in applications requiring different voltage ratings?

No. The AHRF600-2 is rated for 16V maximum. Applications requiring different voltage ratings require selection of alternative part numbers with appropriate voltage specifications.

What is the significance of the radial disc package configuration?

The radial disc package with 0.200" lead spacing is a mechanical and electrical specification that determines PCB footprint compatibility and through-hole assembly requirements. Substitutes must maintain identical package geometry and lead spacing for direct board-level compatibility.

Are there compliance considerations when selecting substitute parts?

Yes. The AHRF600-2 carries AEC-Q200 automotive qualification and ROHS3 compliance. Substitute parts must maintain these certifications to ensure compatibility with regulated applications and supply chain requirements.