AHRF650-2 Equivalent & Substitute Parts

Part Overview

The AHRF650-2 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 2318 units in stock. Alternative equivalent parts may be required for supply chain continuity, design flexibility, or specific application requirements.

Substiute Parts

AHRF650-2

LittelfuseIn Stock: 2365AHRF650-2 Datasheet

Current PartRFQ

AHRF650-2

LittelfuseIn Stock: 2365AHRF650-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AHRF650-2 is determined by strict equivalence across critical electrical and mechanical parameters. The following parameters define acceptable substitutes:

• Voltage rating of 16V maximum
• Hold current (Ih) of 6.5 A maximum
• Trip current (It) of 13.7 A
• Initial resistance (Ri) minimum of 9 mOhms
• Post-trip resistance (R1) maximum of 26 mOhms
• Operating temperature range of -40°C to 125°C
• Through-hole radial mounting configuration
• Lead spacing of 0.200" (5.08mm)
• ROHS3 compliance and AEC-Q200 rating

Only parts meeting all these specifications qualify as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

The AHRF650-2 is an Active product with full ROHS3 compliance and AEC-Q200 automotive qualification. Selection of equivalent parts should prioritize components with identical Active product status and matching compliance certifications. The AEC-Q200 rating indicates suitability for automotive applications with established reliability standards. ROHS3 compliance ensures regulatory alignment for restricted substance requirements.

Frequently Asked Questions (FAQ)

Q: What defines an acceptable substitute for the AHRF650-2?

A: An acceptable substitute must match all critical electrical parameters: 16V maximum voltage, 6.5 A hold current, 13.7 A trip current, 9 mOhms minimum initial resistance, and 26 mOhms maximum post-trip resistance. The substitute must also maintain identical mechanical specifications including through-hole radial mounting, 0.200" lead spacing, and -40°C to 125°C operating temperature range.

Q: Are there packaging alternatives for the AHRF650-2?

A: The AHRF650-2 is specified in Cut Tape (CT) packaging with radial disc configuration. Substitutes must maintain this through-hole radial package format to ensure mechanical and electrical compatibility with existing PCB designs.

Q: What compliance certifications are required for substitutes?

A: Substitute parts must maintain ROHS3 compliance and AEC-Q200 rating to ensure regulatory and automotive qualification equivalence with the original AHRF650-2 specification.

Q: Can the AHRF650-2 be used in applications outside automotive?

A: Yes. While AEC-Q200 rated for automotive use, the AHRF650-2 polymeric PTC resettable fuse is suitable for general industrial and consumer electronics applications requiring overcurrent protection with automatic reset capability within the specified voltage and current parameters.