AGRF500 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The AGRF500 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 16V maximum voltage and 5A hold current. This component is designed for overcurrent protection in electronic circuits through a self-resetting mechanism. The part is currently active in production with AEC-Q200 ratings and ROHS3 compliance. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the polymeric PTC fuse category.

Substiute Parts

AGRF500

Littelfuse Inc.In Stock: 702AGRF500 Datasheet

Current PartRFQ

16R500GPR

Littelfuse Inc.In Stock: 615916R500GPR Datasheet

SimilarRFQ

16R500GU

Littelfuse Inc.In Stock: 121216R500GU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AGRF500 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Max: 16V
• Current - Hold (Ih) (Max): 5 A
• Package / Case: Radial, Disc
• Mounting Type: Through Hole
• Operating Temperature: -40°C ~ 85°C
• RoHS Status: ROHS3 Compliant

The identified substitutes (16R500GPR and 16R500GU) meet these core requirements. Variations in Current - Trip (It), Time to Trip, and Resistance - Initial (Ri) values remain within acceptable tolerance ranges for functional equivalence in polymeric PTC fuse applications. Both substitutes are manufactured by Littelfuse Inc. and maintain the same voltage and hold current ratings as the primary part.

Parameter Comparison

Engineering Selection Recommendations

Both 16R500GPR and 16R500GU are functionally equivalent to the AGRF500 for applications requiring 16V, 5A hold current polymeric PTC resettable fuses with through-hole radial mounting.

16R500GPR is packaged in Cut Tape (CT) format and carries cURus and TUV approval agency certifications with REACH Unaffected status.

16R500GU is packaged in Bulk format and carries cURus and TUV approval agency certifications with REACH Unaffected status.

Selection between these substitutes should be based on packaging requirements and supply chain availability. All three parts maintain ROHS3 compliance and are suitable for the same electrical operating conditions.

Frequently Asked Questions (FAQ)

Q: Can 16R500GPR and 16R500GU be used interchangeably with AGRF500?

A: Yes. All three parts share identical voltage (16V), hold current (5A), maximum current (100A), post-trip resistance (34 mOhms maximum), and operating temperature range (-40°C to 85°C). The primary differences are packaging format (Cut Tape vs. Bulk vs. Bag) and minor variations in trip current and initial resistance that do not affect functional equivalence.

Q: What is the difference between the packaging options?

A: AGRF500 is supplied in Bag packaging, 16R500GPR in Cut Tape (CT), and 16R500GU in Bulk. Packaging selection depends on assembly process requirements and inventory management practices. Electrical and mechanical specifications remain identical across all packaging formats.

Q: Are there mechanical compatibility concerns with the lead spacing variation?

A: Lead spacing differs slightly between AGRF500 (0.199" / 5.05mm) and the substitutes (0.201" / 5.10mm). This 0.06mm difference is within standard PCB design tolerances for through-hole radial components and does not present mechanical compatibility issues.

Q: Do all parts meet the same compliance standards?

A: AGRF500 carries AEC-Q200 ratings. Both 16R500GPR and 16R500GU carry cURus and TUV certifications. All three parts are ROHS3 compliant. Compliance requirements for your specific application should be verified against design specifications.