AGRF800 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The AGRF800 is an active polymeric PTC resettable fuse manufactured by Littelfuse, rated for 16V maximum voltage with 8A hold current. This component functions as an automatic reset protective device for circuit protection applications, resetting after fault conditions are cleared. Substitute parts are identified to provide equivalent electrical and mechanical performance for applications requiring component alternatives due to inventory availability, procurement lead times, or design flexibility within specified parameter tolerances.

Substiute Parts

AGRF800

LittelfuseIn Stock: 1157AGRF800 Datasheet

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16R800GF

Littelfuse Inc.In Stock: 93916R800GF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 16R800GF qualifies as a direct substitute for the AGRF800 based on the following critical parameters:

• Identical voltage rating: 16V maximum
• Identical hold current rating: 8A maximum
• Identical physical dimensions: 0.500" L x 0.118" W (12.70mm x 3.00mm)
• Identical mounting type: Through Hole Radial, Disc
• Identical operating temperature range: -40°C ~ 85°C
• Identical RoHS3 compliance status
• Polymeric PTC resettable fuse technology from the same manufacturer

Substitution is valid within the electrical parameter tolerances specified for each part. The 16R800GF exhibits slightly different trip current (13.6A vs 15A) and initial resistance (5.6 mOhms vs 4.9 mOhms), which remain within acceptable ranges for equivalent circuit protection functionality.

Parameter Comparison

Engineering Selection Recommendations

Both the AGRF800 and 16R800GF are active products from Littelfuse with ROHS3 compliance. The 16R800GF carries additional third-party certifications (cURus, TUV) and REACH Unaffected status. Selection between these parts should be based on:

• Circuit protection requirements within the 8A hold current specification
• Availability and procurement lead times
• Regulatory compliance requirements for the end application
• Physical height constraints (AGRF800: 22.20mm maximum vs 16R800GF: 20.90mm maximum)
• Packaging requirements (AGRF800 supplied in Bag; 16R800GF supplied in Bulk)

Both parts maintain identical voltage ratings, operating temperature ranges, and post-trip resistance specifications, ensuring functional equivalence for standard circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 16R800GF replace the AGRF800 in existing designs?

A: Yes. Both parts share identical voltage ratings (16V), hold current ratings (8A), physical dimensions (0.500" x 0.118"), mounting type (Through Hole Radial), and operating temperature range (-40°C to 85°C). The 16R800GF has a slightly lower trip current (13.6A vs 15A) and marginally higher initial resistance (5.6 mOhms vs 4.9 mOhms), which remain within acceptable substitution tolerances for polymeric PTC resettable fuse applications.

Q: What are the key differences between these parts?

A: The primary differences are trip current specification (15A for AGRF800 vs 13.6A for 16R800GF), initial resistance (4.9 mOhms vs 5.6 mOhms), seated height (22.20mm vs 20.90mm), and certifications (16R800GF includes cURus and TUV approval). Both parts are functionally equivalent for 16V, 8A hold current circuit protection.

Q: Are there packaging differences?

A: Yes. The AGRF800 is supplied in Bag packaging, while the 16R800GF is supplied in Bulk packaging. This affects procurement quantities and handling but does not impact electrical or mechanical performance.

Q: Do both parts meet RoHS compliance?

A: Yes. Both the AGRF800 and 16R800GF are ROHS3 compliant. The 16R800GF additionally carries REACH Unaffected status.

Q: What is the maximum operating temperature for these parts?

A: Both parts operate across the identical temperature range of -40°C to 85°C, ensuring thermal compatibility in equivalent applications.