Equivalent & Substitute Parts for TR2/C518-3-R

Part Overview

The TR2/C518-3-R is a 3 A, 250 V AC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This through-hole component features a 2AG package format with dimensions of 5mm x 15mm (axial) and is designed for general-purpose circuit protection applications. The part maintains active product status with 1,159 pieces in current inventory. Substitute parts are identified to address supply chain requirements, packaging preferences, and extended voltage rating capabilities while maintaining electrical and mechanical compatibility.

Substiute Parts

TR2/C518-3-R

Eaton - Electronics DivisionIn Stock: 1196TR2/C518-3-R Datasheet

Current PartRFQ

0224003.DRT1P

Littelfuse Inc.In Stock: 26790224003.DRT1P Datasheet

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0224003.HXP

Littelfuse Inc.In Stock: 36860224003.HXP Datasheet

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0224003.MXP

Littelfuse Inc.In Stock: 18090224003.MXP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TR2/C518-3-R is determined by the following mandatory parameters:

Critical Matching Parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)

Allowable Variations:

• DC Voltage Rating: Substitute parts may include DC voltage ratings not present in the main part
• Breaking Capacity: Substitute parts may exceed the main part's breaking capacity
• Melting I²t: Substitute parts may differ within the fast-blow classification
• Packaging Format: Tape & Reel (TR), Cut Tape (CT), and Bulk packaging are interchangeable for the same electrical component
• Approval Agencies: Substitute parts may include additional certifications beyond the main part

All three identified substitute parts meet these criteria and are qualified for direct replacement in applications requiring 3 A, 250 V AC fast-blow glass cartridge fuses in 2AG format.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (0224003.DRT1P, 0224003.HXP, 0224003.MXP) are electrically and mechanically equivalent to the TR2/C518-3-R for AC applications at 250 V, 3 A.

Selection Criteria by Application Context:

For AC-only circuits: The TR2/C518-3-R and all three Littelfuse substitutes are functionally equivalent. Selection should be based on packaging requirements and inventory availability.

For circuits requiring DC voltage capability: The Littelfuse parts provide 125 V DC rating, which the Eaton part does not specify. This extended rating does not compromise AC performance and provides additional application flexibility.

For packaging format requirements:

• 0224003.DRT1P is supplied in Cut Tape (CT) format
• 0224003.HXP and 0224003.MXP are supplied in Bulk format

For regulatory compliance: All substitute parts carry CSA and UL certifications matching the main part. Littelfuse parts additionally include CE and PSE approvals, providing broader international compliance coverage.

For temperature-sensitive applications: Littelfuse parts specify an operating temperature range of -55°C to 125°C, whereas the Eaton part does not provide this specification. This defined range supports applications with extended temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0224003 series parts directly replace the Eaton TR2/C518-3-R in existing designs?

A: Yes. All three Littelfuse parts (0224003.DRT1P, 0224003.HXP, 0224003.MXP) are direct electrical and mechanical replacements for AC applications at 250 V, 3 A. The 2AG package format, through-hole mounting, fast-blow response, and 100 A breaking capacity at rated voltage are identical. Packaging format differences (Tape & Reel versus Cut Tape versus Bulk) do not affect electrical performance.

Q: What is the significance of the DC voltage rating on the Littelfuse parts?

A: The Littelfuse parts include a 125 V DC rating that is not specified on the Eaton part. This rating indicates the fuse's capability in DC circuits. For AC-only applications, this additional rating does not affect performance. For applications using both AC and DC circuits, the Littelfuse parts provide documented DC protection capability.

Q: Are there differences in fuse response characteristics between the main part and substitutes?

A: All parts are classified as fast-blow fuses. The melting I²t values differ slightly (Eaton: 6.1 versus Littelfuse: 4.62), indicating the Littelfuse parts respond marginally faster. Both values fall within the fast-blow classification and are suitable for general-purpose circuit protection. The difference does not constitute a functional incompatibility.

Q: What packaging format should be selected for production assembly?

A: Selection depends on assembly equipment and process requirements. The 0224003.DRT1P in Cut Tape (CT) format is suitable for automated pick-and-place systems. The 0224003.HXP and 0224003.MXP in Bulk format are suitable for manual assembly or systems requiring bulk component feeding. All three deliver the same electrical component.

Q: Do the substitute parts meet the same regulatory standards as the main part?

A: Yes. All substitute parts carry CSA and UL certifications, matching the main part's compliance profile. The Littelfuse parts additionally include CE and PSE certifications, providing expanded regulatory coverage for international markets.

Q: Is the difference in DC cold resistance significant for circuit design?

A: The DC cold resistance values (Eaton: 0.038 Ohms versus Littelfuse: 0.0317 Ohms) represent the fuse element's resistance in the cold state. Both values are low and typical for 3 A fast-blow cartridge fuses. This difference does not affect circuit protection performance in standard applications.