C310T-2-R-TR2 Equivalent & Substitute Parts

Part Overview

The C310T-2-R-TR2 is a ceramic cartridge fuse rated for 2 A at 250 V AC/DC with slow-blow response characteristics. This component is designed for through-hole mounting in axial configuration with a non-standard cartridge package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

C310T-2-R-TR2

Eaton - Electronics DivisionIn Stock: 1147C310T-2-R-TR2 Datasheet

Current PartRFQ

C310T-SC-2-R-TR2

Eaton - Electronics DivisionIn Stock: 696C310T-SC-2-R-TR2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the C310T-2-R-TR2 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 35 A (exact match required)

Mechanical Equivalence Criteria:

• Fuse Type: Cartridge, Ceramic (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Configuration: Cartridge, Non-Standard (Axial) (exact match required)

Manufacturer Consistency:

• All substitutes sourced from Eaton - Electronics Division to ensure design continuity and quality assurance

The C310T-SC-2-R-TR2 qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. This part represents an active product status alternative to the obsolete C310T-2-R-TR2.

Parameter Comparison

Engineering Selection Recommendations

The C310T-SC-2-R-TR2 is the primary active substitute for the obsolete C310T-2-R-TR2. Selection is based on the following engineering factors:

Product Status Alignment: The C310T-SC-2-R-TR2 maintains active product status with Eaton - Electronics Division, ensuring continued availability, technical support, and supply chain reliability compared to the obsolete C310T-2-R-TR2.

Electrical and Mechanical Compatibility: All critical electrical parameters (2 A current rating, 250 V AC voltage rating, slow-blow response, 35 A breaking capacity) and mechanical parameters (ceramic cartridge fuse, through-hole mounting, axial configuration) are identical between the main part and substitute, confirming functional equivalence in circuit protection applications.

Regulatory and Compliance Certifications: The C310T-SC-2-R-TR2 carries expanded approval agency certifications (CQC, cURus, KC, TUV, VDE) and RoHS compliance status, providing enhanced regulatory coverage for modern design requirements and international market deployment.

Physical Dimensions: The substitute exhibits reduced physical dimensions (0.142" Dia x 0.394" L versus 0.157" Dia x 0.453" L), which may provide space optimization benefits in compact circuit board layouts while maintaining the same cartridge, non-standard (axial) package configuration.

Operating Temperature Range: The C310T-SC-2-R-TR2 specifies an operating temperature range of -55°C to 125°C, providing defined thermal performance boundaries for system design and environmental qualification.

Frequently Asked Questions (FAQ)

Q: Can the C310T-SC-2-R-TR2 be used as a direct replacement for the C310T-2-R-TR2 in existing designs?

A: Yes. The C310T-SC-2-R-TR2 qualifies as a direct substitute based on identical electrical ratings (2 A, 250 V AC, slow-blow response, 35 A breaking capacity) and mechanical configuration (ceramic cartridge fuse, through-hole mounting, axial package). The substitute is sourced from the same manufacturer (Eaton - Electronics Division) and maintains functional equivalence for circuit protection applications.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), physical dimensions (the substitute is slightly smaller), DC cold resistance (26.5 mOhms versus 30 mOhms), operating temperature specification (-55°C to 125°C for the substitute), and regulatory certifications (the substitute includes additional approvals and RoHS compliance). These differences do not affect electrical or mechanical substitutability.

Q: Are there any physical installation considerations when switching from C310T-2-R-TR2 to C310T-SC-2-R-TR2?

A: Both parts use identical mounting types (through-hole) and package configurations (cartridge, non-standard axial). The C310T-SC-2-R-TR2 has reduced physical dimensions, which may provide improved fit in space-constrained applications. No circuit board redesign is required for substitution.

Q: What certifications does the C310T-SC-2-R-TR2 carry?

A: The C310T-SC-2-R-TR2 carries approvals from CQC, cURus, KC, TUV, and VDE. It is also RoHS compliant. These certifications support compliance with international regulatory requirements and quality standards.

Q: Is the DC cold resistance difference between the two parts significant?

A: The DC cold resistance of the C310T-SC-2-R-TR2 (26.5 mOhms) is lower than the C310T-2-R-TR2 (30 mOhms). This difference is within normal manufacturing tolerances for ceramic cartridge fuses and does not affect circuit protection performance or substitutability.

Q: What is the current availability status of these parts?

A: The C310T-2-R-TR2 is obsolete with limited remaining inventory (1069 pcs). The C310T-SC-2-R-TR2 is active with current inventory (652 pcs). For new designs and ongoing production, the C310T-SC-2-R-TR2 is the recommended selection.