C310T-SC-2-R-TR2 Equivalent & Substitute Parts

Part Overview

The C310T-SC-2-R-TR2 is a ceramic cartridge fuse rated at 2A, 250VAC with slow-blow response characteristics. Manufactured by Eaton - Electronics Division, this through-hole component features a non-standard axial package measuring 3.60mm diameter by 10.00mm length. The part is currently active in production with 652 pieces available in new original stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, packaging formats, or inventory availability.

Substiute Parts

C310T-SC-2-R-TR2

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

Current PartRFQ

C310T-SC-2-R-TR1

Eaton - Electronics DivisionIn Stock: 2265C310T-SC-2-R-TR1 Datasheet

Parametric EquivalentRFQ

0877002.MRET1P

Littelfuse Inc.In Stock: 25250877002.MRET1P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the C310T-SC-2-R-TR2 are qualified based on the following critical parameters that must match or remain compatible:

Mandatory Matching Parameters:

• Current Rating: 2 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Mounting Type: Through Hole
• Package / Case: Cartridge, Non-Standard (Axial)
• Size / Dimension: 0.142" Dia x 0.394" L (3.60mm x 10.00mm)
• Breaking Capacity @ Rated Voltage: 35A
• Operating Temperature Range: -55°C ~ 125°C

Allowable Variations:

• Packaging format (Tape & Reel variant designations)
• Manufacturer identity (Eaton vs. Littelfuse)
• DC Cold Resistance values within functional tolerance
• Approval agency certifications (provided all required certifications are present)
• Melting I²t characteristics (secondary parameter)

The two identified substitutes meet all mandatory parameters while differing in packaging configuration and manufacturer source.

Parameter Comparison

Engineering Selection Recommendations

C310T-SC-2-R-TR1 (Eaton - Electronics Division)

This substitute maintains identical electrical and mechanical specifications to the main part. Both components are manufactured by Eaton and carry the same approval certifications (CQC, cURus, KC, TUV, VDE). The primary distinction is packaging format: TR1 designates Cut Tape packaging versus TR2 Tape & Reel format. DC Cold Resistance is identical at 26.5 mOhms. This substitute is appropriate for applications where Eaton sourcing is preferred and Cut Tape packaging is acceptable. Higher inventory availability (2200 pieces) supports supply chain continuity.

0877002.MRET1P (Littelfuse Inc.)

This substitute provides functional equivalence across all critical electrical parameters: 2A current rating, 250V AC voltage rating, slow-blow response, 35A breaking capacity, and identical physical dimensions. The component carries cULus and VDE certifications. DC Cold Resistance differs at 0.035 Ohms (35 mOhms) compared to 26.5 mOhms in the main part; this variance remains within acceptable tolerance for cartridge fuse applications. Littelfuse sourcing is appropriate when multi-manufacturer qualification is required or when Littelfuse supply chain advantages apply. Inventory availability is highest at 2459 pieces.

Both substitutes maintain RoHS compliance and operate across the full -55°C to 125°C temperature range. Selection between substitutes depends on procurement policy, supply chain strategy, and certification requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can C310T-SC-2-R-TR1 be used as a direct replacement for C310T-SC-2-R-TR2?

A: Yes. Both parts are manufactured by Eaton with identical electrical ratings (2A, 250VAC), fuse type (ceramic cartridge), response time (slow-blow), physical dimensions (3.60mm x 10.00mm), and breaking capacity (35A). The difference is packaging format: TR2 is Tape & Reel while TR1 is Cut Tape. Electrical performance and mechanical fit are equivalent.

Q: What is the difference between TR1 and TR2 packaging designations?

A: TR1 indicates Cut Tape packaging, suitable for manual or semi-automated assembly processes. TR2 indicates Tape & Reel packaging, optimized for high-speed automated pick-and-place assembly equipment. Both formats contain identical components; packaging selection depends on manufacturing process requirements.

Q: Is the Littelfuse 0877002.MRET1P compatible with designs specified for Eaton C310T-SC-2-R-TR2?

A: Yes, with the following considerations: All critical electrical parameters match (2A, 250VAC, slow-blow, 35A breaking capacity, identical dimensions). DC Cold Resistance differs (0.035 Ohms vs. 26.5 mOhms), which remains within functional tolerance for fuse applications. Littelfuse carries cULus and VDE certifications; verify that your application does not require the additional certifications present on the Eaton part (CQC, KC).

Q: Why does the Littelfuse part have higher DC Cold Resistance?

A: DC Cold Resistance is a secondary characteristic determined by internal element design and material composition. The 0.035 Ohms value for Littelfuse remains acceptable for cartridge fuse applications and does not affect the primary function of overcurrent protection at the specified 2A rating and 250V voltage.

Q: Can these fuses be used in both AC and DC circuits?

A: The specifications indicate 250V AC rating. Verify DC voltage compatibility with your specific application requirements and circuit design before substitution.

Q: What approval certifications are critical for my application?

A: The main part carries CQC, cURus, KC, TUV, and VDE certifications. The Eaton substitute (TR1) carries identical certifications. The Littelfuse substitute carries cULus and VDE certifications. Confirm which certifications your application or regional standards require before selecting a substitute.

Q: Are there inventory or lead-time advantages to using substitutes?

A: Yes. The main part (TR2) has 652 pieces in stock. The Eaton substitute (TR1) has 2200 pieces available. The Littelfuse substitute has 2459 pieces available. Higher inventory levels may provide supply chain advantages and shorter lead times depending on procurement timing.