TR3-S505SC-2-R Equivalent & Substitute Parts

Part Overview

The TR3-S505SC-2-R is a ceramic cartridge fuse rated for 2 A at 250 V AC/DC with a slow-blow response characteristic. This through-hole component features a 5mm x 20mm axial package and is designed for circuit protection applications requiring reliable overcurrent interruption. The part maintains active product status with full compliance to international safety standards including BSI, CSA, cURus, VDE, and PSE/JET certifications. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

TR3-S505SC-2-R

Eaton - Electronics DivisionIn Stock: 1287TR3-S505SC-2-R Datasheet

Current PartRFQ

TR2/S505SC-2-R

Eaton - Electronics DivisionIn Stock: 741TR2/S505SC-2-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TR3-S505SC-2-R is determined by strict equivalence across the following critical parameters: current rating (2 A), voltage rating (250 V AC), fuse type (ceramic cartridge), response characteristic (slow blow), physical package dimensions (5mm x 20mm axial), and mounting configuration (through hole). The substitute part TR2/S505SC-2-R satisfies all these requirements, maintaining identical electrical performance and mechanical compatibility. Both parts belong to the Eaton S505 series and carry equivalent international safety certifications. Substitution is valid when all specified parameters align without deviation.

Parameter Comparison

Engineering Selection Recommendations

Both TR3-S505SC-2-R and TR2/S505SC-2-R are active products from Eaton's S505 ceramic fuse series with full international certification coverage. The TR2/S505SC-2-R variant carries ROHS3 compliance, representing a more recent regulatory alignment compared to the standard RoHS compliance of the TR3-S505SC-2-R. Minor variations in melting I²t (9.6 versus 9.83) and DC cold resistance (0.0545 versus 0.055 Ohms) fall within acceptable tolerance ranges for ceramic cartridge fuse performance and do not affect functional equivalence. Both parts maintain identical electrical ratings, breaking capacity, and mechanical specifications. Selection between these parts may be based on inventory availability, packaging preference (Tape & Reel format for both), or regulatory requirement alignment with ROHS3 standards.

Frequently Asked Questions (FAQ)

Q: Can TR2/S505SC-2-R be used as a direct replacement for TR3-S505SC-2-R in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent with identical current ratings (2 A), voltage ratings (250 V AC), fuse type (ceramic cartridge), response characteristics (slow blow), and physical dimensions (5mm x 20mm axial). Both are through-hole mounted components within the Eaton S505 series.

Q: What are the differences between these two part numbers?

A: The primary differences are minor variations in melting I²t (9.6 versus 9.83) and DC cold resistance (0.0545 versus 0.055 Ohms), which remain within acceptable performance tolerances. The TR2/S505SC-2-R carries ROHS3 compliance versus standard RoHS compliance on the TR3-S505SC-2-R.

Q: Are both parts available in the same packaging format?

A: Yes. Both TR3-S505SC-2-R and TR2/S505SC-2-R are supplied in Tape & Reel (TR) packaging, ensuring compatibility with automated assembly processes.

Q: Do both parts carry the same international certifications?

A: Yes. Both parts hold identical approval certifications from BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, and VDE, ensuring compliance with global safety standards.

Q: What is the breaking capacity of these fuses?

A: Both parts have a breaking capacity of 1.5 kA at the rated voltage of 250 V AC.

Q: Are these parts suitable for AC and DC applications?

A: Yes. Both TR3-S505SC-2-R and TR2/S505SC-2-R are rated for 250 V AC/DC operation, providing flexibility for diverse circuit protection applications.