SCHURTER 2020.0005 Equivalent & Substitute Parts

Part Overview

The SCHURTER 2020.0005 is a 1.25A 250VAC fuse cartridge in 5x20mm package format, designed for telecom applications. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs. The SSU 5x20 series cartridge requires a compatible holder for installation and operates across a temperature range of -40°C to 85°C with slow-blow response characteristics.

Substiute Parts

2020.0005

SCHURTER Inc.In Stock: 6582020.0005 Datasheet

Current PartRFQ

02151.25HXP

Littelfuse Inc.In Stock: 235902151.25HXP Datasheet

SimilarRFQ

02151.25MXP

Littelfuse Inc.In Stock: 516202151.25MXP Datasheet

SimilarRFQ

BK/S505-1.25-R

Eaton - Electronics DivisionIn Stock: 908BK/S505-1.25-R Datasheet

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S505-1.25-R

Eaton - Electronics DivisionIn Stock: 906S505-1.25-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 2020.0005 is determined by strict equivalence across the following critical parameters:

• Current Rating: 1.25A (exact match required)
• Voltage Rating: 250VAC (exact match required)
• Package Dimensions: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge format (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Configuration: Requires Holder (exact match required)
• Breaking Capacity: 1.5kA minimum (exact match required)

All substitute parts listed below meet these electrical and mechanical parameters. Substitute parts are sourced from active product lines, ensuring availability and ongoing manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are sourced from active product lines and carry current manufacturer support. Selection among the substitute options should be based on the following factors:

Littelfuse 02151.25HXP and 02151.25MXP: Both parts are from the active 215 series and carry comprehensive international approvals including CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE. Operating temperature range extends to -55°C to 125°C, providing broader environmental coverage than the original part. Current inventory levels support immediate availability.

Eaton BK/S505-1.25-R and S505-1.25-R: Both parts are from the active S505 series with extensive certification coverage including BSI, CCC/CQC, CSA, cULus, IMQ, KC, PSE/JET, SEMKO, and VDE. These parts carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints. Both are suitable for direct substitution in existing holder configurations.

All substitute parts maintain the same electrical performance characteristics, breaking capacity, and mechanical compatibility required for the original SCHURTER 2020.0005 application.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the SCHURTER 2020.0005?

A: Yes. All listed substitute parts meet the critical electrical and mechanical parameters: 1.25A current rating, 250VAC voltage rating, 5x20mm package dimensions, slow-blow response, 1.5kA breaking capacity, and cartridge format requiring a holder. Physical dimensions and electrical performance are equivalent.

Q: What is the difference between the Littelfuse ceramic fuses and the original SCHURTER cartridge?

A: The Littelfuse 02151.25HXP and 02151.25MXP are ceramic construction fuses, whereas the SCHURTER 2020.0005 construction material is not specified in the provided data. Both types function identically within the specified electrical parameters and are compatible with standard 5x20mm fuse holders.

Q: Are there temperature range differences I should consider?

A: The SCHURTER 2020.0005 operates from -40°C to 85°C. The Littelfuse substitutes extend this range to -55°C to 125°C, providing enhanced performance in extreme temperature environments. The Eaton S505 series does not specify an operating temperature range in the provided data.

Q: Do all substitute parts have the same approvals as the original?

A: The original SCHURTER part carries CSA, UR, and VDE approvals. Littelfuse substitutes add CCC, CE, KC, PSE, and SEMKO certifications. Eaton substitutes include BSI, CCC/CQC, CSA, cULus, IMQ, KC, PSE/JET, SEMKO, and VDE. All parts maintain ROHS3 compliance and REACH unaffected status.

Q: Will these fuses work in my existing fuse holder?

A: Yes. All substitute parts are 5x20mm cartridge format requiring a holder, matching the original SCHURTER mounting configuration. Physical dimensions are identical: 0.205" diameter x 0.787" length.

Q: What is the melting I²t specification and does it vary among substitutes?

A: The SCHURTER 2020.0005 has a melting I²t of 1.86. Littelfuse substitutes specify 3.2, and Eaton substitutes specify 2.22. These variations reflect different fuse element designs but do not affect functional compatibility within the specified electrical parameters.