SCHURTER 3-103-089 Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-089 is a 250 mA, 125 V AC/DC surface mount board fuse in 2-SMD square end block package configuration. This fast-blow fuse is designed for circuit protection in surface mount applications with a breaking capacity of 50 A AC and 300 A DC. The part is active in production status with full cURus and UL approval certifications. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format preferences, or design revision requirements.

Substiute Parts

3-103-089

SCHURTER Inc.In Stock: 7643-103-089 Datasheet

Current PartRFQ

3410.0021.03

SCHURTER Inc.In Stock: 16603410.0021.03 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The substitute part 3410.0021.03 is classified as an equivalent alternative based on the following criteria:

Matching Parameters:

• Voltage Rating: 125 V AC / 125 V DC (identical)
• Mounting Type: Surface Mount (identical)
• Package / Case: 2-SMD, Square End Block (identical)
• Physical Dimensions: 0.126" L x 0.061" W x 0.061" H (identical)
• Response Time: Fast Blow (identical)
• Breaking Capacity: 50 A AC, 300 A DC (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Fuse Type: Board Mount (Cartridge Style Excluded) (identical)

Differing Parameters:

• Current Rating: 200 mA (substitute) vs. 250 mA (main part)
• Series: MGA (substitute) vs. MGA-A (main part)
• Packaging Format: Tape & Reel (substitute) vs. Strip (main part)
• Operating Temperature Range: -55°C ~ 150°C (substitute) vs. -55°C ~ 125°C (main part)
• Approval Agencies: cURus (substitute) vs. cURus, UL (main part)

The 3410.0021.03 operates at a lower current rating and is suitable for applications requiring 200 mA protection where the 250 mA rating of the main part exceeds circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active production status with ROHS3 compliance and REACH unaffected designation. The main part 3-103-089 carries dual cURus and UL certifications, while the substitute 3410.0021.03 carries cURus certification. Selection between these parts depends on circuit current protection requirements: the 250 mA rating of 3-103-089 is appropriate for circuits requiring that specific threshold, while the 200 mA rating of 3410.0021.03 is suitable for lower-current applications. Both parts share identical mechanical footprints, voltage ratings, and breaking capacities, enabling direct PCB layout compatibility. The substitute part offers an extended operating temperature range to 150°C compared to the main part's 125°C maximum. Packaging format differs between strip and tape & reel configurations, which may influence procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can 3410.0021.03 be used as a direct replacement for 3-103-089 in all applications?

A: Direct replacement is possible only in applications where the circuit current protection requirement is 200 mA or lower. The substitute part's lower current rating means it will open at 200 mA instead of 250 mA. If the original design requires 250 mA protection, the substitute is not appropriate.

Q: What is the difference in packaging between these two parts?

A: The main part 3-103-089 is supplied in Strip packaging, while the substitute 3410.0021.03 is supplied in Tape & Reel (TR) format. Both contain identical components; the difference is in the delivery and handling format for assembly operations.

Q: Are both parts certified to the same standards?

A: The main part 3-103-089 carries cURus and UL certifications. The substitute 3410.0021.03 carries cURus certification. If UL certification is a design requirement, the main part must be used.

Q: Do these parts have the same physical dimensions?

A: Yes. Both parts measure 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm) and use identical 2-SMD square end block packaging, ensuring PCB footprint compatibility.

Q: What is the operating temperature difference between these parts?

A: The main part 3-103-089 operates from -55°C to 125°C. The substitute 3410.0021.03 operates from -55°C to 150°C, providing a 25°C higher maximum temperature rating.

Q: Are both parts RoHS compliant?

A: Yes. Both 3-103-089 and 3410.0021.03 are ROHS3 compliant and REACH unaffected.