SCHURTER 3-103-102 Surface Mount Fuse Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-102 is a 750 mA, 125 V AC/DC surface mount board fuse in the MGA-A series. This fast-blow fuse is designed for circuit protection in SMD applications with a 2-SMD square end block package. The part is active in production with full cURus and UL approval certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and packaging specifications to support procurement flexibility and supply chain continuity.

Substiute Parts

3-103-102

SCHURTER Inc.In Stock: 10553-103-102 Datasheet

Current PartRFQ

3410.0027.03

SCHURTER Inc.In Stock: 39933410.0027.03 Datasheet

UpgradeRFQ

3410.0029.02

SCHURTER Inc.In Stock: 32003410.0029.02 Datasheet

UpgradeRFQ

3-103-103

SCHURTER Inc.In Stock: 33223-103-103 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3-103-102 is determined by the following critical parameters:

• Current Rating: 750 mA (primary protection function)
• Voltage Rating: 125 V AC and 125 V DC (electrical safety requirement)
• Response Time: Fast Blow (circuit protection characteristic)
• Mounting Type: Surface Mount (assembly compatibility)
• Package / Case: 2-SMD, Square End Block (PCB footprint compatibility)
• Breaking Capacity: 50 A AC, 300 A DC (fault current handling)

The 3-103-102 has two substitute relationships:

Parametric Equivalent: Part 3-103-103 matches all critical electrical and mechanical parameters, including current rating, voltage ratings, response time, package type, and physical dimensions. Both parts are in the MGA-A series with identical melting I²t values (0.003) and operating temperature range (-55°C ~ 125°C).

Upgrade Substitutes: Part 3410.0029.02 matches the 750 mA current rating, voltage ratings, response time, and package specifications. This part is in the MGA series with extended operating temperature range (-55°C ~ 150°C) and different packaging (Tape & Reel vs. Cut Tape).

Parameter Comparison

Engineering Selection Recommendations

3-103-103 (Parametric Equivalent): This part is the direct equivalent for the 3-103-102. Both parts carry identical electrical specifications, mechanical dimensions, and certifications (cURus, UL). Selection of 3-103-103 requires no design or assembly modifications. Both parts are ROHS3 compliant and active in production.

3410.0029.02 (Upgrade Substitute): This part provides functional equivalence with extended operating temperature capability (-55°C ~ 150°C versus -55°C ~ 125°C). The part maintains all critical electrical parameters and physical dimensions. The primary difference is packaging format (Tape & Reel versus Cut Tape) and series designation (MGA versus MGA-A). This part carries cURus certification; UL certification is not listed. Selection of 3410.0029.02 is suitable for applications requiring the extended temperature range, provided that the Tape & Reel packaging format is compatible with assembly processes.

All substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8536.10.0040.

Frequently Asked Questions (FAQ)

Q: Can 3-103-103 be used as a direct replacement for 3-103-102?

A: Yes. The 3-103-103 is a parametric equivalent with identical current rating (750 mA), voltage ratings (125 V AC/DC), response time (Fast Blow), package type (2-SMD, Square End Block), and physical dimensions (3.20mm x 1.55mm x 1.55mm). Both parts are in the MGA-A series with matching certifications (cURus, UL) and operating temperature range (-55°C ~ 125°C). No design or assembly changes are required.

Q: What is the difference between 3-103-102 and 3410.0029.02?

A: Both parts share the same current rating (750 mA), voltage ratings (125 V AC/DC), response time (Fast Blow), and physical dimensions. The 3410.0029.02 offers an extended operating temperature range (-55°C ~ 150°C) compared to the 3-103-102 (-55°C ~ 125°C). The 3410.0029.02 is supplied in Tape & Reel packaging, while the 3-103-102 is supplied in Cut Tape. The 3410.0029.02 is in the MGA series; the 3-103-102 is in the MGA-A series. The 3410.0029.02 carries cURus certification; UL certification is not listed.

Q: Can I substitute 3410.0027.03 (500 mA) for the 3-103-102 (750 mA)?

A: No. The 3410.0027.03 has a different current rating (500 mA) and is not listed as a substitute for the 3-103-102. Current rating is a primary protection parameter and must match the circuit design requirements.

Q: What packaging formats are available for these fuses?

A: The 3-103-102 and 3-103-103 are supplied in Cut Tape (CT) packaging. The 3410.0029.02 is supplied in Tape & Reel (TR) packaging. Packaging selection depends on assembly equipment and procurement volume requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 3-103-102, 3-103-103, and 3410.0029.02 are all ROHS3 compliant and REACH unaffected.

Q: Which parts carry UL certification?

A: The 3-103-102 and 3-103-103 carry both cURus and UL certifications. The 3410.0029.02 carries cURus certification only.