SCHURTER 3-103-112 Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-112 is a 1.5 A 125 V AC/DC surface mount board mount fuse in the MGA-A series. This fast-blow fuse is designed for SMD applications with a 2-SMD square end block package. The part is active and widely stocked, with 1048 units available. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging requirements differ.

Substiute Parts

3-103-112

SCHURTER Inc.In Stock: 11113-103-112 Datasheet

Current PartRFQ

3410.0033.02

SCHURTER Inc.In Stock: 12793410.0033.02 Datasheet

UpgradeRFQ

3410.0033.03

SCHURTER Inc.In Stock: 67113410.0033.03 Datasheet

UpgradeRFQ

3-103-111

SCHURTER Inc.In Stock: 40513-103-111 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters:

• Current Rating: 1.5 A
• Voltage Rating: 125 V AC / 125 V DC
• Response Time: Fast Blow
• Mounting Type: Surface Mount
• Package / Case: 2-SMD, Square End Block
• Physical Dimensions: 0.126" L x 0.061" W x 0.061" H
• RoHS Compliance: ROHS3 Compliant

All identified substitutes meet these core electrical and mechanical requirements. Differences in series designation (MGA-A vs. MGA), packaging format (Tape & Reel vs. Cut Tape), and operating temperature range do not affect functional interchangeability for the specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are active products with ROHS3 compliance and cURus certification. The 3-103-112 and 3-103-111 both carry UL approval in addition to cURus certification. Parts 3410.0033.02 and 3410.0033.03 support an extended operating temperature range of -55°C to 150°C compared to the -55°C to 125°C range of the main part.

Selection between upgrade parts 3410.0033.02 and 3410.0033.03 should be based on inventory availability and procurement lead time requirements. Part 3410.0033.03 has the highest stock level at 6602 units. The parametric equivalent 3-103-111 differs only in packaging format (Cut Tape vs. Tape & Reel) and is suitable for applications where cut tape packaging is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 3410.0033.02 and 3410.0033.03 be used interchangeably with 3-103-112?

A: Yes. Both parts meet all critical electrical and mechanical parameters: 1.5 A current rating, 125 V AC/DC voltage rating, fast-blow response, surface mount configuration, and identical physical dimensions. The extended operating temperature range (-55°C to 150°C) provides additional margin in high-temperature applications.

Q: What is the difference between 3-103-112 and 3-103-111?

A: The parts are parametric equivalents with identical electrical specifications and dimensions. The primary difference is packaging format: 3-103-112 is supplied in Tape & Reel format, while 3-103-111 is supplied in Cut Tape format. Both carry cURus and UL approvals.

Q: Are there differences in approval certifications between the substitute parts?

A: The main part 3-103-112 and equivalent 3-103-111 carry both cURus and UL approvals. Upgrade parts 3410.0033.02 and 3410.0033.03 carry cURus approval. Verify that your application requirements are satisfied by the available certifications before selection.

Q: Can I use these fuses in applications requiring UL certification?

A: Parts 3-103-112 and 3-103-111 carry UL approval and are suitable for UL-certified applications. Parts 3410.0033.02 and 3410.0033.03 carry cURus approval only and should be verified against specific UL requirements before use in UL-certified designs.

Q: What is the significance of the Melting I²t value difference?

A: The main part 3-103-112 has a Melting I²t of 0.014, while upgrade parts 3410.0033.02 and 3410.0033.03 have a Melting I²t of 0.064. This parameter is provided for reference but does not affect substitution eligibility for applications specified by current rating and voltage rating.