SCHURTER 3-103-111 Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-111 is a 1.5 A 125 V AC/DC surface mount board mount fuse in 2-SMD square end block package format. This component is classified as Active product status and is designed for fast-blow protection in electronic circuits requiring board-level fuse integration. Substitute parts are identified when packaging format changes from Cut Tape to Tape & Reel while maintaining identical electrical and mechanical specifications, or when series upgrades provide enhanced thermal performance within the same functional parameters.

Substiute Parts

3-103-111

SCHURTER Inc.In Stock: 40513-103-111 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

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 3-103-111 are qualified based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Current Rating: 1.5 A
• Voltage Rating AC: 125 V
• Voltage Rating DC: 125 V
• Response Time: Fast Blow
• Breaking Capacity: 50 A AC, 300 A DC

Mechanical Parameters (Must Match Exactly):

• Mounting Type: Surface Mount
• Package / Case: 2-SMD, Square End Block
• Physical Dimensions: 0.126" L x 0.061" W x 0.061" H (3.20mm x 1.55mm x 1.55mm)

Allowable Variations:

• Packaging format: Cut Tape (CT) to Tape & Reel (TR) conversion
• Series designation: MGA-A to MGA upgrade
• Operating Temperature Range: Extended from -55°C ~ 125°C to -55°C ~ 150°C
• Melting I²t: 0.014 to 0.064 (enhanced thermal performance)
• Approval Agency: cURus, UL to cURus (subset acceptable)

The substitute parts 3410.0033.02 and 3410.0033.03 maintain identical electrical and mechanical specifications while offering improved thermal characteristics and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts 3410.0033.02 and 3410.0033.03 are qualified replacements for the SCHURTER 3-103-111 based on maintained electrical and mechanical specifications. Selection between these options depends on application requirements:

3410.0033.02 and 3410.0033.03 Substitution Basis:

• All critical electrical parameters remain identical: 1.5 A current rating, 125 V AC/DC voltage rating, 50 A AC / 300 A DC breaking capacity
• Physical dimensions and mounting interface are unchanged, ensuring PCB compatibility
• Both parts maintain ROHS3 compliance and cURus certification
• Extended operating temperature range (-55°C ~ 150°C) provides enhanced thermal margin compared to the main part
• Tape & Reel packaging format accommodates high-volume automated assembly processes
• All parts retain Active product status

The primary distinction between 3410.0033.02 and 3410.0033.03 is inventory availability. Both are electrically and mechanically interchangeable with the 3-103-111 within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can 3410.0033.02 or 3410.0033.03 be used as direct replacements for 3-103-111 in existing designs?

A: Yes. Both substitute parts maintain identical current rating (1.5 A), voltage ratings (125 V AC/DC), response time (Fast Blow), breaking capacity (50 A AC, 300 A DC), and physical dimensions (3.20mm x 1.55mm x 1.55mm). PCB footprint and electrical performance are unchanged.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for manual handling and small-quantity applications. Tape & Reel (TR) packaging supplies components on continuous reels optimized for automated pick-and-place assembly equipment in high-volume manufacturing.

Q: Are the substitute parts certified to the same standards as the main part?

A: The main part 3-103-111 carries cURus and UL certifications. Substitute parts 3410.0033.02 and 3410.0033.03 carry cURus certification. Both certifications confirm compliance with safety and performance standards for board mount fuses.

Q: What does the extended operating temperature range mean for the substitute parts?

A: Substitute parts operate from -55°C to 150°C, compared to -55°C to 125°C for the main part. This extended upper temperature limit provides additional thermal margin in applications subject to elevated ambient or self-heating conditions.

Q: Are all three parts ROHS3 compliant?

A: Yes. The main part 3-103-111 and both substitute parts 3410.0033.02 and 3410.0033.03 are ROHS3 compliant, confirming restriction of hazardous substances in accordance with applicable regulations.

Q: Can I mix packaging formats (Cut Tape and Tape & Reel) in the same assembly process?

A: Packaging format selection depends on assembly equipment capability and production workflow. Cut Tape is suitable for manual or semi-automated processes, while Tape & Reel is required for fully automated high-speed pick-and-place systems. Mixing formats within a single production run requires process validation.