SCHURTER 3-103-085 Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-085 is a 200 mA, 125 V AC/DC surface mount board fuse in the MGA-A series. This fast-blow fuse is designed for circuit protection in compact surface mount applications with a 2-SMD square end block package. The part is currently active in production with full inventory availability. Substitute parts may be required when application specifications demand higher current ratings, increased voltage ratings, or alternative package configurations while maintaining board mount surface mount functionality.

Substiute Parts

3-103-085

SCHURTER Inc.In Stock: 11983-103-085 Datasheet

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3403.0021.11

SCHURTER Inc.In Stock: 14243403.0021.11 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SCHURTER 3403.0021.11 is identified as a substitute for the 3-103-085 based on the following substitution criteria:

Common Substitution Parameters:

• Mounting Type: Both are surface mount board mount fuses
• Fuse Type: Both are board mount (cartridge style excluded)
• Response Time: Both are fast-blow fuses
• Operating Temperature Range: Both operate from -55°C to 125°C
• RoHS Compliance: Both are ROHS3 compliant
• Regulatory Approval: Both carry cURus certification

Differentiation Parameters:

• Current Rating: 3403.0021.11 provides 3.15 A versus 200 mA in the main part
• Voltage Rating: 3403.0021.11 rated for 250 V AC/DC versus 125 V AC/DC
• Package Configuration: 3403.0021.11 uses 2-SMD J-Lead versus 2-SMD square end block
• Physical Dimensions: 3403.0021.11 is larger (11.00mm x 4.60mm x 3.90mm versus 3.20mm x 1.55mm x 1.55mm)
• Series: 3403.0021.11 belongs to OMF 250 series

Substitution is valid when circuit design permits higher current and voltage ratings, and when the larger package footprint can be accommodated on the PCB.

Parameter Comparison

Engineering Selection Recommendations

Both the 3-103-085 and 3403.0021.11 are active production parts with full regulatory compliance. Selection between these parts depends on circuit protection requirements:

The 3-103-085 is appropriate for applications requiring 200 mA protection at 125 V AC/DC with compact footprint constraints. This part carries UL and cURus approvals.

The 3403.0021.11 is appropriate for applications requiring higher current protection (3.15 A) and higher voltage ratings (250 V AC/DC). This part carries VDE and cURus approvals. The larger package footprint must be accommodated in PCB layout.

Both parts maintain identical operating temperature ranges and RoHS3 compliance, ensuring environmental and regulatory consistency across substitution scenarios.

Frequently Asked Questions (FAQ)

Q: Can the 3403.0021.11 be used as a direct replacement for the 3-103-085?

A: Electrical substitution is valid only if the circuit design permits higher current (3.15 A versus 200 mA) and voltage (250 V versus 125 V) ratings. Physical substitution requires PCB layout accommodation for the larger package dimensions (11.00mm x 4.60mm x 3.90mm versus 3.20mm x 1.55mm x 1.55mm).

Q: What are the key differences in package configuration?

A: The 3-103-085 uses a 2-SMD square end block package, while the 3403.0021.11 uses a 2-SMD J-Lead package. These configurations have different footprints and solder pad layouts, requiring PCB design verification before substitution.

Q: Are both parts RoHS compliant?

A: Yes, both the 3-103-085 and 3403.0021.11 are ROHS3 compliant, meeting environmental regulatory requirements.

Q: What regulatory certifications apply to each part?

A: The 3-103-085 carries cURus and UL approvals. The 3403.0021.11 carries cURus and VDE approvals. Both certifications are recognized for board mount fuse applications.

Q: Do both parts operate across the same temperature range?

A: Yes, both parts operate from -55°C to 125°C, providing identical thermal performance specifications.