SCHURTER 3-103-118 Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-103-118 is a 2.5 A 125 V AC/DC surface mount board mount fuse in 2-SMD, Square End Block package configuration. This fast blow fuse is designed for circuit protection in applications requiring 125 V AC and 125 V DC rated protection. The part is active in production status and available in Tape & Reel packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization across compatible electrical and mechanical specifications.

Substiute Parts

3-103-118

SCHURTER Inc.In Stock: 9223-103-118 Datasheet

Current PartRFQ

3410.0035.03

SCHURTER Inc.In Stock: 36153410.0035.03 Datasheet

UpgradeRFQ

3410.0036.03

SCHURTER Inc.In Stock: 37433410.0036.03 Datasheet

UpgradeRFQ

3-103-119

SCHURTER Inc.In Stock: 34073-103-119 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 3-103-118 are identified based on the following critical parameters that determine functional interchangeability:

Primary Substitution Criteria:

• Current Rating: 2.5 A (exact match required for circuit protection function)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2-SMD, Square End Block (exact match required)
• Physical Dimensions: 0.126" L x 0.061" W x 0.061" H (exact match required for PCB layout compatibility)
• Breaking Capacity: 50A AC, 300A DC (exact match required)

Packaging Variation Allowed:

• Tape & Reel (TR) to Cut Tape (CT) substitution is permitted when inventory or procurement requirements necessitate alternative packaging formats, provided all electrical and mechanical parameters remain identical.

Series Variation Allowed:

• MGA-A series (original) to MGA series (substitute) substitution is permitted when electrical specifications, dimensional requirements, and approval certifications are maintained.

The substitute parts 3410.0036.03, 3410.0035.03, and 3-103-119 meet these criteria with documented equivalence or upgrade status.

Parameter Comparison

Engineering Selection Recommendations

3410.0036.03 (Upgrade Substitute): This part maintains identical electrical specifications to the 3-103-118 at 2.5 A, 125 V AC/DC with matching mechanical dimensions and breaking capacity. The upgrade designation reflects extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C). Both parts are active in production status and ROHS3 compliant. The 3410.0036.03 carries cURus approval; the original 3-103-118 carries both cURus and UL approval. Selection should account for specific approval requirements of the end application.

3410.0035.03 (Upgrade Substitute): This part differs in current rating at 2 A versus the 2.5 A specification of the 3-103-118. This substitution is applicable only in circuit designs where the lower current rating provides adequate protection margins. The 3410.0035.03 offers extended operating temperature range (-55°C ~ 150°C) and is active in production status with cURus approval and ROHS3 compliance. This part is not a direct equivalent and requires circuit analysis to confirm suitability.

3-103-119 (Parametric Equivalent): This part is electrically and mechanically identical to the 3-103-118, with matching 2.5 A, 125 V AC/DC ratings, operating temperature range, and approval certifications (cURus, UL). The primary difference is packaging format: 3-103-119 is supplied in Cut Tape (CT) format while 3-103-118 is supplied in Tape & Reel (TR) format. Both are active in production status and ROHS3 compliant. Selection between these parts depends on assembly equipment compatibility and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can 3410.0035.03 (2 A) be used as a direct replacement for 3-103-118 (2.5 A)?

A: No. The 3410.0035.03 has a lower current rating of 2 A compared to the 2.5 A specification of the 3-103-118. Direct substitution is not recommended without circuit analysis. The lower current rating will cause the fuse to open at a lower threshold, potentially affecting circuit operation. Use only if the application circuit design permits operation at the lower 2 A protection level.

Q: What is the difference between 3-103-118 and 3-103-119?

A: These parts are parametric equivalents with identical electrical and mechanical specifications: 2.5 A, 125 V AC/DC, fast blow response, -55°C ~ 125°C operating temperature, cURus and UL approval, and ROHS3 compliance. The sole difference is packaging format: 3-103-118 is supplied in Tape & Reel (TR) format, while 3-103-119 is supplied in Cut Tape (CT) format. Selection depends on assembly equipment requirements and procurement preferences.

Q: Are 3410.0036.03 and 3-103-118 interchangeable?

A: Yes, for electrical and mechanical function. Both parts have identical 2.5 A, 125 V AC/DC ratings, fast blow response, 50A AC / 300A DC breaking capacity, and matching physical dimensions (0.126" L x 0.061" W x 0.061" H). The 3410.0036.03 offers an extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C). The 3-103-118 carries both cURus and UL approval, while 3410.0036.03 carries cURus approval. Verify approval requirements for your specific application before substitution.

Q: Can I use 3410.0036.03 in applications requiring UL approval?

A: The 3410.0036.03 carries cURus approval but does not list UL approval in the provided specifications. If your application requires UL-approved components, use 3-103-118 or 3-103-119, both of which carry cURus and UL approval. Consult your design requirements and regulatory documentation to confirm approval necessity.

Q: What does the extended operating temperature range of 3410.0036.03 and 3410.0035.03 mean?

A: Both upgrade parts operate across -55°C ~ 150°C, compared to -55°C ~ 125°C for the 3-103-118. This extended upper temperature limit allows these parts to function reliably in higher ambient temperature environments. If your application operates above 125°C, the upgrade parts provide additional thermal margin. If your application operates within -55°C ~ 125°C, both original and upgrade parts are suitable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 3-103-118, 3410.0036.03, 3410.0035.03, and 3-103-119 are all ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for electronic component manufacturing and use.