SCHURTER 3404.0046.22 Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 3404.0046.22 is a 750 mA, 125 V AC/DC surface mount board fuse in the OMF 125 series. This component is an active product with cURus approval, designed for fast-blow protection in surface mount applications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for this fuse category.

Substiute Parts

3404.0046.22

SCHURTER Inc.In Stock: 7853404.0046.22 Datasheet

Current PartRFQ

3404.0046.11

SCHURTER Inc.In Stock: 16503404.0046.11 Datasheet

SimilarRFQ

0451.750MRL

Littelfuse Inc.In Stock: 552290451.750MRL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 3404.0046.22 is determined by the following electrical and mechanical parameters:

• Current Rating: 750 mA (exact match required)
• 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)
• Fuse Type: Board Mount, Cartridge Style Excluded (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

Two substitute parts meet these criteria: SCHURTER 3404.0046.11 (same manufacturer, bulk packaging) and Littelfuse 0451.750MRL (alternative manufacturer, tape & reel packaging). Both parts satisfy the electrical and mechanical requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with current regulatory compliance (ROHS3 Compliant, REACH Unaffected). Selection between the SCHURTER 3404.0046.22 and its substitutes depends on packaging requirements and approval agency preferences:

• SCHURTER 3404.0046.11 is functionally identical to the main part, differing only in packaging format (bulk versus tape & reel). Both carry cURus approval and identical electrical specifications.

• Littelfuse 0451.750MRL meets all electrical and mechanical substitution criteria. It carries CSA and UL approvals and is available in significantly higher inventory quantities. The package case style differs (Square End Block versus J-Lead), and breaking capacity and melting I²t values differ from the SCHURTER parts. These differences do not affect substitution eligibility based on the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 3404.0046.11 be used as a direct replacement for SCHURTER 3404.0046.22?

A: Yes. Both parts are identical in electrical specifications, response time, voltage rating, current rating, and operating temperature range. The only difference is packaging format: 3404.0046.22 is supplied in tape & reel, while 3404.0046.11 is supplied in bulk. Both carry cURus approval.

Q: Is the Littelfuse 0451.750MRL a suitable substitute?

A: Yes. The Littelfuse 0451.750MRL meets all electrical and mechanical substitution criteria: 750 mA current rating, 125 V AC/DC voltage rating, fast-blow response, surface mount configuration, and -55°C to 125°C operating temperature range. The package case style is different (Square End Block instead of J-Lead), and breaking capacity and melting I²t values differ. These differences do not prevent substitution based on the specified parameters.

Q: What is the difference between J-Lead and Square End Block package styles?

A: J-Lead and Square End Block are different mechanical package configurations for surface mount fuses. The choice between them depends on PCB footprint design and assembly equipment compatibility. Both are 2-SMD surface mount packages suitable for automated assembly.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which part has the highest inventory availability?

A: Littelfuse 0451.750MRL has the highest inventory with 55,200 pieces in stock, compared to 1,581 pieces for SCHURTER 3404.0046.11 and 686 pieces for SCHURTER 3404.0046.22.