SCHURTER 0034.7111 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.7111 is a 400 mA, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through hole radial mounting in vertical orientation. This component is classified as Active product status with full cULus approval. Substitute parts are identified when equivalent electrical parameters, mechanical compatibility, and regulatory certifications align with the original specification, enabling direct replacement in circuit designs without functional compromise.

Substiute Parts

0034.7111

SCHURTER Inc.In Stock: 9710034.7111 Datasheet

Current PartRFQ

0034.7211

SCHURTER Inc.In Stock: 10820034.7211 Datasheet

Parametric EquivalentRFQ

37404000410

Littelfuse Inc.In Stock: 92037404000410 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.7111 are classified based on strict electrical and mechanical parameter alignment:

Parametric Equivalent Classification: Parts matching all critical electrical parameters (400 mA current rating, 250 V AC voltage rating, slow blow response) and mechanical specifications (radial can vertical package, through hole mounting, 0.335" diameter x 0.335" height) with identical approval certifications.

Similar Manufacturer Classification: Parts meeting all critical electrical parameters and mounting type but with minor dimensional variations (height tolerance) and alternative approval certifications (CSA addition) that do not compromise functional compatibility.

Key Parameters Determining Substitution:

• Current Rating: 400 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole Radial (exact match required)
• Breaking Capacity: 50 A (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)
• Package Orientation: Vertical (exact match required)

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 0034.7211: Direct parametric equivalent with identical electrical specifications, mechanical dimensions, and cULus approval. This part provides full interchangeability with the original 0034.7111 specification. Selection is appropriate for applications requiring exact dimensional and electrical matching.

Littelfuse 37404000410: Functionally compatible substitute with matching electrical parameters (400 mA, 250 V, slow blow) and identical breaking capacity. This part features a 0.315" height dimension (8.00mm) compared to the 0.335" height (8.50mm) of the original, representing a 0.020" reduction. Both parts maintain cULus approval with additional CSA certification. The lower melting I²t value (0.32 versus 0.528) indicates faster thermal response characteristics. Selection is appropriate for applications where dimensional height tolerance permits the reduced profile and where the alternative thermal response is acceptable.

All substitute parts maintain Active product status and full regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 0034.7211 be used as a direct replacement for SCHURTER 0034.7111?

A: Yes. The 0034.7211 is a parametric equivalent with identical current rating (400 mA), voltage rating (250 V AC), response time (slow blow), breaking capacity (50 A), melting I²t (0.528), dimensions (0.335" Dia x 0.335" H), and cULus approval. No design modifications are required.

Q: What is the primary difference between SCHURTER 0034.7111 and Littelfuse 37404000410?

A: The Littelfuse part has a reduced height dimension of 0.315" (8.00mm) versus 0.335" (8.50mm) and a lower melting I²t value of 0.32 versus 0.528. All electrical parameters (current, voltage, response time, breaking capacity) remain identical. The Littelfuse part carries both CSA and cULus approvals.

Q: Are there dimensional constraints when substituting with Littelfuse 37404000410?

A: Yes. The 0.020" height reduction (from 8.50mm to 8.00mm) must be verified against PCB layout and component clearance requirements. Vertical mounting orientation is maintained across all parts.

Q: Do all substitute parts meet the same regulatory requirements?

A: All three parts are ROHS3 compliant, REACH Unaffected, and carry cULus approval. The Littelfuse 37404000410 includes additional CSA certification. All parts are classified as Active product status.

Q: What is the significance of the melting I²t parameter difference?

A: Melting I²t (0.528 for SCHURTER parts versus 0.32 for Littelfuse) indicates the thermal energy required to melt the fuse element. The lower value in the Littelfuse part represents faster thermal response to overcurrent conditions. Selection depends on circuit protection requirements and thermal design specifications.

Q: Can these parts be used interchangeably in all applications?

A: SCHURTER 0034.7111 and 0034.7211 are fully interchangeable. Littelfuse 37404000410 is functionally compatible but requires verification of dimensional height tolerance and thermal response characteristics for the specific application.