SCHURTER 0034.3883 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.3883 is a 4 A 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor. This component is designed for circuit protection in applications requiring reliable overcurrent interruption at rated voltage. The part is active in production with ROHS3 compliance and cULus approval. Equivalent substitute parts are necessary to ensure supply chain continuity, accommodate regional availability, or meet specific application certifications.

Substiute Parts

0034.3883

SCHURTER Inc.In Stock: 12010034.3883 Datasheet

Current PartRFQ

0217004.MXP

Littelfuse Inc.In Stock: 270780217004.MXP Datasheet

SimilarRFQ

5SF 4-R

Bel Fuse Inc.In Stock: 239535SF 4-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.3883 are qualified based on the following critical parameters:

• Current Rating: 4 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Physical Package: 5mm x 20mm (exact match required)
• Mounting Configuration: Requires Holder (exact match required)

The identified substitutes meet all mandatory electrical and mechanical criteria. Variations in breaking capacity, melting I²t, operating temperature range, and approval agencies are secondary parameters that do not prevent functional equivalence within the specified electrical envelope.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and meet the core electrical and mechanical specifications for direct substitution. Selection between the SCHURTER 0034.3883 and its equivalents should be based on:

• Approval Agency Requirements: The SCHURTER part carries cULus approval. The Littelfuse 0217004.MXP supports BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, and VDE certifications. The Bel Fuse 5SF 4-R supports CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE certifications. Verify that the selected substitute meets the specific regulatory requirements of the target application.

• Supply Chain Availability: Littelfuse 0217004.MXP has 27,000 units in stock; Bel Fuse 5SF 4-R has 23,882 units in stock; SCHURTER 0034.3883 has 1,154 units in stock.

• Operating Temperature Range: The SCHURTER part operates from -40°C to 85°C. Both Littelfuse and Bel Fuse substitutes operate from -55°C to 125°C, providing extended temperature capability if required by the application.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0217004.MXP or Bel Fuse 5SF 4-R be used as direct replacements for the SCHURTER 0034.3883?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current rating (4 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), and physical package (5mm x 20mm). All three parts require a fuse holder for installation.

Q: What is the significance of the different breaking capacity values?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The SCHURTER part has 200 A breaking capacity, while both substitutes have 40 A. This difference does not affect substitution eligibility within applications designed for the 4 A / 250 V rating. Verify that the application's fault current does not exceed the breaking capacity of the selected part.

Q: Why do the melting I²t values differ between parts?

A: Melting I²t is a thermal characteristic that affects the precise time-current response. Variations in this parameter reflect manufacturing differences between suppliers but do not prevent functional equivalence for standard circuit protection applications. Both substitutes maintain fast-blow response classification.

Q: Are there physical dimension differences between the parts?

A: The SCHURTER and Littelfuse parts are specified as 0.205" diameter. The Bel Fuse part is specified as 0.201" diameter. All three are rated for 5mm x 20mm package dimensions. These minor variations are within standard tolerance for cartridge fuses and do not affect holder compatibility.

Q: Which part should be selected for extended temperature operation?

A: The Littelfuse 0217004.MXP and Bel Fuse 5SF 4-R both operate from -55°C to 125°C, compared to the SCHURTER part's -40°C to 85°C range. Select either substitute if the application requires operation outside the SCHURTER temperature envelope.

Q: What certifications apply to each part?

A: SCHURTER 0034.3883 carries cULus approval. Littelfuse 0217004.MXP carries BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, and VDE approvals. Bel Fuse 5SF 4-R carries CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE approvals. Confirm that the selected part meets the specific regulatory requirements of your target market or application.