5STP 63 Equivalent & Substitute Parts Reference

Part Overview

The 5STP 63 is a 63 mA, 250 V AC/DC slow-blow glass cartridge fuse with a 5mm x 20mm axial form factor, manufactured by Bel Fuse Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. Direct replacements maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

5STP 63

Bel Fuse Inc.In Stock: 11605STP 63 Datasheet

Current PartRFQ

5STP 63-R

Bel Fuse Inc.In Stock: 17635STP 63-R Datasheet

DirectRFQ

0034.3105.PT

SCHURTER Inc.In Stock: 13850034.3105.PT Datasheet

DirectRFQ

0218.063MXEP

LittelfuseIn Stock: 12100218.063MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5STP 63 are classified based on equivalence to the following critical parameters: current rating (63 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (35 A). All listed substitutes maintain these specifications, ensuring direct functional compatibility in through-hole applications.

The 5STP 63-R (Bel Fuse Inc.) is a direct manufacturer equivalent with identical electrical characteristics and active product status. The 0034.3105.PT (SCHURTER Inc.) and 0218.063MXEP (Littelfuse) are cross-manufacturer equivalents that satisfy all core electrical and mechanical requirements while offering active product availability and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing maintenance applications, the 5STP 63-R is the primary recommended substitute. It is manufactured by the same supplier as the original part, maintains identical electrical and mechanical specifications, and carries active product status with ROHS3 compliance and expanded approval certifications (CCC, CE, CSA, cULus, IMQ, SEMKO, VDE).

The 0034.3105.PT (SCHURTER Inc., FST 5x20 series) and 0218.063MXEP (Littelfuse, 218 series) are functionally equivalent cross-manufacturer alternatives. Both are active products with ROHS3 compliance. The 0034.3105.PT carries cURus certification, while the 0218.063MXEP provides broader approval coverage (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE). Selection between these alternatives should be based on supply chain availability, existing supplier relationships, and specific certification requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 63-R be used as a direct replacement for the 5STP 63?

A: Yes. The 5STP 63-R maintains identical current rating (63 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (35 A). It is electrically and mechanically interchangeable.

Q: What are the key differences between the substitute parts?

A: All substitutes meet the core electrical and mechanical requirements. Differences exist in manufacturer, approval certifications, and minor dimensional variations. The 0034.3105.PT has a slightly different diameter (5.40mm vs. 5.50mm) and length (22.50mm vs. 21.00mm). The 0218.063MXEP has a larger diameter (6.00mm) and matching length (22.50mm). These dimensional variations remain within acceptable tolerances for standard 5mm x 20mm fuse holders.

Q: Are all substitutes RoHS compliant?

A: The original 5STP 63 is RoHS non-compliant. All three substitute parts (5STP 63-R, 0034.3105.PT, and 0218.063MXEP) are ROHS3 compliant, making them suitable for applications with RoHS requirements.

Q: Which substitute offers the broadest certification coverage?

A: The 0218.063MXEP (Littelfuse) provides the most comprehensive approval certifications: CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE. The 5STP 63-R includes CCC, CE, CSA, cULus, IMQ, SEMKO, and VDE. The 0034.3105.PT carries cURus certification.

Q: Are there any compatibility concerns with fuse holder mounting?

A: All substitutes use the same 5mm x 20mm axial through-hole package format. Minor dimensional variations (diameter and length) exist but remain within standard fuse holder tolerances. Verify holder specifications if dimensional precision is critical for the application.