5ET 630-R Equivalent & Substitute Parts

Part Overview

The 5ET 630-R is a 630 mA, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm package format. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The fuse requires a dedicated holder for installation and operates across a temperature range of -55°C to 125°C.

Substiute Parts

5ET 630-R

Bel Fuse Inc.In Stock: 8665ET 630-R Datasheet

Current PartRFQ

5ST 630-R

Bel Fuse Inc.In Stock: 131325ST 630-R Datasheet

Parametric EquivalentRFQ

0218.630HXP

Littelfuse Inc.In Stock: 17750218.630HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5ET 630-R are qualified based on the following critical parameters:

• Current Rating: 630 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed meet these electrical and mechanical parameters, ensuring direct functional equivalence in applications designed for the 5ET 630-R.

Parameter Comparison

Engineering Selection Recommendations

The 5ST 630-R from Bel Fuse Inc. is the primary substitute for the obsolete 5ET 630-R. Both components are manufactured by the same supplier, share identical electrical specifications, and maintain the same physical dimensions. The 5ST 630-R carries active product status with full regulatory approvals including CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE certifications.

The 0218.630HXP from Littelfuse Inc. is a secondary equivalent option. This part meets all critical electrical and mechanical parameters and maintains active product status. It carries broader regulatory approvals including UL and K-MARK certifications in addition to CE, CSA, SEMKO, and VDE. The dimensional tolerance differs slightly (0.205" diameter versus 0.201"), and the DC cold resistance and melting I²t values differ from the Bel Fuse alternatives. These variations remain within acceptable substitution parameters for the specified application category.

Frequently Asked Questions (FAQ)

Q: Can the 5ST 630-R directly replace the 5ET 630-R?

A: Yes. The 5ST 630-R meets all electrical and mechanical requirements of the 5ET 630-R, including current rating, voltage rating, fuse type, response time, package dimensions, and operating temperature range. Both are manufactured by Bel Fuse Inc. and are ROHS3 compliant.

Q: What is the difference between the Bel Fuse and Littelfuse substitutes?

A: Both the 5ST 630-R and 0218.630HXP meet the core electrical specifications. The 0218.630HXP has a slightly larger diameter (0.205" versus 0.201"), different DC cold resistance (0.275 Ohms versus 0.22 Ohms), and different melting I²t (4.675 versus 0.9). Verify holder compatibility with the 0.205" diameter specification before selection.

Q: Why is the 5ET 630-R listed as obsolete?

A: The 5ET 630-R is no longer in active production. The 5ST 630-R serves as the current-generation equivalent from the same manufacturer and is recommended for new designs and ongoing inventory replenishment.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 5ST 630-R and 0218.630HXP are both ROHS3 compliant, matching the compliance status of the original 5ET 630-R.

Q: What certifications apply to each substitute?

A: The 5ST 630-R carries CCC, CE, CSA, cURus, IMQ, SEMKO, and VDE approvals. The 0218.630HXP carries CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE approvals. Verify that required certifications for your application are present before final selection.