Littelfuse 0217.630H Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.630H is a 630 mA, 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor, designed for use with fuse holders. This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain circuit protection functionality in applications where the original part is no longer available or where design updates require active product status components.

Key Parameters

Parameter	Value
Current Rating	630 mA
Voltage Rating (AC)	250 V
Response Time	Fast Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Glass
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C

Substitute Part Grouping Explanation

Substitution for the 0217.630H is determined by strict equivalence across the following parameters:

Current Rating: 630 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Mounting Type: Requires Holder (exact match required)
Breaking Capacity: 35A (exact match required)

All substitute parts listed meet these criteria. Differences in melting I²t values, DC cold resistance, and approval agencies do not disqualify substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating	Voltage (AC)	Response Time	Package	Breaking Capacity	Melting I²t	DC Cold Resistance	Product Status
0217.630H	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.409	0.19 Ω	Obsolete
0217.630HXP	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
0217.630MXBP	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
0217.630MXP	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
0217.630TXP	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
0217.630VXP	Littelfuse Inc.	217	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
0617.630MXP	Littelfuse Inc.	617	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.41	0.19 Ω	Active
BK/GDB-630MA	Eaton - Electronics Division	GDB	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.35	0.2 Ω	Active
5SF 630-R	Bel Fuse Inc.	5SF	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.64	0.152 Ω	Active
BK/S500-630-R	Eaton - Electronics Division	S500	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.35	0.2 Ω	Active
BK1/S500-630-R	Eaton - Electronics Division	S500	630 mA	250 V	Fast Blow	5mm x 20mm	35A	0.35	0.2 Ω	Active

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the 0217.630H. Selection should prioritize parts with active product status:

Littelfuse 0217.630HXP, 0217.630MXBP, 0217.630MXP, 0217.630TXP, and 0217.630VXP are direct Littelfuse alternatives within the same 217 series. The 0617.630MXP represents an alternative Littelfuse series option with identical electrical specifications.

Eaton BK/GDB-630MA, BK/S500-630-R, and BK1/S500-630-R provide cross-manufacturer equivalents with active status and established approval certifications.

Bel Fuse 5SF 630-R offers an alternative manufacturer option with comprehensive international approvals including CCC, CE, CSA, cURus, IMQ, PSE, SEMKO, and VDE.

All substitute parts are RoHS3 compliant or RoHS compliant, supporting modern design requirements. Approval agency coverage varies; applications requiring specific certifications should cross-reference the approval list for each candidate part.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0217.630H with any of the listed parts?

A: Yes. All listed parts meet the core electrical and mechanical requirements: 630 mA current rating, 250 V AC voltage rating, fast-blow response, 5mm x 20mm package, 35A breaking capacity, and cartridge glass fuse type requiring a holder. Physical and electrical compatibility is established.

Q: What is the difference between Littelfuse series 217 and 617?

A: Both series maintain identical electrical and mechanical specifications for the 630 mA, 250 V rating. The series designation reflects internal design or manufacturing differences that do not affect substitution eligibility. The 0617.630MXP is a valid substitute.

Q: Why do melting I²t values differ between parts?

A: Melting I²t represents the thermal energy required to melt the fuse element. Variations (0.35 to 0.64) reflect different internal element designs across manufacturers. All listed parts meet the 35A breaking capacity requirement at rated voltage, confirming functional equivalence for circuit protection.

Q: Are there approval agency differences I should consider?

A: Yes. The original 0217.630H carries CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE approvals. Substitute parts carry varying approval combinations. Applications requiring specific certifications (such as UL for North American markets or CE for European markets) should confirm the substitute part includes the required approval.

Q: What is the difference between bulk and standard packaging?

A: Packaging designation (bulk vs. standard) reflects order quantity and presentation format, not electrical or mechanical specifications. Fuse performance and compatibility remain identical regardless of packaging type.

Q: Can I use the Eaton or Bel Fuse parts in place of Littelfuse?

A: Yes. Cross-manufacturer substitution is valid when all electrical and mechanical parameters match. Eaton BK/GDB-630MA, BK/S500-630-R, BK1/S500-630-R, and Bel Fuse 5SF 630-R all meet the required specifications. Verify approval certifications align with your application requirements.

Q: Is RoHS compliance a substitution factor?

A: RoHS compliance is a regulatory requirement, not a substitution criterion. The original 0217.630H is RoHS non-compliant. All active substitute parts listed are RoHS3 compliant or RoHS compliant, supporting modern environmental standards. This is an advantage for new designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message