3SBP 5-R Equivalent & Substitute Parts

Part Overview

The 3SBP 5-R is a 5 A 250 V AC/DC slow-blow glass cartridge fuse manufactured by Bel Fuse Inc. in the 3AB/3AG package format (1/4" x 1-1/4" axial). This part is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs. Littelfuse Inc. produces four direct equivalents that maintain identical electrical and mechanical specifications while offering active product status and expanded certification coverage.

Substiute Parts

3SBP 5-R

Bel Fuse Inc.In Stock: 16933SBP 5-R Datasheet

Current PartRFQ

0315005.HXP

Littelfuse Inc.In Stock: 11420315005.HXP Datasheet

DirectRFQ

0315005.MXP

Littelfuse Inc.In Stock: 7430315005.MXP Datasheet

DirectRFQ

0315005.MXSLP

Littelfuse Inc.In Stock: 8100315005.MXSLP Datasheet

DirectRFQ

0315005.VXP

Littelfuse Inc.In Stock: 12320315005.VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3SBP 5-R is determined by strict equivalence across the following parameters:

• Current Rating: 5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)

All four Littelfuse substitutes (0315005.VXP, 0315005.HXP, 0315005.MXP, 0315005.MXSLP) meet these criteria and are therefore direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

All four Littelfuse substitutes are functionally equivalent to the 3SBP 5-R and are suitable for direct replacement. Selection among the four options should be based on certification requirements and regional compliance needs:

0315005.VXP: Approved for CE, CSA, KC, PSE, and UL markets. Highest inventory availability (1140 pcs).

0315005.HXP: Approved for CE, CSA, K-MARK, PSE, and UL markets. Suitable for general industrial applications.

0315005.MXP: Approved for CE, CSA, K-MARK, PSE, and UL markets. Inventory: 645 pcs.

0315005.MXSLP: Approved for CE, CSA, KC, METI, and UL markets. Suitable for applications requiring METI certification. Inventory: 714 pcs.

All substitutes are ROHS3 compliant and REACH unaffected, maintaining environmental compliance equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0315005 series parts be used as direct replacements for the 3SBP 5-R?

A: Yes. All four variants (0315005.VXP, 0315005.HXP, 0315005.MXP, 0315005.MXSLP) are direct equivalents. They share identical current rating, voltage rating, response time, fuse type, package format, breaking capacity, and operating temperature range.

Q: What is the difference between the four Littelfuse substitute options?

A: The primary differences are certification approvals and regional compliance. 0315005.VXP includes KC and PSE certifications. 0315005.MXSLP includes KC and METI certifications. 0315005.HXP and 0315005.MXP include K-MARK certification. All are UL and CSA approved.

Q: Are there dimensional differences between the 3SBP 5-R and the Littelfuse substitutes?

A: Dimensional specifications are equivalent. Both the original and all substitutes are specified as 1/4" x 1-1/4" (Axial). Measured dimensions show negligible variation: 3SBP 5-R at 0.272" Dia x 1.280" L versus Littelfuse parts at 0.275" Dia x 1.275" L, which fall within standard manufacturing tolerances for this package type.

Q: Why is the 3SBP 5-R classified as obsolete?

A: Bel Fuse Inc. has discontinued this product line. Littelfuse equivalents provide active product status with ongoing manufacturing support and availability.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All four Littelfuse substitutes maintain ROHS3 compliance, matching the environmental standards of the original 3SBP 5-R.