3SBP 1 Equivalent & Substitute Parts

Part Overview

The 3SBP 1 is a 1 A, 250 V AC/DC slow-blow glass cartridge fuse with 3AB/3AG package configuration and through-hole mounting. Manufactured by Bel Fuse Inc., this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying active equivalent parts from alternative suppliers is necessary for ongoing design support and procurement continuity.

Substiute Parts

3SBP 1

Bel Fuse Inc.In Stock: 10233SBP 1 Datasheet

Current PartRFQ

0315001.HXP

Littelfuse Inc.In Stock: 12350315001.HXP Datasheet

DirectRFQ

0315001.MXP

Littelfuse Inc.In Stock: 10160315001.MXP Datasheet

DirectRFQ

0315001.VXP

Littelfuse Inc.In Stock: 11630315001.VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Three direct substitutes are available from Littelfuse Inc., all belonging to the 315 series. Substitution is based on matching the following critical parameters:

• Current Rating: 1 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 35 A
• Operating Temperature Range: -55°C ~ 125°C
• Approval Agencies: CE, CSA, PSE, UL

All three Littelfuse substitutes (0315001.HXP, 0315001.MXP, 0315001.VXP) meet these criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitutes (0315001.HXP, 0315001.MXP, 0315001.VXP) are functionally equivalent to the 3SBP 1 and meet all specified electrical and mechanical parameters. The primary distinction is product status: the original 3SBP 1 is obsolete, while all Littelfuse alternatives are active products with current manufacturing support.

The Littelfuse substitutes offer improved compliance status, with ROHS3 certification compared to the non-compliant original. All substitutes maintain identical electrical ratings, package dimensions, and regulatory approvals (CE, CSA, PSE, UL).

Selection among the three Littelfuse options (0315001.HXP, 0315001.MXP, 0315001.VXP) may be based on packaging preferences and inventory availability, as all three are electrically and mechanically interchangeable.

Frequently Asked Questions (FAQ)

Q: Are the Littelfuse 315 series parts direct replacements for the 3SBP 1?

A: Yes. The 0315001.HXP, 0315001.MXP, and 0315001.VXP all match the critical substitution parameters: 1 A current rating, 250 V AC voltage rating, slow-blow response, 3AB/3AG package configuration, and identical breaking capacity and operating temperature range.

Q: What is the difference between 0315001.HXP, 0315001.MXP, and 0315001.VXP?

A: All three parts are electrically and mechanically identical. They differ only in packaging designation and internal manufacturing variants. All are active products with equivalent availability and compliance status.

Q: Does the RoHS compliance difference affect substitution?

A: The Littelfuse substitutes are ROHS3 compliant, while the original 3SBP 1 is non-compliant. This represents an improvement in environmental compliance and may be required for new designs or updated procurement standards.

Q: Are the physical dimensions identical?

A: The substitutes have dimensions of 0.275" Dia x 1.275" L (6.99mm x 32.39mm), compared to the original 0.272" Dia x 1.280" L (6.90mm x 32.50mm). These variations are within standard manufacturing tolerances for 3AB/3AG package specifications and do not affect mechanical compatibility in through-hole applications.

Q: Do all parts carry the same regulatory approvals?

A: Yes. Both the original 3SBP 1 and all three Littelfuse substitutes carry CE, CSA, PSE, and UL approvals.