3SBP 1.5 Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Bel Fuse Inc. 3SBP 1.5 is a 1.5 A, 250 V AC/DC slow-blow glass cartridge fuse in 3AB/3AG package format with axial through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct compatibility in existing circuit designs.

Substiute Parts

3SBP1.5

Bel Fuse Inc.In Stock: 8483SBP1.5 Datasheet

Current PartRFQ

3SBP 1.5-R

Bel Fuse Inc.In Stock: 10983SBP 1.5-R Datasheet

DirectRFQ

031501.5HXP

Littelfuse Inc.In Stock: 1010031501.5HXP Datasheet

DirectRFQ

031501.5MXP

Littelfuse Inc.In Stock: 1976031501.5MXP Datasheet

DirectRFQ

031501.5VXP

Littelfuse Inc.In Stock: 1019031501.5VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3SBP 1.5 is determined by the following mandatory parameters:

• Current Rating: 1.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Size / Dimension: 0.272" Dia x 1.280" L (6.90mm x 32.50mm) (exact match required)

All substitute parts listed below meet these criteria and are therefore electrically and mechanically interchangeable with the original 3SBP 1.5 component.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete 3SBP 1.5, the following selection criteria apply:

Active Product Status Priority: The Littelfuse 031501.5HXP, 031501.5VXP, and 031501.5MXP parts are classified as active products and are the preferred substitutes. These components provide long-term availability and ongoing manufacturer support.

RoHS3 Compliance: All Littelfuse substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements. The 3SBP 1.5-R from Bel Fuse Inc. also provides ROHS3 compliance as an intermediate option.

Approval Certifications: All substitute parts maintain CE, CSA, and PSE certifications. The Littelfuse parts retain UL approval identical to the original 3SBP 1.5. The 3SBP 1.5-R includes cULus certification.

Dimensional Tolerance: The Littelfuse substitutes exhibit minor dimensional variations (0.275" Dia x 1.275" L versus 0.272" Dia x 1.280" L) within standard mechanical tolerances for 3AB/3AG cartridge fuses and do not affect circuit board mounting or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 031501.5HXP, 031501.5VXP, and 031501.5MXP parts be used interchangeably with the original 3SBP 1.5?

A: Yes. All three Littelfuse parts meet the mandatory electrical and mechanical parameters: 1.5 A current rating, 250 V AC voltage rating, slow-blow response, 3AB/3AG package format, and through-hole mounting. Minor dimensional variations fall within standard cartridge fuse tolerances and do not affect circuit compatibility.

Q: What is the difference between the Littelfuse 031501.5HXP, 031501.5VXP, and 031501.5MXP parts?

A: These three Littelfuse parts are electrically and mechanically identical. All share the same current rating, voltage rating, response time, package format, and approval certifications. Selection between them is based on inventory availability and packaging preferences.

Q: Is the 3SBP 1.5-R a suitable substitute?

A: The 3SBP 1.5-R is electrically and mechanically compatible with the original 3SBP 1.5 and maintains identical dimensions and electrical specifications. However, it is also classified as obsolete. For new designs and long-term availability, the active Littelfuse parts are the preferred choice.

Q: Are there any compliance differences between the original 3SBP 1.5 and the substitute parts?

A: The original 3SBP 1.5 is RoHS non-compliant. All substitute parts, including the 3SBP 1.5-R and the three Littelfuse options, are ROHS3 compliant. All parts maintain CE, CSA, and PSE certifications. The Littelfuse parts retain UL approval.

Q: Do the dimensional differences between the original and Littelfuse substitutes affect mounting?

A: No. The dimensional variations (0.003" diameter difference and 0.005" length difference) are within standard mechanical tolerances for 3AB/3AG cartridge fuses and do not affect circuit board mounting, holder compatibility, or electrical performance.