3SBP 1.6 Equivalent & Substitute Parts

Part Overview

The 3SBP 1.6 is a 1.6 A 250 V AC DC fuse cartridge manufactured by Bel Fuse Inc. in a glass through-hole package (3AB, 3AG format). This slow-blow fuse is designed for circuit protection in applications requiring 1/4" x 1-1/4" axial-mounted cartridge fuses with 100A breaking capacity at rated voltage.

The 3SBP 1.6 carries an obsolete product status. Equivalent substitute parts from Littelfuse Inc. are available as active alternatives that maintain identical electrical and mechanical specifications, enabling direct replacement in existing designs and new production applications.

Substiute Parts

3SBP 1.6

Bel Fuse Inc.In Stock: 10253SBP 1.6 Datasheet

Current PartRFQ

031501.6HXP

Littelfuse Inc.In Stock: 1225031501.6HXP Datasheet

DirectRFQ

031501.6MXP

Littelfuse Inc.In Stock: 1081031501.6MXP Datasheet

DirectRFQ

031501.6VXP

Littelfuse Inc.In Stock: 970031501.6VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3SBP 1.6 are determined by strict equivalence across the following parameters:

• Current Rating: 1.6 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Approval Agencies: CE, CSA, PSE, UL (exact match required)

All three Littelfuse substitute parts (031501.6HXP, 031501.6MXP, 031501.6VXP) meet these criteria and are classified as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

The 3SBP 1.6 is obsolete and no longer in active production. All three Littelfuse substitute parts (031501.6HXP, 031501.6MXP, 031501.6VXP) are active products with identical electrical and mechanical specifications, making them suitable for direct replacement.

The Littelfuse substitutes provide additional compliance advantages: all three parts are ROHS3 compliant, whereas the original 3SBP 1.6 is RoHS non-compliant. All substitute parts maintain the same international approval certifications (CE, CSA, PSE, UL) required for circuit protection applications.

For new designs and production applications, selection among the three Littelfuse alternatives should be based on packaging availability and inventory requirements, as all three parts are electrically and mechanically equivalent.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 031501.6HXP, 031501.6MXP, or 031501.6VXP be used as direct replacements for the 3SBP 1.6?

A: Yes. All three Littelfuse parts are direct equivalents. They share identical current rating (1.6 A), voltage rating (250 V AC), fuse type (cartridge, glass), package format (3AB, 3AG, 1/4" x 1-1/4" axial), response time (slow blow), breaking capacity (100 A), mounting type (through hole), operating temperature range (-55°C ~ 125°C), and approval certifications (CE, CSA, PSE, UL).

Q: What is the difference between the three Littelfuse substitute parts?

A: The 031501.6HXP, 031501.6MXP, and 031501.6VXP are electrically and mechanically identical. Differences exist only in internal design characteristics (melting I²t and DC cold resistance values) and packaging format (all supplied in bulk). Selection should be based on availability and procurement requirements.

Q: Is the 3SBP 1.6 still available for purchase?

A: The 3SBP 1.6 is classified as obsolete. Littelfuse substitute parts are recommended for all new applications and ongoing production requirements.

Q: Are the Littelfuse substitutes RoHS compliant?

A: Yes. All three Littelfuse substitute parts (031501.6HXP, 031501.6MXP, 031501.6VXP) are ROHS3 compliant, providing improved environmental compliance compared to the original 3SBP 1.6.

Q: Do the substitute parts maintain the same physical dimensions?

A: Yes. All substitute parts use the identical 3AB, 3AG package format with 1/4" x 1-1/4" (axial) dimensions. Physical dimensions are 0.275" Dia x 1.275" L (6.99mm x 32.39mm), which are compatible with existing through-hole mounting applications.