SSQ 10 /5K Equivalent & Substitute Parts

Part Overview

The SSQ 10 /5K is a 10 A, 125 V AC / 86 V DC surface mount board mount fuse manufactured by Bel Fuse Inc. This component is classified as Obsolete, indicating it is no longer in active production. Finding equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this fuse specification is required but original stock becomes unavailable.

Substiute Parts

SSQ 10 /5K

Bel Fuse Inc.In Stock: 995SSQ 10 /5K Datasheet

Current PartRFQ

0679L9100-05

Bel Fuse Inc.In Stock: 14090679L9100-05 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSQ 10 /5K is determined by the following critical parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating - AC: 125 V (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2-SMD, Square End Block (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)

The substitute part 0679L9100-05 meets all mandatory substitution criteria. While the DC voltage rating differs (125 V DC versus 86 V DC), this represents an upgrade in capability and does not prevent substitution in applications requiring the original 86 V DC specification.

Parameter Comparison

Engineering Selection Recommendations

The 0679L9100-05 is the qualified substitute for the SSQ 10 /5K. This recommendation is based on:

• Both components are manufactured by Bel Fuse Inc., ensuring design and quality consistency
• The substitute part is Active in production status, providing long-term availability and supply chain stability
• All critical electrical parameters match: 10 A current rating, 125 V AC voltage rating, Fast Blow response time, and 2-SMD Square End Block package
• The substitute part carries AEC-Q200 and cURus certifications, providing automotive-grade reliability qualification
• The DC voltage rating upgrade (125 V versus 86 V) is compatible with applications designed for the original 86 V specification
• Physical dimensions are nearly identical with a 0.010" (0.25mm) height difference, which is within typical PCB assembly tolerances
• Both components maintain ROHS3 compliance and MSL 1 rating

Frequently Asked Questions (FAQ)

Q: Can the 0679L9100-05 be used as a direct replacement for the SSQ 10 /5K?

A: Yes. The 0679L9100-05 meets all mandatory substitution criteria including current rating, AC voltage rating, mounting type, package configuration, and response time. The higher DC voltage rating (125 V versus 86 V) represents an upgrade and does not prevent substitution.

Q: What is the difference in physical dimensions between these parts?

A: The height dimension differs by 0.010" (0.25mm). The SSQ 10 /5K measures 0.100" H while the 0679L9100-05 measures 0.110" H. Length and width dimensions are identical at 0.240" L x 0.100" W. This minor difference is typically accommodated in standard PCB assembly processes.

Q: Why does the substitute part have a higher DC voltage rating?

A: The 0679L9100-05 is designed with enhanced DC voltage capability (125 V versus 86 V). This upgrade does not affect compatibility with applications requiring the original 86 V DC specification, as the substitute part exceeds the original requirement.

Q: What certifications does the substitute part carry?

A: The 0679L9100-05 carries AEC-Q200 and cURus certifications. The original SSQ 10 /5K carries CE and cULus certifications. Both parts maintain ROHS3 compliance.

Q: Is there a difference in melting I²t between these parts?

A: Yes. The SSQ 10 /5K has a melting I²t of 46, while the 0679L9100-05 has a melting I²t of 25.7. This indicates the substitute part responds faster to overcurrent conditions.

Q: What is the packaging difference?

A: The SSQ 10 /5K is supplied in Cut Tape (CT) & Digi-Reel® packaging. The 0679L9100-05 is supplied in Tape & Reel (TR) packaging. Both are standard surface mount component packaging formats suitable for automated assembly.