Equivalent & Substitute Parts for 0680H0750-05

Part Overview

The 0680H0750-05 is a 750 mA, 125 V AC/DC surface mount board mount fuse manufactured by Bel Fuse Inc. This slow blow fuse is designed for circuit protection in applications requiring 2-SMD, square end block packaging. The part is currently active in production with 4815 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative certifications are required for specific markets, or when design requirements necessitate different electrical characteristics within the same functional category. The substitute parts listed maintain the core electrical ratings while offering variations in breaking capacity, melting I²t characteristics, and regulatory approvals.

Substiute Parts

0680H0750-05

Bel Fuse Inc.In Stock: 48610680H0750-05 Datasheet

Current PartRFQ

0680L0750-01

Bel Fuse Inc.In Stock: 29630680L0750-01 Datasheet

Parametric EquivalentRFQ

0680L0750-05

Bel Fuse Inc.In Stock: 709830680L0750-05 Datasheet

Parametric EquivalentRFQ

SST 750

Bel Fuse Inc.In Stock: 1959SST 750 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0680H0750-05 is determined by the following mandatory parameters:

Core Electrical Compatibility:

• Current Rating: 750 mA (exact match required)
• Voltage Rating AC: 125 V (exact match required)
• Voltage Rating DC: 125 V (exact match required)
• Response Time: Slow Blow (exact match required)

Physical Compatibility:

• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2-SMD, Square End Block (exact match required)
• Size / Dimension: 0.240" L x 0.100" W x 0.100" H (exact match required)

Environmental Compatibility:

• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All substitute parts listed meet these mandatory criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and regulatory approvals do not prevent substitution but indicate different performance characteristics within the same functional class.

Parameter Comparison

Engineering Selection Recommendations

0680L0750-05 (Recommended Primary Substitute)

The 0680L0750-05 is the preferred substitute for the 0680H0750-05. Both parts are active products with identical electrical ratings, physical dimensions, and environmental specifications. The 0680L0750-05 offers higher inventory availability (70901 units) and includes additional regulatory approvals (AEC-Q200, CE, cURus). The differences in breaking capacity (50A AC/100A DC versus 100A AC/500A DC) and melting I²t (0.62 versus 0.28) reflect different internal construction but do not affect functional compatibility in standard circuit protection applications.

0680L0750-01 (Secondary Substitute)

The 0680L0750-01 is functionally equivalent to the 0680H0750-05 with identical electrical and physical specifications. This part is active and carries the same regulatory approvals as the 0680L0750-05. Lower inventory (2923 units) may affect availability. Selection between 0680L0750-01 and 0680L0750-05 should be based on supply chain requirements.

SST 750 (Legacy Substitute)

The SST 750 is an obsolete product from Bel Fuse Inc. and should not be selected for new designs or long-term production applications. While electrically and physically compatible, its obsolete status and limited remaining inventory (1884 units) make it unsuitable for ongoing component sourcing. This part is listed for reference only in legacy system support scenarios.

Frequently Asked Questions (FAQ)

Q: Can the 0680L0750-05 be used as a direct replacement for the 0680H0750-05?

A: Yes. Both parts share identical current ratings (750 mA), voltage ratings (125 V AC/DC), response time (slow blow), mounting type (surface mount), package configuration (2-SMD, square end block), physical dimensions (0.240" L x 0.100" W x 0.100" H), operating temperature range (-55°C ~ 125°C), and RoHS compliance status. The differences in breaking capacity and melting I²t do not prevent direct substitution in standard applications.

Q: What is the difference between the 0680H and 0680L series?

A: The 0680H and 0680L series are both 750 mA, 125 V AC/DC slow blow fuses in identical 2-SMD, square end block packages. The primary differences are breaking capacity (0680H: 100A AC/500A DC; 0680L: 50A AC/100A DC) and melting I²t characteristics (0680H: 0.28; 0680L: 0.62). Both series are manufactured by Bel Fuse Inc. and meet ROHS3 compliance requirements.

Q: Why does the SST 750 show as obsolete?

A: The SST 750 has been discontinued by Bel Fuse Inc. and is no longer in active production. While remaining inventory exists (1884 units), this part should not be specified for new designs or applications requiring long-term component availability. Use 0680L0750-05 or 0680L0750-01 for ongoing production requirements.

Q: Are there packaging differences between substitute parts?

A: Yes. The 0680H0750-05, 0680L0750-01, and 0680L0750-05 are supplied in Tape & Reel (TR) packaging. The SST 750 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging format may affect procurement and assembly processes but does not impact electrical or mechanical compatibility.

Q: What regulatory approvals should I verify for my application?

A: The 0680H0750-05 carries cURus approval. The 0680L0750-05 and 0680L0750-01 carry AEC-Q200, CE, and cURus approvals. The SST 750 carries AEC-Q200, CE, CSA, and cULus approvals. Verify that the selected part's approval agencies meet your specific application and regional requirements.

Q: Can I use these fuses interchangeably in the same circuit board design?

A: Yes, provided the circuit board layout accommodates the identical 2-SMD, square end block package format and 0.240" L x 0.100" W x 0.100" H dimensions. All substitute parts are pin-compatible and require no design modifications for direct substitution.