Littelfuse 030707.5M Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 030707.5M is a 7.5 A, 32 V AC fast-blow glass cartridge fuse in 7AG form factor (1/4" x 7/8"). This part is classified as obsolete. Equivalent and substitute parts are available from Littelfuse and Eaton - Electronics Division in active product status, offering improved compliance and availability for new designs and replacement applications.

Substiute Parts

030707.5M

Littelfuse Inc.In Stock: 713030707.5M Datasheet

Current PartRFQ

0SFE07.5V

Littelfuse Inc.In Stock: 11900SFE07.5V Datasheet

DirectRFQ

030707.5H

Littelfuse Inc.In Stock: 939030707.5H Datasheet

Parametric EquivalentRFQ

AGW-7-1/2

Eaton - Electronics DivisionIn Stock: 879AGW-7-1/2 Datasheet

Parametric EquivalentRFQ

BK/AGW-7-1/2

Eaton - Electronics DivisionIn Stock: 890BK/AGW-7-1/2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 030707.5M is determined by matching the following electrical and mechanical parameters:

• Current Rating: 7.5 A
• Voltage Rating - AC: 32 V
• Response Time: Fast Blow
• Package / Case: 7AG, 1/4" x 7/8"
• Fuse Type: Cartridge, Glass
• Mounting Type: Requires Holder

All substitute parts listed maintain these core parameters, ensuring functional compatibility in applications designed for the original 030707.5M. Differences in DC voltage rating, RoHS compliance, and resistance characteristics are noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0SFE07.5V is the primary direct substitute. It maintains the SFE series designation, adds explicit 32 V DC rating, achieves ROHS3 compliance, and is in active product status with higher inventory availability (1154 pcs).

Littelfuse 030707.5H is a parametric equivalent offering ROHS3 compliance, UL approval, and active product status. It provides the lowest DC cold resistance (0.0113 Ohms) among all substitutes and maintains the original series designation.

Eaton AGW-7-1/2 and BK/AGW-7-1/2 are parametric equivalents from an alternative manufacturer. Both provide 1 kA breaking capacity and active product status. These parts remain RoHS non-compliant and do not specify DC voltage rating. Selection of these parts is appropriate where manufacturer diversity or specific Eaton supply chain requirements are necessary.

For new designs requiring regulatory compliance, Littelfuse 0SFE07.5V or 030707.5H are preferred due to ROHS3 compliance and active status.

Frequently Asked Questions (FAQ)

Q: Can 0SFE07.5V directly replace 030707.5M? A: Yes. Both parts share identical current rating (7.5 A), AC voltage rating (32 V), response time (fast blow), and package (7AG, 1/4" x 7/8"). The 0SFE07.5V adds explicit DC rating and improved compliance.

Q: What is the difference between 0SFE07.5V and 030707.5H? A: Both are Littelfuse SFE series fuses with identical electrical ratings. The 030707.5H provides UL approval and significantly lower DC cold resistance (0.0113 Ohms vs. unspecified for 0SFE07.5V). Both achieve ROHS3 compliance.

Q: Are Eaton AGW fuses compatible with Littelfuse SFE holders? A: Yes. Both AGW-7-1/2 and BK/AGW-7-1/2 share the 7AG form factor (1/4" x 7/8") and are mechanically compatible with standard 7AG fuse holders. Electrical performance is equivalent at the specified ratings.

Q: Why does 030707.5M show higher DC cold resistance than substitutes? A: The 030707.5M is obsolete and does not specify DC voltage rating. Substitute parts with specified DC ratings (0SFE07.5V, 030707.5H) and alternative manufacturer parts (AGW series) exhibit lower resistance values typical of current manufacturing standards.

Q: Which substitute should be selected for RoHS-compliant applications? A: Littelfuse 0SFE07.5V and 030707.5H both achieve ROHS3 compliance. The 030707.5H additionally carries UL approval. Eaton AGW series parts remain RoHS non-compliant.

Q: Is there a difference in breaking capacity between substitutes? A: Eaton AGW-7-1/2 and BK/AGW-7-1/2 specify 1 kA breaking capacity. Littelfuse 0SFE07.5V and 030707.5H do not specify breaking capacity in the provided data. For applications requiring specified breaking capacity, Eaton parts are appropriate.