Littelfuse 030101.5M Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 030101.5M is a 1.5A glass cartridge fuse rated for 32V AC/DC operation in the 1AG form factor (1/4" x 5/8"). This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and component procurement. The part requires a dedicated fuse holder for installation and is commonly used in low-voltage circuit protection applications.

Substiute Parts

030101.5M

Littelfuse Inc.In Stock: 873030101.5M Datasheet

Current PartRFQ

0AGA01.5V

Littelfuse Inc.In Stock: 11390AGA01.5V Datasheet

Parametric EquivalentRFQ

BK/AGA-1-1/2

Eaton - Electronics DivisionIn Stock: 1141BK/AGA-1-1/2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 030101.5M is determined by the following critical parameters:

• Current Rating: 1.5 A (exact match required)
• Package / Case: 1AG, 1/4" x 5/8" (physical form factor must match holder compatibility)
• Fuse Type: Cartridge, Glass (construction type must remain consistent)
• Mounting Type: Requires Holder (installation method unchanged)

Two substitute parts meet these core criteria. The 0AGA01.5V from Littelfuse Inc. provides a parametric equivalent with identical electrical and mechanical specifications. The BK/AGA-1-1/2 from Eaton - Electronics Division offers a manufacturer-recommended alternative with higher voltage rating capability while maintaining the same current rating and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The 0AGA01.5V from Littelfuse Inc. is the direct parametric equivalent for the obsolete 030101.5M. Both parts share identical electrical ratings (1.5A at 32V AC/DC), physical dimensions, and mechanical specifications. The 0AGA01.5V is currently in active production status with higher inventory availability (1100 pcs vs. 770 pcs), making it the primary replacement for direct substitution applications.

The BK/AGA-1-1/2 from Eaton - Electronics Division is the manufacturer-recommended alternative. While it maintains the same current rating and physical form factor, it features a higher AC voltage rating of 250V, fast-blow response time, and a specified breaking capacity of 35A. This part is suitable for applications where the original 32V rating is adequate and where the enhanced voltage margin and fast-blow characteristics are compatible with circuit requirements.

Both substitute parts are RoHS non-compliant, consistent with the original component. Selection between the two should be based on circuit voltage requirements and response time specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 0AGA01.5V be used as a direct replacement for the 030101.5M?

A: Yes. The 0AGA01.5V is a parametric equivalent with identical current rating (1.5A), voltage rating (32V AC/DC), physical dimensions (1/4" x 5/8"), and form factor (1AG). Both parts require the same holder type and are mechanically and electrically interchangeable.

Q: What is the difference between the 0AGA01.5V and BK/AGA-1-1/2?

A: Both parts share the same current rating (1.5A) and physical form factor (1AG, 1/4" x 5/8"). The primary difference is voltage rating: the 0AGA01.5V matches the original 32V AC/DC specification, while the BK/AGA-1-1/2 is rated for 250V AC. The BK/AGA-1-1/2 also specifies fast-blow response time and 35A breaking capacity, which are not specified for the other parts.

Q: Will these substitute parts fit in the existing fuse holder?

A: Yes. All three parts use the 1AG form factor with identical physical dimensions (0.250" Dia x 0.625" L / 6.35mm x 15.88mm). They are mechanically compatible with any standard 1AG fuse holder.

Q: Are there any compliance differences between the substitute parts?

A: All three parts share the same RoHS non-compliant status. The BK/AGA-1-1/2 carries UL approval, while approval agency information is not specified for the Littelfuse parts.

Q: Which substitute should I select for a new design?

A: For applications requiring the original 32V specification, select the 0AGA01.5V. For applications where higher voltage margin is beneficial and fast-blow response is acceptable, the BK/AGA-1-1/2 is suitable. Both parts are in active production with adequate inventory availability.