GSA 100 Equivalent & Substitute Parts

Part Overview

The GSA 100 is a 100 mA, 250 V AC/DC ceramic cartridge fuse manufactured by Bel Fuse Inc. with a slow-blow response characteristic. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The GSA 100 requires a 3AB or 3AG fuse holder and is housed in a 1/4" x 1-1/4" form factor. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Substiute Parts

GSA 100

Bel Fuse Inc.In Stock: 868GSA 100 Datasheet

Current PartRFQ

0326.100HXP

Littelfuse Inc.In Stock: 11630326.100HXP Datasheet

SimilarRFQ

TCA-100MA

OptiFuseIn Stock: 3628TCA-100MA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the GSA 100 is determined by strict equivalence across the following parameters:

• Current Rating: 100 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Two substitute parts meet these criteria: the 0326.100HXP (Littelfuse Inc.) and the TCA-100MA (OptiFuse). Both components share identical electrical and mechanical specifications with the GSA 100, ensuring direct compatibility in applications requiring this fuse rating and form factor.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing applications, the TCA-100MA (OptiFuse) is the preferred substitute. This part maintains identical electrical and mechanical specifications to the GSA 100 while offering active product status and ROHS3 compliance. The TCA-100MA carries cULus and UL 248 certifications, supporting regulatory requirements across multiple markets.

The 0326.100HXP (Littelfuse Inc.) serves as an alternative substitute with equivalent performance characteristics. This part is also active and ROHS3 compliant. The dimensional tolerance on length (31.75mm vs. 31.80mm) is within acceptable mechanical variation for holder compatibility.

Both substitutes provide superior availability compared to the obsolete GSA 100, with active inventory status ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the TCA-100MA or 0326.100HXP be used directly in place of the GSA 100?

A: Yes. Both substitute parts share identical current rating, voltage rating, fuse type, response time, package designation, and mounting requirements. They are mechanically and electrically compatible with existing GSA 100 fuse holders.

Q: What is the difference between the TCA-100MA and 0326.100HXP?

A: Both parts meet the GSA 100 substitution criteria. The TCA-100MA has a breaking capacity of 35A and melting I²t of 0.21, matching the GSA 100 specification. The 0326.100HXP has a breaking capacity of 100A and melting I²t of 0.087. Selection depends on application-specific breaking capacity requirements.

Q: Are there compliance differences between the substitutes?

A: Both the TCA-100MA and 0326.100HXP are ROHS3 compliant, whereas the GSA 100 is RoHS non-compliant. The TCA-100MA carries cULus and UL 248 certifications. The 0326.100HXP carries CE certification. Regulatory requirements for your application determine which certification profile is necessary.

Q: Will the slight dimensional difference in the 0326.100HXP affect holder compatibility?

A: The 0326.100HXP length of 31.75mm versus the GSA 100 length of 31.80mm represents a 0.05mm variation. This tolerance is within acceptable mechanical limits for 3AB and 3AG fuse holder compatibility.

Q: Why is the GSA 100 obsolete?

A: The GSA 100 is classified as obsolete by the manufacturer. The TCA-100MA and 0326.100HXP are active products from alternative manufacturers, providing equivalent functionality with ongoing supply availability.