GMA-100MA Equivalent & Substitute Parts

Part Overview

The GMA-100MA is a 100 mA 250 V AC DC glass fuse cartridge in 5mm x 20mm form factor manufactured by Eaton - Electronics Division. This fast-blow fuse cartridge requires a compatible holder for installation and is designed for general-purpose circuit protection applications. The part is active in production with 795 pieces in current inventory stock. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, fuse type, and response characteristics to ensure direct functional interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	100 mA
Voltage Rating - AC	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Fast Blow
Breaking Capacity @ Rated Voltage	35A
Mounting Type	Requires Holder

Substitute Part Grouping Explanation

Substitute parts for the GMA-100MA are grouped based on strict equivalence of the following parameters: current rating (100 mA), voltage rating (250 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm), response time (fast blow), and breaking capacity (35A). All substitute parts maintain identical electrical and mechanical specifications, ensuring direct replacement capability without circuit modification. Substitutes are sourced from Eaton - Electronics Division, SCHURTER Inc., and Littelfuse Inc., all established manufacturers of fuse cartridges meeting international standards.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (Amps)	Voltage Rating - AC	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Fuse Type	Mounting Type	Product Status	Inventory (Pcs)
GMA-100MA	Eaton - Electronics Division	GMA	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	795
GMA-100-R	Eaton - Electronics Division	GMA	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	1029
BK/GDB-100MA	Eaton - Electronics Division	GDB	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	947
BK/GMA-100-R	Eaton - Electronics Division	GMA	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	1321
BK/S500-100-R	Eaton - Electronics Division	S500	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	1043
BK1/S500-100-R	Eaton - Electronics Division	S500	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	1825
GDB-100MA	Eaton - Electronics Division	GDB	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	851
S500-100-R	Eaton - Electronics Division	S500	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	783
0034.1506	SCHURTER Inc.	FSF 5x20	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	888
0034.1506.G	SCHURTER Inc.	FSF 5x20	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	852
0217.100HXP	Littelfuse Inc.	217	100 mA	250 V	Fast Blow	5mm x 20mm	35A	Cartridge, Glass	Requires Holder	Active	3017

Engineering Selection Recommendations

All listed substitute parts are active products with direct electrical and mechanical equivalence to the GMA-100MA. Selection among substitutes is based on availability, certification requirements, and supply chain considerations.

Eaton - Electronics Division substitutes (GMA-100-R, BK/GMA-100-R, BK/GDB-100MA, GDB-100MA, BK/S500-100-R, BK1/S500-100-R, S500-100-R) maintain full compatibility with the original GMA-100MA specification. Parts bearing CSA, PSE, and UL certifications (GMA-100-R, BK/GMA-100-R) are suitable for applications requiring these specific approvals.

SCHURTER Inc. substitutes (0034.1506, 0034.1506.G) provide alternatives with extended operating temperature range (-55°C to 125°C) and multiple international certifications including CCC, cURus, VDE, and CE. The 0034.1506.G variant includes additional UKCA certification.

Littelfuse Inc. substitute (0217.100HXP) offers the highest inventory availability (3017 pieces) with comprehensive international certifications including CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE, plus extended operating temperature range (-55°C to 125°C).

Frequently Asked Questions (FAQ)

Q: Can GMA-100MA be directly replaced with any of the listed substitutes?

A: Yes. All listed substitutes share identical current rating (100 mA), voltage rating (250 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm), response time (fast blow), and breaking capacity (35A). Direct replacement is possible without circuit modification.

Q: What is the difference between GMA-100MA and GMA-100-R?

A: Both parts are from Eaton's GMA series with identical electrical and mechanical specifications. GMA-100-R is packaged in bulk format and carries CSA, PSE, and UL certifications. Both are active products suitable for direct substitution.

Q: Are there differences in melting I²t values among substitutes?

A: Yes. Melting I²t values vary among substitutes (ranging from 0.0001 to 0.0045), reflecting different thermal characteristics. However, all parts maintain the same 100 mA current rating and 35A breaking capacity. Selection based on I²t should align with specific circuit protection requirements.

Q: Which substitute offers the widest operating temperature range?

A: SCHURTER Inc. parts (0034.1506, 0034.1506.G) and Littelfuse Inc. part (0217.100HXP) operate across -55°C to 125°C. Eaton parts do not specify operating temperature limits in the provided data.

Q: What certifications should I consider for regulatory compliance?

A: GMA-100-R and BK/GMA-100-R carry CSA, PSE, and UL certifications. SCHURTER 0034.1506.G includes CCC, CE, CSA, cURus, UKCA, UL, and VDE certifications. Littelfuse 0217.100HXP includes CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications. Select based on your application's regulatory requirements.

Q: Is RoHS compliance a differentiator among these parts?

A: Most substitutes are ROHS3 compliant. BK1/S500-100-R and GDB-100MA are RoHS compliant (non-ROHS3). All parts meet RoHS requirements; selection should be based on specific compliance documentation required by your application.

Q: Can I use these fuses without a holder?

A: No. All listed parts, including the GMA-100MA, require a compatible fuse holder for installation. The fuse cartridge alone cannot be used in a circuit.

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