GDA-500MA Equivalent & Substitute Parts

Part Overview

The GDA-500MA is a 500 mA ceramic fuse cartridge rated for 250 V AC/DC operation in a 5mm x 20mm package form factor. Manufactured by Eaton - Electronics Division, this fast-blow fuse cartridge requires a compatible holder for installation and is classified as an active product. Alternative equivalent parts become necessary when the primary part number experiences supply constraints, when specific compliance certifications are required for regional applications, or when design requirements necessitate different thermal or electrical characteristics within the same functional category.

Key Parameters

Parameter	Value
Current Rating	500 mA
Voltage Rating - AC	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	1.5 kA
Mounting Type	Requires Holder
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the GDA-500MA is determined by strict equivalence across the following critical parameters: current rating of 500 mA, AC voltage rating of 250 V, ceramic cartridge fuse type, fast-blow response characteristic, 5mm x 20mm physical package dimensions, and 1.5 kA breaking capacity at rated voltage. All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional interchangeability within applications designed for the GDA-500MA. Variations in secondary parameters such as melting I²t values, DC cold resistance, operating temperature ranges, and approval agency certifications do not preclude substitution but reflect manufacturer-specific design implementations and regional compliance requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (Amps)	Voltage Rating - AC	Fuse Type	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Product Status
GDA-500MA	Eaton - Electronics Division	GDA	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
BK/GDA-500MA	Eaton - Electronics Division	GDA	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
BK/S501-500-R	Eaton - Electronics Division	S501	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
S501-500-R	Eaton - Electronics Division	S501	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
0001.1001	SCHURTER Inc.	SP 5x20	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
0216.500HXP	Littelfuse Inc.	216	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
0216.500MXP	Littelfuse Inc.	216	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active
FCD-500MA	OptiFuse	FCD	500 mA	250 V	Cartridge, Ceramic	Fast Blow	5mm x 20mm	1.5 kA	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and satisfy the core electrical and mechanical requirements for direct replacement of the GDA-500MA. Selection among equivalent parts should be based on compliance certification requirements specific to the target application region. The GDA-500MA carries CCC, CSA, IMQ, SEMKO, and UR approvals. Eaton S501 series parts (BK/S501-500-R and S501-500-R) provide expanded certification coverage including BSI, cULus, and VDE, suitable for applications requiring broader international compliance. SCHURTER 0001.1001 offers cURus and KC certifications with an extended operating temperature range of -55°C to 125°C. Littelfuse 216 series parts (0216.500HXP and 0216.500MXP) provide CE and VDE certifications with equivalent temperature range specifications. OptiFuse FCD-500MA conforms to IEC 60127 standards and supports both 250 V AC and 250 V DC voltage ratings. All substitute parts are RoHS3 compliant and carry REACH Unaffected or Not Applicable status where specified.

Frequently Asked Questions (FAQ)

Q: Can the GDA-500MA be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts are parametric equivalents sharing identical current rating (500 mA), AC voltage rating (250 V), fuse type (ceramic cartridge), response time (fast-blow), package dimensions (5mm x 20mm), and breaking capacity (1.5 kA). Physical and electrical interchangeability is confirmed across all substitutes.

Q: What is the significance of different melting I²t values among the substitute parts?

A: Melting I²t represents the thermal energy required to melt the fuse element and is a manufacturer-specific characteristic reflecting internal design differences. The GDA-500MA specifies 0.038, while substitutes range from 0.0309 (OptiFuse FCD-500MA) to 0.165 (Littelfuse 216 series). These variations do not affect substitution eligibility but reflect different internal construction and thermal response profiles within the same fast-blow classification.

Q: Are there voltage rating differences between the main part and substitutes?

A: The GDA-500MA is rated for 250 V AC. OptiFuse FCD-500MA additionally specifies 250 V DC rating. All other substitutes maintain 250 V AC specification. For applications requiring DC voltage protection, FCD-500MA provides explicit dual-voltage certification.

Q: What approval agencies should I consider for regional compliance?

A: The GDA-500MA carries CCC, CSA, IMQ, SEMKO, and UR certifications. For North American applications, CSA and UR certifications are standard. For European markets, VDE and CE certifications are relevant. Eaton S501 series parts include VDE and cULus certifications. Littelfuse 216 series includes CE and VDE. SCHURTER 0001.1001 includes VDE and KC certifications. Verify specific regional requirements before final selection.

Q: Does operating temperature range affect substitution suitability?

A: The GDA-500MA does not specify an operating temperature range. SCHURTER 0001.1001, Littelfuse 0216.500HXP, Littelfuse 0216.500MXP, and OptiFuse FCD-500MA all specify -55°C to 125°C operating range. For applications operating within standard industrial temperature ranges, all parts are suitable. For extreme temperature environments, parts with specified ranges provide documented performance boundaries.

Q: What is the difference between BK/GDA-500MA and GDA-500MA?

A: Both parts are from Eaton - Electronics Division GDA series with identical electrical and mechanical specifications. The BK prefix designation indicates a specific packaging or distribution variant. Both are functionally equivalent for circuit protection applications.

Q: Can I use 0216.500HXP and 0216.500MXP interchangeably?

A: Yes. Both Littelfuse 216 series parts share identical electrical specifications, current rating, voltage rating, package dimensions, and breaking capacity. The designation difference reflects internal manufacturing or certification variants but does not affect functional interchangeability.

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