GDA-100MA Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GDA-100MA is a ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 100 mA at 250 V AC/DC with fast-blow response characteristics. This component requires a fuse holder for installation and is designed for applications requiring overcurrent protection in low-voltage circuits. The part maintains active product status with 948 units in current inventory. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and approval certifications 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, Ceramic
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	1.5 kA
Mounting Type	Requires Holder
DC Cold Resistance	20 Ohms (Eaton); 5.7925 Ohms (Littelfuse)
Melting I²t	0.0018 (Eaton); 0.0045 (Littelfuse)

Substitute Part Grouping Explanation

Substitution eligibility for the GDA-100MA ceramic fuse cartridge is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Current Rating: 100 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Package Dimensions: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Fast Blow (exact match required)
Breaking Capacity: 1.5 kA @ rated voltage (exact match required)
Mounting Configuration: Requires Holder (exact match required)

Secondary Compatibility Factors:

Approval Agencies: CSA, UL, cULus, cURus, CE, VDE, SEMKO, CCC certifications
RoHS Compliance Status: ROHS3 Compliant or equivalent
Operating Temperature Range: -55°C to 125°C (Littelfuse parts) or unspecified (Eaton parts)
DC Cold Resistance and Melting I²t values vary between manufacturers but do not disqualify substitution when primary criteria are met

All substitute parts listed maintain identical electrical and mechanical specifications to the GDA-100MA, ensuring direct interchangeability in circuit protection applications without modification to holder assemblies or circuit design.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (mA)	Voltage Rating (V AC)	Package	Response Time	Breaking Capacity (kA)	Melting I²t	DC Cold Resistance (Ohms)	Approval Agencies	RoHS Status	Inventory (Pcs)
GDA-100MA	Eaton - Electronics Division	100	250	5mm x 20mm	Fast Blow	1.5	0.0018	20	CSA, UR	Not Specified	948
BK/GDA-100MA	Eaton - Electronics Division	100	250	5mm x 20mm	Fast Blow	1.5	0.0018	20	CSA, UL	RoHS Compliant	708
BK/S501-100-R	Eaton - Electronics Division	100	250	5mm x 20mm	Fast Blow	1.5	0.0018	20	CSA, cULus	ROHS3 Compliant	2004
BK1/S501-100-R	Eaton - Electronics Division	100	250	5mm x 20mm	Fast Blow	1.5	0.0018	20	CSA, cULus	ROHS3 Compliant	1809
S501-100-R	Eaton - Electronics Division	100	250	5mm x 20mm	Fast Blow	1.5	0.0018	20	CSA, cURus	ROHS3 Compliant	766
0216.100HXP	Littelfuse Inc.	100	250	5mm x 20mm	Fast Blow	1.5	0.0045	5.7925	CCC, CE, CSA, SEMKO, UR, VDE	ROHS3 Compliant	1033
0216.100MXP	Littelfuse	100	250	5mm x 20mm	Fast Blow	1.5	0.0045	5.7925	CCC, CE, CSA, SEMKO, UR, VDE	ROHS3 Compliant	4444
0216.100TXP	Littelfuse Inc.	100	250	5mm x 20mm	Fast Blow	1.5	0.0045	5.7925	CCC, CE, CSA, SEMKO, UR, VDE	ROHS3 Compliant	931

Engineering Selection Recommendations

Eaton GDA Series (Original Manufacturer): The GDA-100MA, BK/GDA-100MA, and S501 series variants from Eaton - Electronics Division maintain identical electrical and mechanical specifications. Selection among these parts depends on certification requirements and RoHS compliance status. The BK/GDA-100MA and S501 variants carry ROHS3 Compliant status, making them suitable for applications with environmental compliance mandates. All Eaton variants carry CSA certification with UL or cULus/cURus approvals.

Littelfuse 216 Series (Cross-Manufacturer Substitute): The 0216.100HXP, 0216.100MXP, and 0216.100TXP ceramic fuse cartridges from Littelfuse Inc. provide equivalent electrical performance with expanded international certifications including CCC, CE, VDE, and SEMKO in addition to CSA and UR. These parts feature ROHS3 Compliant status and specified operating temperature range of -55°C to 125°C. The Littelfuse variants exhibit different DC cold resistance (5.7925 Ohms versus 20 Ohms) and melting I²t values (0.0045 versus 0.0018), which remain within acceptable substitution parameters for ceramic cartridge fuses while maintaining identical breaking capacity and response characteristics.

Inventory Availability: The 0216.100MXP (Littelfuse) offers the highest inventory level at 4444 units. The BK/S501-100-R (Eaton) provides 2004 units. Selection based on supply chain requirements and lead time considerations is permissible when electrical specifications are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the GDA-100MA be directly replaced with a Littelfuse 0216.100MXP without circuit modification?

A: Yes. Both parts share identical current rating (100 mA), voltage rating (250 V AC), package dimensions (5mm x 20mm), response time (fast blow), and breaking capacity (1.5 kA). Direct substitution in existing fuse holders is permissible. The difference in DC cold resistance and melting I²t values does not affect functional interchangeability in standard circuit protection applications.

Q: What is the difference between the Eaton GDA-100MA and BK/GDA-100MA?

A: The BK/GDA-100MA variant carries RoHS Compliant certification and UL approval, whereas the GDA-100MA does not specify RoHS status and carries UR approval. Electrical and mechanical specifications are identical. Selection depends on environmental compliance requirements of the end application.

Q: Are all substitute parts certified for the same regulatory standards?

A: No. The Eaton variants carry CSA certification with UL, cULus, or cURus approvals. The Littelfuse variants carry CSA and UR certifications plus additional international approvals (CCC, CE, VDE, SEMKO). Application requirements determine which certification set is necessary.

Q: Can the S501-100-R series replace the GDA-100MA?

A: Yes. The BK/S501-100-R and BK1/S501-100-R variants are direct electrical and mechanical equivalents to the GDA-100MA. All three Eaton S501 variants (BK/S501-100-R, BK1/S501-100-R, S501-100-R) maintain identical specifications and are interchangeable within the same fuse holder assembly.

Q: What is the significance of the different melting I²t values between Eaton and Littelfuse parts?

A: The melting I²t value (0.0018 for Eaton, 0.0045 for Littelfuse) represents the thermal energy required to melt the fuse element. Both values are within the acceptable range for 100 mA ceramic cartridge fuses and do not prevent substitution. The difference reflects manufacturing process variations between suppliers while maintaining identical breaking capacity and response time characteristics.

Q: Which substitute part offers the best availability?

A: The 0216.100MXP from Littelfuse maintains the highest inventory at 4444 units. The BK/S501-100-R from Eaton provides 2004 units. Both parts are suitable for immediate procurement when supply chain optimization is a consideration.

Q: Are operating temperature specifications critical for substitution?

A: The Littelfuse 216 series specifies operating temperature range of -55°C to 125°C. The Eaton variants do not specify operating temperature limits. For applications requiring operation outside standard ambient conditions, the Littelfuse variants provide documented temperature performance. For standard indoor applications, both manufacturer options are equivalent.

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