GDA-2.5A Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GDA-2.5A is a ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 2.5 A at 250 V AC/DC with fast-blow response characteristics. This component is designed for use in applications requiring overcurrent protection in electrical circuits. The fuse operates in a 5mm x 20mm form factor and requires a dedicated holder for installation.

The GDA-2.5A maintains Active product status with 1028 pieces in current inventory. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and functional performance parameters. Alternative sources provide equivalent protection characteristics with varying compliance certifications and availability levels.

Substiute Parts

GDA-2.5A

Eaton - Electronics DivisionIn Stock: 1048GDA-2.5A Datasheet

Current PartRFQ

BK/GDA-2.5A

Eaton - Electronics DivisionIn Stock: 1233BK/GDA-2.5A Datasheet

Parametric EquivalentRFQ

BK/S501-2.5-R

Eaton - Electronics DivisionIn Stock: 1668BK/S501-2.5-R Datasheet

Parametric EquivalentRFQ

S501-2.5-R

Eaton - Electronics DivisionIn Stock: 768S501-2.5-R Datasheet

Parametric EquivalentRFQ

0001.1008

SCHURTER Inc.In Stock: 19850001.1008 Datasheet

Parametric EquivalentRFQ

021602.5HXP

Littelfuse Inc.In Stock: 944021602.5HXP Datasheet

Parametric EquivalentRFQ

021602.5MXP

Littelfuse Inc.In Stock: 4061021602.5MXP Datasheet

Parametric EquivalentRFQ

FCC-2.5A

OptiFuseIn Stock: 1378FCC-2.5A Datasheet

Parametric EquivalentRFQ

FCD-2.5A

OptiFuseIn Stock: 6944FCD-2.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GDA-2.5A is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)

Secondary Compatibility Factors:

• Mounting Type: Requires Holder (all substitutes use identical mounting)
• Physical Dimensions: 0.205" Dia x 0.787" L (all substitutes conform to this specification)

All identified substitute parts meet these criteria without exception. Variations in melting I²t values, DC cold resistance, operating temperature ranges, and approval agencies do not disqualify substitution eligibility when primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Eaton GDA Series (BK/GDA-2.5A, BK/S501-2.5-R, S501-2.5-R): These parts maintain direct manufacturer equivalence with the primary GDA-2.5A component. All three variants are manufactured by Eaton - Electronics Division and carry Active product status. The BK/GDA-2.5A and BK/S501-2.5-R variants include RoHS3 compliance certification. The S501-2.5-R variant also carries RoHS3 compliance. Approval agencies include CCC, CSA, IMQ, SEMKO, and UL/cULus certifications. Inventory availability ranges from 752 to 1615 pieces.

SCHURTER 0001.1008: This substitute from SCHURTER Inc. operates within the SP 5x20 series and meets all primary electrical and mechanical specifications. The component carries RoHS3 compliance and REACH Unaffected status. Approval agencies include CCC, cURus, KC, PSE/JET, and VDE. Operating temperature range extends from -55°C to 125°C. Current inventory stands at 1961 pieces.

Littelfuse 216 Series (021602.5HXP, 021602.5MXP): Both Littelfuse variants from the 216 series provide full parametric equivalence. The 021602.5MXP variant offers the highest inventory availability at 4022 pieces. Both parts carry RoHS3 compliance and REACH Unaffected status. Approval agencies include CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE. Operating temperature range extends from -55°C to 125°C.

OptiFuse FCD-2.5A: The FCD-2.5A from OptiFuse meets all primary specifications and offers the highest inventory level at 6906 pieces. This variant includes explicit 250 V DC voltage rating specification. RoHS3 compliance and REACH Unaffected status are confirmed. Approval agency certification includes IEC 60127. Operating temperature range is -55°C to 125°C.

OptiFuse FCC-2.5A: The FCC-2.5A variant meets primary electrical specifications but carries a reduced breaking capacity of 100 A at rated voltage, compared to the standard 1.5 kA specification. This part includes cULus and UL 248 certifications with RoHS3 compliance. Operating temperature range is -55°C to 125°C. Selection of this variant requires verification that the reduced breaking capacity is acceptable for the intended application circuit.

Frequently Asked Questions (FAQ)

Q: Can I substitute the GDA-2.5A with any of the listed equivalent parts without circuit modification?

A: All listed substitute parts except FCC-2.5A maintain identical breaking capacity specifications (1.5 kA) and meet the primary electrical and mechanical requirements. The FCC-2.5A carries a reduced breaking capacity of 100 A and requires application-specific verification before substitution. No circuit modifications are required for compatible substitutes when breaking capacity requirements are met.

Q: What is the significance of the melting I²t value differences between substitute parts?

A: Melting I²t values indicate the thermal energy required to melt the fuse element. Variations in this parameter (ranging from 1.995 to 3.9 across the substitute list) reflect different fuse element designs and materials while maintaining identical current and voltage ratings. These differences do not disqualify substitution when all primary electrical specifications match.

Q: Are all substitute parts compatible with the same fuse holder as the GDA-2.5A?

A: Yes. All substitute parts conform to the 5mm x 20mm package specification and require identical holder types. Physical dimensions are standardized at 0.205" diameter by 0.787" length across all listed substitutes.

Q: Which substitute offers the best compliance certification coverage?

A: The Littelfuse 021602.5MXP variant carries the broadest approval agency coverage, including CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE certifications. This part also maintains the highest inventory availability at 4022 pieces.

Q: What is the difference between the Eaton GDA and S501 series variants?

A: Both series are manufactured by Eaton - Electronics Division and meet identical electrical and mechanical specifications. The S501 series variants (BK/S501-2.5-R and S501-2.5-R) carry expanded approval agency certifications including BSI, MITI/JET, and VDE in addition to standard certifications. Series designation reflects internal Eaton product line organization without affecting functional equivalence.

Q: Can I use the OptiFuse FCD-2.5A in applications requiring 250 V DC operation?

A: Yes. The FCD-2.5A explicitly specifies 250 V DC voltage rating in addition to 250 V AC, making it suitable for DC circuit applications. Other substitutes specify AC voltage rating only and should be verified for DC application suitability through manufacturer documentation.

Q: What inventory considerations should guide substitute selection?

A: The OptiFuse FCD-2.5A offers the highest current availability at 6906 pieces. The Littelfuse 021602.5MXP provides 4022 pieces. For immediate availability requirements, these two options present the strongest supply positions. All listed substitutes maintain Active product status with minimum inventory levels of 752 pieces.