GDC-2A Equivalent & Substitute Parts Reference

Part Overview

The GDC-2A is a 2 A, 250 V AC/DC slow blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 5mm x 20mm holder applications and provides circuit protection with a breaking capacity of 35 A at rated voltage. The part is currently active in production with 1057 pieces in stock. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and approval certifications to ensure direct interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35 A
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the GDC-2A are classified based on strict equivalence of the following parameters: current rating (2 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), and mechanical package (5mm x 20mm). All substitute parts maintain these core electrical and mechanical specifications to ensure direct functional interchangeability.

Parametric equivalents from Eaton - Electronics Division (BK/GDC-2A, BK/GMD-2-R, BK/S506-2-R, S506-2-R) share identical or superior electrical characteristics with the main part. Direct manufacturer equivalents from Littelfuse Inc. (0213002.MXP) and SCHURTER Inc. (0034.3120, 0034.3779, 0034.5046, 0034.5620.11, 0034.5716.11) provide alternative sourcing while maintaining the specified electrical and mechanical parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (A)	Voltage Rating (V AC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	Approval Agency	Inventory (Pcs)
GDC-2A	Eaton - Electronics Division	GDC	2	250	Slow Blow	5x20mm	35	31.6	cURus, IMQ, MITI/JET	1057
BK/GDC-2A	Eaton - Electronics Division	GDC	2	250	Slow Blow	5x20mm	35	31.6	cULus, IMQ, MITI/JET	3452
BK/GMD-2-R	Eaton - Electronics Division	GMD	2	250	Slow Blow	5x20mm	100	42	CSA, PSE/JET, UL	823
BK/S506-2-R	Eaton - Electronics Division	S506	2	250	Slow Blow	5x20mm	35	31.6	BSI, CCC, CSA, CURUS, IMQ, PSE/JET, SEMKO, VDE	1053
S506-2-R	Eaton - Electronics Division	S506	2	250	Slow Blow	5x20mm	35	31.6	BSI, CCC, CSA, CURUS, IMQ, PSE/JET, SEMKO, VDE	1081
0213002.MXP	Littelfuse Inc.	213	2	250	Slow Blow	5x20mm	35	92.705	BSI, CCC, CE, CSA, PSE, SEMKO, UR, VDE	17911
0034.3120	SCHURTER Inc.	FST 5x20	2	250	Slow Blow	5x20mm	35	16	CCC, cURus, VDE	12003
0034.3779	SCHURTER Inc.	FSL 5x20	2	250	Slow Blow	5x20mm	100	4.45	cULus	1059
0034.5046	SCHURTER Inc.	FTT 5x20	2	250	Slow Blow	5x20mm	35	124	cURus	1286
0034.5620.11	SCHURTER Inc.	SMD-FST	2	250	Slow Blow	5x20mm	35	16	cURus, VDE	3554
0034.5716.11	SCHURTER Inc.	SMD-FTT	2	250	Slow Blow	5x20mm	35	124	cURus	1197

Engineering Selection Recommendations

All listed substitute parts maintain the core electrical specifications of 2 A current rating and 250 V AC voltage rating with slow blow response characteristics in the 5mm x 20mm package format. Selection among equivalents should be based on approval agency requirements for the target application.

For applications requiring broad international certification coverage, the Littelfuse 0213002.MXP provides certifications including BSI, CCC, CE, CSA, PSE, SEMKO, UR, and VDE. The Eaton S506-2-R and BK/S506-2-R variants offer comprehensive multi-agency approvals including BSI, CCC, CSA, CURUS, IMQ, PSE/JET, SEMKO, and VDE.

For applications with specific regional certification requirements, SCHURTER parts 0034.3120 and 0034.5620.11 provide CCC, cURus, and VDE compliance. The BK/GMD-2-R and 0034.3779 variants feature higher breaking capacity ratings of 100 A, suitable for applications requiring enhanced fault current handling.

All substitute parts are active products with confirmed inventory availability. RoHS3 compliance and REACH unaffected status are confirmed for all listed alternatives.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the GDC-2A?

A: Direct substitution requires matching of current rating (2 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), and mechanical package (5mm x 20mm). All listed parts meet these core parameters.

Q: Are there differences in breaking capacity among the substitute parts?

A: Yes. The GDC-2A, BK/GDC-2A, BK/S506-2-R, S506-2-R, 0213002.MXP, 0034.3120, 0034.5046, 0034.5620.11, and 0034.5716.11 have a breaking capacity of 35 A. The BK/GMD-2-R and 0034.3779 have a breaking capacity of 100 A. Breaking capacity selection depends on the maximum fault current expected in the application circuit.

Q: What is the significance of melting I²t values?

A: Melting I²t indicates the thermal energy required to melt the fuse element. Variations in this parameter among substitutes reflect different fuse element designs. The GDC-2A has a melting I²t of 31.6. Substitute parts range from 4.45 to 124, reflecting different thermal response profiles while maintaining the same 2 A current rating and slow blow characteristic.

Q: Can I use a substitute part with a different approval agency certification?

A: Substitute parts must meet the approval agency requirements specified for your application. The GDC-2A carries cURus, IMQ, and MITI/JET certifications. Alternative parts carry different certification combinations. Verify that the selected substitute meets all required certifications for your target market and application.

Q: Are all substitute parts available in the same physical dimensions?

A: Yes. All listed substitute parts conform to the 5mm x 20mm (0.205" Dia x 0.787" L) mechanical package specification and are compatible with standard 5mm x 20mm fuse holders.

Q: What is the difference between parametric equivalents and direct manufacturer equivalents?

A: Parametric equivalents are parts from the same or different manufacturers that match the electrical and mechanical specifications. Direct manufacturer equivalents are parts from alternative manufacturers (Littelfuse, SCHURTER) that provide the same functional performance. Both categories are suitable for substitution based on matching core parameters.

Q: Do all substitute parts have the same operating temperature range?

A: No. The GDC-2A does not specify an operating temperature range. Littelfuse 0213002.MXP operates from -55°C to 125°C. SCHURTER parts vary: 0034.3120 and 0034.5620.11 operate from -55°C to 125°C; 0034.3779 and 0034.5046 operate from -40°C to 85°C; 0034.5716.11 operates from -55°C to 125°C. Select based on your application's thermal environment requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are confirmed RoHS3 compliant and REACH unaffected, meeting current environmental compliance standards.

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