GDB-16A Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The GDB-16A is a 16 A glass cartridge fuse manufactured by Eaton - Electronics Division, designed for AC/DC applications in a 5mm x 20mm form factor. This fuse requires a compatible holder for installation and operates as a fast-blow cartridge fuse. The part is currently in stock with 943 pieces available. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and functional characteristics to ensure direct interchangeability in circuit protection applications.

Substiute Parts

GDB-16A

Eaton - Electronics DivisionIn Stock: 1038GDB-16A Datasheet

Current PartRFQ

BK/GDB-16A

Eaton - Electronics DivisionIn Stock: 1146BK/GDB-16A Datasheet

Parametric EquivalentRFQ

FSD-16A

OptiFuseIn Stock: 1495FSD-16A Datasheet

DirectRFQ

FSC-16A

OptiFuseIn Stock: 3697FSC-16A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GDB-16A are qualified based on the following critical parameters:

Electrical Compatibility:

• Current Rating: 16 A (exact match required)
• Voltage Rating - AC: 250 V (where specified)
• Response Time: Fast Blow (functional characteristic match)

Mechanical Compatibility:

• Package / Case: 5mm x 20mm (physical form factor match)
• Mounting Type: Requires Holder (installation method match)
• Fuse Type: Cartridge, Glass (construction type match)

Functional Requirements:

• AC/DC operation capability
• Fast-blow response characteristic

All substitute parts listed maintain these core parameters, ensuring direct functional replacement within the same circuit protection application without modification to holder or mounting infrastructure.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - GDB-16A (Eaton): The original GDB-16A remains the primary specification reference. Current inventory of 943 pieces supports immediate procurement.

Parametric Equivalent - BK/GDB-16A (Eaton): The BK/GDB-16A is a parametric equivalent from the same manufacturer (Eaton - Electronics Division) within the GDB series. It provides identical electrical and mechanical characteristics with explicit 250 V AC voltage rating specification. RoHS Compliant status is confirmed. Inventory of 1057 pieces is available.

Direct Manufacturer Alternatives - FSD-16A and FSC-16A (OptiFuse): Both OptiFuse parts (FSD-16A and FSC-16A) meet all core electrical and mechanical compatibility requirements. Key differences include:

• FSD-16A: IEC 60127 approval, 35 A breaking capacity, operating temperature range -55°C ~ 125°C, 1401 pieces in stock
• FSC-16A: UL 248 approval, 1 kA breaking capacity, operating temperature range -55°C ~ 90°C, 3684 pieces in stock (highest availability)

Both OptiFuse parts carry ROHS3 Compliant status and are classified as Active products. Selection between FSD-16A and FSC-16A depends on required approval agency certification and operating temperature range specifications for the end application.

Frequently Asked Questions (FAQ)

Q: Can FSD-16A and FSC-16A be used interchangeably with GDB-16A?

A: Yes, both OptiFuse parts are functionally equivalent substitutes. All three parts share identical current rating (16 A), fuse type (Cartridge, Glass), package dimensions (5mm x 20mm), mounting requirement (Requires Holder), and response characteristic (Fast Blow). Selection should be based on required approval agency certification (IEC 60127 for FSD-16A, UL 248 for FSC-16A) and operating temperature range requirements.

Q: What is the difference between BK/GDB-16A and GDB-16A?

A: BK/GDB-16A is a parametric equivalent within the same GDB series from Eaton. The primary difference is explicit voltage rating specification (250 V AC) on the BK/GDB-16A. Both parts are mechanically and electrically identical for 16 A fast-blow cartridge fuse applications in 5mm x 20mm holders.

Q: Are there any temperature operating range limitations I should consider?

A: The OptiFuse FSD-16A operates across -55°C ~ 125°C, while FSC-16A operates across -55°C ~ 90°C. If your application requires operation above 90°C, FSD-16A is the appropriate selection. Operating temperature specifications for the original GDB-16A are not provided in the technical data.

Q: Which substitute part has the highest breaking capacity?

A: FSC-16A has a breaking capacity of 1 kA at rated voltage, compared to FSD-16A at 35 A. Breaking capacity indicates the maximum fault current the fuse can safely interrupt. Application requirements determine which breaking capacity is appropriate.

Q: What is the inventory status for each part?

A: Current stock levels are: GDB-16A (943 pieces), BK/GDB-16A (1057 pieces), FSD-16A (1401 pieces), and FSC-16A (3684 pieces). FSC-16A has the highest availability.

Q: Are all substitute parts RoHS compliant?

A: BK/GDB-16A is RoHS Compliant. Both OptiFuse parts (FSD-16A and FSC-16A) are ROHS3 Compliant. All parts meet current environmental compliance requirements.