BK/GDB-160MA Equivalent & Substitute Parts

Part Overview

The BK/GDB-160MA is a 160 mA fast-blow glass cartridge fuse rated for 250 V AC/DC operation in a 5mm x 20mm package. Manufactured by Eaton - Electronics Division, this component is classified as Active product status and requires a fuse holder for installation. Equivalent and substitute parts are identified when they share identical electrical ratings, mechanical dimensions, and response characteristics, enabling direct replacement in circuit protection applications without design modification.

Key Parameters

Parameter	Value
Current Rating	160 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Mounting Type	Requires Holder
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the BK/GDB-160MA is determined by strict equivalence across the following parameters:

Critical Substitution Parameters:

Current Rating: 160 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

All substitute parts listed below meet these criteria. Variations in secondary parameters such as breaking capacity, melting I²t, DC cold resistance, and approval agencies do not disqualify substitution when primary electrical and mechanical parameters are identical.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (Amps)	Voltage Rating - AC	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Product Status
BK/GDB-160MA	Eaton - Electronics Division	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.008	9.1	Active
BK/S500-160-R	Eaton - Electronics Division	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.008	9.1	Active
GDB-160MA	Eaton - Electronics Division	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.008	9.1	Active
0034.1508	SCHURTER Inc.	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.0113	Not Specified	Active
0217.160MXP	Littelfuse Inc.	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.01	2.525	Active
FSC-160MA	OptiFuse	160 mA	250 V	Fast Blow	5mm x 20mm	100A	Not Specified	Not Specified	Active
FSD-160MA	OptiFuse	160 mA	250 V	Fast Blow	5mm x 20mm	35A	0.0099	Not Specified	Active

Engineering Selection Recommendations

All listed substitute parts are classified as Active product status and are RoHS3 compliant. Selection among equivalent parts should be based on the following factors:

Approval Agency Coverage: The BK/GDB-160MA carries UL and VDE approvals. Substitute parts offer expanded certification portfolios:

BK/S500-160-R: BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE
0217.160MXP: CCC, CE, CSA, K-MARK, SEMKO, UL, VDE
FSC-160MA: cULus, UL 248
FSD-160MA: cURus, IEC 60127

Operating Temperature Range: The BK/GDB-160MA does not specify an operating temperature range. Substitute parts with defined ranges are:

0034.1508: -55°C ~ 125°C
0217.160MXP: -55°C ~ 125°C
FSC-160MA: -55°C ~ 90°C
FSD-160MA: -55°C ~ 125°C

Inventory Availability: All substitute parts are in stock. Selection may consider inventory levels for supply chain continuity.

Breaking Capacity Consideration: FSC-160MA offers 100A breaking capacity compared to 35A in other parts. This higher rating does not disqualify substitution but may provide additional margin in high-fault-current applications.

Frequently Asked Questions (FAQ)

Q: Can BK/S500-160-R replace BK/GDB-160MA directly?

A: Yes. Both parts share identical current rating (160 mA), voltage rating (250 V AC), response time (Fast Blow), and package dimensions (5mm x 20mm). Both require a fuse holder and are Active status products from Eaton - Electronics Division.

Q: What is the difference between GDB-160MA and BK/GDB-160MA?

A: GDB-160MA is a parametric equivalent with identical electrical and mechanical specifications. The primary difference is approval agency coverage: GDB-160MA carries VDE and UR approvals, while BK/GDB-160MA carries UL and VDE approvals.

Q: Are OptiFuse FSC-160MA and FSD-160MA interchangeable with the Eaton part?

A: Both OptiFuse parts meet the critical substitution parameters: 160 mA current rating, 250 V AC voltage rating, Fast Blow response, and 5mm x 20mm package. FSC-160MA features a higher 100A breaking capacity. FSD-160MA matches the 35A breaking capacity of the original part.

Q: Does the DC cold resistance variation affect substitution?

A: DC cold resistance is a secondary parameter. Variations (ranging from 2.525 Ohms to 9.1 Ohms across the substitute list) do not prevent substitution when all primary electrical and mechanical parameters are identical.

Q: Which substitute part has the widest operating temperature range?

A: Both 0217.160MXP (Littelfuse) and FSD-160MA (OptiFuse) operate across -55°C ~ 125°C, providing the widest specified range among substitute parts.

Q: Can I use FSC-160MA in place of BK/GDB-160MA in a high-fault-current circuit?

A: FSC-160MA is electrically and mechanically equivalent and carries the same 160 mA current rating and 250 V AC voltage rating. The higher 100A breaking capacity does not disqualify substitution; it may provide additional margin in high-fault-current environments.

Q: What certifications should I verify for my application?

A: Verify that the substitute part carries the required approvals for your target market. BK/GDB-160MA holds UL and VDE certifications. If your application requires different certifications (such as CSA, CCC, or K-MARK), select a substitute part with matching approval agency coverage.

Q: Is the 5mm x 20mm package standard across all substitutes?

A: Yes. All substitute parts use the identical 5mm x 20mm cartridge package and require a fuse holder for installation. Physical fit in existing fuse holders is guaranteed.

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