BK/GMA-200MA Equivalent & Substitute Parts

Part Overview

The BK/GMA-200MA is a 200 mA, 250 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm form factor manufactured by Eaton - Electronics Division. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer available through standard distribution channels. All substitute parts listed maintain the same electrical ratings, mechanical dimensions, and fast-blow response characteristics required for direct circuit replacement.

Key Parameters

Parameter	Value
Current Rating	200 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Fast Blow
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/GMA-200MA is determined by strict equivalence across the following parameters: current rating (200 mA), voltage rating (250 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm), response time (fast blow), and breaking capacity (35A). All substitute parts listed meet these core electrical and mechanical requirements and are compatible with standard 5mm x 20mm fuse holders.

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Eaton - Electronics Division): Parts that share identical series designation or represent active-status replacements for the obsolete BK/GMA-200MA, including BK/GMA-200-R, BK/GDB-200MA, BK/S500-200-R, BK1/S500-200-R, GDB-200MA, GMA-200-R, and S500-200-R.

Cross-Manufacturer Equivalents (Littelfuse Inc.): Parts from alternative manufacturers that meet all electrical and mechanical parameters, including 0235.200HXP, 0235.200MXP, and 0235.200VXP.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating	Voltage Rating (AC)	Response Time	Package	Breaking Capacity	Product Status	RoHS Status
BK/GMA-200MA	Eaton	GMA	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Obsolete	Non-compliant
BK/GMA-200-R	Eaton	GMA	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
BK/GDB-200MA	Eaton	GDB	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	RoHS Compliant
BK/S500-200-R	Eaton	S500	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
BK1/S500-200-R	Eaton	S500	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
GDB-200MA	Eaton	GDB	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	RoHS Compliant
GMA-200-R	Eaton	GMA	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	RoHS Compliant
S500-200-R	Eaton	S500	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
0235.200HXP	Littelfuse Inc.	235	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
0235.200MXP	Littelfuse	235	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant
0235.200VXP	Littelfuse Inc.	235	200 mA	250 V	Fast Blow	5mm x 20mm	35A	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Eaton Direct Replacement: BK/GMA-200-R is the direct active-status replacement for the obsolete BK/GMA-200MA within the same GMA series. Both parts share identical electrical specifications and mechanical form factor. BK/GMA-200-R carries active product status and ROHS3 compliance, making it the preferred choice for new designs and direct substitution in existing applications.

Alternative Eaton Options: BK/S500-200-R, BK1/S500-200-R, and S500-200-R represent active Eaton alternatives from the S500 series with equivalent electrical performance. These parts carry broader international certification coverage (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE) compared to the GMA series and maintain ROHS3 compliance. GDB-200MA and BK/GDB-200MA from the GDB series are also electrically equivalent with active product status and RoHS compliance.

Cross-Manufacturer Alternatives: Littelfuse 0235.200HXP, 0235.200MXP, and 0235.200VXP provide functionally equivalent substitutes from an alternative manufacturer. All three variants meet the core electrical and mechanical requirements with active product status and ROHS3 compliance. These parts include specified operating temperature range (-55°C ~ 125°C) and carry CE, CSA, and UL certifications.

Compliance Considerations: The original BK/GMA-200MA is RoHS non-compliant. All substitute parts listed are RoHS compliant (either RoHS or ROHS3), supporting compliance requirements in modern applications. Selection should account for specific regulatory and certification requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-200-R be used as a direct replacement for BK/GMA-200MA?

A: Yes. BK/GMA-200-R is the active-status equivalent of the obsolete BK/GMA-200MA. Both parts share identical current rating (200 mA), voltage rating (250 V AC), response time (fast blow), and mechanical dimensions (5mm x 20mm). The primary difference is product status (active vs. obsolete) and RoHS compliance improvement.

Q: What is the difference between Eaton GMA series and S500 series fuses?

A: Both series meet the same electrical specifications for this 200 mA, 250 V application. The S500 series carries broader international certification coverage (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE) compared to GMA series certifications (CSA, PSE, UL). Selection depends on specific regulatory requirements of the target market.

Q: Are Littelfuse 0235.200HXP, 0235.200MXP, and 0235.200VXP interchangeable?

A: Yes. All three Littelfuse variants meet identical electrical and mechanical parameters (200 mA, 250 V, 5mm x 20mm, fast blow, 35A breaking capacity). The designations reflect different packaging or distribution configurations. All carry equivalent certifications and RoHS3 compliance.

Q: What certifications are required for my application?

A: Certification requirements depend on the target application and market. BK/GMA-200-R carries CSA, PSE, and UL certifications. BK/S500-200-R and BK1/S500-200-R carry broader coverage (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE). Littelfuse alternatives carry CE, CSA, KC/K-MARK, and UL certifications. Verify specific certification requirements with application documentation.

Q: Can these fuses be used in any 5mm x 20mm fuse holder?

A: Yes. All substitute parts listed share the identical 5mm x 20mm mechanical form factor and are compatible with standard 5mm x 20mm fuse holders. No holder modification is required for substitution.

Q: What is the difference between fast-blow and other fuse response types?

A: All parts listed are fast-blow fuses, matching the original BK/GMA-200MA response characteristic. Fast-blow fuses interrupt circuits rapidly upon overcurrent conditions. This response type is not interchangeable with time-delay or other response types. Verify that fast-blow response is required for your application before substitution.

Q: Are there any differences in melting I²t values between substitute parts?

A: Yes. The original BK/GMA-200MA and GMA series parts (BK/GMA-200-R, GMA-200-R) have melting I²t of 0.001. GDB and S500 series parts have melting I²t of 0.016. Littelfuse 235 series parts have melting I²t of 0.00867. These differences reflect different thermal characteristics but do not affect compatibility for standard 200 mA, 250 V applications. Consult application-specific requirements if precise I²t matching is critical.

Q: What is the operating temperature range for these fuses?

A: Littelfuse 235 series parts (0235.200HXP, 0235.200MXP, 0235.200VXP) specify operating temperature range of -55°C ~ 125°C. Eaton parts do not specify operating temperature limits in the provided data. Verify temperature requirements for your specific application environment.

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