GMD-200-R Equivalent & Substitute Parts Reference

Part Overview

The GMD-200-R is a 200 mA, 250 V AC/DC slow blow glass cartridge fuse in 5mm x 20mm package format manufactured by Eaton - Electronics Division. This fuse requires a holder for installation and is designed for circuit protection applications requiring slow blow response characteristics. The part is Active status with CSA and UL approval certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time classification, and approval agency compliance to ensure direct functional interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	200 mA
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	35A
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for GMD-200-R are grouped into two categories based on parametric equivalence and direct manufacturer alternatives:

Direct Manufacturer Alternatives (Eaton - Electronics Division): Parts BK/GMD-200-R and BK/S506-200-R share identical electrical specifications with GMD-200-R: 200 mA current rating, 250 V AC voltage rating, slow blow response, 5mm x 20mm package, and 35A breaking capacity. These parts differ only in packaging format (Bulk) and series designation. BK/GMD-200-R maintains identical melting I²t (0.2) and DC cold resistance (5.19 Ohms). BK1/S506-200-R and S506-200-R represent the S506 series equivalent with modified thermal characteristics (Melting I²t: 0.114, DC Cold Resistance: 1 Ohm) and expanded approval agencies (BSI, CCC, CSA, IMQ, SEMKO, UR, VDE).

Parametric Equivalents (Eaton GDC Series): GDC-200MA maintains all critical electrical parameters (200 mA, 250 V, slow blow, 5x20mm, 35A breaking capacity) with reduced melting I²t (0.114) and DC cold resistance (1 Ohm). Approval agencies are cURus and IMQ.

Cross-Manufacturer Equivalents (Littelfuse Inc.): Parts 0239.200MXP, 0218.200HXP, and 0218.200MXP from Littelfuse Series 239 and 218 match all critical parameters: 200 mA, 250 V, slow blow, 5x20mm, 35A breaking capacity. These parts feature expanded operating temperature range (-55°C ~ 125°C) and multiple approval agencies (CE, CSA, KC, UL, CCC, K-MARK, SEMKO, VDE). Melting I²t values range from 0.165 to 0.341, and DC cold resistance from 1.6 to 3.8725 Ohms.

Cross-Manufacturer Equivalents (SCHURTER Inc.): Parts 0034.3110 (FST 5x20 series) and 0034.5036 (FTT 5x20 series) match all critical electrical parameters with melting I²t values of 0.256 and 1.73 respectively. Operating temperature ranges are -55°C ~ 125°C (0034.3110) and -40°C ~ 85°C (0034.5036). Approval agencies include CCC, cURus, and VDE.

Substitution Criteria: All substitute parts maintain identical current rating (200 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm), mounting type (requires holder), and breaking capacity (35A). Variations in melting I²t, DC cold resistance, operating temperature, and approval agencies do not affect functional interchangeability for circuit protection applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (mA)	Voltage Rating - AC (V)	Response Time	Package / Case	Breaking Capacity @ Rated Voltage (A)	Melting I²t	DC Cold Resistance (Ohms)	Approval Agency	RoHS Status
GMD-200-R	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.2	5.19	CSA, UL	ROHS3 Compliant
BK/GMD-200-R	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.2	5.19	CSA, UL	ROHS3 Compliant
BK/S506-200-R	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.114	1	BSI, CCC, CSA, IMQ, SEMKO, UR, VDE	ROHS3 Compliant
BK1/S506-200-R	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.114	1	BSI, CCC, CSA, IMQ, SEMKO, UR, VDE	ROHS3 Compliant
GDC-200MA	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.114	1	cURus, IMQ	ROHS3 Compliant
S506-200-R	Eaton - Electronics Division	200	250	Slow Blow	5mm x 20mm	35	0.114	1	BSI, CCC, CSA, IMQ, SEMKO, UR, VDE	ROHS3 Compliant
0239.200MXP	Littelfuse Inc.	200	250	Slow Blow	5mm x 20mm	35	0.165	3.8725	CE, CSA, KC, UL	ROHS3 Compliant
0218.200HXP	Littelfuse Inc.	200	250	Slow Blow	5mm x 20mm	35	0.341	1.6	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE	ROHS3 Compliant
0218.200MXP	Littelfuse Inc.	200	250	Slow Blow	5mm x 20mm	35	0.341	1.6	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE	ROHS3 Compliant
0034.3110	SCHURTER Inc.	200	250	Slow Blow	5mm x 20mm	35	0.256	Not Specified	CCC, cURus, VDE	ROHS3 Compliant
0034.5036	SCHURTER Inc.	200	250	Slow Blow	5mm x 20mm	35	1.73	Not Specified	cURus	ROHS3 Compliant

Engineering Selection Recommendations

Eaton Direct Alternatives: BK/GMD-200-R is the direct bulk packaging equivalent of GMD-200-R with identical electrical and thermal characteristics. Selection is appropriate when bulk packaging is required. BK/S506-200-R, BK1/S506-200-R, and S506-200-R offer expanded approval agency coverage (BSI, CCC, CSA, IMQ, SEMKO, UR, VDE) compared to GMD-200-R (CSA, UL). These parts are suitable for applications requiring broader international compliance certifications. GDC-200MA provides cURus and IMQ certifications with modified thermal characteristics (lower melting I²t and DC cold resistance).

Littelfuse Cross-Manufacturer Equivalents: 0239.200MXP, 0218.200HXP, and 0218.200MXP maintain all critical electrical parameters with CSA and UL certifications matching GMD-200-R requirements. These parts feature extended operating temperature range (-55°C ~ 125°C) and are suitable for applications with wider temperature extremes. 0218.200HXP and 0218.200MXP provide additional international certifications (CCC, CE, K-MARK, SEMKO, VDE).

SCHURTER Cross-Manufacturer Equivalents: 0034.3110 and 0034.5036 maintain all critical electrical parameters with cURus certification. 0034.3110 supports extended operating temperature (-55°C ~ 125°C) and includes CCC and VDE certifications. 0034.5036 operates within -40°C ~ 85°C range with cURus certification only.

Selection Criteria: Choose substitute parts based on required approval agencies for target markets, operating temperature requirements, and thermal characteristics (melting I²t and DC cold resistance) appropriate for specific circuit protection applications. All listed parts are Active status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/GMD-200-R is the bulk packaging equivalent with identical electrical specifications (200 mA, 250 V, slow blow, 5x20mm), thermal characteristics (melting I²t 0.2, DC cold resistance 5.19 Ohms), and approval certifications (CSA, UL). The only difference is packaging format.

Q: What is the difference between GMD-200-R and S506-200-R?

A: Both parts share identical electrical ratings (200 mA, 250 V, slow blow, 5x20mm, 35A breaking capacity). S506-200-R features lower melting I²t (0.114 vs 0.2) and DC cold resistance (1 Ohm vs 5.19 Ohms), with expanded approval agencies (BSI, CCC, CSA, IMQ, SEMKO, UR, VDE vs CSA, UL). Selection depends on required certifications and thermal response characteristics.

Q: Are Littelfuse 0218.200HXP and 0218.200MXP interchangeable with GMD-200-R?

A: Yes, for electrical circuit protection function. Both parts match all critical parameters: 200 mA current rating, 250 V voltage rating, slow blow response, 5x20mm package, and 35A breaking capacity. Littelfuse parts feature extended operating temperature (-55°C ~ 125°C) and broader international certifications (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE). Melting I²t (0.341) and DC cold resistance (1.6 Ohms) differ from GMD-200-R.

Q: What does melting I²t indicate and why does it vary among substitutes?

A: Melting I²t is a thermal characteristic indicating the fuse element's energy absorption capacity before melting. Variations among substitute parts (ranging from 0.114 to 1.73) reflect different fuse element designs and materials. All listed parts maintain the same current rating (200 mA) and voltage rating (250 V), ensuring circuit protection function. Selection of specific melting I²t value depends on application-specific thermal requirements.

Q: Can SCHURTER 0034.3110 replace GMD-200-R in all applications?

A: 0034.3110 matches all critical electrical parameters (200 mA, 250 V, slow blow, 5x20mm, 35A breaking capacity) and is ROHS3 compliant. Approval agencies differ (CCC, cURus, VDE vs CSA, UL). Operating temperature range is -55°C ~ 125°C. Selection is appropriate when SCHURTER certifications meet application requirements and extended temperature range is beneficial.

Q: What is the significance of approval agencies (CSA, UL, VDE, etc.) in fuse selection?

A: Approval agencies certify that fuses meet specific safety and performance standards for target markets. GMD-200-R carries CSA and UL certifications suitable for North American applications. Substitute parts with additional certifications (BSI, CCC, VDE, SEMKO, UR, IMQ, K-MARK, KC) support broader geographic market requirements. Selection must match certifications required by target application and regulatory jurisdiction.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant except where not specified. ROHS3 compliance indicates conformance to Restriction of Hazardous Substances regulations, ensuring absence of restricted materials (lead, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, bis(2-ethylhexyl) phthalate, butyl benzyl phthalate, dibutyl phthalate, diisobutyl phthalate).

Q: What is the difference between 5x20mm package and other fuse sizes?

A: The 5mm x 20mm package dimension is a standardized cartridge fuse format. All listed parts use this identical package size, ensuring mechanical compatibility with standard 5x20mm fuse holders. This dimension is not interchangeable with other fuse package sizes (such as 6.3x32mm or 10x38mm).

Q: Do all substitute parts require a fuse holder for installation?

A: Yes. All listed parts, including GMD-200-R and all substitutes, are cartridge fuses requiring a holder for installation. They are not panel-mount or inline fuses and cannot be soldered directly to circuit boards.

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