Harwin M22-2020246 Equivalent & Substitute Parts

Part Overview

The Harwin M22-2020246 is a rectangular connector header with vertical orientation, 4 positions, and 2.00mm pitch designed for through-hole board-to-board applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility. The M22 series connector provides solder termination with push-pull fastening and operates across the -40°C to 105°C temperature range. Active substitute parts are available from both Harwin and Samtec manufacturers, offering equivalent or enhanced electrical and mechanical characteristics.

Key Parameters

Parameter	M22-2020246 Specification
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.079" (2.00mm)
Number of Positions	4
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Contact Material	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	1A per Contact
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters: connector type (header, cuttable), contact type (male pin), pitch (2.00mm), number of positions (4), number of rows (2), row spacing (2.00mm), mounting type (through hole), termination (solder), fastening type (push-pull), contact shape (square), contact material (phosphor bronze), and material flammability rating (UL94 V-0).

The Harwin M22-2020205 serves as the direct manufacturer equivalent, maintaining identical mechanical and electrical specifications while offering active product status and improved contact finish (gold plating on mating surfaces).

Samtec MTMM series parts (MTMM-102-02-F-D-090, MTMM-102-02-G-D-102, MTMM-102-02-L-D-100, MTMM-102-02-S-D-091, MTMM-102-02-S-D-100, MTMM-102-02-T-D-092, MTMM-102-02-T-D-098, MTMM-102-03-G-D-090, MTMM-102-03-L-D-090) qualify as functional substitutes based on matching core parameters. These parts employ liquid crystal polymer (LCP) insulation instead of polyamide, support higher current ratings (3A versus 1A), and operate across an extended temperature range (-55°C to 125°C). Contact length variations and finish options (gold, tin) differentiate specific MTMM variants for application-specific requirements.

Parameter Comparison

Parameter	M22-2020246	M22-2020205	MTMM-102-02-F-D-090	MTMM-102-02-G-D-102	MTMM-102-02-L-D-100	MTMM-102-02-S-D-091	MTMM-102-02-S-D-100	MTMM-102-02-T-D-092	MTMM-102-02-T-D-098	MTMM-102-03-G-D-090	MTMM-102-03-L-D-090
Connector Type	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Positions	4	4	4	4	4	4	4	4	4	4	4
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1A per Contact	1A per Contact	3A	3A	3A	3A	3A	3A	3A	3A	3A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The Harwin M22-2020205 is the primary recommended substitute, offering direct functional equivalence with active product status and improved availability. This part maintains identical mechanical dimensions and electrical specifications while providing gold-plated mating contacts for enhanced corrosion resistance compared to the tin-plated original.

Samtec MTMM series connectors provide cross-manufacturer alternatives with enhanced performance characteristics. Selection among MTMM variants depends on specific application requirements:

MTMM-102-02 series parts feature 0.090" to 0.100" mating contact lengths and are suitable for standard board-to-board interconnections. MTMM-102-03 series parts provide extended 0.090" to 0.153" post contact lengths for applications requiring deeper board penetration or stacking configurations.

Contact finish selection within the MTMM series addresses environmental and reliability requirements. Gold-plated variants (F, G, L designations) provide superior corrosion resistance for harsh environments. Tin-plated variants (S, T designations) offer cost optimization for standard applications. All MTMM parts maintain ROHS3 compliance, UL94 V-0 flammability rating, and MSL 1 moisture sensitivity classification.

The extended operating temperature range (-55°C to 125°C) of MTMM parts exceeds the original specification (-40°C to 105°C), providing thermal margin for demanding applications. The 3A current rating of MTMM parts exceeds the 1A specification of the original, supporting higher power delivery per contact.

Frequently Asked Questions (FAQ)

Q: Can M22-2020205 be used as a direct replacement for M22-2020246?

A: Yes. The M22-2020205 maintains identical pitch (2.00mm), position count (4), row configuration (2), mounting type (through hole), termination (solder), and fastening mechanism (push-pull). The primary difference is product status (active versus obsolete) and contact finish (gold versus tin). Mechanical and electrical compatibility is complete.

Q: What are the key differences between Harwin M22 and Samtec MTMM series?

A: Core compatibility parameters are identical: 2.00mm pitch, 4 positions, 2 rows, through-hole mounting, solder termination, and push-pull fastening. Differences include insulation material (polyamide versus liquid crystal polymer), current rating (1A versus 3A), operating temperature range (-40°C to 105°C versus -55°C to 125°C), and contact length options. MTMM series provides enhanced performance specifications.

Q: How do contact length variations affect substitution?

A: Contact length variations (mating and post lengths) determine board penetration depth and stacking height compatibility. MTMM-102-02 variants provide shorter overall contact lengths (0.255" / 6.48mm) compared to the original M22-2020246 (0.331" / 8.40mm). MTMM-102-03 variants offer extended post lengths for deeper board penetration. Selection depends on PCB thickness and connector stacking requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and UL94 V-0 flammability rating, matching the original specification. Moisture sensitivity level remains MSL 1 (unlimited) across all alternatives.

Q: What is the significance of contact finish options in MTMM series?

A: Contact finish affects corrosion resistance and mating cycle durability. Gold-plated mating surfaces (F, G, L designations) provide superior protection in corrosive environments and support higher mating cycle counts. Tin-plated surfaces (S, T designations) offer cost optimization for standard applications with adequate corrosion resistance. Post finish (gold or tin) affects solder joint reliability and long-term interconnection stability.

Q: Can MTMM parts operate at the extended temperature range specified?

A: Yes. MTMM-102-02-F-D-090, MTMM-102-02-G-D-102, MTMM-102-02-L-D-100, MTMM-102-02-S-D-091, MTMM-102-02-S-D-100, MTMM-102-03-G-D-090, and MTMM-102-03-L-D-090 operate across -55°C to 125°C. MTMM-102-02-T-D-092 and MTMM-102-02-T-D-098 operate across -55°C to 105°C, matching the original temperature specification at the lower bound.

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