M22-2012205 Equivalent & Substitute Parts

Part Overview

The M22-2012205 is a rectangular connector header manufactured by Harwin Inc., featuring 22 positions at 2.00mm pitch for through-hole board-to-board applications. This connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across the industrial temperature range of -55°C to 105°C with gold-plated mating contacts and phosphor bronze construction.

Key Parameters

Parameter	M22-2012205 Specification
Manufacturer	Harwin Inc.
Number of Positions	22
Pitch - Mating	0.079" (2.00mm)
Connector Type	Header, Cuttable
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Contact Length - Mating	0.138" (4.60mm)
Contact Length - Post	0.134" (3.40mm)
Insulation Material	Polyamide (PA6T), Nylon 6T
Contact Finish - Mating	Gold
Current Rating	1A per Contact
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the M22-2012205 is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of positions: 22 positions (exact match required for pin count compatibility)
Pitch - Mating: 0.079" (2.00mm) (mandatory for connector interface compatibility)
Connector type: Header, cuttable (functional requirement for board-to-board applications)
Contact type: Male pin (electrical interface requirement)
Mounting type: Through hole (PCB assembly method)
Termination: Solder (assembly process compatibility)

Secondary Compatibility Considerations:

Contact length parameters (mating and post) determine physical fit and stacking height compatibility
Insulation material affects mechanical durability and environmental resistance
Contact finish (gold vs. tin) influences corrosion resistance and signal integrity
Current rating must meet or exceed application requirements
Operating temperature range must encompass application environment
Compliance certifications (RoHS, UL94) must satisfy regulatory requirements

The M22-2012305 (23-position variant) does not qualify as a direct substitute due to position count mismatch. Samtec MTMM-122 series parts maintain the critical 22-position, 2.00mm pitch configuration and are therefore valid substitutes when contact length and temperature specifications align with application requirements.

Parameter Comparison

Parameter	M22-2012205	M22-2012305	MTMM-122-02-F-S-125	MTMM-122-02-G-S-105	MTMM-122-02-G-S-115	MTMM-122-04-F-S-142	MTMM-122-04-L-S-142	MTMM-122-04-T-S-138	MTMM-122-06-F-S-150	MTMM-122-10-G-S-118	MTMM-122-10-L-S-100
Manufacturer	Harwin Inc.	Harwin Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	22	23	22	22	22	22	22	22	22	22	22
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)
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
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
Contact Length - Mating	0.138" (4.60mm)	0.138" (4.60mm)	0.125" (3.18mm)	0.105" (2.67mm)	0.115" (2.92mm)	0.142" (3.61mm)	0.142" (3.61mm)	0.138" (4.60mm)	0.150" (3.81mm)	0.118" (3.00mm)	0.100" (2.54mm)
Contact Length - Post	0.134" (3.40mm)	0.134" (3.40mm)	0.071" (1.80mm)	0.091" (2.30mm)	0.081" (2.06mm)	0.122" (3.10mm)	0.122" (3.10mm)	0.126" (3.20mm)	0.188" (4.78mm)	0.378" (9.60mm)	0.396" (10.06mm)
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)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Tin	Gold	Gold	Gold
Current Rating	1A per Contact	1A per Contact	3A	3A	3A	3A	3A	3A	3A	3A	3A
Operating Temperature	-55°C ~ 105°C	-55°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 ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Harwin Equivalent: M22-2012305 maintains identical electrical and mechanical specifications to the M22-2012205 with the exception of position count (23 vs. 22). This part is active and ROHS3 compliant but is not a pin-compatible substitute due to the additional position.

Samtec MTMM-122 Series Substitutes: All listed Samtec MTMM-122 series connectors maintain the critical 22-position, 2.00mm pitch configuration required for direct substitution. These parts are active products with ROHS3 compliance and UL94 V-0 flammability ratings. Selection among variants depends on contact length requirements:

MTMM-122-04-T-S-138 provides the closest match to M22-2012205 contact length specifications (0.138" mating contact) and maintains the -55°C to 105°C operating temperature range.
MTMM-122-02-F-S-125, MTMM-122-02-G-S-105, and MTMM-122-02-G-S-115 feature shorter contact lengths suitable for applications with reduced stacking height requirements.
MTMM-122-04-F-S-142 and MTMM-122-04-L-S-142 provide extended contact lengths for applications requiring greater mating depth.
MTMM-122-06-F-S-150 and MTMM-122-10-series parts offer progressively longer post lengths for applications requiring extended through-hole penetration.

All Samtec substitutes provide enhanced current rating (3A vs. 1A) and extended operating temperature range (-55°C to 125°C), representing performance improvements over the obsolete M22-2012205.

Frequently Asked Questions (FAQ)

Q: Can M22-2012305 be used as a direct replacement for M22-2012205? A: No. While M22-2012305 shares identical electrical and mechanical specifications, it contains 23 positions versus 22 positions in the M22-2012205. This position mismatch prevents pin-for-pin compatibility and requires PCB redesign for implementation.

Q: What is the primary difference between Harwin M22 and Samtec MTMM-122 series connectors? A: Both maintain the 22-position, 2.00mm pitch configuration required for substitution. Primary differences include insulation material (Polyamide vs. Liquid Crystal Polymer), current rating (1A vs. 3A), and operating temperature range (-55°C to 105°C vs. -55°C to 125°C). Samtec parts offer enhanced electrical performance and thermal capability.

Q: How do contact length variations affect connector selection? A: Contact length determines mating depth and stacking height when connectors are mated. The M22-2012205 specifies 0.138" mating contact length. MTMM-122-04-T-S-138 provides identical mating contact length. Shorter variants (MTMM-122-02 series) reduce overall stacking height; longer variants (MTMM-122-06 and MTMM-122-10 series) increase post length for deeper PCB penetration.

Q: Are all listed substitutes RoHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance and UL94 V-0 flammability rating, satisfying regulatory requirements equivalent to the M22-2012205.

Q: What is the significance of contact finish differences (Gold vs. Tin)? A: Gold-plated mating contacts provide superior corrosion resistance and signal integrity in high-reliability applications. Tin-plated contacts (MTMM-122-04-T-S-138) offer cost optimization while maintaining adequate performance for standard industrial applications. Contact finish selection depends on environmental exposure and signal quality requirements.

Q: Can MTMM-122 series connectors accommodate the same mating interface as M22-2012205? A: Yes. All MTMM-122 variants maintain the 2.00mm pitch and 22-position configuration, ensuring mechanical and electrical compatibility with existing mating connectors designed for M22-2012205.

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