M22-2512205 Equivalent & Substitute Parts

Part Overview

The M22-2512205 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting with 22 positions at 0.079" (2.00mm) pitch. This connector features male pins, solder termination, and unshrouded design suitable for board-to-board applications. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within the same connector family or compatible alternatives from other manufacturers.

Key Parameters

Parameter	M22-2512205 Specification
Manufacturer	Harwin Inc.
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	22
Pitch - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Contact Material	Phosphor Bronze
Contact Finish - Mating	Gold
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
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the M22-2512205 is determined by the following critical parameters:

Primary Compatibility Criteria:

Pitch - Mating: 0.079" (2.00mm) — exact match required for mechanical fit
Number of Positions: 22 — functional equivalence for circuit connectivity
Contact Type: Male Pin — maintains mating interface compatibility
Mounting Type: Through Hole — PCB assembly method compatibility
Termination: Solder — assembly process compatibility

Secondary Compatibility Criteria:

Connector Type: Header (cuttable or non-cuttable variants acceptable)
Style: Board to Board or Board to Board/Cable
Shrouding: Unshrouded
Contact Material: Phosphor Bronze
Insulation Material: Polyamide or Liquid Crystal Polymer (LCP)

Acceptable Variations:

Contact Finish - Mating: Gold (standard specification)
Operating Temperature: Equal to or exceeding -40°C ~ 105°C range
Current Rating: Equal to or exceeding 1A per Contact
Contact Length - Mating and Post: Variations acceptable if overall connector height remains compatible with application

Substitute parts are grouped into two categories:

Direct Harwin Series Equivalent (M22 Series): M22-2512505 — same manufacturer, same series, maintains full compatibility with identical electrical and mechanical specifications except for increased position count (25 positions).
Cross-Manufacturer Alternatives (Samtec Inc.): MTMM and TMM series connectors — functionally equivalent 22-position headers with 2.00mm pitch, meeting or exceeding electrical and thermal specifications. These parts offer active product status and enhanced current ratings (3A to 3.2A per contact).

Parameter Comparison

Parameter	M22-2512205	M22-2512505	MTMM-122-02-G-S-105	MTMM-122-10-L-S-100	MTMM-122-15-G-S-100-021	TMM-122-01-F-S	TMM-122-01-SM-S	TMM-122-02-L-S	TMM-122-02-S-S	TMM-122-06-G-S	TMM-122-06-L-S
Manufacturer	Harwin Inc.	Harwin Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	22	25	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)
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 Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
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 ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1A per Contact	1A per Contact	3A per Contact	3A per Contact	3A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact
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

For Direct Harwin Series Replacement:

M22-2512505 is the primary recommendation for applications requiring continuity within the Harwin M22 series. This part maintains identical electrical and mechanical specifications to the M22-2512205 while offering active product status and improved availability. The 25-position configuration accommodates the original 22-position requirement with three additional positions available for future expansion or unused termination. Both parts share identical pitch, contact material, finish specifications, and operating temperature range. ROHS3 compliance is maintained across both components.

For Cross-Manufacturer Alternatives:

Samtec MTMM and TMM series connectors provide functionally equivalent substitution with enhanced electrical performance. These alternatives offer:

Extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C)
Increased current rating (3A to 3.2A per contact versus 1A per contact)
Liquid Crystal Polymer insulation material providing superior thermal and mechanical properties
Active product status with established supply chain availability
ROHS3 compliance and equivalent regulatory certifications

Selection between MTMM and TMM series depends on contact length requirements and post length specifications, which vary across individual part numbers to accommodate different application geometries.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, UL94 V-0 flammability rating (where specified), and MSL 1 moisture sensitivity level. Electrical and thermal performance specifications of substitute parts equal or exceed the original M22-2512205 requirements.

Frequently Asked Questions (FAQ)

Q: Can M22-2512505 be used as a direct replacement for M22-2512205?

A: Yes. M22-2512505 is mechanically and electrically compatible with M22-2512205. Both connectors share identical 0.079" (2.00mm) pitch, 22-position core configuration, male pin contact type, through-hole mounting, and solder termination. The M22-2512505 provides 25 positions total, with the additional three positions remaining unused in applications designed for 22-position headers. Both parts are ROHS3 compliant and maintain equivalent operating specifications.

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

A: Primary differences include insulation material (Polyamide versus Liquid Crystal Polymer), operating temperature range (-40°C to 105°C versus -55°C to 125°C), and current rating (1A versus 3A to 3.2A per contact). Contact pitch, number of positions, mounting type, and termination method remain identical. Samtec alternatives provide enhanced thermal performance and higher current capacity, making them suitable for applications with elevated power requirements or extended temperature operation.

Q: Are contact length variations between substitute parts significant?

A: Contact length variations affect overall connector height and mating depth. Substitute parts offer different contact length configurations (Contact Length - Mating ranges from 0.100" to 0.146"; Contact Length - Post ranges from 0.091" to 0.671"). Selection depends on specific application geometry, PCB thickness, and mating connector specifications. Verify that selected substitute part dimensions are compatible with existing mating connectors and PCB layout constraints.

Q: Do all substitute parts maintain the same fastening type?

A: Yes. All listed substitute parts employ push-pull fastening type, identical to the M22-2512205. This ensures mechanical compatibility with existing mating connectors and assembly procedures.

Q: What is the significance of the "Cuttable" designation?

A: The "Cuttable" designation indicates that the connector header can be mechanically separated into individual positions or smaller groups using standard cutting tools. This feature allows customization of connector length for specific application requirements. Samtec TMM series connectors do not carry the "Cuttable" designation but maintain equivalent functionality for fixed 22-position applications.

Q: Are there inventory considerations when selecting substitutes?

A: All listed substitute parts maintain active product status with established inventory levels (794 to 1097 pieces in stock across Samtec alternatives; 916 pieces for M22-2512505). Harwin M22-2512505 is the recommended choice for applications requiring continuity within the original manufacturer's product line. Samtec alternatives provide additional supply chain redundancy and extended availability.

Q: How do insulation material differences affect performance?

A: Polyamide (PA6T) and Liquid Crystal Polymer (LCP) both meet UL94 V-0 flammability requirements. LCP provides superior thermal stability, lower moisture absorption, and enhanced dimensional stability at elevated temperatures. For applications operating within the -40°C to 105°C range, both materials are functionally equivalent. For extended temperature operation (-55°C to 125°C), LCP-based alternatives provide superior performance margins.

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