M22-2012405 Equivalent & Substitute Parts

Part Overview

The M22-2012405 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting with 24 positions at 0.079" (2.00mm) pitch. This connector features a cuttable header design with unshrouded, board-to-board configuration and solder termination. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing applications and new designs requiring compatible connectivity solutions.

Key Parameters

Parameter	M22-2012405
Manufacturer	Harwin Inc.
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	24
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	-55°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 M22-2012405 is determined by the following critical parameters that must align with the original design:

Primary Matching Criteria:

Pitch - Mating: 0.079" (2.00mm) — mechanical and electrical compatibility
Number of Positions: 24 — connector capacity
Contact Type: Male Pin — mating interface requirement
Mounting Type: Through Hole — PCB assembly compatibility
Termination: Solder — assembly process compatibility
Connector Type: Header, Cuttable — form factor and modularity

Secondary Compatibility Parameters:

Contact Material: Phosphor Bronze — electrical conductivity and durability
Insulation Material: Polyamide or Liquid Crystal Polymer — thermal and mechanical stability
Operating Temperature Range: Minimum -55°C ~ 105°C — thermal envelope
Material Flammability Rating: UL94 V-0 — safety compliance
RoHS Status: ROHS3 Compliant — regulatory compliance

The M22-2015005 from Harwin Inc. is a direct series equivalent with 50 positions, allowing for partial utilization in applications requiring fewer connections. The Samtec TMM and MTMM series parts provide functional equivalents with enhanced specifications (higher current ratings, extended temperature ranges, and alternative contact finishes) while maintaining the core 24-position, 2.00mm pitch architecture.

Parameter Comparison

Parameter	M22-2012405	M22-2015005	TMM-124-01-F-S	TMM-124-02-F-S	TMM-124-02-L-S	TMM-124-06-G-S	MTMM-124-02-G-S-100	MTMM-124-02-T-S-120	MTMM-124-02-T-S-150	MTMM-124-03-G-S-150	MTMM-124-03-T-S-121
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	Header	Header	Header	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
Number of Positions	24	50	24	24	24	24	24	24	24	24	24
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	Tin	Tin	Gold	Tin
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	-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 ~ 105°C	-55°C ~ 125°C	-55°C ~ 105°C
Current Rating	1A per Contact	1A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3.2A per Contact	3A	3A	3A	3A	3A
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 Series Equivalent: M22-2015005 from Harwin Inc. is the recommended primary substitute. It maintains the same manufacturer, series designation (M22), connector architecture, and compliance certifications as the M22-2012405. The 50-position configuration allows for partial utilization in applications requiring 24 connections, with the remaining positions left unloaded or cut as needed. This part is in active production status with robust inventory availability.

Cross-Manufacturer Alternatives: The Samtec TMM and MTMM series connectors provide functional equivalents with enhanced electrical performance. All TMM and MTMM variants maintain the critical 24-position, 2.00mm pitch, through-hole solder termination, and male pin contact architecture. These parts offer higher current ratings (3.0A to 3.2A per contact versus 1A) and extended operating temperature ranges (up to 125°C), making them suitable for applications with elevated thermal or power requirements.

Contact Finish Considerations: Gold-plated mating contacts (TMM-124-01-F-S, TMM-124-02-F-S, TMM-124-02-L-S, TMM-124-06-G-S, MTMM-124-02-G-S-100, MTMM-124-03-G-S-150) provide superior corrosion resistance and are recommended for applications requiring long-term reliability or exposure to corrosive environments. Tin-plated variants (MTMM-124-02-T-S-120, MTMM-124-02-T-S-150, MTMM-124-03-T-S-121) are suitable for standard industrial applications with standard environmental conditions.

Insulation Material Transition: Samtec parts utilize Liquid Crystal Polymer (LCP) insulation instead of the original Polyamide (PA6T) material. LCP provides superior dimensional stability, lower moisture absorption, and enhanced thermal performance, making it a technical upgrade for new designs.

All substitute parts maintain ROHS3 compliance and UL94 V-0 flammability ratings, ensuring regulatory alignment with the original specification.

Frequently Asked Questions (FAQ)

Q: Can M22-2015005 be used as a direct replacement for M22-2012405? A: Yes. M22-2015005 is a direct series equivalent from the same manufacturer with identical pitch, contact type, mounting method, and termination. The 50-position configuration accommodates the 24-position requirement with unused positions. Both parts share the same compliance certifications and operating temperature range.

Q: What are the key differences between Harwin M22 and Samtec TMM/MTMM connectors? A: Both maintain 2.00mm pitch and 24-position configurations. Primary differences include: (1) Current rating — Samtec parts support 3.0A to 3.2A per contact versus 1A for M22-2012405; (2) Operating temperature — TMM/MTMM extend to 125°C versus 105°C maximum for M22 series; (3) Insulation material — Samtec uses LCP versus Polyamide in original; (4) Contact finish options — Samtec offers both gold and tin finishes.

Q: Are gold-plated and tin-plated versions interchangeable? A: Mechanically and electrically, yes. Both finishes provide equivalent mating performance at 2.00mm pitch with identical contact geometry. Gold plating offers superior corrosion resistance for harsh environments or long-term storage. Tin plating is standard for general industrial applications. Selection depends on environmental exposure and reliability requirements rather than functional compatibility.

Q: Can I use a Samtec part in place of the Harwin M22-2012405? A: Yes. All Samtec TMM and MTMM variants listed maintain the critical compatibility parameters: 24 positions, 2.00mm pitch, through-hole solder termination, and male pin contacts. The higher current ratings and extended temperature ranges represent performance enhancements. Samtec parts are fully ROHS3 compliant and meet the same flammability standards.

Q: What is the significance of the M22-2015005 having 50 positions instead of 24? A: The 50-position configuration uses the same 2.00mm pitch and connector footprint as the 24-position M22-2012405. In applications requiring only 24 connections, the remaining 26 positions remain unloaded. This allows a single connector family to serve multiple position requirements while maintaining mechanical and electrical compatibility.

Q: Does the LCP insulation material in Samtec parts affect compatibility? A: No. LCP insulation is functionally equivalent to Polyamide for this application and provides superior thermal stability and moisture resistance. The material change does not affect mating performance, pitch accuracy, or electrical characteristics. LCP is a technical upgrade commonly used in modern connector designs.

Q: Are all listed substitutes in active production? A: Yes. M22-2015005 and all Samtec TMM/MTMM variants are in active production status with confirmed inventory availability. The original M22-2012405 is obsolete, making these active alternatives necessary for new procurement and ongoing applications.

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