Harwin M22-2581246 Equivalent & Substitute Parts

Part Overview

The Harwin M22-2581246 is a rectangular connector header with vertical orientation, 24 positions, and 2.00mm pitch designed for through-hole mounting with solder termination. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 105°C and is suitable for board-to-board or cable applications requiring push-pull fastening.

Key Parameters

Parameter	Value
Manufacturer Part Number	M22-2581246
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	24
Number of Rows	2
Pitch - Mating	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
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 eligibility is determined by strict alignment with the following critical parameters:

Pitch - Mating: 0.079" (2.00mm) — all substitutes must match this specification
Number of Positions: 24 — connector must accommodate the same pin count
Number of Rows: 2 — row configuration must be identical
Row Spacing - Mating: 0.079" (2.00mm) — spacing between rows must match
Mounting Type: Through Hole — PCB mounting method must be consistent
Termination: Solder — connection method must be solder-based
Fastening Type: Push-Pull — mechanical coupling mechanism must be push-pull
Contact Type: Male Pin — gender must remain male
Style: Board to Board or Cable — application context must align
Shrouding: Unshrouded — no shroud present on all parts
Insulation Material: Polyamide (PA6T), Nylon 6T or equivalent thermoplastic
Material Flammability Rating: UL94 V-0 — flame rating must meet or exceed this standard
RoHS Status: ROHS3 Compliant — environmental compliance required

Substitutes identified in this reference meet all mandatory parameters. Variations in contact length, contact finish, current rating, and operating temperature are documented in the comparison table below.

Parameter Comparison

Parameter	M22-2581246 (Main)	M22-2581046	0877582416	10075024-F01-12ULF	10075024-G01-12ULF	TMM-112-03-S-D
Manufacturer	Harwin Inc.	Harwin Inc.	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Samtec Inc.
Number of Positions	24	20	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)
Number of Rows	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)
Contact Length - Mating	0.197" (5.00mm)	0.197" (5.00mm)	0.157" (4.00mm)	0.157" (4.00mm)	0.157" (4.00mm)	0.157" (4.00mm)
Contact Length - Post	0.091" (2.30mm)	0.091" (2.30mm)	0.102" (2.60mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.106" (2.69mm)
Overall Contact Length	0.346" (8.80mm)	0.346" (8.80mm)	0.319" (8.10mm)	0.295" (7.49mm)	0.295" (7.49mm)	0.323" (8.20mm)
Contact Finish - Mating	Tin	Tin	Gold	Gold	Gold	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Copper Alloy	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polyamide (PA46), Nylon 4/6, Glass Filled	Thermoplastic	Thermoplastic	Liquid Crystal Polymer (LCP)
Current Rating	1A per Contact	1A per Contact	Not specified	2A (AC/DC)	2A (AC/DC)	3.2A per Contact
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Not specified	Not specified	Not specified	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitutes (24-Position, Full Compatibility)

The Molex 0877582416, Amphenol ICC 10075024-F01-12ULF, and Amphenol ICC 10075024-G01-12ULF are direct substitutes for the M22-2581246. All three maintain the 24-position, 2.00mm pitch configuration with identical row spacing and through-hole solder termination. These parts are currently in active production status, ensuring long-term availability and supply chain stability. All substitutes carry UL94 V-0 flammability ratings and RoHS compliance certifications.

The Samtec TMM-112-03-S-D also qualifies as a direct substitute with identical position and pitch specifications. This part offers an extended operating temperature range (-55°C to 125°C) compared to the original specification and provides higher current capacity (3.2A per contact). The TMM series uses Liquid Crystal Polymer insulation material, which differs from the original polyamide but maintains equivalent electrical and mechanical performance.

Partial Substitute (20-Position Configuration)

The Harwin M22-2581046 is a reduced-position variant with 20 positions instead of 24. This part is suitable only for applications where the connector footprint can accommodate fewer positions. It shares identical pitch, row spacing, mounting type, and termination method with the original part. The M22-2581046 is in active production status and maintains ROHS3 compliance and UL94 V-0 flammability rating.

Selection Criteria

For applications requiring exact pin-count compatibility, select from the 24-position substitutes: 0877582416, 10075024-F01-12ULF, 10075024-G01-12ULF, or TMM-112-03-S-D. For designs with reduced connector requirements, the M22-2581046 provides a compatible alternative within the same product family.

All recommended substitutes are in active production and carry current environmental compliance certifications, eliminating obsolescence risk associated with the original M22-2581246.

Frequently Asked Questions (FAQ)

Q: Can the M22-2581046 (20-position) be used as a direct replacement for the M22-2581246 (24-position)?

A: The M22-2581046 is mechanically and electrically compatible but accommodates only 20 positions instead of 24. This substitute is suitable only if your application design can function with fewer connector positions. The pitch, row spacing, mounting type, and termination method are identical.

Q: What are the key differences between the Molex 0877582416 and the Amphenol ICC 10075024 series?

A: Both maintain the 24-position, 2.00mm pitch specification required for substitution. The Molex part uses phosphor bronze contacts with tin finish on the mating surface, while the Amphenol ICC parts use copper alloy contacts with gold finish. The Amphenol ICC parts provide higher current capacity (2A per contact) compared to the original specification (1A per contact). Contact length variations exist but do not affect mechanical compatibility in standard through-hole applications.

Q: Does the Samtec TMM-112-03-S-D offer any performance advantages?

A: The TMM-112-03-S-D provides higher current capacity (3.2A per contact) and an extended operating temperature range (-55°C to 125°C) compared to the original part (-40°C to 105°C). The insulation material differs (Liquid Crystal Polymer instead of polyamide), but electrical and mechanical performance remain equivalent for standard applications.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitutes carry RoHS compliance certifications. The Harwin and Samtec parts are ROHS3 compliant. The Amphenol ICC parts carry RoHS compliance certification. All parts meet current environmental regulatory requirements.

Q: What is the impact of contact finish differences (tin versus gold)?

A: The original M22-2581246 uses tin-plated mating contacts. Substitute parts with gold-plated mating contacts (Molex 0877582416, Amphenol ICC 10075024 series, and Samtec TMM-112-03-S-D) provide enhanced corrosion resistance and improved contact reliability in demanding environments. Gold plating is a performance enhancement and does not affect mechanical compatibility.

Q: Can these connectors be intermated with each other?

A: These parts are not designed for intermating. Each connector type requires its corresponding mating connector. Substitution applies to the header connector only; corresponding mating connectors must be selected from the same manufacturer and series.

Q: What packaging options are available for these substitutes?

A: The M22-2581046 is supplied in bulk packaging. The Molex 0877582416 is supplied in tray packaging. The Amphenol ICC 10075024-F01-12ULF and 10075024-G01-12ULF are supplied in tube packaging. The Samtec TMM-112-03-S-D is supplied in bulk packaging. Packaging selection may affect procurement quantities and handling requirements.

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