M22-2531246 Equivalent & Substitute Parts

Part Overview

The M22-2531246 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle board-to-board applications. This 12-position connector operates at 2.00mm pitch with male pin contacts and solder termination. The part is currently obsolete, making identification of compatible alternatives essential for ongoing design support and component procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	M22-2531246
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Series	M22
Connector Type	Header, Cuttable
Pitch - Mating	0.079" (2.00mm)
Number of Positions	12
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Termination	Solder
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 M22-2531246 is based on the following critical parameters that must remain consistent:

Series Compatibility: Both parts must belong to the M22 series from Harwin Inc.
Pitch Specification: Mating pitch must remain 0.079" (2.00mm) to ensure mechanical and electrical compatibility with mating connectors
Mounting Configuration: Through-hole, right-angle mounting type must be preserved
Contact Type: Male pin contacts with solder termination required
Electrical Ratings: Current rating of 1A per contact and operating temperature range of -40°C ~ 105°C must be maintained
Compliance Standards: RoHS3 compliance and UL94 V-0 flammability rating must be met

The M22-2531405 qualifies as a substitute based on these parameters. The primary difference is the number of positions (14 versus 12), which represents a functional extension rather than a deviation from core electrical and mechanical specifications.

Parameter Comparison

Parameter	M22-2531246	M22-2531405
Manufacturer	Harwin Inc.	Harwin Inc.
Series	M22	M22
Connector Type	Header, Cuttable	Header, Cuttable
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Number of Positions	12	14
Number of Rows	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin
Termination	Solder	Solder
Contact Length - Mating	0.138" (4.60mm)	0.138" (4.60mm)
Contact Length - Post	0.094" (2.40mm)	0.094" (2.40mm)
Insulation Height	0.079" (2.00mm)	0.079" (2.00mm)
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Current Rating	1A per Contact	1A per Contact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active

Engineering Selection Recommendations

The M22-2531405 is the manufacturer-recommended substitute for the obsolete M22-2531246. Both connectors maintain identical electrical and mechanical specifications across all critical parameters, including pitch, mounting configuration, contact ratings, and operating temperature range. The M22-2531405 is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts meet ROHS3 compliance and UL94 V-0 flammability requirements. The primary design consideration is the position count difference: the M22-2531405 provides 14 positions compared to the 12 positions of the original part. This difference requires PCB layout modification to accommodate the additional connector length, but does not affect electrical or thermal performance per contact.

Frequently Asked Questions (FAQ)

Q: Can the M22-2531405 be used as a direct replacement for the M22-2531246?

A: The M22-2531405 is electrically and mechanically compatible with the M22-2531246 across all rated parameters. However, the increased position count (14 versus 12) requires PCB layout adjustment. The connector footprint will be longer due to the additional two positions at the same 2.00mm pitch.

Q: What is the significance of the position count difference?

A: The number of positions determines the physical length of the connector header. At 2.00mm pitch, each additional position adds 2.00mm to the overall connector length. The M22-2531405 is 4.00mm longer than the M22-2531246. This affects PCB routing and component placement but does not impact electrical performance.

Q: Are the contact finishes different between these parts?

A: Yes. The M22-2531246 features tin contact finish on both mating and post surfaces. The M22-2531405 specifies gold contact finish on the mating surface. Both finishes are compatible with standard solder termination and do not affect interchangeability at the electrical level.

Q: Does the cuttable header feature apply to both parts?

A: Yes. Both the M22-2531246 and M22-2531405 are cuttable headers, allowing the connector to be segmented to the required number of positions during assembly.

Q: What is the inventory status for these parts?

A: The M22-2531246 is obsolete with 907 pieces in stock. The M22-2531405 is active production with 817 pieces currently available. For new designs, the M22-2531405 is the recommended selection due to its active status and assured long-term availability.

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