Harwin M22-2520946 Equivalent & Substitute Parts

Part Overview

The Harwin M22-2520946 is a rectangular connector header designed for through-hole mounting in board-to-board applications. This vertical connector features 18 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	M22-2520946
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Series	M22
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	18
Number of Rows	2
Pitch - Mating	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-40°C ~ 105°C
Current Rating	1A per Contact
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M22-2520946 is determined by the following critical parameters:

Series Compatibility: Both parts must belong to the Harwin M22 series to ensure mechanical and electrical interchangeability within the connector ecosystem.
Pitch Specification: Mating pitch of 0.079" (2.00mm) and row spacing of 0.079" (2.00mm) are mandatory for PCB footprint compatibility.
Connector Type: Header configuration with cuttable design maintains functional equivalence.
Contact Type: Male pin configuration with square contact shape and phosphor bronze material.
Mounting and Termination: Through-hole solder termination with push-pull fastening type.
Electrical Ratings: 1A per contact current rating and operating temperature range of -40°C ~ 105°C.
Compliance: ROHS3 compliance and UL94 V-0 flammability rating.

The M22-2521046 qualifies as a substitute based on these parameters. The primary difference is the number of positions (20 positions versus 18 positions), which represents a superset configuration within the same mechanical and electrical framework.

Parameter Comparison

Parameter	M22-2520946 (Main Part)	M22-2521046 (Substitute)
Manufacturer	Harwin Inc.	Harwin Inc.
Series	M22	M22
Connector Type	Header, Cuttable	Header, Cuttable
Contact Type	Male Pin	Male Pin
Number of Positions	18	20
Number of Rows	2	2
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.138" (4.60mm)	0.138" (4.60mm)
Contact Length - Post	0.091" (2.30mm)	0.091" (2.30mm)
Overall Contact Length	0.287" (7.30mm)	0.287" (7.30mm)
Insulation Height	0.059" (1.50mm)	0.059" (1.50mm)
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Tin	Tin
Contact Finish - Post	Tin	Tin
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
Mated Stacking Heights	3.8mm, 5.9mm, 8.6mm	3.8mm, 5.9mm, 8.6mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The M22-2521046 is the designated manufacturer substitute for the obsolete M22-2520946. Both components maintain identical electrical and mechanical specifications across all critical parameters including pitch, contact configuration, termination method, and operating conditions. The M22-2521046 offers the advantage of active product status, ensuring continued availability and manufacturing support.

The primary design consideration is the increased position count (20 versus 18). Applications utilizing only 18 of the 20 available positions can directly adopt the M22-2521046 without functional impact. The cuttable header design of both parts allows for position reduction if required by specific application constraints.

Both parts maintain full ROHS3 compliance and UL94 V-0 flammability certification, supporting equivalent regulatory and safety requirements across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the M22-2521046 directly replace the M22-2520946 in existing designs?

A: Yes, the M22-2521046 is mechanically and electrically compatible with the M22-2520946. The 20-position configuration accommodates applications designed for 18 positions. The cuttable header design permits position reduction if necessary.

Q: Are the PCB footprints identical between these two parts?

A: The pitch spacing (0.079" / 2.00mm) and row spacing are identical. The M22-2521046 requires additional PCB real estate for the two additional positions. Existing 18-position footprints must be evaluated for accommodation of the extended connector length.

Q: What is the significance of the "cuttable" design?

A: The cuttable header design allows the connector to be mechanically separated to reduce the number of active positions. This feature provides design flexibility for applications with varying position requirements within the M22 series.

Q: Are there differences in electrical performance between these parts?

A: No. Both parts maintain identical current ratings (1A per contact), operating temperature range (-40°C ~ 105°C), and contact material specifications (phosphor bronze with tin finish).

Q: Why is the M22-2520946 classified as obsolete?

A: Product obsolescence reflects manufacturer lifecycle decisions. The M22-2521046 represents the active equivalent within the M22 series, ensuring continued design support and procurement availability.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling procedures apply without special environmental controls.

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