Harwin M22-5321005P Surface Mount Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Harwin M22-5321005P is a surface mount rectangular connector header with 20 positions at 2.00mm pitch, designed for board-to-board applications. This component features male pins with gold-plated phosphor bronze contacts, solder termination, and push-pull fastening. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Active alternatives from both Harwin and Molex manufacturers provide functional equivalence while maintaining compatibility with the original design specifications.

Key Parameters

Parameter	Value
Connector Type	Header, Cuttable / Breakaway
Contact Type	Male Pin
Pitch - Mating	0.079" (2.00mm)
Number of Positions	20
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Insulation Height	0.059" (1.50mm)
Contact Shape	Square
Material Flammability Rating	UL94 V-0
Operating Temperature	-40°C ~ 105°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the M22-5321005P is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Pitch - Mating: 0.079" (2.00mm)
Number of Positions: 20
Number of Rows: 2
Row Spacing - Mating: 0.079" (2.00mm)
Mounting Type: Surface Mount
Termination: Solder
Fastening Type: Push-Pull
Insulation Height: 0.059" (1.50mm)
Contact Shape: Square
Style: Board to Board or Board to Board/Cable compatible

Compliance Requirements:

Material Flammability Rating: UL94 V-0
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories based on contact material and finish specifications:

Group 1 - Gold-Plated Phosphor Bronze Contacts (Direct Electrical Equivalence):

M22-5321005 (Harwin, Active)
0877592015 (Molex, Active)
0877592051 (Molex, Active)
0877592075 (Molex, Active)
0877598054 (Molex, Active)

Group 2 - Alternative Contact Materials and Finishes (Functional Equivalence with Material Variations):

0877592083 (Molex, Tin-plated Copper Alloy)
0877596532 (Molex, Tin-plated Phosphor Bronze)

All substitute parts maintain the core electrical and mechanical interface specifications required for board-to-board connectivity at 2.00mm pitch with 20-position configuration.

Parameter Comparison

Parameter	M22-5321005P (Main)	M22-5321005	0877592015	0877592051	0877592075	0877592083	0877596532	0877598054
Manufacturer	Harwin	Harwin	Molex	Molex	Molex	Molex	Molex	Molex
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway
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)
Number of Positions	20	20	20	20	20	20	20	20
Number of Rows	2	2	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)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.138" (4.60mm)	0.138" (4.60mm)	0.150" (3.81mm)	0.150" (3.81mm)	0.150" (3.81mm)	0.126" (3.20mm)	0.150" (3.81mm)	0.150" (3.81mm)
Insulation Height	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)	0.059" (1.50mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Tin	Tin	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Phosphor Bronze
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-	-	-	-	-	-
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Number of Positions Loaded	All	All	All	All	All	All	All	19

Engineering Selection Recommendations

Primary Recommendation: M22-5321005 (Harwin)

The M22-5321005 is the direct active equivalent from the original manufacturer Harwin. This part maintains identical electrical and mechanical specifications to the obsolete M22-5321005P, including contact material (phosphor bronze), contact finish (gold), and contact length (0.138" / 4.60mm). As an active product with bulk packaging availability, this represents the lowest-risk substitution path for designs currently using the M22-5321005P.

Secondary Recommendations: Molex Milli-Grid Series (0877592015, 0877592051, 0877592075, 0877598054)

These Molex alternatives from the Milli-Grid 87759 series provide functional equivalence with identical pitch, position count, and row spacing. All maintain UL94 V-0 flammability rating and ROHS3 compliance. The primary difference is contact length (0.150" / 3.81mm versus 0.138" / 4.60mm on the original), which affects mated stacking height. These parts are suitable for applications where the increased contact length does not create mechanical interference with mating connectors or PCB layout constraints.

Alternative Consideration: 0877592083 (Molex, Tin-Plated Copper Alloy)

The 0877592083 offers functional substitution with different contact material (copper alloy) and finish (tin plating). The contact length is 0.126" (3.20mm), which is shorter than the original specification. This part includes board guide features and is suitable for applications where contact material variation is acceptable and the reduced contact length does not compromise electrical performance.

Alternative Consideration: 0877596532 (Molex, Tin-Plated Phosphor Bronze)

The 0877596532 maintains phosphor bronze contact material with tin plating and includes board guide features. Contact length matches the Molex standard (0.150" / 3.81mm). This option is appropriate for applications where tin plating is preferred over gold and where the increased contact length is compatible with the mating connector design.

Special Note: 0877598054 (Molex, 19 Positions Loaded)

This part differs from all others by having only 19 of 20 positions loaded. It is not suitable as a direct substitute for the M22-5321005P unless the application design specifically accommodates a single unloaded position.

All substitute parts are active products with current manufacturing status and established supply chains, ensuring long-term availability for production and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can I use Molex Milli-Grid parts as direct replacements for the Harwin M22-5321005P?

A: Molex Milli-Grid parts (0877592015, 0877592051, 0877592075, 0877598054) are functionally equivalent for board-to-board connectivity at 2.00mm pitch with 20 positions. The primary difference is contact length: Molex parts are 0.150" (3.81mm) versus the original 0.138" (4.60mm). This affects mated stacking height and must be evaluated against your mating connector specifications and PCB layout constraints.

Q: What is the difference between the Harwin M22-5321005 and the original M22-5321005P?

A: The M22-5321005 is the active equivalent of the obsolete M22-5321005P. Both share identical electrical and mechanical specifications, including contact material, finish, and length. The primary difference is product status: M22-5321005P is obsolete while M22-5321005 is actively manufactured.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed meet ROHS3 compliance requirements and carry ROHS3 Compliant certification.

Q: What packaging options are available for substitute parts?

A: Harwin M22-5321005 is available in bulk packaging. Molex alternatives are available in multiple packaging formats: tube (0877592015, 0877592051), tape and reel (0877592075, 0877592083, 0877596532), and unspecified packaging (0877598054).

Q: Do all substitute parts have the same contact finish?

A: No. Most substitute parts feature gold-plated contacts (M22-5321005, 0877592015, 0877592051, 0877592075, 0877598054). However, 0877592083 and 0877596532 use tin plating. Contact finish selection depends on application requirements for corrosion resistance and electrical performance.

Q: What is the difference between "Header, Cuttable" and "Header, Breakaway"?

A: Both connector types allow individual position separation. The Harwin M22-5321005P uses cuttable design, while Molex alternatives use breakaway design. Both achieve the same functional result of allowing individual pin extraction or row separation for custom configurations.

Q: Can I mix substitute parts from different manufacturers in the same design?

A: All substitute parts maintain identical pitch (2.00mm), position count (20), and row spacing (2.00mm), allowing interchangeability at the PCB interface level. However, contact length variations (0.126" to 0.150") may affect mating connector compatibility. Evaluate mating connector specifications before mixing manufacturers.

Q: Why does 0877598054 have only 19 positions loaded?

A: The 0877598054 is designed for applications requiring a 19-position configuration within a 20-position header footprint. This is not suitable as a substitute for the M22-5321005P unless your application specifically requires this configuration.

Q: Are operating temperature specifications available for all substitute parts?

A: The Harwin M22-5321005 specifies -40°C to 105°C operating temperature, matching the original M22-5321005P. Molex parts do not provide explicit operating temperature specifications in the available data. For temperature-critical applications, contact the manufacturer for detailed thermal specifications.

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