Harwin M20-9722646 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9722646 is a rectangular connector header with 52 positions at 2.54mm pitch, designed for through-hole mounting in board-to-board or cable applications. This connector features a cuttable, unshrouded design with male pins, tin-plated brass contacts, and a polyamide insulation body rated for -40°C to 105°C operation. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	52
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Insulation Height	0.100" (2.54mm)
Contact Shape	Square
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Insulation Color	Black
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

Number of Positions: 52
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Insulation Height: 0.100" (2.54mm)
Contact Shape: Square
Current Rating: 3A per Contact
Material Flammability Rating: UL94 V-0
Insulation Color: Black
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Contact Length - Mating: Variation permitted within connector design envelope
Contact Length - Post: Variation permitted within connector design envelope
Overall Contact Length: Variation permitted within connector design envelope
Contact Finish - Mating: Tin or Gold finishes acceptable
Contact Finish - Post: Tin or Tin-Lead acceptable
Contact Material: Brass or Phosphor Bronze acceptable
Insulation Material: Polyamide (PA6T), Nylon 6T, or Thermoplastic acceptable
Operating Temperature: Range must encompass or exceed -40°C ~ 105°C
Product Status: Active substitutes preferred for design continuity
RoHS Status: ROHS3 Compliant or RoHS Compliant acceptable
REACH Status: REACH Unaffected or REACH Affected acceptable

All substitute parts listed meet these criteria and are electrically and mechanically interchangeable with the M20-9722646.

Parameter Comparison

Parameter	M20-9722646 (Harwin)	2352-6221-TG (3M)	77313-122-52LF (Amphenol ICC)	77313-124-52LF (Amphenol ICC)	77313-127-52LF (Amphenol ICC)	77313-422-52LF (Amphenol ICC)	77313-424-52LF (Amphenol ICC)	77313-427-52LF (Amphenol ICC)	77313-822-52LF (Amphenol ICC)	77313-824-52LF (Amphenol ICC)	77313-827-52LF (Amphenol ICC)
Manufacturer	Harwin Inc.	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	M20	2300	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Number of Positions	52	52	52	52	52	52	52	52	52	52	52
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.276" (7.00mm)	0.318" (8.08mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.260" (6.60mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.260" (6.60mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.260" (6.60mm)
Contact Length - Post	0.122" (3.10mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)
Overall Contact Length	0.496" (12.60mm)	0.538" (13.67mm)	0.526" (13.35mm)	0.480" (12.19mm)	0.465" (11.81mm)	0.526" (13.35mm)	0.480" (12.19mm)	0.465" (11.81mm)	0.526" (13.35mm)	0.480" (12.19mm)	0.465" (11.81mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Material	Brass	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Thermoplastic, Glass Filled	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
Operating Temperature	-40°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°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	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
Current Rating	3A per Contact	3A	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Not specified	Bulk	Bag	Bulk	Bag	Bag	Bag	Bag	Bag	Bag	Bag
Inventory Status	870 Pcs New Original In Stock	1062 Pcs New Original In Stock	739 Pcs New Original In Stock	940 Pcs New Original In Stock	651 Pcs New Original In Stock	923 Pcs New Original In Stock	1080 Pcs New Original In Stock	793 Pcs New Original In Stock	1123 Pcs New Original In Stock	1157 Pcs New Original In Stock	922 Pcs New Original In Stock

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the M20-9722646 across the critical parameters that define connector interchangeability. Selection among substitutes should be based on the following engineering criteria:

Product Status Consideration: All substitute parts carry Active product status, ensuring long-term availability and manufacturing support. The M20-9722646 is classified as Obsolete, making transition to an active equivalent necessary for design continuity and production planning.

RoHS Compliance: Ten of the eleven substitute parts (all Amphenol ICC BERGSTIK® variants and the 3M 2300 series) carry RoHS Compliant or ROHS3 Compliant status. The 3M 2352-6221-TG is RoHS non-compliant. For applications requiring RoHS compliance, select from the Amphenol ICC BERGSTIK® family (77313 series) or verify compliance requirements before selecting the 3M alternative.

REACH Status: The M20-9722646 carries REACH Unaffected status. Amphenol ICC BERGSTIK® parts are REACH Affected, and the 3M 2352-6221-TG is REACH Affected. For applications in REACH-regulated markets, document the REACH Affected status in material declarations.

Contact Finish Options: Three contact finish configurations are available among substitutes:

Gold finish (30.0µin or 15.0µin thickness): 77313-122-52LF, 77313-127-52LF, 77313-822-52LF, 77313-827-52LF
Tin finish (78.7µin thickness): 77313-422-52LF, 77313-424-52LF, 77313-427-52LF
Gold finish (10.0µin thickness): 2352-6221-TG

Gold-finished contacts provide enhanced corrosion resistance and are suitable for applications with extended shelf life or harsh environmental exposure. Tin-finished contacts are cost-effective for standard applications with controlled storage conditions.

Operating Temperature Range: All Amphenol ICC BERGSTIK® substitutes extend the operating temperature range to -65°C ~ 130°C, exceeding the M20-9722646 specification of -40°C ~ 105°C. The 3M 2352-6221-TG provides -55°C ~ 105°C. Select based on application thermal requirements.

Contact Length Variations: Substitute parts offer three mating contact length options (0.305", 0.266", 0.260") and corresponding post lengths. These variations accommodate different PCB thicknesses and mating depths. Verify mechanical fit within the application's connector cavity and mating interface before final selection.

Frequently Asked Questions (FAQ)

Q: Are all listed parts electrically interchangeable with the M20-9722646?

A: Yes. All substitute parts maintain the same 52-position, 2-row configuration at 0.100" (2.54mm) pitch with identical row spacing, contact shape, current rating, and fastening mechanism. Electrical performance is equivalent across all listed alternatives.

Q: What is the primary reason for substitution?

A: The M20-9722646 is classified as Obsolete. All listed substitutes carry Active product status, ensuring continued manufacturing availability, technical support, and supply chain reliability for new designs and production runs.

Q: Do contact finish differences affect compatibility?

A: Contact finish does not affect mechanical or electrical compatibility. Tin-finished contacts (77313-422-52LF, 77313-424-52LF, 77313-427-52LF) are suitable for standard applications. Gold-finished contacts provide enhanced corrosion resistance for extended storage or harsh environments. The choice depends on application requirements and cost considerations.

Q: Which substitute offers the best RoHS compliance?

A: All Amphenol ICC BERGSTIK® parts (77313 series) carry RoHS Compliant status. The 3M 2352-6221-TG is RoHS non-compliant. For RoHS-regulated applications, select from the Amphenol ICC family.

Q: How do contact length variations affect PCB design?

A: Contact length variations (mating lengths of 0.305", 0.266", or 0.260") accommodate different PCB thicknesses and mating depths. Verify the selected part's contact length against your application's connector cavity depth and mating interface specifications. Consult the connector manufacturer's mechanical drawings for precise dimensional requirements.

Q: Are there packaging differences among substitutes?

A: Yes. Substitutes are available in Bag or Bulk packaging. The 3M 2352-6221-TG is supplied in Bulk packaging. Amphenol ICC parts are available in both Bag and Bulk configurations. Select based on your procurement and inventory management requirements.

Q: What is the operating temperature range for each substitute?

A: The M20-9722646 operates from -40°C to 105°C. All Amphenol ICC BERGSTIK® substitutes extend this to -65°C to 130°C. The 3M 2352-6221-TG operates from -55°C to 105°C. Select based on your application's thermal environment.

Q: Do REACH Affected substitutes require special documentation?

A: Yes. Amphenol ICC BERGSTIK® parts and the 3M 2352-6221-TG carry REACH Affected status, unlike the original M20-9722646 (REACH Unaffected). Include REACH Affected status in material declarations and supply chain documentation for applications in REACH-regulated markets.

Q: Which substitute offers the highest current rating?

A: All substitutes maintain the 3A per contact current rating, matching the M20-9722646 specification. No performance advantage exists among alternatives in this parameter.

Q: Can I mix different substitute parts in the same assembly?

A: All substitutes are mechanically and electrically compatible with each other due to identical pitch, position count, and contact specifications. However, maintain consistency within a single assembly for manufacturing control and traceability purposes.

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