M20-9763246 Equivalent & Substitute Parts

Part Overview

The M20-9763246 is a vertical rectangular connector header manufactured by Harwin Inc., featuring 64 positions at 2.54mm pitch with through-hole solder termination. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The connector is designed for board-to-board or cable applications with unshrouded, cuttable construction. It accommodates 3A per contact and operates across -40°C to 105°C, with UL94 V-0 flammability rating and ROHS3 compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	M20-9763246
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	64
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the M20-9763246 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of Positions: 64
Pitch - Mating: 0.100" (2.54mm)
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Style: Board to Board or Cable
Shrouding: Unshrouded
Material Flammability Rating: UL94 V-0

Secondary Compatibility Parameters:

Contact Shape: Square
Insulation Color: Black
Moisture Sensitivity Level: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8536.69.4040

Substitute parts must maintain compatibility across all primary criteria. Variations in contact length, contact finish, insulation material, and contact material are acceptable provided the connector maintains electrical and mechanical interface compatibility with the original design.

Parameter Comparison

Parameter	M20-9763246 (Main)	M20-9763646	0010897643	0010977646	0702871275	0901310952	2364-6221-TG	68779-264HLF	77313-122-64LF	77313-124-64LF	77313-127-64LF
Manufacturer	Harwin Inc.	Harwin Inc.	Molex	Molex	Molex	Molex	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Number of Positions	64	72	64	64	64	64	64	64	64	64	64
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)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Connector Type	Header, Cuttable	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway
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	Kinked Pin, 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
Style	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Cable/Wire	Board to Board or Cable	Board to Board	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
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 per Contact	—	—	—	—	3A	3A	3A per Contact	3A per Contact	3A per Contact
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	—	—	—	—	-55°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-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)
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

Primary Recommendation: M20-9763646 (Harwin Inc.)

The M20-9763646 is the manufacturer-recommended substitute from Harwin Inc. It maintains identical electrical and mechanical specifications to the M20-9763246 with the exception of position count (72 vs. 64). This part is active in production status and ROHS3 compliant. Selection of this part ensures continuity with the original design intent and manufacturer support.

Secondary Recommendations: Molex C-Grid Series (0010897643, 0010977646, 0702871275, 0901310952)

Molex connectors from the C-Grid and C-Grid III series provide direct 64-position equivalents with identical pitch and row spacing. All are active production parts with ROHS3 compliance. These parts feature gold-plated mating contacts and alternative insulation materials (Liquid Crystal Polymer or Polyester, glass-filled) compared to the original Polyamide construction. Operating temperature ranges extend to -65°C minimum and 130°C maximum, exceeding the original specification.

Tertiary Recommendations: Amphenol ICC (FCI) BERGSTIK® Series (68779-264HLF, 77313-122-64LF, 77313-124-64LF, 77313-127-64LF)

Amphenol ICC connectors from the BERGSTIK® and BERGSTIK® II series provide 64-position equivalents with identical pitch and row spacing. All are active production parts with RoHS compliance. These parts feature phosphor bronze contacts with gold plating and extended operating temperature ranges (-65°C to 130°C). Contact length variations exist across the series to accommodate different application requirements.

Alternative: 3M 2364-6221-TG

The 3M connector provides a 64-position equivalent with identical pitch and row spacing. This part is active in production but carries RoHS non-compliant status and REACH-affected designation. Selection of this part requires compliance verification against current regulatory requirements.

Position Count Consideration: M20-9763646

The M20-9763646 features 72 positions instead of 64. This part is suitable only for applications where the additional 8 positions do not create mechanical or electrical conflicts with the existing design. Cuttable construction allows removal of unused positions if required.

Frequently Asked Questions (FAQ)

Q: Can I use a 72-position connector (M20-9763646) as a direct replacement for the 64-position M20-9763246?

A: The M20-9763646 maintains identical pitch, row spacing, and electrical characteristics. The additional 8 positions do not affect compatibility with existing 64-position mating connectors. However, physical board layout must accommodate the increased connector length. The cuttable design allows removal of unused positions if space constraints exist.

Q: What are the key differences between Harwin and Molex substitutes?

A: Harwin substitutes maintain the original Polyamide insulation material and tin contact finish. Molex alternatives use Liquid Crystal Polymer insulation and gold-plated mating contacts. Both meet the same pitch, position count, and electrical specifications. Molex parts offer extended operating temperature ranges (-65°C to 130°C vs. -40°C to 105°C).

Q: Are Amphenol ICC BERGSTIK® connectors fully compatible with the M20-9763246?

A: Yes. BERGSTIK® series connectors maintain identical pitch, position count, row spacing, and fastening type. Contact material differs (phosphor bronze vs. brass), and contact length varies across the series. These variations do not affect electrical or mechanical interface compatibility. Operating temperature ranges extend to -65°C to 130°C.

Q: What is the difference between cuttable and breakaway connector types?

A: Both types allow individual position removal. Cuttable connectors use mechanical cutting for position separation. Breakaway connectors feature designed break points for position removal. Functionally, both achieve the same result for applications requiring fewer than the full position count.

Q: Should I select a connector with extended operating temperature range?

A: Extended temperature ranges (-65°C to 130°C) provide design margin beyond the original specification (-40°C to 105°C). Selection depends on application requirements. If the design operates within the original temperature range, standard-range parts are sufficient. Extended-range parts offer future design flexibility without additional cost in most cases.

**Q: What is the significance of contact finish differences (tin vs. gold)?

A: Tin-plated contacts provide cost-effective performance for standard applications. Gold-plated contacts offer superior corrosion resistance and lower contact resistance, beneficial for high-reliability or harsh-environment applications. Both finishes meet the electrical requirements of the original design at 3A per contact.

Q: Are there RoHS compliance considerations for substitute selection?

A: The original M20-9763246 is ROHS3 compliant. Most active substitutes (Harwin M20-9763646, Molex, and Amphenol ICC parts) maintain RoHS compliance. The 3M 2364-6221-TG is RoHS non-compliant and REACH-affected. Regulatory requirements for your application determine whether RoHS-compliant parts are mandatory.

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

A: Yes. All listed substitutes maintain identical pitch, position count, row spacing, and fastening type. Mating connectors will accept any of these headers. However, design documentation should specify a single part number to ensure procurement consistency and simplify field service.

Q: What packaging options are available for these substitutes?

A: Packaging varies by manufacturer and part number: Bulk, Tray, and Bag options are available. Packaging selection affects cost and handling but does not influence electrical or mechanical performance. Verify packaging availability with your supplier for production volume requirements.

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