M20-9701246 Rectangular Connector Header Right Angle 24 Position 2.54mm Equivalent & Substitute Parts

Part Overview

The Harwin M20-9701246 is a through-hole rectangular connector header with right-angle mounting, 24 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part features male pins with solder termination, push-pull fastening, and unshrouded design suitable for board-to-board or cable interconnection.

Key Parameters

Parameter	Value
Connector Type	Header, Right Angle
Contact Type	Male Pin
Number of Positions	24
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the M20-9701246 is based on strict electrical and mechanical compatibility across the following critical parameters:

Primary Matching Criteria:

24 positions in 2-row configuration
0.100" (2.54mm) mating pitch and row spacing
Right-angle through-hole mounting
Male pin contact type
Solder termination with push-pull fastening
Unshrouded design
UL94 V-0 flammability rating
ROHS3 compliance

All substitute parts listed meet these core requirements. Variations in contact finish, contact material, insulation material, and operating temperature ranges are secondary parameters that do not prevent functional substitution when the primary criteria are satisfied.

Parameter Comparison

Parameter	M20-9701246 (Harwin)	0717640124 (Molex)	0717640224 (Molex)	61302421021 (Würth)	77317-112-24LF (Amphenol)	77317-412-24LF (Amphenol)	77317-812-24LF (Amphenol)	961224-5804-AR (3M)
Manufacturer	Harwin Inc.	Molex	Molex	Würth Elektronik	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Number of Positions	24	24	24	24	24	24	24	24
Number of Rows	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)
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)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
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 Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	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
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Current Rating (Amps)	3A per Contact	Not Specified	Not Specified	3A	3A per Contact	3A per Contact	3A per Contact	2A
Operating Temperature	-40°C ~ 105°C	Not Specified	Not Specified	-40°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-25°C ~ 105°C

Engineering Selection Recommendations

All listed substitute parts satisfy the core electrical and mechanical requirements for direct replacement of the M20-9701246. Selection among active alternatives should be based on the following factors:

Compliance and Regulatory Status: All substitute parts maintain RoHS compliance. Molex 0717640124 and 0717640224, Würth 61302421021, and 3M 961224-5804-AR carry ROHS3 designation matching the original part. Amphenol ICC parts (77317 series) carry standard RoHS compliance. All parts are EAR99 classified with matching HTSUS codes.

Product Availability: Molex 0717640124 and 0717640224 are available in active production with inventory of 872 and 777 units respectively. Würth 61302421021 offers the highest inventory at 1440 units. Amphenol ICC 77317-812-24LF provides 869 units, while 3M 961224-5804-AR offers 1108 units. All substitute parts are in active product status, ensuring long-term availability.

Electrical Performance: The M20-9701246 specifies 3A per contact at -40°C to 105°C operating range. Würth 61302421021 and Amphenol ICC parts (77317-112-24LF, 77317-412-24LF, 77317-812-24LF) maintain the 3A per contact rating. Amphenol ICC parts extend operating temperature to -65°C to 130°C. The 3M 961224-5804-AR operates at 2A per contact within -25°C to 105°C range, representing a reduced current capability.

Contact Finish Characteristics: Molex parts feature gold plating on mating contacts with tin on posts. Würth and Amphenol ICC parts offer gold or tin mating finishes depending on variant selection. Contact material varies between brass (original), copper alloy (Molex, 3M), and phosphor bronze (Amphenol ICC), all suitable for 2.54mm pitch applications.

Frequently Asked Questions (FAQ)

Q: Can Molex 0717640124 directly replace the Harwin M20-9701246?

A: Yes. Both parts share identical 24-position, 2-row configuration at 0.100" pitch with right-angle through-hole mounting, solder termination, and push-pull fastening. The Molex part is in active production status, addressing the obsolescence of the original Harwin part.

Q: What is the difference between Molex 0717640124 and 0717640224?

A: Both are C-Grid 71764 series parts with identical mechanical and electrical specifications. The primary difference is contact finish thickness on the mating surface: 0717640124 provides 15.0µin (0.38µm) gold plating, while 0717640224 provides 30.0µin (0.76µm) gold plating. Both are functionally equivalent for standard applications.

Q: Are Amphenol ICC 77317-112-24LF, 77317-412-24LF, and 77317-812-24LF interchangeable?

A: Yes, all three BERGSTIK® variants maintain identical 24-position, 2-row configuration at 0.100" pitch with right-angle mounting. Differences exist in contact finish: 77317-112-24LF and 77317-812-24LF feature gold mating surfaces with different plating thicknesses (30.0µin and 15.0µin respectively), while 77317-412-24LF features tin mating surface. All three support 3A per contact and -65°C to 130°C operating range.

Q: Does the 3M 961224-5804-AR meet the current requirements of the original part?

A: The 3M part operates at 2A per contact, which is lower than the original M20-9701246 specification of 3A per contact. This part is suitable only for applications where the reduced current rating is acceptable.

Q: What packaging options are available for these substitute parts?

A: Molex parts are supplied in tube packaging. Würth 61302421021 is supplied in bulk. Amphenol ICC 77317-112-24LF is supplied in bulk, while 77317-412-24LF and 77317-812-24LF are supplied in bag packaging. Packaging selection does not affect electrical or mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Molex 0717640124, 0717640224, and Würth 61302421021 carry explicit ROHS3 designation. Amphenol ICC and 3M parts carry standard RoHS compliance. All parts meet RoHS requirements for lead-free solder applications.

Q: What is the operating temperature range difference between substitutes?

A: The original M20-9701246 and Würth 61302421021 operate at -40°C to 105°C. Amphenol ICC BERGSTIK® parts extend this to -65°C to 130°C. The 3M 961224-5804-AR operates at -25°C to 105°C. Selection depends on application temperature requirements.

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