M20-9701445 Rectangular Connector Header Right Angle 28 Position 2.54mm Equivalent & Substitute Parts

Part Overview

The Harwin M20-9701445 is a through-hole right-angle rectangular connector header with 28 positions at 0.100" (2.54mm) pitch, configured as a 2-row unshrouded male pin header. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part features gold-plated mating contacts, brass contact material, and solder termination suitable for board-to-board or cable applications. Substitutes must maintain electrical and mechanical compatibility across pitch, position count, row configuration, mounting style, and contact characteristics.

Key Parameters

Parameter	M20-9701445 (Harwin)
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	28
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Shrouding	Unshrouded
Contact Finish - Mating	Gold
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 28
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole, Right Angle
Contact Type: Male Pin
Termination: Solder
Shrouding: Unshrouded
Style: Board to Board or Cable

Acceptable Variation Parameters:

Contact Length - Mating: Minor variations acceptable (6.10mm to 6.90mm range)
Contact Length - Post: Minor variations acceptable (2.79mm to 3.30mm range)
Insulation Height: Minor variations acceptable (4.83mm to 5.08mm range)
Contact Material: Brass, Copper Alloy, or Phosphor Bronze
Contact Finish - Mating: Gold or Tin acceptable
Operating Temperature: Must meet or exceed -40°C to 105°C range
Current Rating: Must meet or exceed 3A per Contact

All substitute parts listed maintain these critical parameters and are therefore electrically and mechanically compatible with the M20-9701445.

Parameter Comparison

Parameter	M20-9701445 (Harwin)	0717640128 (Molex)	0717640228 (Molex)	77317-112-28LF (Amphenol ICC)	77317-412-28LF (Amphenol ICC)	77317-812-28LF (Amphenol ICC)	961228-5804-AR (3M)
Manufacturer	Harwin Inc.	Molex	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header
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)
Number of Positions	28	28	28	28	28	28	28
Number of Rows	2	2	2	2	2	2	2
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)
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
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Length - Mating	0.276" (7.00mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.268" (6.80mm)	0.268" (6.80mm)	0.268" (6.80mm)	0.272" (6.90mm)
Contact Length - Post	0.118" (3.00mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.130" (3.30mm)
Insulation Height	0.200" (5.08mm)	0.200" (5.08mm)	0.200" (5.08mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.197" (5.00mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold, GXT™	Tin	Gold, GXT™	Gold
Contact Material	Brass	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Copper Alloy
Insulation Material	Polyamide (PA6T), Nylon 6T	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
Operating Temperature	-40°C ~ 105°C	Not specified	Not specified	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-25°C ~ 105°C
Current Rating	3A per Contact	Not specified	Not specified	3A per Contact	3A per Contact	3A per Contact	2A
Material Flammability Rating	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	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)

Engineering Selection Recommendations

All listed substitute parts maintain active product status and are suitable for direct replacement of the obsolete M20-9701445. Selection among substitutes should be based on the following criteria:

Molex C-Grid 71764 Series (0717640128, 0717640228): These parts offer active production status with ROHS3 compliance. The 0717640228 variant provides enhanced gold plating thickness (30.0µin) compared to 0717640128 (15.0µin), offering improved contact durability in high-cycle mating applications. Both variants feature breakaway connector design and are suitable for automotive, general purpose, lighting, medical, and telecommunications applications.

Amphenol ICC BERGSTIK® Series (77317-112-28LF, 77317-412-28LF, 77317-812-28LF): These parts provide extended operating temperature range (-65°C to 130°C) and maintain 3A per contact current rating matching the original specification. The 77317-112-28LF and 77317-812-28LF variants feature gold plating with GXT™ enhancement, while 77317-412-28LF uses tin plating. All three variants are RoHS compliant with REACH status noted. The BERGSTIK® series offers phosphor bronze contact material with superior contact length specifications (6.80mm mating, 3.05mm post).

3M 961 Series (961228-5804-AR): This part provides active status with RoHS compliance and operates within the -25°C to 105°C range. The current rating is specified at 2A per contact, which is lower than the original 3A specification. This variant is suitable for applications where the reduced current rating is acceptable.

For applications requiring maximum compatibility with the original M20-9701445 specifications, the Amphenol ICC BERGSTIK® series variants are recommended due to matching current ratings and extended temperature range. For cost-optimized procurement with active supplier support, the Molex C-Grid 71764 series provides reliable alternatives with established automotive and telecommunications qualification.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the M20-9701445?

A: All listed substitute parts are mechanically and electrically compatible with the M20-9701445 due to matching pitch (2.54mm), position count (28), row configuration (2 rows), mounting style (through-hole right-angle), and contact type (male pin solder). However, verify that your application's current and temperature requirements are met by the selected substitute. The 3M 961228-5804-AR variant has a reduced current rating of 2A per contact compared to the original 3A specification.

Q: What is the difference between the Molex 0717640128 and 0717640228?

A: Both parts are identical except for contact finish thickness on the mating surface. The 0717640228 provides 30.0µin (0.76µm) gold plating compared to 15.0µin (0.38µm) on the 0717640128. The thicker plating on the 0717640228 offers enhanced durability in high-cycle mating applications and improved corrosion resistance.

Q: Why do the Amphenol ICC BERGSTIK® parts have different part numbers (77317-112-28LF, 77317-412-28LF, 77317-812-28LF)?

A: These part numbers indicate different contact finish specifications. The 77317-112-28LF and 77317-812-28LF feature gold plating with GXT™ enhancement, while 77317-412-28LF uses tin plating. The GXT™ variants provide enhanced contact performance. All three maintain identical mechanical compatibility and current rating (3A per contact).

Q: Does the operating temperature range affect compatibility?

A: Operating temperature range does not affect mechanical or electrical compatibility for mating and unmating operations. However, if your application operates outside the -40°C to 105°C range of the original M20-9701445, select a substitute with an appropriate temperature rating. The Amphenol ICC BERGSTIK® series supports -65°C to 130°C, providing extended capability.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are RoHS compliant. The Harwin M20-9701445 and Molex variants are ROHS3 compliant. The Amphenol ICC and 3M variants are RoHS compliant. REACH status varies by part; verify specific REACH requirements for your application.

Q: What packaging options are available?

A: Packaging varies by manufacturer. Molex parts are supplied in Tube packaging. Amphenol ICC 77317-112-28LF is supplied in Bulk packaging, while 77317-412-28LF and 77317-812-28LF are supplied in Bag packaging. The 3M variant packaging is not specified. Confirm packaging requirements with your procurement process.

Q: Can I use the 3M 961228-5804-AR as a direct replacement?

A: The 3M part is mechanically compatible but has a reduced current rating of 2A per contact compared to the original 3A specification. Use this variant only if your application current requirements do not exceed 2A per contact. For applications requiring the full 3A rating, select Molex or Amphenol ICC alternatives.

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