Harwin M20-9743146 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9743146 is a rectangular connector header, right-angle mounted, 62-position, 2.54mm pitch, designed for through-hole soldering applications. This connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter tolerances for board-to-board or cable interconnection applications.

Key Parameters

Parameter	M20-9743146 Specification
Manufacturer Part Number	M20-9743146
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Header, Cuttable
Contact Type	Male Pin
Number of Positions	62
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
Contact Length - Mating	0.228" (5.80mm)
Contact Length - Post	0.118" (3.00mm)
Insulation Height	0.200" (5.08mm)
Contact Shape	Square
Contact Material	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Material Flammability Rating	UL94 V-0
Insulation Color	Black
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the M20-9743146 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Number of Positions: 62 (exact match required)
Number of Rows: 2 (exact match required)
Pitch - Mating: 0.100" (2.54mm) (exact match required)
Row Spacing - Mating: 0.100" (2.54mm) (exact match required)
Mounting Type: Through Hole, Right Angle (exact match required)
Contact Type: Male Pin (exact match required)
Termination: Solder (exact match required)
Current Rating: 3A per Contact (exact match required)
Material Flammability Rating: UL94 V-0 (exact match required)

All identified substitute parts meet these core criteria. Secondary parameters including contact finish, contact material composition, insulation material type, and operating temperature range may vary within acceptable engineering tolerances. Parts are classified as active products from Harwin Inc., Amphenol ICC (FCI), and Sullins Connector Solutions.

Parameter Comparison

Parameter	M20-9743146	M20-9743646	77317-103-62LF	77317-104-62LF	77317-403-62LF	77317-404-62LF	77317-803-62LF	77317-804-62LF	PREC031DBAN-M71RC
Manufacturer	Harwin Inc.	Harwin Inc.	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Sullins Connector Solutions
Number of Positions	62	72	62	62	62	62	62	62	62
Number of Rows	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)
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)
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	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	0.228" (5.80mm)	0.228" (5.80mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)	0.100" (2.54mm)	0.120" (3.05mm)	0.100" (2.54mm)	0.120" (3.05mm)	0.100" (2.54mm)	0.120" (3.05mm)	0.120" (3.05mm)
Insulation Height	0.200" (5.08mm)	0.200" (5.08mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.190" (4.83mm)	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	Square	Square
Contact Material	Brass	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass
Contact Finish - Mating	Tin	Tin	Gold, GXT™	Gold, GXT™	Tin	Tin	Gold, GXT™	Gold, GXT™	Tin
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Polybutylene Terephthalate (PBT)
Operating Temperature	-40°C ~ 105°C	-40°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	-40°C ~ 105°C
Current Rating	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
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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts are active products with current manufacturing status, addressing the obsolescence of the M20-9743146. Selection criteria are based on product status, regulatory compliance, and certification alignment.

Harwin Inc. Substitute (M20-9743646): This part differs in position count (72 vs. 62) and is not a direct electrical equivalent. Selection requires design modification to accommodate the increased position count and is suitable only when additional connector positions are required or acceptable.

Amphenol ICC (FCI) BERGSTIK® Series (77317-103-62LF, 77317-104-62LF, 77317-403-62LF, 77317-404-62LF, 77317-803-62LF, 77317-804-62LF): These parts maintain exact electrical and mechanical compatibility with the M20-9743146 across all critical parameters. All variants are RoHS Compliant and MSL 1. Operating temperature range extends to -65°C ~ 130°C, providing enhanced thermal performance. Contact material is phosphor bronze with tin or gold plating options. Insulation material is thermoplastic. These parts are suitable for direct substitution without design modification.

Sullins Connector Solutions (PREC031DBAN-M71RC): This part maintains exact electrical and mechanical compatibility with the M20-9743146. Operating temperature range matches the original specification (-40°C ~ 105°C). Contact material is brass with tin plating. Insulation material is polybutylene terephthalate (PBT). ROHS3 Compliant and MSL 1. Suitable for direct substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can M20-9743646 be used as a direct replacement for M20-9743146?

A: No. M20-9743646 has 72 positions compared to the 62 positions of M20-9743146. This difference requires PCB layout modification and is not a direct electrical equivalent. Use only if design accommodates the additional positions.

Q: Are the Amphenol ICC BERGSTIK® parts (77317 series) electrically compatible with M20-9743146?

A: Yes. All 77317 series parts maintain the same number of positions (62), pitch (2.54mm), row spacing (2.54mm), mounting type (through-hole right-angle), contact type (male pin), termination (solder), and current rating (3A per contact). These parts are direct electrical equivalents.

Q: What is the difference between 77317-103-62LF and 77317-104-62LF?

A: The primary difference is contact length post: 77317-103-62LF has 0.100" (2.54mm) while 77317-104-62LF has 0.120" (3.05mm). Both are electrically equivalent and suitable for substitution; selection depends on PCB thickness and solder joint requirements.

Q: What is the difference between gold-plated (77317-103-62LF, 77317-104-62LF, 77317-803-62LF, 77317-804-62LF) and tin-plated (77317-403-62LF, 77317-404-62LF) contact finishes?

A: Contact finish affects corrosion resistance and mating force characteristics. Gold plating provides superior corrosion resistance and lower contact resistance. Tin plating is cost-effective and suitable for standard applications. Both finishes meet UL94 V-0 flammability requirements. Selection depends on environmental exposure and performance requirements.

Q: Can PREC031DBAN-M71RC be used as a direct replacement for M20-9743146?

A: Yes. PREC031DBAN-M71RC maintains exact electrical and mechanical compatibility across all critical parameters: 62 positions, 2.54mm pitch, 2-row configuration, through-hole right-angle mounting, male pin contacts, solder termination, and 3A per contact current rating. Operating temperature range matches the original specification.

Q: What is the difference in operating temperature between M20-9743146 and the Amphenol ICC BERGSTIK® substitutes?

A: M20-9743146 operates from -40°C to 105°C. Amphenol ICC BERGSTIK® parts operate from -65°C to 130°C, providing extended thermal performance. This enhanced range does not affect compatibility; the original specification range remains fully supported.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitute parts are RoHS Compliant or ROHS3 Compliant. M20-9743146 is ROHS3 Compliant. Amphenol ICC parts are RoHS Compliant. PREC031DBAN-M71RC is ROHS3 Compliant. All parts meet regulatory requirements for lead-free manufacturing.

Q: What packaging options are available for substitute parts?

A: Packaging varies by part number. M20-9743646 is supplied in Bulk. Amphenol ICC BERGSTIK® parts are supplied in Bag or Bulk configurations. PREC031DBAN-M71RC is supplied in Bulk. Packaging selection does not affect electrical or mechanical compatibility; selection depends on procurement and inventory requirements.

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