M20-9743046 Equivalent & Substitute Parts

Part Overview

The M20-9743046 is a rectangular connector header manufactured by Harwin Inc., featuring a right-angle through-hole mount configuration with 60 positions at 2.54mm pitch. This connector is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for ongoing design and procurement requirements. The part is designed for board-to-board or cable applications with solder termination and push-pull fastening.

Key Parameters

Parameter	M20-9743046 Specification
Manufacturer	Harwin Inc.
Connector Type	Header, Cuttable
Number of Positions	60
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Termination	Solder
Fastening Type	Push-Pull
Contact Material	Brass
Contact Finish - Mating	Tin
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9743046 is determined by the following critical parameters:

Primary Matching Criteria:

Number of Positions: 60
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole, Right Angle
Contact Type: Male Pin
Termination: Solder
Fastening Type: Push-Pull
Current Rating: 3A per Contact
Material Flammability Rating: UL94 V-0

Secondary Compatibility Factors:

Operating Temperature Range (minimum -40°C, maximum 105°C or higher)
Contact Length - Mating: 0.228" (5.80mm) or equivalent
Insulation Height: 0.200" (5.08mm) or equivalent
RoHS and REACH compliance status

The substitute parts identified below maintain electrical and mechanical compatibility within these parameters while offering active product status and improved availability.

Parameter Comparison

Parameter	M20-9743046	68021-160HLF	77317-103-60LF	77317-104-60LF	77317-403-60LF	77317-404-60LF	77317-803-60LF	77317-804-60LF	PREC030DBAN-M71RC
Manufacturer	Harwin Inc.	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Sullins Connector Solutions
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Number of Positions	60	60	60	60	60	60	60	60	60
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	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)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	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)	0.190" (4.83mm)	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 Material	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass
Contact Finish - Mating	Tin	Gold or Gold, GXT™	Gold, GXT™	Gold, GXT™	Tin	Tin	Gold, GXT™	Gold, GXT™	Tin
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
Operating Temperature	-40°C ~ 105°C	-65°C ~ 125°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
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	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical compatibility with the M20-9743046 across the critical parameters of position count, pitch, mounting configuration, and current rating. The following factors determine selection:

Active Product Status: All substitute parts carry active product status, ensuring long-term availability and supply chain continuity compared to the obsolete M20-9743046.

Compliance Certifications: All substitutes meet UL94 V-0 flammability requirements and maintain RoHS compliance. The M20-9743046 and PREC030DBAN-M71RC are ROHS3 compliant, while Amphenol ICC (FCI) parts are RoHS compliant. REACH status varies: Harwin and Sullins parts are REACH Unaffected, while Amphenol ICC parts are REACH Affected.

Operating Temperature Range: Amphenol ICC (FCI) BERGSTIK® series parts (68021-160HLF, 77317-103-60LF, 77317-104-60LF, 77317-403-60LF, 77317-404-60LF, 77317-803-60LF, 77317-804-60LF) provide extended operating temperature ranges of -65°C to 125°C or -65°C to 130°C, exceeding the original specification of -40°C to 105°C. PREC030DBAN-M71RC maintains the original temperature range.

Contact Finish Options: Tin-finish options (77317-403-60LF, 77317-404-60LF, PREC030DBAN-M71RC) provide direct material compatibility with the original part. Gold-finish options (68021-160HLF, 77317-103-60LF, 77317-104-60LF, 77317-803-60LF, 77317-804-60LF) offer enhanced corrosion resistance and contact reliability.

Contact Material: PREC030DBAN-M71RC maintains brass contact material identical to the original. Amphenol ICC (FCI) parts utilize phosphor bronze, which provides superior spring characteristics and contact durability.

Frequently Asked Questions (FAQ)

Q: Can I directly replace M20-9743046 with any of these substitute parts?

A: All listed substitute parts are electrically and mechanically compatible with the M20-9743046 based on matching position count (60), pitch (2.54mm), mounting type (through-hole right-angle), contact type (male pin), and current rating (3A per contact). Physical board layout compatibility depends on identical insulation height and contact length specifications. Minor variations in these dimensions may require PCB design verification.

Q: What is the difference between tin-finish and gold-finish contact options?

A: Tin-finish contacts (77317-403-60LF, 77317-404-60LF, PREC030DBAN-M71RC) match the original M20-9743046 specification and provide cost-effective performance in standard applications. Gold-finish contacts (68021-160HLF, 77317-103-60LF, 77317-104-60LF, 77317-803-60LF, 77317-804-60LF) offer enhanced corrosion resistance and are preferred for high-reliability applications or environments with potential oxidation exposure.

Q: Why do some substitutes have different contact post lengths?

A: Contact post length (0.100", 0.118", or 0.120") affects solder joint depth and PCB penetration. The original M20-9743046 specifies 0.118" (3.00mm). Substitutes with 0.120" (3.05mm) posts provide equivalent performance with negligible dimensional difference. Parts with 0.100" (2.54mm) posts require verification of PCB hole depth compatibility to ensure adequate solder joint formation.

Q: Are there packaging differences between substitute options?

A: Substitute parts are available in Bulk or Bag packaging. Packaging selection does not affect electrical or mechanical performance and is determined by procurement and inventory management requirements.

Q: Which substitute offers the best long-term availability?

A: All substitute parts carry active product status. Amphenol ICC (FCI) BERGSTIK® series parts represent established connector families with broad market adoption, supporting extended availability. Harwin M20-9743646 (72-position variant) and Sullins PREC030DBAN-M71RC provide alternative sources from established manufacturers.

Q: Do I need to modify my PCB design to use a substitute part?

A: PCB design modifications are not required if the substitute part maintains identical or compatible insulation height, contact length, and pitch specifications. Minor dimensional variations (within 0.01" tolerance) are typically accommodated by standard PCB manufacturing tolerances. Verification of hole diameter and depth compatibility is recommended for parts with different contact post lengths.

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