Harwin M20-9702945 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9702945 is a rectangular connector header, right-angle configuration, with 58 positions at 2.54mm pitch. This through-hole, solder-terminated component is designed for board-to-board or cable connections with male pin contacts and unshrouded design. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity. Active alternatives from manufacturers including Amphenol ICC (FCI), Preci-Dip, and 3M provide functional equivalency while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Type	Header, Right Angle
Number of Positions	58
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Contact Type	Male Pin
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
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 is determined by strict adherence to the following critical parameters:

Primary Matching Criteria:

Number of Positions: 58
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Termination: Solder
Fastening Type: Push-Pull
Shrouding: Unshrouded
Material Flammability Rating: UL94 V-0

All substitute parts listed meet these primary criteria. Secondary parameters including contact material, contact finish, insulation material, and operating temperature ranges may vary within acceptable engineering tolerances for board-to-board connector applications. Substitute parts are grouped by manufacturer and product series while maintaining functional and mechanical interchangeability.

Parameter Comparison

Parameter	M20-9702945 (Harwin)	77317-112-58LF (Amphenol ICC)	77317-412-58LF (Amphenol ICC)	77317-812-58LF (Amphenol ICC)	892-70-058-20-002101 (Preci-Dip)	961258-5804-AR (3M)
Number of Positions	58	58	58	58	58	58
Number of Rows	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)
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)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
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
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Length - Mating	0.276" (7.00mm)	0.268" (6.80mm)	0.268" (6.80mm)	0.268" (6.80mm)	0.276" (7.00mm)	0.272" (6.90mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.118" (3.00mm)	0.130" (3.30mm)
Insulation Height	0.200" (5.08mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.200" (5.08mm)	0.197" (5.00mm)
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Copper Alloy
Contact Finish - Mating	Gold	Gold, GXT™	Tin	Gold, GXT™	Gold	Gold
Current Rating	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A	2A
Operating Temperature	-40°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C	-55°C ~ 125°C	-25°C ~ 105°C
Material Flammability Rating	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	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Amphenol ICC BERGSTIK® Series (77317-112-58LF, 77317-412-58LF, 77317-812-58LF)

These three variants from Amphenol ICC provide active product status with extended operating temperature range (-65°C ~ 130°C) compared to the obsolete Harwin part. All three maintain the required 58-position, 2-row configuration at 2.54mm pitch with identical mechanical mounting characteristics. The primary differences are contact finish specifications: 77317-112-58LF features gold-plated mating contacts with GXT™ enhancement, 77317-412-58LF uses tin finish on mating contacts, and 77317-812-58LF provides gold-plated mating contacts with reduced thickness (15.0µin). All three are RoHS compliant with REACH compliance status noted. These parts are suitable for applications requiring active product support and extended temperature performance.

Preci-Dip 892 Series (892-70-058-20-002101)

This part maintains exact dimensional compatibility with the original Harwin M20-9702945, including identical contact lengths (0.276" mating, 0.118" post) and insulation height (0.200"). The 892 series uses brass contact material with gold finish, matching the original design approach. Operating temperature range (-55°C ~ 125°C) and current rating (3A) align with the original specification. ROHS3 compliance and REACH unaffected status match the original part's regulatory profile. This option is optimal for direct replacement in existing designs with minimal qualification requirements.

3M 961 Series (961258-5804-AR)

This connector provides active product status with board-to-board configuration and push-pull fastening. The 961 series operates within -25°C ~ 105°C temperature range, matching the original part's upper limit. Current rating is specified at 2A per contact, which is lower than the original 3A specification. This part is suitable for applications where the lower current rating is acceptable and where 3M component qualification is preferred.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the Harwin M20-9702945 with any of these substitute parts?

A: Direct mechanical and electrical replacement is possible with all listed substitutes due to matching pitch (2.54mm), position count (58), row configuration (2), and contact type (male pin). However, verify your specific application requirements regarding operating temperature range, current rating, and contact finish specifications before final selection.

Q: What is the primary reason for finding substitutes for the M20-9702945?

A: The Harwin M20-9702945 is obsolete. Active substitute parts ensure continued availability for new production, maintenance, and design updates. All listed alternatives are currently in active production status.

Q: Are there differences in contact dimensions between the original and substitutes?

A: Yes. Contact length variations exist: Harwin and Preci-Dip maintain 0.276" mating contact length, while Amphenol ICC variants use 0.268", and 3M uses 0.272". Insulation height also varies slightly (0.190" to 0.200"). These variations are within acceptable tolerances for standard board-to-board connector applications but should be verified against your PCB design specifications.

Q: Which substitute offers the best temperature performance?

A: Amphenol ICC BERGSTIK® variants (77317-112-58LF, 77317-412-58LF, 77317-812-58LF) provide the widest operating temperature range at -65°C ~ 130°C, compared to the original -40°C ~ 105°C specification.

Q: What is the difference between the three Amphenol ICC options?

A: All three maintain identical mechanical and electrical specifications. The differences are in contact finish: 77317-112-58LF uses gold with GXT™ enhancement (30.0µin thickness), 77317-412-58LF uses tin finish (78.7µin thickness), and 77317-812-58LF uses gold with reduced thickness (15.0µin). Select based on your application's corrosion resistance and contact wear requirements.

Q: Does the 3M 961258-5804-AR have any limitations?

A: The 3M part specifies 2A current rating per contact, which is lower than the original 3A specification. Verify that your application current requirements do not exceed 2A per contact before selection.

Q: Are all substitutes RoHS compliant?

A: Yes. All substitute parts are RoHS compliant. The original Harwin part is ROHS3 compliant, while Amphenol ICC, Preci-Dip, and 3M variants are RoHS compliant. Both compliance levels are acceptable for current regulatory requirements.

Q: What packaging options are available?

A: Amphenol ICC and Preci-Dip provide bag and bulk packaging respectively. Packaging selection may affect lead times and minimum order quantities. Verify packaging requirements with your procurement process.

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