M20-9983145 Equivalent & Substitute Parts

Part Overview

The M20-9983145 is a rectangular connector header manufactured by Harwin Inc., featuring 62 positions with 0.100" (2.54mm) pitch, designed for through-hole board-to-board or cable applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	M20-9983145
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
Termination	Solder
Contact Finish - Mating	Gold
Contact Material	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	3A per Contact
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the M20-9983145 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Number of Positions: 62
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
Termination: Solder
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Contact Finish - Mating: Gold or Tin (both acceptable for signal integrity)
Contact Material: Brass or Phosphor Bronze (both acceptable for electrical performance)
Insulation Material: Polyamide (PA6T), Nylon 6T, Liquid Crystal Polymer (LCP), or Thermoplastic (all acceptable for mechanical stability)
Operating Temperature Range: Minimum -40°C to +105°C (substitute ranges may exceed this)
Contact Length - Mating: Variations within 0.240" to 0.318" acceptable for board-to-board spacing
Contact Length - Post: Variations within 0.105" to 0.120" acceptable for solder joint formation
Overall Contact Length: Variations within 0.437" to 0.538" acceptable for mating stack height

Substitutes meeting all critical parameters and operating within allowable variations are electrically and mechanically compatible.

Parameter Comparison

Parameter	M20-9983145 (Main)	M20-9983245	0010897622 (Molex)	2362-6221-TG (3M)	77313-122-62LF	77313-124-62LF	77313-127-62LF	77313-422-62LF	77313-424-62LF	77313-427-62LF	77313-822-62LF
Manufacturer	Harwin Inc.	Harwin Inc.	Molex	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Number of Positions	62	64	62	62	62	62	62	62	62	62	62
Number of Rows	2	2	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™
Contact Material	Brass	Brass	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP), Glass Filled	Thermoplastic, Glass Filled	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Not specified	-55°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	-65°C ~ 130°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	UL94 V-0	UL94 V-0
Current Rating	3A per Contact	3A per Contact	Not specified	3A	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS 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)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): M20-9983245 is the manufacturer-recommended substitute from Harwin Inc. This part maintains identical electrical and mechanical specifications to the M20-9983145 with the exception of position count (64 vs. 62). The M20-9983245 is active in production, ROHS3 compliant, and carries the same operating temperature range and current rating. Selection of this part ensures continuity within the Harwin M20 series ecosystem.

Active Equivalent Substitutes (62-Position, 2.54mm Pitch):

All remaining substitutes maintain the critical 62-position, 2-row, 0.100" pitch configuration and are active in production status. Selection among these alternatives depends on specific compliance and contact finish requirements:

RoHS3 Compliant Alternatives:

0010897622 (Molex C-Grid 70280 series): Copper alloy contacts with LCP insulation, active status
77313-122-62LF, 77313-124-62LF, 77313-127-62LF, 77313-822-62LF (Amphenol ICC BERGSTIK series): Gold-finished phosphor bronze contacts, extended operating temperature range (-65°C to 130°C)
77313-422-62LF, 77313-424-62LF, 77313-427-62LF (Amphenol ICC BERGSTIK series): Tin-finished phosphor bronze contacts, extended operating temperature range (-65°C to 130°C)

Non-RoHS3 Compliant Alternative:

2362-6221-TG (3M 2300 series): Copper alloy contacts with thermoplastic insulation, extended operating temperature range (-55°C to 105°C). This part is RoHS non-compliant and REACH affected; selection requires regulatory approval for target application.

Position Count Variation:

M20-9983245: 64-position variant from Harwin Inc. Suitable only for applications requiring additional contact positions beyond the original 62-position design.

Frequently Asked Questions (FAQ)

Q: Can I use a 64-position connector (M20-9983245) as a substitute for the 62-position M20-9983145?

A: The M20-9983245 maintains identical pitch, row spacing, and electrical characteristics but provides two additional contact positions. Mechanical compatibility depends on PCB layout. If the PCB is designed for 62 positions only, the additional two positions on the M20-9983245 will extend beyond the intended footprint. Verify PCB design accommodates the increased length before selection.

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

A: Both gold and tin finishes are acceptable for signal integrity in this connector category. Gold-finished contacts (77313-122-62LF, 77313-124-62LF, 77313-127-62LF, 77313-822-62LF) provide enhanced corrosion resistance and are preferred for long-term storage or high-reliability applications. Tin-finished contacts (77313-422-62LF, 77313-424-62LF, 77313-427-62LF) are cost-effective alternatives suitable for standard industrial applications. Contact finish selection does not affect electrical performance for this connector type.

Q: Are Amphenol ICC BERGSTIK series connectors (77313 series) fully compatible with the original Harwin M20-9983145?

A: Yes. All BERGSTIK series 62-position, 2.54mm pitch connectors listed meet the critical electrical and mechanical parameters. Variations in contact material (phosphor bronze vs. brass), insulation material (thermoplastic vs. polyamide), and operating temperature range (-65°C to 130°C vs. -40°C to 105°C) are within allowable substitution parameters. BERGSTIK connectors are active in production and RoHS compliant, making them suitable direct replacements.

Q: Why is the 3M 2362-6221-TG marked as RoHS non-compliant?

A: The 3M 2362-6221-TG contains materials or finishes that do not meet ROHS3 compliance thresholds. This part is also REACH affected. Selection of this connector requires verification that the target application permits non-RoHS components. For new designs or applications with RoHS compliance mandates, select from the RoHS3-compliant alternatives listed.

Q: What is the significance of the extended operating temperature range on Amphenol ICC BERGSTIK connectors?

A: Amphenol ICC BERGSTIK series connectors operate from -65°C to 130°C, exceeding the original M20-9983145 specification of -40°C to 105°C. This extended range provides additional thermal margin for applications subject to extreme environmental conditions. For standard applications within the original temperature range, this extended capability does not affect performance or cost considerations.

Q: Can I mix contact finishes within a single connector assembly?

A: No. Each connector part number specifies a uniform contact finish across all positions. Mixing different part numbers with different finishes within a single mating pair is not recommended, as inconsistent contact finishes may introduce impedance variations or corrosion pathways. Maintain uniform finish selection across mating connector pairs.

Q: What packaging options are available for these substitutes?

A: Packaging varies by manufacturer. M20-9983245 is supplied in bulk packaging. Amphenol ICC BERGSTIK series connectors are supplied in bag packaging. Molex 0010897622 is supplied in bulk packaging. 3M 2362-6221-TG is supplied in bulk packaging. Verify packaging specifications with supplier for procurement and handling requirements.

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