M20-7883446 Equivalent & Substitute Parts

Part Overview

The M20-7883446 is a 68-position receptacle connector manufactured by Harwin Inc., designed for board-to-board or cable applications with 0.100" (2.54mm) pitch spacing. This connector features through-hole, right-angle mounting with tin contact finish and is rated for 3A at 1000V across an operating temperature range of -40°C to 105°C.

The M20-7883446 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this connector.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	68
Pitch - Mating	0.100" (2.54mm)
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Type	Female Socket
Operating Temperature	-40°C ~ 105°C
Current Rating	3A
Voltage Rating	1000V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the M20-7883446 is determined by strict equivalence across the following critical parameters:

Connector Configuration: 68-position receptacle with 2 rows at 0.100" (2.54mm) pitch and row spacing
Mounting and Termination: Through-hole, right-angle orientation with solder termination
Electrical Performance: Push-pull fastening, female socket contact type, operating temperature range of -40°C to 105°C
Compliance: UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 rating

The Molex 0719730234 qualifies as a substitute part because it maintains equivalence across all critical configuration parameters. Variations in contact finish (gold versus tin), insulation material composition (LCP glass-filled versus polyamide), and specific dimensional tolerances represent acceptable engineering substitutions within the established parameter framework for this connector category.

Parameter Comparison

Parameter	M20-7883446 (Harwin)	0719730234 (Molex)
Connector Type	Receptacle	Receptacle
Number of Positions	68	68
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Type	Female Socket	Female Socket
Contact Material	Phosphor Bronze	Phosphor Bronze
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Contact Finish - Mating	Tin	Gold (15.0µin / 0.38µm)
Insulation Material	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP), Glass Filled
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Molex 0719730234 is qualified as a direct substitute for the obsolete M20-7883446 based on functional and compliance equivalence. Both connectors maintain identical electrical and mechanical specifications across all critical parameters, including connector configuration, pitch spacing, mounting orientation, and operating temperature range.

The M20-7883446 is obsolete, whereas the Molex 0719730234 maintains active product status, ensuring ongoing availability and supply chain support. Both parts are ROHS3 compliant and carry UL94 V-0 flammability certification, meeting equivalent regulatory and safety requirements.

The primary engineering differences—gold contact finish on the Molex part versus tin on the Harwin part, and LCP glass-filled insulation versus polyamide—represent material variations that do not compromise functional compatibility within the established parameter framework for this connector category.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0719730234 be used as a direct replacement for the M20-7883446 in existing designs?

A: Yes. Both connectors maintain equivalence across all critical parameters: 68-position configuration, 0.100" (2.54mm) pitch, through-hole right-angle mounting, push-pull fastening, and identical operating temperature range. The connectors are mechanically and electrically compatible.

Q: What is the significance of the contact finish difference between tin and gold?

A: Contact finish is a material property that affects corrosion resistance and contact reliability under specific environmental conditions. Both tin and gold finishes are acceptable for general purpose, industrial, and telecommunications applications within the specified operating parameters. The choice between them depends on application-specific environmental exposure requirements.

Q: Does the insulation material difference between polyamide and LCP glass-filled affect compatibility?

A: No. Both insulation materials meet the UL94 V-0 flammability requirement and maintain equivalent electrical and mechanical performance across the specified operating temperature range of -40°C to 105°C. The LCP glass-filled material in the Molex part provides enhanced dimensional stability and is suitable for automated assembly processes.

Q: Why is the M20-7883446 listed as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production. The Molex 0719730234 is an active product with ongoing manufacturing support, making it the recommended choice for new designs and ongoing production requirements.

Q: Are both connectors RoHS compliant?

A: Yes. Both the M20-7883446 and the Molex 0719730234 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting equivalent regulatory requirements for electronic component applications.

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