M20-7883142 Equivalent & Substitute Parts

Part Overview

The M20-7883142 is a 62-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 right-angle through-hole mounting with gold-plated mating contacts and tin-plated posts, rated for 3A at 1000V across an operating temperature range of -40°C to 105°C.

The M20-7883142 is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this connector specification.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	62
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 Finish - Mating	Gold
Operating Temperature	-40°C ~ 105°C
Current Rating	3A
Voltage Rating	1000V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M20-7883142 is determined by strict alignment with the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count & Arrangement: 62 positions in 2-row configuration
Pitch Specifications: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole, right-angle orientation with solder termination
Fastening Mechanism: Push-pull fastening type
Electrical Performance: 3A current rating and 1000V voltage rating
Environmental & Compliance: Operating temperature -40°C to 105°C, UL94 V-0 flammability, ROHS3 compliance

The Molex 0719730231 meets all critical substitution criteria and is classified as an active product, providing supply continuity for the obsolete M20-7883142.

Parameter Comparison

Parameter	M20-7883142 (Harwin)	0719730231 (Molex)	Compatibility
Connector Type	Receptacle	Receptacle	Match
Contact Type	Female Socket	Female Socket	Match
Number of Positions	62	62	Match
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Match
Number of Rows	2	2	Match
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Match
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Match
Termination	Solder	Solder	Match
Fastening Type	Push-Pull	Push-Pull	Match
Contact Finish - Mating	Gold	Gold	Match
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Insulation Height	0.232" (5.90mm)	0.224" (5.69mm)	Equivalent
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	Equivalent

Engineering Selection Recommendations

The Molex 0719730231 is the qualified substitute for the obsolete M20-7883142. Selection is based on the following engineering criteria:

Product Status: The 0719730231 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain stability compared to the obsolete M20-7883142.

Compliance & Certifications: Both connectors maintain identical compliance profiles: UL94 V-0 flammability rating, ROHS3 compliance, REACH unaffected status, and EAR99 export classification. This ensures regulatory equivalence across all applicable standards.

Electrical & Mechanical Specifications: The 0719730231 matches all critical electrical parameters (3A current rating, 1000V voltage rating) and mechanical specifications (62-position, 2-row configuration with 0.100" pitch). Minor dimensional variations in insulation height (0.224" vs. 0.232") and contact post length (0.120" vs. 0.118") fall within acceptable engineering tolerances for through-hole solder termination applications.

Insulation Material Difference: The M20-7883142 uses Polyamide (PA6T) Nylon 6T insulation, while the 0719730231 uses Liquid Crystal Polymer (LCP) glass-filled insulation. LCP provides superior dimensional stability and thermal performance, making it functionally equivalent or superior for the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0719730231 directly replace the Harwin M20-7883142 in existing designs?

A: Yes. The 0719730231 matches all critical substitution parameters: 62-position receptacle configuration, 0.100" pitch, right-angle through-hole mounting, push-pull fastening, and identical electrical ratings. PCB footprint compatibility is maintained through equivalent dimensional specifications.

Q: What is the significance of the insulation material change from Nylon 6T to LCP?

A: Liquid Crystal Polymer (LCP) insulation provides improved dimensional stability, lower moisture absorption, and enhanced thermal performance compared to Polyamide. For the specified -40°C to 105°C operating range, LCP insulation is functionally equivalent or superior and does not compromise compatibility.

Q: Are there any compliance or certification differences between these connectors?

A: No. Both connectors maintain identical compliance: UL94 V-0 flammability rating, ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Regulatory equivalence is confirmed across all applicable standards.

Q: What are the minor dimensional differences, and do they affect PCB layout?

A: Insulation height differs by 0.008" (0.21mm) and contact post length by 0.002" (0.05mm). These variations are within standard manufacturing tolerances for through-hole connectors and do not require PCB redesign. Solder joint integrity and mechanical retention remain unaffected.

Q: Is the 0719730231 available in equivalent quantities?

A: Current inventory for the 0719730231 is 708 pieces, compared to 1062 pieces for the obsolete M20-7883142. Availability should be confirmed with the supplier for production requirements.

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