Molex 1728780002 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The Molex 1728780002 is a 2-position rectangular connector receptacle housing with 0.157" (4.00mm) pitch, designed for free-hanging in-line applications. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance requirements. The part features sealed construction with crimp contact termination and latch lock fastening, suitable for applications requiring reliable electrical connections in protected environments.

Substiute Parts

1728780002

MolexIn Stock: 9551728780002 Datasheet

Current PartRFQ

2077820002

MolexIn Stock: 39152077820002 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 1728780002 are identified based on the following critical parameters that determine functional compatibility:

• Connector Type & Contact Type: Receptacle with female socket contacts
• Number of Positions: 2-position configuration
• Mounting Style: Free hanging in-line orientation
• Contact Termination: Crimp-style termination
• Fastening Mechanism: Latch lock engagement
• Sealed Construction: Environmental protection requirement
• Regulatory Compliance: ROHS3 and REACH compliance maintained

The substitute part Molex 2077820002 maintains these core functional parameters while representing an active product status alternative. The pitch specification (0.142" / 3.60mm vs. 0.157" / 4.00mm) represents a geometric variation within the same connector family, requiring mechanical compatibility verification in the target application.

Parameter Comparison

Engineering Selection Recommendations

The Molex 2077820002 is designated as the manufacturer-recommended substitute for the obsolete 1728780002. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. The substitute part carries active product status with confirmed inventory availability (3816 pcs), supporting production continuity.

The primary distinction between these parts is the pitch specification: the substitute operates at 0.142" (3.60mm) versus the original 0.157" (4.00mm). This geometric difference requires mechanical compatibility assessment within the specific application context, including mating connector specifications and PCB layout constraints.

Both parts share identical functional characteristics: 2-position receptacle configuration, female socket contacts, crimp termination, latch lock fastening, and sealed construction. The substitute's documented operating temperature range (-40°C ~ 105°C) provides explicit thermal performance specification absent from the original part documentation.

Frequently Asked Questions (FAQ)

Q: Can the Molex 2077820002 directly replace the 1728780002 in all applications?

A: Both parts share identical connector type, contact configuration, termination method, and fastening mechanism. The pitch difference (3.60mm vs. 4.00mm) requires verification against mating connector specifications and PCB layout requirements. Direct substitution is possible only when the receiving connector and circuit board design accommodate the 3.60mm pitch specification.

Q: What is the significance of the pitch difference between these parts?

A: Pitch defines the center-to-center spacing between contact positions. The 0.142" (3.60mm) pitch of the substitute part differs from the original 0.157" (4.00mm) specification. This geometric variation affects mechanical fit with mating connectors and PCB footprint compatibility. Applications must be evaluated for accommodation of this dimensional change.

Q: Are both parts environmentally sealed?

A: Yes. Both the 1728780002 and 2077820002 feature sealed construction, providing equivalent environmental protection for applications requiring moisture and contamination resistance.

Q: What is the difference in product status between these parts?

A: The 1728780002 is classified as obsolete, indicating discontinued manufacturing and limited availability. The 2077820002 maintains active product status with current manufacturing and confirmed inventory levels, supporting long-term supply chain reliability.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory compliance for applications subject to these standards.

Q: Are contacts included with these connector housings?

A: No. Both parts are supplied as housings only. Contacts must be sourced separately and crimped into the housing according to manufacturer specifications.