Molex 0003122021 Rectangular Connector Plug Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0003122021 is a 2-position rectangular connector plug housing with a 0.280" (7.11mm) pitch, designed for panel mount applications using crimp contact termination. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and component procurement.

The transition from this obsolete housing to active alternatives requires careful parameter alignment to ensure mechanical and electrical compatibility within the connector assembly.

Substiute Parts

0003122021

MolexIn Stock: 11880003122021 Datasheet

Current PartRFQ

0019092029

MolexIn Stock: 14670019092029 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0003122021 is determined by the following critical parameters:

• Connector Type: Must remain Plug
• Number of Positions: Must remain 2
• Contact Termination: Must remain Crimp
• Fastening Type: Must remain Locking Ramp
• RoHS Compliance: Must maintain ROHS3 Compliant status
• Moisture Sensitivity Level: Must maintain MSL 1 (Unlimited)

The Molex 0019092029 qualifies as a manufacturer-recommended substitute. While it operates at a different pitch (0.264" / 6.71mm) and mounting configuration (Free Hanging instead of Panel Mount), it maintains all critical electrical and mechanical compatibility parameters including connector type, position count, termination method, fastening mechanism, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0019092029 is the manufacturer-recommended substitute for the obsolete 0003122021. Both components maintain ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory and environmental compatibility.

The 0019092029 is currently in active production status with confirmed inventory availability (1451 pcs), providing supply chain continuity for applications requiring 2-position rectangular connector plug housings with crimp termination and locking ramp fastening.

The transition from panel mount to free hanging (in-line) mounting configuration and the pitch change from 0.280" to 0.264" require mechanical integration assessment within the specific application context.

Frequently Asked Questions (FAQ)

Q: Can the 0019092029 directly replace the 0003122021 in all applications?

A: Both components share identical connector type (Plug), position count (2), termination method (Crimp), and fastening mechanism (Locking Ramp). However, the mounting configuration differs (Panel Mount vs. Free Hanging) and pitch specifications vary (0.280" vs. 0.264"), requiring mechanical compatibility verification for the specific application.

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

A: Pitch defines the center-to-center spacing between contact positions. The 0003122021 operates at 0.280" (7.11mm) while the 0019092029 operates at 0.264" (6.71mm). This difference affects mating connector compatibility and PCB layout requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0003122021 and 0019092029 maintain ROHS3 Compliant status, meeting current environmental and regulatory requirements.

Q: What does MSL 1 (Unlimited) mean for these components?

A: Moisture Sensitivity Level 1 indicates the lowest moisture sensitivity classification. These components can be stored indefinitely without special moisture control measures, simplifying inventory management and logistics.

Q: Why is the 0003122021 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 0019092029 represents the active alternative within Molex's current product portfolio for equivalent 2-position plug housing applications.

Q: Are contacts included with these housings?

A: No. Both the 0003122021 and 0019092029 are housings only. Contacts must be procured separately and crimped into the housing during assembly.