Molex 0349006021 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0349006021 is a 6-position receptacle housing for rectangular connectors with a 4.00mm pitch, designed for free-hanging in-line mounting applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The housing accommodates female blade socket contacts via crimp termination and features a sealed design with latch holder fastening. As an obsolete part, sourcing direct replacements or qualified substitutes is necessary to maintain supply chain continuity for legacy systems and repair operations.

Substiute Parts

0349006021

MolexIn Stock: 10000349006021 Datasheet

Current PartRFQ

0349006121

MolexIn Stock: 8900349006121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0349006021 is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Receptacle housing with female blade socket contacts
• Electrical Interface: 6-position, 4.00mm pitch, single-row configuration
• Mechanical Interface: Free-hanging in-line mounting with crimp termination and latch holder fastening
• Environmental Sealing: Sealed design classification
• Regulatory Compliance: ROHS3 compliance and MSL rating

The substitute part 0349006121 maintains full equivalence across all these parameters. Variations in housing color (black vs. gray) and insulation material composition do not affect functional interchangeability, as these are cosmetic and material-grade distinctions that do not impact electrical or mechanical performance within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0349006121 is the qualified substitute for the obsolete 0349006021. Both parts maintain identical electrical and mechanical specifications within the MXP120 34900 series, ensuring direct functional interchangeability.

The primary distinction is product status: 0349006021 is obsolete with limited remaining inventory (940 pcs), while 0349006121 is active production with sustained availability (803 pcs). Both parts carry ROHS3 compliance and unlimited MSL ratings, meeting equivalent regulatory and environmental requirements.

For new designs or system refresh cycles, 0349006121 is the appropriate selection due to active production status and long-term supply assurance. For legacy system maintenance requiring exact color matching to original specifications, the black housing variant (0349006021) may be sourced from remaining inventory while supplies persist.

Frequently Asked Questions (FAQ)

Q: Can 0349006121 be used as a direct replacement for 0349006021?

A: Yes. Both parts are functionally equivalent across all critical parameters: 6-position receptacle housing, 4.00mm pitch, female blade socket contacts, crimp termination, latch holder fastening, and sealed design. The housing color difference (gray vs. black) does not affect electrical or mechanical performance.

Q: What is the difference between these two parts?

A: The primary differences are housing color (black vs. gray), insulation material composition, and product status. The 0349006021 is obsolete; the 0349006121 is in active production. Electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when substituting 0349006121 for 0349006021?

A: No compatibility concerns exist for electrical or mechanical interfaces. Both parts use identical pitch, position count, contact type, and mounting configuration. If color-specific identification is required for system documentation or visual assembly verification, the color difference should be noted.

Q: What is the operating temperature range for these housings?

A: The 0349006121 operates across -40°C to 125°C. This specification is provided for the substitute part; equivalent operating range is implied for the main part based on series classification.

Q: Are both parts RoHS compliant?

A: Yes. Both 0349006021 and 0349006121 are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level), meeting equivalent environmental and regulatory standards.

Q: What packaging is available for the substitute part?

A: The 0349006121 is supplied in bulk packaging. The main part 0349006021 packaging specification is not detailed in available data.