Molex 0873814489 Equivalent & Substitute Parts

Part Overview

The Molex 0873814489 is a 44-position receptacle connector from the Milli-Grid 87381 series, designed for board-to-board applications with surface mount termination. This connector features a 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The part is active in production with 772 units currently in stock. Equivalent parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application needs while maintaining electrical and mechanical compatibility.

Substiute Parts

0873814489

MolexIn Stock: 8120873814489 Datasheet

Current PartRFQ

MMS-122-02-F-DV

Samtec Inc.In Stock: 644MMS-122-02-F-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Samtec MMS-122-02-F-DV qualifies as an equivalent substitute based on the following critical parameters:

• Connector Type & Contact Configuration: Both are 44-position receptacle connectors with female socket contacts
• Pitch Specification: Identical 0.079" (2.00mm) mating pitch and row spacing
• Mounting & Termination: Both utilize surface mount with solder termination and push-pull fastening
• Contact Finish: Both feature gold-plated mating contacts
• Insulation Geometry: Matching 0.177" (4.50mm) insulation height
• Compliance: Both are ROHS3 compliant with MSL 1 rating
• Product Status: Both are active production parts

The substitution is valid for applications requiring interchangeable board-to-board rectangular connectors with identical mechanical and electrical interface specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0873814489 and Samtec MMS-122-02-F-DV are active production parts with ROHS3 compliance and MSL 1 ratings, suitable for equivalent substitution in board-to-board connector applications. The Samtec part offers an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C) and higher current rating per contact (3.9A versus 1.9A), providing additional performance margin in applications requiring these specifications. Selection between the two should be based on packaging requirements (Tape & Reel versus Tube), inventory availability, and specific thermal or current demands of the application.

Frequently Asked Questions (FAQ)

Q: Can the Samtec MMS-122-02-F-DV directly replace the Molex 0873814489 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.079"), position count (44), row configuration (2 rows), insulation height (0.177"), and fastening mechanism (push-pull). The mechanical and electrical interfaces are compatible for board-to-board applications.

Q: What is the significance of the difference in contact finish thickness?

A: The Molex part specifies 15.0µin (0.38µm) gold plating on mating contacts, while the Samtec part specifies 3.00µin (0.076µm). Both thicknesses are within industry standards for gold-plated connectors and do not affect substitution compatibility.

Q: Does the higher current rating of the Samtec part affect compatibility?

A: No. The Samtec MMS-122-02-F-DV's 3.9A per contact rating is a performance advantage and does not create compatibility issues. Applications designed for the Molex part's 1.9A rating will operate within the Samtec part's specifications.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The Molex 0873814489 is supplied in Tape & Reel (TR) packaging, while the Samtec MMS-122-02-F-DV is supplied in Tube packaging. Assembly processes and handling procedures may differ based on packaging format.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting equivalent environmental and regulatory requirements.