Molex 0874270243 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0874270243 is a vertical rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This component features a 2-position, 2-row shrouded configuration with male pin contacts and solder termination. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The substitute part maintains identical electrical and mechanical specifications while offering active product status and improved inventory availability.

Substiute Parts

0874270243

MolexIn Stock: 11360874270243 Datasheet

Current PartRFQ

0874270242

MolexIn Stock: 588730874270242 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0874270243 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part 0874270242 qualifies as a direct equivalent because it maintains identical specifications in the following key areas:

Connector configuration: 2-position, 2-row header with 0.165" (4.20mm) row spacing Contact system: Male pin, square-shaped brass contacts with tin finish Mounting and termination: Through-hole solder termination with locking ramp fastening Physical dimensions: Identical insulation height (0.504"), contact post length (0.130"), and shrouded 4-wall design Material and compliance: Polyamide (PA46) insulation, UL94 V-0 flammability rating, ROHS3 compliance, and REACH unaffected status Moisture sensitivity: MSL 1 (Unlimited)

The substitute part differs only in product status (Active versus Obsolete) and packaging format (Bulk versus standard), with significantly higher inventory availability (58,771 units versus 1,033 units).

Parameter Comparison

Engineering Selection Recommendations

The Molex 0874270242 is the direct functional equivalent for the obsolete Molex 0874270243. Both parts belong to the Mini-Fit Jr 87427 series and maintain complete electrical and mechanical compatibility across all specified parameters.

Selection of the 0874270242 is supported by the following factors:

Active product status ensures continued manufacturer support, documentation availability, and long-term supply chain stability compared to the obsolete 0874270243.

Identical compliance certifications (ROHS3, UL94 V-0, REACH Unaffected) confirm regulatory equivalence for applications in General Purpose, Industrial, and Telecommunications environments.

Bulk packaging format of the 0874270242 provides procurement flexibility and cost efficiency for production volumes, with significantly higher inventory availability (58,771 units).

All critical connector parameters remain unchanged: 2-position, 2-row configuration with 0.165" row spacing, through-hole solder termination, locking ramp fastening, and identical contact geometry and materials.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0874270242 be used as a direct replacement for the 0874270243 in existing designs?

A: Yes. The 0874270242 is electrically and mechanically identical to the 0874270243 across all specified parameters. Both parts share the same Mini-Fit Jr 87427 series designation, connector configuration, contact system, mounting method, and material specifications. No design modifications are required.

Q: What is the primary difference between these two part numbers?

A: The 0874270243 is classified as obsolete, while the 0874270242 maintains active product status. The 0874270242 is also supplied in bulk packaging format. These differences do not affect functional compatibility.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts carry identical compliance certifications: ROHS3 Compliant, UL94 V-0 flammability rating, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity level. Both are suitable for General Purpose, Industrial, and Telecommunications applications.

Q: Does packaging format affect the connector's performance or compatibility?

A: No. Packaging format (standard versus bulk) is a supply chain consideration only and does not impact electrical performance, mechanical fit, or functional compatibility. The connector specifications remain identical regardless of packaging.

Q: What is the row spacing specification, and why is it important for substitution?

A: The row spacing is 0.165" (4.20mm), which defines the distance between the two rows of contacts. This dimension is critical for mating with corresponding receptacle connectors. Both the 0874270243 and 0874270242 maintain identical row spacing, ensuring compatibility with existing mating components.

Q: Are the contact materials and finishes identical between the two parts?

A: Yes. Both parts feature brass contacts with tin finish on both mating and post surfaces. Contact finish thickness is identical at 100.0µin (2.54µm) for both mating and post finishes. Contact shape is square in both cases.

Q: What mounting method do these connectors use?

A: Both connectors use through-hole solder termination with locking ramp fastening. The insulation height is 0.504" (12.80mm), and the contact post length is 0.130" (3.30mm). These dimensions are identical between the two parts.