Molex 0874270403 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0874270403 is a right-angle rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This Mini-Fit Jr 87427 series component features a 4-position, 2-row configuration with 0.165" (4.20mm) pitch and shrouded design with 4-wall protection. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

0874270403

MolexIn Stock: 11770874270403 Datasheet

Current PartRFQ

0874270402

MolexIn Stock: 394470874270402 Datasheet

DirectRFQ

0039291048

MolexIn Stock: 970120039291048 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0874270403 is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Connector type: Header
• Contact type: Male Pin
• Number of positions: 4
• Number of rows: 2
• Pitch - mating: 0.165" (4.20mm)
• Row spacing - mating: 0.165" (4.20mm)
• Mounting type: Through Hole, Right Angle
• Shrouding: Shrouded - 4 Wall
• Termination: Solder
• Fastening type: Locking Ramp
• Contact material: Brass
• Contact finish - mating: Tin
• Contact finish thickness - mating: 100.0µin (2.54µm)
• Style: Board to Cable/Wire
• Applications: General Purpose, Industrial, Telecommunications

Acceptable Variation Parameters:

• Insulation material composition (PA46 vs PA66)
• Insulation color (Beige vs Natural)
• Material flammability rating (UL94 V-0 vs UL94 V-2)
• Contact length - post (within 0.012" tolerance)
• Insulation height (within 0.016" tolerance)
• Packaging format (Tray, Bulk, or standard packaging)
• Product status (Active substitutes acceptable for Obsolete main part)

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

Molex 0874270402 is the primary direct substitute for the obsolete 0874270403. Both parts share identical electrical and mechanical specifications, including contact post length (0.130"), insulation height (0.394"), insulation material (PA46 Nylon 4/6), flammability rating (UL94 V-0), and color (Beige). The 0874270402 is currently in active production status with significantly higher inventory availability (39,411 pieces). This part is recommended as the first-choice replacement for direct compatibility.

Molex 0039291048 is the manufacturer-recommended alternative from the Mini-Fit Jr 5569 series. This part maintains all critical mating parameters and mechanical compatibility but incorporates design variations: contact post length of 0.142" (0.012" longer), insulation height of 0.378" (0.016" shorter), PA66 Nylon 6/6 insulation material, UL94 V-2 flammability rating, and natural insulation color. The inclusion of a mounting flange provides additional mechanical stability. This part is suitable for applications where the dimensional and material variations are acceptable and where the enhanced mechanical retention is beneficial. Inventory availability is highest at 96,994 pieces.

Both substitute parts maintain ROHS3 compliance, MSL 1 rating, and are suitable for General Purpose, Industrial, and Telecommunications applications.

Frequently Asked Questions (FAQ)

Q: Can the 0874270402 be used as a direct replacement for the 0874270403?

A: Yes. The 0874270402 is a direct substitute with identical electrical and mechanical specifications. Both parts are from the same Mini-Fit Jr 87427 series, share the same contact post length (0.130"), insulation height (0.394"), insulation material (PA46), and flammability rating (UL94 V-0). The primary difference is packaging format and product status (0874270402 is active production).

Q: What are the key differences between the 0874270402 and 0039291048?

A: The 0039291048 differs in four areas: contact post length (0.142" vs 0.130"), insulation height (0.378" vs 0.394"), insulation material (PA66 vs PA46), and flammability rating (UL94 V-2 vs UL94 V-0). The 0039291048 also includes a mounting flange and is from the Mini-Fit Jr 5569 series. All other parameters, including mating pitch, row spacing, shrouding, and termination, remain identical.

Q: Are the dimensional variations in the 0039291048 significant for PCB design?

A: The contact post length difference of 0.012" and insulation height difference of 0.016" are within typical tolerance ranges for through-hole connector applications. However, these variations should be evaluated against specific PCB design requirements, particularly for applications with tight vertical clearance constraints or where precise stacking heights are critical.

Q: Does the change from PA46 to PA66 insulation material affect performance?

A: Both PA46 and PA66 are polyamide materials suitable for connector applications. PA66 offers slightly different thermal and mechanical properties. The material change in the 0039291048 is accompanied by a lower flammability rating (UL94 V-2 vs UL94 V-0). Applications requiring UL94 V-0 certification should use the 0874270402 or original 0874270403.

Q: What does the mounting flange on the 0039291048 provide?

A: The mounting flange on the 0039291048 provides additional mechanical retention and alignment on the PCB. This feature enhances board-level stability and is beneficial in applications subject to vibration or mechanical stress.

Q: Are all three parts RoHS3 compliant?

A: Yes. The 0874270403, 0874270402, and 0039291048 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute should be selected for new designs?

A: For new designs, the 0874270402 is recommended as the primary choice due to identical specifications to the original part and active production status. The 0039291048 is suitable if the dimensional and material variations are acceptable and the mounting flange provides design benefits.