3M 3428-5202 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-5202 is a through-hole, right-angle rectangular connector header with 20 positions at 0.100" (2.54mm) pitch, designed for board-to-board or cable interconnection applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. Active alternatives maintain the same electrical and mechanical interface specifications while offering improved compliance status and availability.

Substiute Parts

3428-5202

3MIn Stock: 11643428-5202 Datasheet

Current PartRFQ

N3428-5202RB

3MIn Stock: 917N3428-5202RB Datasheet

DirectRFQ

D3428-5002-AR

3MIn Stock: 1422D3428-5002-AR Datasheet

MFR RecommendedRFQ

N3428-5002RB

3MIn Stock: 1360N3428-5002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3428-5202 is determined by the following critical parameters that must remain constant across all equivalent parts:

• Connector type (Header), contact type (Male Pin), and mating interface (20 positions, 2 rows, 0.100" pitch)
• Mounting configuration (Through Hole, Right Angle) and shrouding style (Shrouded - 4 Wall)
• Electrical performance (1.75A current rating, -55°C to 105°C operating range)
• Physical dimensions (contact lengths, insulation height, row spacing)
• Material flammability compliance (UL94 V-0)

The substitute parts identified maintain these core specifications. Variations in fastening type (Latch Lock/Eject Hooks versus Push-Pull), contact material composition (Copper Alloy versus Brass), insulation material formulation (PBT versus PCT), and contact finish thickness are permitted within the functional equivalence range, as these do not affect mating compatibility or primary electrical performance in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (N3428-5202RB, D3428-5002-AR, N3428-5002RB) maintain full electrical and mechanical compatibility with the original 3428-5202 specification for mating interface and performance envelope.

N3428-5202RB and N3428-5002RB are direct functional equivalents within the 3000 series, both offering ROHS3 compliance and active product status. N3428-5202RB preserves the original Latch Lock/Eject Hooks fastening mechanism, while N3428-5002RB implements Push-Pull fastening. Both use Copper Alloy contacts and PCT insulation material.

D3428-5002-AR represents the manufacturer-recommended upgrade path, belonging to the D3000 series with active status and ROHS3 compliance. This part incorporates Brass contacts and Push-Pull fastening, with reduced gold plating thickness on mating contacts (10.0µin versus 30.0µin) and reduced tin plating thickness on posts (39.4µin versus 200.0µin). The D3000 series designation indicates a design evolution from the original 3000 series.

Selection between these alternatives depends on application requirements for fastening mechanism preference and series compatibility. All parts satisfy the core electrical performance, temperature range, current rating, and flammability requirements of the original specification.

Frequently Asked Questions (FAQ)

Q: Can N3428-5202RB be used as a direct replacement for 3428-5202?

A: Yes. N3428-5202RB maintains identical mating pitch (0.100"), position count (20), row configuration (2 rows), mounting style (Through Hole, Right Angle), shrouding (Shrouded - 4 Wall), and fastening type (Latch Lock/Eject Hooks, Short). Electrical performance (1.75A, -55°C to 105°C) and physical dimensions are equivalent. The primary difference is ROHS3 compliance status and active product availability.

Q: What is the difference between Latch Lock/Eject Hooks and Push-Pull fastening?

A: Latch Lock/Eject Hooks (3428-5202, N3428-5202RB) use mechanical latching hooks for secure mating and require deliberate unlatching for disconnection. Push-Pull (D3428-5002-AR, N3428-5002RB) fastening allows connection and disconnection through axial push-pull motion. Both provide equivalent electrical performance and mechanical retention in standard applications. Selection depends on connector accessibility and user interface requirements in the target application.

Q: Are there compatibility concerns between 3000 series and D3000 series connectors?

A: The 3000 and D3000 series maintain identical mating interface specifications (pitch, position count, row spacing, contact geometry). Mechanical and electrical compatibility is preserved. The D3000 series represents a design evolution with updated materials (PCT insulation, Brass contacts) and compliance certifications. Both series can be used interchangeably in applications where the mating interface is the primary compatibility criterion.

Q: What is the significance of contact finish thickness differences?

A: Contact finish thickness variations (gold plating 30.0µin versus 10.0µin; tin plating 200.0µin versus 39.4µin) do not affect mating compatibility or electrical performance in standard applications. Thicker finishes provide extended contact life under high-cycle mating scenarios. Selection should be based on application duty cycle and connector reuse requirements.

Q: Why is the original 3428-5202 classified as obsolete?

A: The 3428-5202 is obsolete due to RoHS non-compliance and supersession by active alternatives. All substitute parts (N3428-5202RB, D3428-5002-AR, N3428-5002RB) offer ROHS3 compliance, active manufacturing status, and equivalent or improved specifications. Procurement should transition to active alternatives for new designs and ongoing support.

Q: Does packaging type affect electrical or mechanical performance?

A: No. Packaging differences (Bulk versus Tray) are logistics and handling considerations only. Electrical performance, mechanical dimensions, and mating interface specifications are identical regardless of packaging format. Selection should be based on procurement volume and inventory management requirements.