3M 3428-1602UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-1602UG is a through-hole, right-angle rectangular connector header with 20 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This connector features shrouded 3-wall construction with latch lock/eject hooks and gold-plated mating contacts. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

3428-1602UG

3MIn Stock: 11143428-1602UG Datasheet

Current PartRFQ

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 3428-1602UG is determined by the following critical parameters:

• Connector Type & Contact Configuration: Header with male pins
• Position Count & Arrangement: 20 positions in 2-row configuration
• Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
• Mounting Style: Through-hole, right-angle orientation
• Operating Temperature: -55°C ~ 105°C range
• Flammability Rating: UL94 V-0 compliance
• Termination Method: Solder termination

The identified substitute parts D3428-5002-AR and N3428-5002RB maintain these core electrical and mechanical parameters. Variations in shrouding design (3-wall vs. 4-wall), fastening mechanism (latch lock vs. push-pull), contact material composition, and RoHS compliance status do not preclude substitution when the primary functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both D3428-5002-AR and N3428-5002RB are active production alternatives to the obsolete 3428-1602UG. Selection between these substitutes should be based on the following criteria:

D3428-5002-AR is recommended for applications requiring ROHS3 compliance with enhanced current capacity (1.75A vs. 1A). This part features 4-wall shrouding and push-pull fastening, with brass contact material and tin post finish. Packaging is provided in trays, suitable for automated assembly processes.

N3428-5002RB is recommended for applications where copper alloy contact material and bulk packaging are preferred. This part also provides ROHS3 compliance and 1.75A current rating with 4-wall shrouding and push-pull fastening. Tin post finish and copper alloy contacts maintain compatibility with legacy solder processes.

Both substitutes maintain the core electrical and mechanical specifications of the original part while offering improved product status and regulatory compliance. The increased insulation height (0.340" vs. 0.310") and higher current rating represent functional enhancements over the obsolete original.

Frequently Asked Questions (FAQ)

Q: Can D3428-5002-AR or N3428-5002RB be used as direct replacements for 3428-1602UG in existing designs?

A: Yes, both parts maintain the critical functional parameters: 20-position, 2-row configuration at 2.54mm pitch, through-hole right-angle mounting, and -55°C to 105°C operating range. The increased insulation height (0.340" vs. 0.310") and higher current rating (1.75A vs. 1A) represent improvements. Physical board layout compatibility should be verified due to the 0.030" increase in insulation height.

Q: What is the difference between the 3-wall and 4-wall shrouding designs?

A: The original 3428-1602UG uses 3-wall shrouding, while both substitutes use 4-wall shrouding. This provides additional mechanical protection and EMI shielding. The 4-wall design increases insulation height by 0.030" and may affect mating connector clearance in space-constrained applications.

Q: How do the fastening mechanisms differ between the original and substitute parts?

A: The 3428-1602UG uses latch lock/eject hooks with long engagement, while D3428-5002-AR and N3428-5002RB use push-pull fastening. Both mechanisms provide secure mating; however, the push-pull design offers different engagement force characteristics and may require different mating connector specifications.

Q: What is the significance of RoHS3 compliance in the substitute parts?

A: The original 3428-1602UG is RoHS non-compliant, while both substitutes are ROHS3 compliant. This compliance is required for applications subject to European Union Restriction of Hazardous Substances regulations. The substitutes eliminate lead from post finishes (tin vs. tin-lead), meeting modern environmental and regulatory requirements.

Q: Are there packaging differences between D3428-5002-AR and N3428-5002RB?

A: Yes. D3428-5002-AR is supplied in trays, optimized for automated pick-and-place assembly. N3428-5002RB is supplied in bulk packaging, suitable for manual assembly or alternative handling processes. Selection depends on manufacturing process requirements and inventory management practices.

Q: Does the increased current rating (1.75A vs. 1A) affect circuit design?

A: The higher current rating of the substitutes indicates improved contact performance and thermal characteristics. Existing designs rated for 1A operation remain fully compatible. Designs requiring higher current capacity can now utilize the full 1.75A rating of the substitute parts without redesign.