3M 3428-2602UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-2602UG is a shrouded rectangular connector header designed for through-hole board-to-board or cable applications. This 20-position, 2-row connector operates at 0.100" (2.54mm) pitch and supports 1A current rating across an operating temperature range of -55°C to 105°C. The part is currently obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications.

Substiute Parts

3428-2602UG

3MIn Stock: 10893428-2602UG Datasheet

Current PartRFQ

N3428-2302RB

3MIn Stock: 765N3428-2302RB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3M N3428-2302RB qualifies as a direct substitute for the 3428-2602UG based on the following critical parameters:

• Identical connector type, contact type, and position configuration (20-position, 2-row header)
• Matching pitch specifications (0.100" mating pitch and row spacing)
• Identical mounting method (through-hole solder termination)
• Matching shrouding design (shrouded 3-wall configuration)
• Identical operating temperature range (-55°C ~ 105°C)
• Equivalent material flammability rating (UL94 V-0)
• Compatible contact geometry and overall dimensions

The N3428-2302RB maintains all mechanical and electrical compatibility requirements for direct substitution in applications originally designed for the 3428-2602UG.

Parameter Comparison

Engineering Selection Recommendations

The N3428-2302RB is the active equivalent for the obsolete 3428-2602UG. Selection of the N3428-2302RB provides the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance meets current regulatory requirements, whereas the original part is RoHS non-compliant
• Higher current rating (1.75A versus 1A) provides increased design margin for applications within the original 1A specification
• Identical mechanical and electrical interface specifications ensure direct compatibility with existing PCB layouts and mating connectors
• Equivalent operating temperature range and flammability rating maintain performance characteristics across all environmental conditions

Frequently Asked Questions (FAQ)

Q: Can the N3428-2302RB be used as a direct replacement for the 3428-2602UG?

A: Yes. Both connectors share identical pitch (0.100"), position count (20), row configuration (2 rows), shrouding design (3-wall), mounting method (through-hole), and operating temperature range (-55°C to 105°C). All mechanical and electrical interface parameters are equivalent.

Q: What is the difference in current rating between these parts?

A: The 3428-2602UG is rated for 1A, while the N3428-2302RB is rated for 1.75A. Applications designed for the original 1A specification operate safely within the higher rating of the substitute part.

Q: Does the N3428-2302RB meet RoHS requirements?

A: Yes. The N3428-2302RB is ROHS3 compliant. The original 3428-2602UG is RoHS non-compliant. Selection of the substitute part satisfies current RoHS regulatory requirements.

Q: Are the contact finishes identical?

A: The mating contact finish is gold for both parts. The mating contact finish thickness differs (15.0µin for the original versus 30.0µin for the substitute), and the post finish differs (tin-lead versus tin). These variations do not affect mechanical or electrical compatibility.

Q: What is the packaging difference?

A: The 3428-2602UG packaging is listed as unspecified. The N3428-2302RB is supplied in bulk packaging. Verify packaging requirements for your procurement process.

Q: Are the insulation materials the same?

A: The insulation material differs slightly. The 3428-2602UG uses polybutylene terephthalate (PBT), while the N3428-2302RB uses polycyclohexylenedimethylene terephthalate (PCT). Both are polyester glass-filled materials with identical UL94 V-0 flammability ratings and equivalent performance characteristics.