3M 3428-6605 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-6605 is a shrouded rectangular connector header designed for through-hole mounting in board-to-board or cable applications. This 20-position, 2-row connector operates across -55°C to 105°C and features gold-plated square contacts with wire wrap termination. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and component sourcing.

Substiute Parts

3428-6605

3MIn Stock: 7653428-6605 Datasheet

Current PartRFQ

D3428-6002-AR

3MIn Stock: 1201D3428-6002-AR Datasheet

MFR RecommendedRFQ

N3428-6002RB

3MIn Stock: 1411N3428-6002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3428-6605 is determined by the following critical parameters:

• Connector Type & Contact Configuration: Must be Header with Male Pin contacts
• Position & Row Configuration: Must maintain 20 positions in 2 rows
• Pitch Specifications: Mating pitch and row spacing must both be 0.100" (2.54mm)
• Shrouding & Mounting: Must be shrouded with 4-wall design and through-hole mounting
• Operating Temperature Range: Must support -55°C to 105°C minimum
• Flammability & Safety: Must meet UL94 V-0 rating
• Moisture Sensitivity: Must be MSL 1 or equivalent

The two substitute parts listed—D3428-6002-AR and N3428-6002RB—meet all critical electrical and mechanical parameters. Differences in termination method (solder vs. wire wrap), contact material composition, and packaging do not affect functional interchangeability in applications where the mating interface and environmental specifications are the primary design constraints.

Parameter Comparison

Engineering Selection Recommendations

Both D3428-6002-AR and N3428-6002RB are active production parts from 3M that satisfy all critical electrical and mechanical compatibility requirements with the obsolete 3428-6605.

D3428-6002-AR is recommended for applications requiring RoHS compliance certification. This part is packaged in trays and features solder termination with push-pull fastening. The brass contact material and PCT insulation provide equivalent performance within the specified operating envelope.

N3428-6002RB is recommended for applications where bulk packaging is preferred or cost optimization is a priority. This part maintains ROHS3 compliance and offers solder termination with push-pull fastening. The copper alloy contact material and PCT insulation ensure functional equivalence.

Both substitutes provide higher current ratings (1.75A vs. 1A) than the original part, offering improved margin for applications operating near maximum current specifications. The transition from wire wrap to solder termination requires PCB design modification but does not affect electrical performance or environmental ratings.

Frequently Asked Questions (FAQ)

Q: Can D3428-6002-AR and N3428-6002RB be used interchangeably with 3428-6605?

A: Yes. Both parts maintain identical mating pitch (0.100"), row spacing (0.100"), position count (20 in 2 rows), shrouding configuration (4-wall), and operating temperature range (-55°C to 105°C). The mating interface is functionally equivalent.

Q: What is the primary difference between the two substitute parts?

A: D3428-6002-AR is packaged in trays and carries RoHS Compliant certification. N3428-6002RB is packaged in bulk and carries ROHS3 Compliant certification. Both use solder termination and push-pull fastening. Contact material differs (brass vs. copper alloy), but this does not affect electrical performance within the specified parameters.

Q: Does the change from wire wrap to solder termination affect compatibility?

A: The termination method requires PCB design modification. Wire wrap termination (3428-6605) uses longer posts for wrapping around PCB pads, while solder termination (D3428-6002-AR and N3428-6002RB) uses shorter posts for through-hole soldering. The mating interface remains identical; only the PCB footprint and assembly process change.

Q: Are the substitute parts suitable for high-reliability applications?

A: Both substitute parts meet UL94 V-0 flammability requirements and maintain MSL 1 (Unlimited) moisture sensitivity ratings, equivalent to the original part. RoHS and ROHS3 compliance certifications are provided for regulatory requirements.

Q: What is the current rating difference, and does it matter?

A: The original 3428-6605 is rated for 1A per contact, while both substitutes are rated for 1.75A per contact. This higher rating provides additional design margin and does not restrict use in applications designed for the original 1A specification.

Q: Which substitute should be selected for new designs?

A: For new designs, either part is acceptable. D3428-6002-AR is preferred if RoHS compliance documentation is required. N3428-6002RB is preferred for cost-optimized production volumes. Both parts are in active production with established supply chains.