3M 3428-6405 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-6405 is a shrouded vertical rectangular connector header designed for through-hole mounting with 20 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector features wire wrap termination and is part of the 3000 series connector family. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

3428-6405

3MIn Stock: 8423428-6405 Datasheet

Current PartRFQ

3428-6305

3MIn Stock: 14783428-6305 Datasheet

MFR RecommendedRFQ

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 3428-6405 is determined by the following critical parameters that must remain constant:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (20) and row configuration (2 rows)
• Mating pitch (0.100" / 2.54mm)
• Row spacing (0.100" / 2.54mm)
• Mounting method (Through Hole)
• Shrouding configuration (Shrouded - 4 Wall)
• Operating temperature range (-55°C ~ 105°C)
• Flammability rating (UL94 V-0)
• Moisture sensitivity level (1 - Unlimited)

The three substitute parts identified (3428-6305, D3428-6002-AR, and N3428-6002RB) maintain these core parameters. Variations exist in termination method, fastening type, contact finish specifications, and insulation material composition, which are secondary considerations for mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

3428-6305 is the primary substitute for wire wrap termination applications. This part maintains identical mechanical and electrical specifications to the 3428-6405 while offering active product status and ROHS3 compliance. The fastening mechanism differs (Latch Lock/Eject Hooks, Long versus Ejector), and the post finish changes from gold to tin-lead, but these variations do not affect functional compatibility in standard through-hole mounting scenarios.

D3428-6002-AR and N3428-6002RB are suitable alternatives for applications requiring solder termination instead of wire wrap. Both parts provide higher current ratings (1.75A versus 1A) and active product status. D3428-6002-AR uses brass contacts with PCT insulation material, while N3428-6002RB maintains copper alloy contacts with PCT insulation. Both employ push-pull fastening and tin post finish. These parts are appropriate for new designs or system upgrades where solder termination is preferred.

Selection should prioritize active product status parts (3428-6305, D3428-6002-AR, N3428-6002RB) over the obsolete 3428-6405. For legacy system maintenance requiring wire wrap termination, 3428-6305 is the recommended choice. For new implementations, evaluate termination method requirements and select accordingly between wire wrap (3428-6305) or solder (D3428-6002-AR or N3428-6002RB) options.

Frequently Asked Questions (FAQ)

Q: Can the 3428-6305 directly replace the 3428-6405 in existing assemblies?

A: Yes. The 3428-6305 maintains identical mating pitch (0.100" / 2.54mm), row configuration (2 rows, 20 positions), mounting type (through hole), and shrouding (4 wall). Both use wire wrap termination. The fastening mechanism and post finish differ, but these do not prevent mechanical or electrical compatibility in standard applications.

Q: What is the primary difference between the wire wrap option (3428-6305) and solder options (D3428-6002-AR, N3428-6002RB)?

A: Termination method is the primary difference. The 3428-6305 uses wire wrap termination with an ejector fastening mechanism, suitable for applications using wire wrap assembly techniques. The D3428-6002-AR and N3428-6002RB use solder termination with push-pull fastening, appropriate for PCB soldering processes. Mating and row spacing remain identical across all options.

Q: Are there compliance differences between substitute parts?

A: Yes. The 3428-6305 and N3428-6002RB are ROHS3 compliant, while D3428-6002-AR is RoHS compliant. All three maintain UL94 V-0 flammability rating and unlimited moisture sensitivity level (MSL 1). Selection should consider specific regulatory requirements for the target application.

Q: Does the current rating difference (1A versus 1.75A) affect compatibility?

A: The higher current rating of D3428-6002-AR and N3428-6002RB (1.75A) indicates improved current handling capability compared to the 3428-6405 (1A). These parts are suitable for applications requiring the original 1A rating and for applications requiring up to 1.75A. The higher rating does not create incompatibility; it provides additional design margin.

Q: What packaging options are available for these substitute parts?

A: The 3428-6305 is supplied in bulk packaging. The D3428-6002-AR is supplied in tray packaging. The N3428-6002RB is supplied in bulk packaging. Packaging selection should align with procurement and assembly process requirements.

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

A: Both parts maintain identical mating pitch, position count, row configuration, operating temperature range, and flammability rating. The primary differences are contact material (brass in D3428-6002-AR versus copper alloy in N3428-6002RB) and insulation material composition (both use PCT polyester glass-filled material). For most applications, these parts are functionally interchangeable, though contact material selection may influence performance in specific electrical environments.