3M 3408-6302 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-6302 is a through-hole rectangular connector header with 16 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector features shrouded 4-wall construction with latch lock/eject hooks and is designed for board-to-board or cable applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	16
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Latch Lock/Eject Hooks, Long
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the 3408-6302 is determined by strict alignment of the following critical parameters:

Connector Type & Contact Configuration: Header with male pins, 16 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Shrouding & Mechanical Design: Shrouded 4-wall construction with keying slot and mounting flange
Mounting & Termination: Through-hole solder termination
Fastening Mechanism: Latch lock/eject hooks (long or standard variants acceptable)
Environmental Compliance: Operating temperature -55°C to 105°C, UL94 V-0 flammability rating
Contact Material & Finish: Gold-plated mating surface with tin or tin-lead post finish

Substitute parts are grouped into two categories:

Category A - Direct 3M Equivalents: Parts maintaining the 3000 or D3000 series designation with identical mechanical and electrical specifications. These include N3408-6302RB (active, RoHS compliant, bulk packaging) and D3408-6002-AR (active, ROHS3 compliant, tray packaging).

Category B - Cross-Manufacturer Alternatives: TE Connectivity AMP-Latch series (102321-3, 5102321-3, 2-5499206-3, 499206-3, 499922-3) and Amphenol ICC Quickie™ series (53611-G16-4LF, 53611-S16-4LF) that meet identical pitch, position count, shrouding, and fastening specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Positions	Pitch (mm)	Fastening Type	Current Rating (A)	Operating Temp (°C)	RoHS Status	Product Status
3408-6302	3M	3000	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-55 ~ 105	Non-compliant	Obsolete
N3408-6302RB	3M	3000	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.75	-55 ~ 105	Compliant	Active
D3408-6002-AR	3M	D3000	16 (2x8)	2.54	Push-Pull	1.75	-55 ~ 105	ROHS3 Compliant	Active
N3408-6002RB	3M	3000	16 (2x8)	2.54	Push-Pull	1.75	-55 ~ 105	Compliant	Active
102321-3	TE Connectivity AMP Connectors	AMP-Latch	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-65 ~ 105	Non-compliant	Active
5102321-3	TE Connectivity AMP Connectors	AMP-Latch	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-65 ~ 105	ROHS3 Compliant	Active
2-5499206-3	TE Connectivity AMP Connectors	AMP-Latch	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-65 ~ 105	ROHS3 Compliant	Active
499206-3	TE Connectivity AMP Connectors	AMP-Latch	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-65 ~ 105	Non-compliant	Active
499922-3	TE Connectivity AMP Connectors	AMP-Latch	16 (2x8)	2.54	Latch Lock/Eject Hooks, Long	1.0	-65 ~ 105	Not applicable	Active
53611-G16-4LF	Amphenol ICC (FCI)	Quickie™	16 (2x8)	2.54	Latch Lock/Eject Hooks	Not specified	Not specified	Compliant	Active
53611-S16-4LF	Amphenol ICC (FCI)	Quickie™	16 (2x8)	2.54	Latch Lock/Eject Hooks	Not specified	Not specified	Compliant	Active

Engineering Selection Recommendations

For RoHS Compliance Requirements: Select N3408-6302RB (3M, RoHS compliant, active status) or 5102321-3 (TE Connectivity, ROHS3 compliant, active status). Both maintain the original latch lock/eject hook fastening mechanism and support the full operating temperature range.

For Enhanced Current Rating: N3408-6302RB and D3408-6002-AR both provide 1.75A current rating compared to the original 1.0A specification, offering improved margin for higher-load applications while maintaining all other mechanical and thermal specifications.

For Extended Temperature Range: TE Connectivity AMP-Latch series parts (102321-3, 5102321-3, 2-5499206-3, 499206-3, 499922-3) support -65°C to 105°C operating range, extending the lower temperature limit by 10°C compared to the 3M original.

For Active Production Status: All substitute parts listed are in active production status. The original 3408-6302 is obsolete and should not be specified for new designs.

For Fastening Mechanism Compatibility: Parts with identical latch lock/eject hook fastening (long variant) are N3408-6302RB, 102321-3, 5102321-3, 2-5499206-3, 499206-3, 499922-3, 53611-G16-4LF, and 53611-S16-4LF. Parts with push-pull fastening (D3408-6002-AR, N3408-6002RB) require mechanical redesign of mating connector interfaces.

Frequently Asked Questions (FAQ)

Q: Can N3408-6302RB directly replace 3408-6302 without PCB redesign?

A: Yes. N3408-6302RB maintains identical mechanical dimensions, pitch spacing, shrouding configuration, and latch lock/eject hook fastening. The primary differences are RoHS compliance status and increased current rating (1.75A vs. 1.0A), both of which are backward compatible.

Q: What is the difference between latch lock/eject hooks (long) and push-pull fastening?

A: Latch lock/eject hooks (long) use mechanical latching tabs for secure mating and require specific mating connector designs. Push-pull fastening uses a different engagement mechanism. Parts with different fastening types (D3408-6002-AR, N3408-6002RB) require compatible mating connectors and may necessitate PCB layout changes.

Q: Are TE Connectivity AMP-Latch series parts mechanically compatible with 3M 3000 series?

A: TE Connectivity AMP-Latch parts maintain identical pitch (2.54mm), position count (16 in 2 rows), shrouding (4-wall), and latch lock/eject hook fastening. However, minor dimensional variations in contact length and insulation height exist. Verify mating connector compatibility before substitution.

Q: Which substitute parts are suitable for new product designs?

A: All listed substitute parts carry active product status. For new designs, prioritize parts with current RoHS compliance: N3408-6302RB (3M), 5102321-3 (TE Connectivity), 2-5499206-3 (TE Connectivity), 53611-G16-4LF (Amphenol ICC), or 53611-S16-4LF (Amphenol ICC).

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

A: Contact finish thickness affects durability and mating cycle life. The original 3408-6302 specifies 30.0µin (0.76µm) gold on mating contacts. Substitute parts maintain this specification or offer alternatives (10.0µin to 30.0µin). Thicker finishes provide extended contact life in high-cycle applications.

Q: Can Amphenol ICC Quickie™ series parts replace 3M connectors?

A: 53611-G16-4LF and 53611-S16-4LF maintain pitch, position count, shrouding, and latch fastening compatibility. However, contact material (phosphor bronze vs. copper alloy), insulation material (thermoplastic vs. PBT/PCT), and unspecified current/temperature ratings require application-specific validation before substitution.

Q: What packaging options are available for substitute parts?

A: N3408-6302RB is supplied in bulk packaging. D3408-6002-AR, 102321-3, 5102321-3, 2-5499206-3, 499206-3, 499922-3, 53611-G16-4LF, and 53611-S16-4LF are supplied in tray packaging. Verify packaging requirements for automated assembly processes.

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