3M 3408-6002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-6002 is a through-hole rectangular connector header with 16 positions at 2.54mm pitch, featuring shrouded 4-wall design and push-pull fastening. This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design compatibility and ensure continued component availability for production and repair applications.

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)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1A

Substitute Part Grouping Explanation

Substitution for the 3408-6002 is determined by the following critical parameters: 16-position, 2-row configuration at 0.100" (2.54mm) pitch; through-hole solder termination; shrouded 4-wall design; male pin contact type; and push-pull fastening mechanism. All substitute parts maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories based on contact post length variation:

Category A - Standard Post Length (0.090" to 0.112"): Parts with post lengths between 0.090" and 0.112" accommodate standard PCB thicknesses and typical through-hole mounting applications.

Category B - Extended Post Length (0.155"): Parts with 0.155" post length provide additional engagement depth for applications requiring deeper PCB penetration or specific mechanical requirements.

The 3M N3408-6002RB represents the direct active equivalent from the original manufacturer. The D3408-6002-AR is the manufacturer-recommended upgrade. CW Industries CWN series parts (CWN-350-16-0021, CWN-351-16-0000, CWN-351-16-0021, CWN-352-16-0021, CWN-360-16-0000, CWN-360-16-0021, CWN-361-16-0000) and Amphenol ICC 71918-016LF provide cross-manufacturer alternatives meeting identical dimensional and electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Positions	Pitch	Fastening Type	Contact Post Length	Contact Material	Current Rating	Operating Temp	RoHS Status
3408-6002	3M	Obsolete	16 (2x8)	0.100"	Push-Pull	0.112"	Copper Alloy	1A	-55°C ~ 105°C	Non-compliant
N3408-6002RB	3M	Active	16 (2x8)	0.100"	Push-Pull	0.112"	Copper Alloy	1.75A	-55°C ~ 105°C	Compliant
D3408-6002-AR	3M	Active	16 (2x8)	0.100"	Push-Pull	0.112"	Brass	1.75A	-55°C ~ 105°C	ROHS3 Compliant
71918-016LF	Amphenol ICC (FCI)	Active	16 (2x8)	0.100"	Push-Pull	0.114"	Phosphor Bronze	Not specified	Not specified	Compliant
CWN-350-16-0021	CW Industries	Active	16 (2x8)	0.100"	Push-Pull	0.090"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-351-16-0000	CW Industries	Active	16 (2x8)	0.100"	Latch Lock/Eject Hooks, Short	0.090"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-351-16-0021	CW Industries	Active	16 (2x8)	0.100"	Latch Lock/Eject Hooks, Short	0.090"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-352-16-0021	CW Industries	Active	16 (2x8)	0.100"	Latch Lock/Eject Hooks, Long	0.090"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-360-16-0000	CW Industries	Active	16 (2x8)	0.100"	Push-Pull	0.155"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-360-16-0021	CW Industries	Active	16 (2x8)	0.100"	Push-Pull	0.155"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant
CWN-361-16-0000	CW Industries	Active	16 (2x8)	0.100"	Latch Lock/Eject Hooks, Short	0.155"	Phosphor Bronze	1A	-55°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: The 3M N3408-6002RB is the direct active equivalent from the original manufacturer, maintaining identical form factor and mechanical compatibility while offering improved current rating (1.75A vs 1A) and RoHS compliance.

Manufacturer-Recommended Upgrade: The 3M D3408-6002-AR (D3000 series) is designated as the manufacturer-recommended replacement, providing ROHS3 compliance and increased current capacity. This part is preferred for new designs and production transitions.

Cross-Manufacturer Alternatives: The Amphenol ICC 71918-016LF (Quickie™ series) provides an active alternative with RoHS compliance and identical pitch and position configuration. Contact post length is 0.114", within acceptable tolerance of the original 0.112".

CW Industries CWN Series: The CWN-350-16-0021, CWN-360-16-0000, and CWN-360-16-0021 maintain push-pull fastening identical to the original part. CWN-351 and CWN-352 series variants feature alternative fastening mechanisms (latch lock/eject hooks) and are suitable only where mechanical interface compatibility is confirmed. Extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin compared to the original specification (-55°C ~ 105°C).

All substitute parts maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity level. Selection should account for contact post length requirements specific to PCB thickness and application mounting depth.

Frequently Asked Questions (FAQ)

Q: Can the N3408-6002RB directly replace the obsolete 3408-6002?

A: Yes. The N3408-6002RB maintains identical mechanical dimensions, pitch, position count, and mounting configuration. It is the direct active equivalent from 3M with improved current rating and RoHS compliance.

Q: What is the difference between push-pull and latch lock fastening types?

A: Push-pull fastening (3408-6002, N3408-6002RB, D3408-6002-AR, CWN-350, CWN-360 series) uses a simple push-to-connect, pull-to-disconnect mechanism. Latch lock/eject hooks (CWN-351, CWN-352, CWN-361 series) provide mechanical locking with eject hook release. These are not interchangeable without mating connector redesign.

Q: Does contact post length affect compatibility?

A: Contact post length determines PCB penetration depth. The original 3408-6002 specifies 0.112" post length. Substitute parts with 0.090" (CWN-350, CWN-351, CWN-352) or 0.155" (CWN-360, CWN-361) post lengths require verification of PCB thickness and mounting clearance. The 71918-016LF at 0.114" is within acceptable tolerance.

Q: Are all substitute parts RoHS compliant?

A: The original 3408-6002 is RoHS non-compliant. All active substitute parts listed (N3408-6002RB, D3408-6002-AR, 71918-016LF, and all CWN series) are RoHS compliant or ROHS3 compliant, meeting current regulatory requirements.

Q: What is the current rating difference between the original and substitutes?

A: The original 3408-6002 is rated at 1A. The N3408-6002RB and D3408-6002-AR are rated at 1.75A. CWN series and 71918-016LF maintain 1A rating or do not specify current rating. Higher current rating provides design margin but does not affect mechanical compatibility.

Q: Can CWN series parts with different contact post lengths be mixed in the same application?

A: No. All connector positions within a single assembly must use identical post length to ensure uniform PCB engagement and contact reliability. Post length selection must be consistent across the entire connector.

Q: What packaging options are available?

A: Packaging varies by part number: N3408-6002RB (Bulk), D3408-6002-AR (Tray), 71918-016LF (Tube), CWN-350-16-0021 (Bulk), CWN-360-16-0000 (Bulk), CWN-360-16-0021 (Bulk). Packaging does not affect electrical or mechanical performance.

Q: Is the extended operating temperature range of CWN parts (-55°C ~ 125°C) a compatibility concern?

A: No. The extended range is a performance enhancement. Parts rated for -55°C ~ 125°C are fully compatible with applications requiring only -55°C ~ 105°C operation.

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