3M 3408-5002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-5002 is a through-hole, right-angle rectangular connector header with 16 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This part operates across the -55°C to 105°C temperature range with a 1.75A current rating per contact. The 3408-5002 is classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	16
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: connector type (header), contact type (male pin), mating pitch (2.54mm), position count (16), row configuration (2 rows), mounting method (through hole, right angle), shrouding style (shrouded 4-wall), termination type (solder), and flammability rating (UL94 V-0).

The substitute parts are grouped into two categories:

Direct 3M Series Substitutes: Parts N3408-5002RB and D3408-5002-AR maintain the 3M connector family lineage with identical mechanical and electrical interfaces. N3408-5002RB is the active production equivalent with RoHS compliance. D3408-5002-AR is the recommended alternative for board-to-cable applications with enhanced compliance status.

Cross-Manufacturer Alternatives: Parts from Amphenol ICC (FCI) and CW Industries provide functionally equivalent 16-position, 2.54mm pitch headers with identical shrouding, mounting, and termination characteristics. These alternatives accommodate applications requiring multi-source qualification or specific fastening mechanisms (push-pull versus latch-lock configurations).

Parameter Comparison

Parameter	3408-5002	N3408-5002RB	D3408-5002-AR	71922-016LF	CWN-500-16-0021	CWN-502-16-0021	CWN-512-16-0000	CWN-512-16-0021
Manufacturer	3M	3M	3M	Amphenol ICC (FCI)	CW Industries	CW Industries	CW Industries	CW Industries
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	16	16	16	16	16	16	16	16
Number of Rows	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.114" (2.90mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.155" (3.94mm)	0.155" (3.94mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.339" (8.61mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Shape	Square	Square	Square	Square	Circular	Circular	Circular	Circular
Contact Finish - Mating	Gold	Gold	Gold	Gold, GXT™	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Nickel	Nickel	Nickel	Nickel
Contact Material	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1.75A	1.75A	1.75A	Not specified	1A	1A	1A	1A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: N3408-5002RB

The N3408-5002RB is the direct active equivalent of the obsolete 3408-5002. This part maintains identical mechanical and electrical specifications while providing RoHS compliance. The N3408-5002RB is the preferred choice for new designs and direct replacement applications where 3M connector ecosystem continuity is required.

Secondary Recommendation: D3408-5002-AR

The D3408-5002-AR is the manufacturer-recommended alternative for board-to-cable applications. This part is RoHS compliant and part of the 3M D3000 series. Selection of D3408-5002-AR is appropriate when cable-to-board interconnection is the primary application requirement.

Cross-Manufacturer Alternatives: Amphenol ICC 71922-016LF

The 71922-016LF from Amphenol ICC (FCI) is a functionally equivalent header from the Quickie™ series. This part is RoHS compliant and suitable for applications requiring multi-source qualification. Note that operating temperature range is not specified for this part.

Cross-Manufacturer Alternatives: CW Industries CWN Series

The CW Industries CWN series (CWN-500-16-0021, CWN-502-16-0021, CWN-512-16-0000, CWN-512-16-0021) provides push-pull and latch-lock fastening options with extended operating temperature range (-55°C to 125°C). These parts are ROHS3 compliant. Selection depends on fastening mechanism requirements and post contact length specifications for PCB stack-up accommodation.

Frequently Asked Questions (FAQ)

Q: Can N3408-5002RB be used as a direct replacement for 3408-5002?

A: Yes. The N3408-5002RB maintains identical mating pitch (2.54mm), position count (16), row configuration (2 rows), mounting method (through hole, right angle), shrouding (4-wall), and termination (solder). The primary difference is RoHS compliance status and contact finish material on the post (tin versus tin-lead).

Q: What are the key differences between the 3M substitutes and cross-manufacturer alternatives?

A: The 3M substitutes (N3408-5002RB and D3408-5002-AR) maintain the 3M connector family with square contact shapes and copper alloy or brass contact materials. Cross-manufacturer alternatives from Amphenol ICC and CW Industries feature circular contact shapes and phosphor bronze materials. All maintain the core 2.54mm pitch, 16-position, 2-row, shrouded 4-wall configuration.

Q: Are there fastening mechanism differences between substitute options?

A: Yes. The 3M parts and Amphenol ICC 71922-016LF use push-pull fastening. The CW Industries CWN-502, CWN-512 series use latch-lock/eject hooks with long engagement. CWN-500-16-0021 retains push-pull fastening. Fastening mechanism selection depends on mating connector availability and application requirements.

Q: What is the significance of contact post length variations?

A: Contact post length determines PCB stack-up accommodation. The 3408-5002 and N3408-5002RB specify 0.112" (2.84mm) post length. CWN-500 and CWN-502 series specify 0.090" (2.29mm), while CWN-512 series specify 0.155" (3.94mm). Post length selection must align with PCB thickness and solder joint requirements.

Q: Do all substitutes meet the same temperature operating range?

A: No. The 3408-5002, N3408-5002RB, and D3408-5002-AR operate across -55°C to 105°C. The CW Industries CWN series extends to -55°C to 125°C. The Amphenol ICC 71922-016LF does not specify operating temperature. Application temperature requirements must be verified against selected substitute.

Q: What is the current rating difference between parts?

A: The 3408-5002, N3408-5002RB, and D3408-5002-AR are rated at 1.75A per contact. The CW Industries CWN series and Amphenol ICC 71922-016LF are rated at 1A per contact. Applications requiring 1.75A per contact must use 3M parts or verify CW Industries/Amphenol ICC current capacity through detailed specifications.

Q: Are there RoHS compliance considerations for part selection?

A: The original 3408-5002 is RoHS non-compliant. All active substitutes are RoHS compliant (N3408-5002RB and D3408-5002-AR are RoHS compliant; CW Industries parts are ROHS3 compliant; Amphenol ICC 71922-016LF is RoHS compliant). New designs must use RoHS-compliant alternatives.

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