3M 3408-1002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-1002 is a through-hole, right-angle rectangular connector header with 16 positions at 2.54mm pitch. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part features shrouded 3-wall construction, male pin contacts with gold mating finish, and solder termination suitable for board-to-board or cable applications. Active equivalent models from 3M and alternative manufacturers provide direct functional replacement with improved product status and compliance certifications.

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, Right Angle
Termination	Solder
Fastening Type	Push-Pull
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 for the 3408-1002 is determined by strict alignment of core electrical and mechanical parameters: 16-position, 2-row configuration at 2.54mm pitch; through-hole, right-angle mounting; male pin contacts; solder termination; and operating temperature range of -55°C to 105°C. Acceptable substitutes maintain these parameters while allowing variation in shrouding design (3-wall to 4-wall), contact material composition (copper alloy to brass or phosphor bronze), contact finish thickness specifications, and fastening mechanism (push-pull to latch lock). Packaging format and RoHS compliance status do not affect functional interchangeability. Termination method variation (solder to wire wrap) represents a functional difference and limits substitution scope to specific applications.

Parameter Comparison

Parameter	3408-1002	N3408-1002RB	D3408-5002-AR	N3408-5002RB	65823-061	65823-063	CWN-300-16-0021	CWN-320-16-0000
Manufacturer	3M	3M	3M	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	CW Industries	CW Industries
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Number of Positions	16	16	16	16	16	16	16	16
Number of Rows	2	2	2	2	2	2	2	2
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)
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
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Wire Wrap
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Shape	Square	Square	Square	Square	Circular	Circular	Circular	Circular
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Gold
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-	-	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating (Amps)	1.75A	1.75A	1.75A	1.75A	-	-	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	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Shrouding	Shrouded - 3 Wall	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Push-Pull	Push-Pull

Engineering Selection Recommendations

For direct replacement of the obsolete 3408-1002, the 3M N3408-1002RB provides the closest functional equivalence with identical electrical and mechanical specifications, active product status, and RoHS compliance. This part maintains the 3-wall shrouding, square contact geometry, and push-pull fastening of the original design while upgrading the contact finish post material from tin-lead to tin.

The 3M N3408-5002RB and D3408-5002-AR represent alternative 3M solutions with upgraded 4-wall shrouding and active status. The N3408-5002RB maintains copper alloy contacts and identical current rating, while D3408-5002-AR uses brass contacts with reduced mating finish thickness. Both support RoHS compliance requirements.

The Amphenol ICC 65823-061 and 65823-063 (Quickie™ series) provide functional substitution with latch lock fastening and circular contact geometry, introducing mechanical interface differences. These parts do not specify operating temperature or current rating parameters. The 65823-063 variant provides extended contact post length (0.150" vs. 0.105").

The CW Industries CWN-300-16-0021 and CWN-320-16-0000 offer extended operating temperature range (-55°C to 125°C) and RoHS3 compliance. The CWN-300-16-0021 maintains solder termination with reduced current rating (1A). The CWN-320-16-0000 uses wire wrap termination, limiting application scope to wire wrap assembly processes.

Selection should prioritize N3408-1002RB for direct replacement, N3408-5002RB for enhanced shrouding with maintained specifications, or CW Industries variants for extended temperature performance and RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can N3408-1002RB directly replace 3408-1002 in existing designs?

A: Yes. The N3408-1002RB maintains identical pitch (2.54mm), position count (16), row configuration (2), mounting type (through-hole right-angle), termination method (solder), and operating temperature range (-55°C to 105°C). The primary difference is contact finish post material change from tin-lead to tin and active product status.

Q: What is the functional difference between 3-wall and 4-wall shrouding?

A: Shrouding design affects mechanical keying and mating interface geometry. 3-wall shrouding (3408-1002, N3408-1002RB) provides keying in three directions. 4-wall shrouding (N3408-5002RB, D3408-5002-AR, Amphenol, CW Industries variants) provides complete perimeter keying. Both designs maintain the same electrical performance and 2.54mm pitch spacing.

Q: Are Amphenol 65823 series connectors compatible with 3M 3408 series?

A: Amphenol 65823-061 and 65823-063 maintain identical pitch (2.54mm), position count (16), row spacing (2.54mm), and mounting type (through-hole right-angle). However, they introduce mechanical differences: latch lock fastening instead of push-pull, circular contact geometry instead of square, and different contact post lengths. These differences require mechanical interface verification before substitution.

Q: What is the impact of contact material differences (copper alloy vs. brass vs. phosphor bronze)?

A: Contact material affects electrical conductivity, spring characteristics, and durability. Copper alloy (3M parts) and phosphor bronze (CW Industries, Amphenol) provide equivalent electrical performance for this application. Brass (D3408-5002-AR) also provides acceptable electrical performance. Material selection does not affect functional interchangeability for standard signal applications.

Q: Can CWN-320-16-0000 replace 3408-1002?

A: CWN-320-16-0000 maintains pitch, position count, and mounting type but uses wire wrap termination instead of solder. This represents a functional difference requiring assembly process compatibility verification. Wire wrap termination is not compatible with solder assembly processes.

Q: What compliance certifications are relevant for substitution?

A: RoHS compliance status differs between parts. The original 3408-1002 is RoHS non-compliant. Active equivalents N3408-1002RB, N3408-5002RB, and D3408-5002-AR are RoHS compliant. CW Industries variants (CWN-300-16-0021, CWN-320-16-0000) are ROHS3 compliant. Amphenol parts (65823-061, 65823-063) are RoHS non-compliant. Selection should align with design compliance requirements.

Q: Does contact finish thickness affect substitution compatibility?

A: Contact finish thickness variations (10.0µin to 30.0µin for mating surfaces) do not affect functional interchangeability for standard applications. These specifications ensure adequate corrosion protection and electrical performance across the specified operating temperature range.

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