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

Part Overview

The 3M 3408-1002UG is a through-hole, right-angle rectangular connector header with 16 positions at 2.54mm pitch. This connector features shrouded 3-wall design with male pins, solder termination, and push-pull fastening. The part is classified as obsolete, making equivalent substitute parts 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
Termination	Solder
Current Rating	1.75A
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitute parts for the 3408-1002UG are grouped based on the following critical parameters that determine functional equivalence:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 16
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Termination: Solder
Material Flammability Rating: UL94 V-0

Substitutes are organized into two categories:

Category 1: 3M Direct Replacements - Parts from 3M's active product lines (D3000 and 3000 series) that maintain identical electrical and mechanical specifications with improved compliance status.

Category 2: Cross-Manufacturer Alternatives - Parts from Amphenol ICC (FCI) Quickie™ series and CW Industries CWN series that meet core dimensional and electrical requirements but may differ in contact geometry, fastening mechanism, or material composition.

Parameter Comparison

Parameter	3408-1002UG	D3408-5002-AR	N3408-5002RB	65823-210LF	65823-063	CWN-300-16-0021	CWN-301-16-0021
Manufacturer	3M	3M	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	CW Industries	CW Industries
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
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)
Number of Positions	16	16	16	16	16	16	16
Number of Rows	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)
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
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Shrouding	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Shape	Square	Square	Square	Circular	Circular	Circular	Circular
Contact Material	Copper Alloy	Brass	Copper Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Gold	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin	—	—	Nickel	Nickel
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks	Push-Pull	Latch Lock/Eject Hooks, Short
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	—	—	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	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	ROHS3 Compliant	ROHS3 Compliant
Current Rating (Amps)	1.75A	1.75A	1.75A	—	—	1A	1A

Engineering Selection Recommendations

Primary Recommendation: D3408-5002-AR (3M D3000 Series)

The D3408-5002-AR is the manufacturer-recommended replacement for the obsolete 3408-1002UG. This part maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. The D3000 series represents 3M's current generation connector technology with improved shrouding (4-wall vs. 3-wall) and updated contact finish specifications. Packaging is available in Tray format.

Secondary Recommendation: N3408-5002RB (3M 3000 Series)

The N3408-5002RB provides an alternative within 3M's active 3000 series lineup. This part maintains full compatibility with the original 3408-1002UG while offering RoHS compliance and bulk packaging. The N3408 base product number indicates this variant within the established 3000 series family.

Cross-Manufacturer Alternatives: Amphenol ICC (FCI) Quickie™ Series

The 65823-210LF and 65823-300LF represent active alternatives from Amphenol ICC (FCI). These parts maintain core dimensional compatibility (16 positions, 2.54mm pitch, 2 rows) and meet UL94 V-0 flammability requirements. Key differences include circular contact geometry versus square, latch lock fastening versus push-pull, and RoHS compliance status. The 65823-210LF is RoHS compliant; 65823-063 is not.

Cross-Manufacturer Alternatives: CW Industries CWN Series

The CWN-300-16-0021 and CWN-301-16-0021 offer dimensional equivalence with extended operating temperature range (-55°C to 125°C). These parts feature circular contacts, phosphor bronze material, and nickel post finish. Both variants are ROHS3 compliant. Current rating is specified at 1A, which is lower than the original 1.75A specification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 3408-1002UG with D3408-5002-AR without PCB redesign?

A: Yes. The D3408-5002-AR maintains identical pitch (2.54mm), position count (16), row configuration (2 rows), and mounting type (through-hole, right-angle). The primary difference is improved shrouding (4-wall vs. 3-wall), which provides better mechanical protection without affecting footprint compatibility.

Q: What is the key difference between 3M substitutes (D3408-5002-AR, N3408-5002RB) and cross-manufacturer options (Amphenol ICC, CW Industries)?

A: 3M substitutes maintain the original contact geometry (square pins) and fastening mechanism (push-pull). Cross-manufacturer alternatives use circular contacts and may employ different fastening systems (latch lock/eject hooks). Both approaches meet the core electrical and mechanical requirements, but contact geometry and fastening type may affect mating connector compatibility.

Q: Are the Amphenol ICC Quickie™ series parts (65823-210LF, 65823-063) fully compatible with the original 3408-1002UG?

A: These parts are dimensionally and electrically compatible at the header level (16 positions, 2.54mm pitch, 2 rows, through-hole right-angle mounting). However, the circular contact geometry and latch lock fastening differ from the original square-pin push-pull design. Mating connectors must be selected accordingly.

Q: What is the significance of the shrouding difference (3-wall vs. 4-wall)?

A: Shrouding provides mechanical protection and keying guidance during mating. The 4-wall shrouding in substitute parts offers enhanced protection compared to the original 3-wall design. This is a functional improvement that does not affect electrical performance or PCB footprint compatibility.

Q: Why do some substitute parts list operating temperature as "—" (not specified)?

A: The Amphenol ICC Quickie™ series parts (65823-210LF, 65823-063, 65823-300LF) do not provide explicit operating temperature specifications in the available data. The original 3408-1002UG and 3M substitutes specify -55°C to 105°C. CW Industries parts extend this to -55°C to 125°C.

Q: What packaging options are available for substitutes?

A: D3408-5002-AR is available in Tray packaging. N3408-5002RB is available in Bulk. Amphenol ICC parts are available in both Bulk (65823-063, 65823-210) and Tray (65823-210LF, 65823-300LF) formats. CW Industries parts do not specify packaging format in the provided data.

Q: How does RoHS compliance affect part selection?

A: The original 3408-1002UG is RoHS non-compliant. For new designs or applications requiring RoHS compliance, select D3408-5002-AR, N3408-5002RB, 65823-210LF, CWN-300-16-0021, or CWN-301-16-0021. The 65823-063 remains RoHS non-compliant.

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

A: The original 3408-1002UG is rated at 1.75A per contact. CW Industries CWN series parts (CWN-300-16-0021, CWN-301-16-0021) are rated at 1A per contact. For applications requiring the full 1.75A rating, select 3M or Amphenol ICC alternatives.

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