3M 3408-2002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-2002 is a through-hole rectangular connector header with 16 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The part features shrouded 3-wall construction, gold-plated mating contacts, and tin-lead post plating, suitable for board-to-board or cable interconnection applications.

Substiute Parts

3408-2002

3MIn Stock: 8043408-2002 Datasheet

Current PartRFQ

D3408-6002-AR

3MIn Stock: 6604D3408-6002-AR Datasheet

MFR RecommendedRFQ

N3408-6002RB

3MIn Stock: 817N3408-6002RB Datasheet

MFR RecommendedRFQ

CWN-350-16-0021

CW IndustriesIn Stock: 1034CWN-350-16-0021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3408-2002 is determined by the following critical parameters:

• Connector type, contact type, and gender (Header, Male Pin)
• Position count and row configuration (16 positions, 2 rows)
• Mating pitch and row spacing (0.100" / 2.54mm)
• Mounting method (Through Hole)
• Fastening mechanism (Push-Pull)
• Operating temperature range (-55°C ~ 105°C minimum)
• Material flammability compliance (UL94 V-0)

Three substitute parts meet these core electrical and mechanical compatibility criteria:

1. 3M D3408-6002-AR - Active status, improved shrouding (4-wall), higher current rating, RoHS3 compliant
2. 3M N3408-6002RB - Active status, 4-wall shrouding, higher current rating, RoHS compliant
3. CW Industries CWN-350-16-0021 - Active status, 4-wall shrouding, extended temperature range, RoHS3 compliant

Parameter Comparison

Engineering Selection Recommendations

3M D3408-6002-AR is the primary recommended substitute. It maintains identical mating and post contact dimensions, operates within the same temperature range, and achieves ROHS3 compliance. The 4-wall shrouding provides enhanced mechanical protection compared to the 3-wall design of the original part. Current rating increases to 1.75A, supporting higher-load applications. This part is actively manufactured and widely available.

3M N3408-6002RB serves as an alternative 3M solution with equivalent electrical and mechanical characteristics to D3408-6002-AR. RoHS compliance status is confirmed. The 4-wall shrouding and 1.75A current rating match the D3408-6002-AR specification. Bulk packaging may be advantageous for high-volume production.

CW Industries CWN-350-16-0021 is suitable for applications requiring extended operating temperature range (-55°C ~ 125°C). The circular contact geometry and phosphor bronze material differ from the original square contacts, but maintain mechanical and electrical compatibility within the specified pitch and position parameters. ROHS3 compliance is confirmed. This part is actively produced and available.

For new designs or production requiring regulatory compliance, D3408-6002-AR or N3408-6002RB are preferred. For applications with elevated temperature requirements, CWN-350-16-0021 is appropriate.

Frequently Asked Questions (FAQ)

Q: Can the 3408-2002 be directly replaced with D3408-6002-AR?

A: Yes. Both parts share identical mating pitch (0.100"), row spacing (0.100"), contact length specifications (0.240" mating, 0.112" post), and insulation height (0.680"). The 4-wall shrouding of D3408-6002-AR provides enhanced mechanical protection without affecting electrical compatibility.

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

A: Shrouding refers to the plastic housing surrounding the contacts. The original 3408-2002 uses 3-wall shrouding, while all substitute parts use 4-wall shrouding, providing additional mechanical support and contact protection during mating and unmating cycles.

Q: Does the contact material change affect compatibility?

A: Contact material differences (copper alloy, brass, phosphor bronze) do not affect mechanical or electrical compatibility for standard applications. All materials maintain the required conductivity and durability for 0.100" pitch connectors rated at 1A to 1.75A.

Q: Why does CWN-350-16-0021 have circular contacts instead of square?

A: Contact shape (square vs. circular) is a manufacturing variation that does not affect electrical performance or mechanical fit at 0.100" pitch. Both geometries provide equivalent contact area and current-carrying capacity for this connector class.

Q: Is the CWN-350-16-0021 suitable for my application if it operates above 105°C?

A: CWN-350-16-0021 is rated to -55°C ~ 125°C, supporting applications up to 125°C. The 3408-2002 and other 3M substitutes are rated to -55°C ~ 105°C. Select CWN-350-16-0021 only if your application requires the extended upper temperature limit.

Q: What is the impact of different post contact finishes (Tin-Lead vs. Tin vs. Nickel)?

A: Post finishes affect solderability and corrosion resistance during PCB assembly. Tin-Lead (original) and Tin finishes are standard for through-hole soldering. Nickel provides additional corrosion resistance. All finishes are compatible with standard PCB assembly processes.

Q: Are all substitute parts RoHS compliant?

A: The original 3408-2002 is RoHS non-compliant. D3408-6002-AR and CWN-350-16-0021 are ROHS3 compliant. N3408-6002RB is RoHS compliant. For applications requiring regulatory compliance, select D3408-6002-AR, N3408-6002RB, or CWN-350-16-0021.

Q: What packaging options are available?

A: D3408-6002-AR is supplied in Tray packaging. N3408-6002RB and CWN-350-16-0021 are supplied in Bulk packaging. Select based on production volume and handling requirements.