3M 3433-2002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-2002 is a through-hole rectangular connector header with 50 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This connector features shrouded 3-wall construction with male pins, solder termination, and push-pull fastening. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement.

Substiute Parts

3433-2002

3MIn Stock: 9173433-2002 Datasheet

Current PartRFQ

D3433-6002-AR

3MIn Stock: 1293D3433-6002-AR Datasheet

MFR RecommendedRFQ

N3433-6002RB

3MIn Stock: 1326N3433-6002RB Datasheet

MFR RecommendedRFQ

CWN-350-50-0021

CW IndustriesIn Stock: 966CWN-350-50-0021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3433-2002 is determined by the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (50) and rows (2)
• Mating pitch (0.100" / 2.54mm)
• Row spacing (0.100" / 2.54mm)
• Mounting type (Through Hole)
• Termination method (Solder)
• Fastening type (Push-Pull)
• Operating temperature range (-55°C to 105°C minimum)
• Flammability rating (UL94 V-0)

The three substitute parts listed below maintain these core electrical and mechanical parameters, enabling direct functional replacement in applications designed for the 3433-2002. Variations in shrouding configuration, contact material, contact finish specifications, and current rating do not prevent substitution when the core parameters align.

Parameter Comparison

Engineering Selection Recommendations

D3433-6002-AR (3M, Active, ROHS3 Compliant)

This part is the manufacturer-recommended substitute from 3M. It maintains all core electrical and mechanical parameters of the 3433-2002 while offering improved compliance status. The D3433-6002-AR is ROHS3 compliant, addressing regulatory requirements for new designs. The part features 4-wall shrouding compared to the 3-wall design of the original, providing enhanced mechanical protection. Current rating is increased to 1.75A. Contact finish on the post is tin rather than tin-lead, eliminating lead content. Packaging is provided in trays.

N3433-6002RB (3M, Active, RoHS Compliant)

This 3M alternative maintains the original series designation (3000) and offers RoHS compliance. The N3433-6002RB provides 4-wall shrouding and increased current rating of 1.75A. Contact material remains copper alloy with tin post finish. Packaging is bulk format. This option is suitable for applications requiring the original 3000 series designation while transitioning to compliant components.

CWN-350-50-0021 (CW Industries, Active, ROHS3 Compliant)

This cross-manufacturer substitute from CW Industries provides ROHS3 compliance and an extended operating temperature range to 125°C. The part maintains all core connector parameters with 4-wall shrouding. Contact material is phosphor bronze with nickel post finish. Contact post length is 0.090" (2.29mm) compared to 0.112" (2.84mm) in the original design. Current rating is 1A, matching the original specification. Packaging is bulk format.

Frequently Asked Questions (FAQ)

Q: Can the D3433-6002-AR directly replace the 3433-2002 in existing designs?

A: Yes. The D3433-6002-AR maintains all core electrical and mechanical parameters required for functional compatibility: 50 positions, 2 rows, 2.54mm pitch, through-hole solder termination, and push-pull fastening. The increased current rating (1.75A vs. 1A) and enhanced shrouding (4-wall vs. 3-wall) provide improved performance characteristics without compromising compatibility.

Q: What is the difference between the 3M substitutes (D3433-6002-AR and N3433-6002RB)?

A: Both are 3M products with identical core connector specifications. The primary differences are series designation (D3000 vs. 3000), packaging format (tray vs. bulk), and compliance certification (ROHS3 vs. RoHS). The D3433-6002-AR is the manufacturer-recommended option and represents the newer D3000 series platform.

Q: Is the CWN-350-50-0021 from CW Industries compatible with the original 3433-2002?

A: Yes, the CWN-350-50-0021 maintains all critical connector parameters. The contact post length is slightly shorter (0.090" vs. 0.112"), and contact material differs (phosphor bronze vs. copper alloy). These variations do not prevent functional substitution in applications designed for the 3433-2002. The extended operating temperature range to 125°C provides additional thermal capability.

Q: Why do the substitute parts have different shrouding configurations?

A: The original 3433-2002 features 3-wall shrouding, while all active substitutes provide 4-wall shrouding. Four-wall shrouding offers improved mechanical protection and keying alignment. This enhancement does not affect electrical compatibility and is considered a design improvement in current connector platforms.

Q: Are there compliance considerations when selecting a substitute?

A: Yes. The 3433-2002 is RoHS non-compliant. All three substitute parts are RoHS or ROHS3 compliant, making them suitable for applications subject to RoHS regulations. For new designs or procurement requiring regulatory compliance, any of the three substitutes is appropriate. For legacy system maintenance, compliance requirements should be evaluated based on application jurisdiction and customer specifications.

Q: What is the inventory status of these substitute parts?

A: D3433-6002-AR: 1244 pcs in stock. N3433-6002RB: 1315 pcs in stock. CWN-350-50-0021: 902 pcs in stock. All parts are classified as new original stock.

Q: Can I use these substitutes interchangeably in the same application?

A: All three parts are functionally compatible with the 3433-2002 and with each other for the core connector function. Selection should be based on specific requirements: manufacturer preference (3M vs. CW Industries), packaging needs (tray vs. bulk), compliance certification level, and thermal operating range requirements.