3M 3432-3005 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3432-3005 is a rectangular connector header designed for through-hole, right-angle board-to-board or cable applications with 40 positions at 2.54mm pitch. This component features shrouded 3-wall design with wire wrap termination and push-pull fastening. The part is currently obsolete, making identification of functionally equivalent substitutes essential for ongoing system support and new design implementations.

Substiute Parts

3432-3005

3MIn Stock: 9043432-3005 Datasheet

Current PartRFQ

CWN-320-40-0021

CW IndustriesIn Stock: 1046CWN-320-40-0021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CW Industries CWN-320-40-0021 qualifies as a functional substitute for the 3M 3432-3005 based on the following critical parameters:

Matching Parameters:

• Connector type: Header
• Contact type: Male Pin
• Number of positions: 40
• Number of rows: 2
• Pitch - mating: 0.100" (2.54mm)
• Row spacing - mating: 0.100" (2.54mm)
• Mounting type: Through Hole, Right Angle
• Termination: Wire Wrap
• Fastening type: Push-Pull
• Contact length - mating: 0.240" (6.10mm)
• Contact length - post: 0.610" (15.49mm)
• Contact finish - mating: Gold
• Contact finish thickness - mating: 30.0µin (0.76µm)
• Current rating: 1A
• Material flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)

The substitute maintains electrical and mechanical compatibility through identical mating pitch, position count, contact dimensions, and current handling capacity. Both components support wire wrap termination and push-pull fastening mechanisms.

Parameter Comparison

Engineering Selection Recommendations

The CW Industries CWN-320-40-0021 is an active product with current manufacturing support, making it the appropriate selection for applications requiring the 3M 3432-3005. The substitute maintains all critical electrical and mechanical parameters necessary for direct replacement.

The CWN-320-40-0021 offers an extended operating temperature range (-55°C ~ 125°C versus -55°C ~ 105°C), providing additional thermal margin for demanding applications. Both components carry UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating, ensuring equivalent environmental performance.

The substitute is RoHS3 compliant and REACH unaffected, supporting modern regulatory requirements. Availability of the CWN-320-40-0021 in active production status ensures long-term supply chain continuity compared to the obsolete 3M part.

Frequently Asked Questions (FAQ)

Q: Can the CWN-320-40-0021 directly replace the 3M 3432-3005 in existing designs?

A: Yes. Both connectors share identical mating pitch (2.54mm), position count (40), row configuration (2 rows), contact dimensions, and current rating (1A). The through-hole right-angle mounting, wire wrap termination, and push-pull fastening are functionally equivalent.

Q: What are the differences between these two connectors?

A: The primary differences are shrouding design (3-wall versus 4-wall), insulation material composition, contact shape (square versus circular), contact finish on posts (gold flash versus nickel with 50.0µin thickness), insulation height (0.340" versus 0.291"), and operating temperature range (-55°C ~ 105°C versus -55°C ~ 125°C). These differences do not affect electrical or mechanical compatibility for standard applications.

Q: Are there packaging considerations when switching to the substitute?

A: The CWN-320-40-0021 is supplied in bulk packaging, whereas the original 3M part packaging specification was not provided. Verify bulk packaging compatibility with your assembly and handling procedures.

Q: Does the extended temperature range of the substitute provide any advantage?

A: The CWN-320-40-0021 supports operation to 125°C compared to 105°C for the 3M part. This extended range offers additional thermal margin for applications operating in elevated temperature environments, though both components meet standard industrial temperature requirements.

Q: Are both connectors compliant with current regulatory standards?

A: The CWN-320-40-0021 is RoHS3 compliant and REACH unaffected. Both components carry UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating. The substitute supports modern regulatory requirements for new designs and production.