3M 3432-1002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3432-1002 is a through-hole, right-angle rectangular connector header with 40 positions at 0.100" (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 and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
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	Solder
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 3M 3432-1002 is determined by the following critical parameters:

Connector type (Header), contact type (Male Pin), and mating configuration (Board to Board or Cable/Wire)
Position count (40) and row configuration (2 rows)
Pitch specification (0.100" / 2.54mm) and row spacing (0.100" / 2.54mm)
Mounting style (Through Hole, Right Angle)
Termination method (Solder)
Operating temperature range (-55°C ~ 105°C minimum)
Flammability rating (UL94 V-0)

Substitute parts are grouped into three categories based on these parameters:

Category 1: 3M Direct Successors - Active products from 3M's current connector lines (D3000 and 3000 series) that maintain electrical and mechanical compatibility with identical pitch, position count, and row configuration.

Category 2: Amphenol ICC (FCI) Quickie™ Series - Active rectangular connectors with matching 40-position, 2.54mm pitch configuration. These parts feature circular contact shapes and alternative fastening mechanisms (Push-Pull or Latch Lock/Eject Hooks).

Category 3: CW Industries CWN Series - Active through-hole headers with 40-position, 2.54mm pitch configuration, offering extended operating temperature range (-55°C ~ 125°C) and alternative contact materials.

Parameter Comparison

Part Number	Manufacturer	Series	Status	Positions	Pitch (mm)	Rows	Shrouding	Contact Shape	Fastening Type	Temp Range (°C)	RoHS Status
3432-1002	3M	3000	Obsolete	40	2.54	2	3-Wall	Square	Push-Pull	-55 ~ 105	Non-compliant
D3432-5002-AR	3M	D3000	Active	40	2.54	2	4-Wall	Square	Push-Pull	-55 ~ 105	ROHS3 Compliant
N3432-5002RB	3M	3000	Active	40	2.54	2	4-Wall	Square	Push-Pull	-55 ~ 105	RoHS Compliant
65823-037LF	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Circular	Push-Pull	Not specified	RoHS Compliant
65823-039LF	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Circular	Push-Pull	Not specified	RoHS Compliant
65823-085LF	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Circular	Latch Lock/Eject Hooks	Not specified	RoHS Compliant
65823-087LF	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Circular	Latch Lock/Eject Hooks	Not specified	RoHS Compliant
65823-089	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Square	Latch Lock/Eject Hooks	Not specified	Non-compliant
65823-183LF	Amphenol ICC (FCI)	Quickie™	Active	40	2.54	2	4-Wall	Circular	Latch Lock/Eject Hooks, Short	Not specified	RoHS Compliant
CWN-300-40-0021	CW Industries	CWN	Active	40	2.54	2	4-Wall	Circular	Push-Pull	-55 ~ 125	ROHS3 Compliant
CWN-301-40-0021	CW Industries	CWN	Active	40	2.54	2	4-Wall	Circular	Latch Lock/Eject Hooks, Short	-55 ~ 125	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: D3432-5002-AR (3M)

The D3432-5002-AR is the manufacturer-recommended successor to the 3432-1002. It maintains identical electrical and mechanical specifications while offering ROHS3 compliance. The upgrade from 3-wall to 4-wall shrouding provides enhanced EMI shielding. This part is the direct evolutionary replacement within 3M's connector portfolio.

Secondary Recommendation: N3432-5002RB (3M)

The N3432-5002RB provides an alternative 3M solution with RoHS compliance and identical performance parameters. It maintains the same series lineage (3000 series) and offers equivalent functionality to the obsolete 3432-1002.

Alternative Recommendation: CWN-300-40-0021 (CW Industries)

The CWN-300-40-0021 offers extended operating temperature range (-55°C ~ 125°C) compared to the original specification (-55°C ~ 105°C). This part is ROHS3 compliant and suitable for applications requiring higher thermal performance. The circular contact geometry differs from the original square contacts.

Amphenol ICC (FCI) Quickie™ Series Considerations

The Amphenol ICC 65823 series parts (65823-037LF, 65823-039LF, 65823-085LF, 65823-087LF, 65823-183LF) provide active alternatives with 40-position, 2.54mm pitch configuration. These parts feature circular contact shapes and are RoHS compliant. Operating temperature specifications are not provided in the data. The 65823-089 is non-RoHS compliant and should be avoided for new designs.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 3432-1002 with D3432-5002-AR?

A: Yes. The D3432-5002-AR is the manufacturer-recommended successor. Both parts share identical pitch (2.54mm), position count (40), row configuration (2 rows), mounting style (through-hole right-angle), and termination method (solder). The primary differences are enhanced shrouding (4-wall vs. 3-wall) and RoHS3 compliance.

Q: What is the difference between push-pull and latch lock fastening types?

A: Push-pull fastening uses a simple push-to-connect, pull-to-disconnect mechanism. Latch lock/eject hooks provide a more secure connection with mechanical latching. The original 3432-1002 uses push-pull fastening. Substitute parts with latch lock fastening (65823-085LF, 65823-087LF, 65823-183LF, CWN-301-40-0021) require different mating connectors.

Q: Are circular and square contact shapes interchangeable?

A: No. Contact shape affects the mating interface. The original 3432-1002 uses square contacts. Substitute parts with circular contacts (Amphenol ICC Quickie™ series, CW Industries CWN series) require compatible mating connectors with circular contact geometry.

Q: Which substitute parts are RoHS compliant?

A: D3432-5002-AR, N3432-5002RB, 65823-037LF, 65823-039LF, 65823-085LF, 65823-087LF, 65823-183LF, CWN-300-40-0021, and CWN-301-40-0021 are all RoHS compliant. The 65823-089 is non-compliant and should not be used in new designs.

Q: What is the operating temperature range for Amphenol ICC Quickie™ parts?

A: Operating temperature specifications are not provided in the technical data for the Amphenol ICC 65823 series. Verify temperature requirements with the manufacturer before selection for temperature-critical applications.

Q: Does packaging type affect electrical or mechanical compatibility?

A: No. Packaging (bulk, tray) affects logistics and handling but does not impact electrical or mechanical compatibility. Select based on procurement and inventory requirements.

Q: Can I use CWN-300-40-0021 in applications requiring -55°C ~ 105°C operation?

A: Yes. The CWN-300-40-0021 supports -55°C ~ 125°C operation, which exceeds the original specification. It is suitable for applications requiring the original temperature range and provides additional thermal margin.

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