3M 3432-5202 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3432-5202 is a through-hole, right-angle rectangular connector header with 40 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The connector features shrouded 4-wall construction with solder termination and latch lock fastening, suitable for board-to-board or cable interconnection applications.

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
Shrouding	Shrouded - 4 Wall
Termination	Solder
Contact Length - Mating	0.240" (6.10mm)
Insulation Height	0.340" (8.64mm)
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 3432-5202 is determined by strict alignment with the following core 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
Shrouding: Shrouded - 4 wall
Termination: Solder
Material flammability rating: UL94 V-0

The identified substitute parts meet these core electrical and mechanical parameters. Variations in contact material, contact finish specifications, fastening type, insulation material, and product status are secondary considerations that do not prevent functional substitution when core parameters align.

Parameter Comparison

Parameter	3432-5202 (Main)	D3432-5002-AR	N3432-5002RB	499345-9	499913-9	71922-240LF
Manufacturer	3M	3M	3M	TE Connectivity AMP	TE Connectivity AMP	Amphenol ICC (FCI)
Series	3000	D3000	3000	AMP-Latch	AMP-Latch	Quickie™
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Positions	40	40	40	40	40	40
Number of Rows	2	2	2	2	2	2
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)
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)
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
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.339" (8.61mm)
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-
Current Rating	1.75A	1.75A	1.75A	1A per Contact	1A per Contact	-
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS non-compliant	Not applicable	RoHS Compliant
Packaging	-	Tray	Bulk	Tray	Tray	Tube

Engineering Selection Recommendations

All identified substitute parts satisfy the core electrical and mechanical requirements for direct replacement of the 3432-5202. Selection among active alternatives should prioritize the following factors:

RoHS Compliance: D3432-5002-AR, N3432-5002RB, and 71922-240LF are RoHS compliant, making them suitable for applications subject to RoHS directives. The 3432-5202, 499345-9, and 499913-9 are non-compliant or not applicable.

Product Status: All substitute parts carry active product status, ensuring ongoing availability and manufacturing support. The 3432-5202 is obsolete and subject to discontinuation.

Current Rating: D3432-5002-AR and N3432-5002RB maintain the 1.75A rating of the original part. The TE Connectivity options (499345-9, 499913-9) are rated at 1A per contact, suitable for lower-current applications.

Packaging Options: D3432-5002-AR is supplied in tray packaging, N3432-5002RB in bulk, 499345-9 and 499913-9 in tray, and 71922-240LF in tube. Selection depends on production volume and handling requirements.

Mechanical Tolerances: D3432-5002-AR and N3432-5002RB maintain identical contact length and insulation height specifications to the original part. The TE Connectivity and Amphenol ICC options exhibit minor variations in these dimensions that remain within acceptable substitution parameters.

Frequently Asked Questions (FAQ)

Q: Can the 3432-5202 be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts meet the core substitution criteria: 40-position, 2-row header configuration at 0.100" (2.54mm) pitch with through-hole, right-angle mounting, shrouded 4-wall construction, and solder termination. Physical and electrical compatibility is established.

Q: What is the primary reason for seeking substitutes for the 3432-5202?

A: The 3432-5202 is classified as obsolete. Substitute parts with active product status ensure continued availability for new production runs and design revisions.

Q: Are there differences in contact material between the main part and substitutes?

A: Yes. The 3432-5202 uses copper alloy contacts, while D3432-5002-AR uses brass, and 71922-240LF uses phosphor bronze. These material variations do not affect functional compatibility for standard signal and power distribution applications.

Q: Which substitute offers the best RoHS compliance?

A: D3432-5002-AR, N3432-5002RB, and 71922-240LF are all RoHS compliant. Selection among these three depends on packaging preference and availability requirements.

Q: Do the TE Connectivity options (499345-9, 499913-9) have lower current ratings?

A: Yes. These parts are rated at 1A per contact compared to 1.75A for the 3432-5202 and 3M alternatives. They are suitable for applications where current per contact does not exceed 1A.

Q: What packaging options are available?

A: D3432-5002-AR is supplied in tray, N3432-5002RB in bulk, 499345-9 and 499913-9 in tray, and 71922-240LF in tube. Packaging selection should align with production volume and inventory management practices.

Q: Are there dimensional differences that could affect PCB layout?

A: Minor variations exist in contact length and insulation height among substitute parts. D3432-5002-AR and N3432-5002RB maintain identical specifications to the original part. TE Connectivity options show reduced insulation height (0.315" vs. 0.340"), and 71922-240LF shows slightly reduced contact length (0.228" vs. 0.240"). These variations remain within acceptable mechanical tolerances for standard connector applications.

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