3M 3432-5502UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3432-5502UG is a through-hole, right-angle rectangular connector header with 40 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This part operates across the -55°C to 105°C temperature range with a 1A current rating per contact and features shrouded 4-wall construction with keying and mounting flange capabilities.

The 3432-5502UG carries an obsolete product status. Identifying functionally equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

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
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitute parts for the 3432-5502UG are qualified based on the following critical parameters that determine functional interchangeability:

Connector geometry: 40-position, 2-row configuration at 0.100" (2.54mm) pitch with 0.100" row spacing
Mounting orientation: Through-hole, right-angle mounting
Shrouding design: Shrouded 4-wall construction with keying slot and mounting flange
Contact configuration: Male pin, square contact shape
Electrical performance: Operating temperature -55°C to 105°C, UL94 V-0 flammability rating
Termination method: Solder termination

The following substitute parts meet these core requirements:

3M D3432-5002-AR (Active, ROHS3 Compliant) - Direct 3M series upgrade with enhanced current rating
3M N3432-5002RB (Active, RoHS Compliant) - 3M series variant with push-pull fastening
TE Connectivity 499345-9 (Active, AMP-Latch series) - Cross-manufacturer equivalent with latch fastening
TE Connectivity 499913-9 (Active, AMP-Latch series) - Cross-manufacturer equivalent with latch fastening

Parameter Comparison

Parameter	3432-5502UG (Main)	D3432-5002-AR	N3432-5002RB	499345-9	499913-9
Manufacturer	3M	3M	3M	TE Connectivity	TE Connectivity
Product Status	Obsolete	Active	Active	Active	Active
Number of Positions	40	40	40	40	40
Number of Rows	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)
Row Spacing - Mating	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
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.110" (2.79mm)	0.110" (2.79mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.315" (8.00mm)	0.315" (8.00mm)
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin-Lead	Tin-Lead
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Current Rating (Amps)	1A	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
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS non-compliant	Not applicable
Fastening Type	Latch Lock/Eject Hooks, Short	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short

Engineering Selection Recommendations

For RoHS-compliant applications:

The 3M D3432-5002-AR and 3M N3432-5002RB are the preferred substitutes. Both parts carry active product status and meet RoHS compliance requirements. The D3432-5002-AR offers ROHS3 compliance with enhanced current rating (1.75A) and is packaged in trays. The N3432-5002RB provides RoHS compliance with identical current rating and is available in bulk packaging. Both maintain the same mating pitch, row spacing, and operating temperature range as the original part.

For applications where RoHS compliance is not required:

The TE Connectivity 499345-9 and 499913-9 (AMP-Latch series) provide functionally equivalent alternatives with active product status. These parts maintain identical connector geometry, pitch, and shrouding specifications. The TE Connectivity parts offer extended operating temperature range (-65°C to 105°C) compared to the original specification. Contact finish specifications differ slightly; both TE parts feature gold or gold-palladium mating finish with tin-lead post finish.

Fastening mechanism considerations:

The original 3432-5502UG uses latch lock/eject hooks (short). The 3M substitutes (D3432-5002-AR and N3432-5002RB) employ push-pull fastening, which represents a functional change in connector engagement. The TE Connectivity substitutes (499345-9 and 499913-9) retain the latch lock/eject hook fastening mechanism, maintaining mechanical compatibility with existing mating connectors designed for the original part.

Frequently Asked Questions (FAQ)

Q: Can the 3M D3432-5002-AR directly replace the 3432-5502UG in existing designs?

A: The D3432-5002-AR matches all critical electrical and mechanical parameters including pitch, row spacing, contact configuration, and operating temperature. However, the fastening mechanism differs: the original uses latch lock/eject hooks while the D3432-5002-AR uses push-pull fastening. This change requires verification that mating connectors are compatible with the push-pull interface.

Q: What is the difference between the 3M N3432-5002RB and D3432-5002-AR?

A: Both parts are 3M active products with identical connector geometry and current rating (1.75A). The primary differences are packaging (N3432-5002RB in bulk versus D3432-5002-AR in trays) and RoHS compliance status (both compliant, with D3432-5002-AR carrying ROHS3 designation). Contact finish thickness on the post differs: D3432-5002-AR at 39.4µin versus N3432-5002RB at 200.0µin.

Q: Are TE Connectivity 499345-9 and 499913-9 interchangeable with each other?

A: Yes. Both parts are TE Connectivity AMP-Latch series headers with identical connector specifications, pitch, row spacing, and fastening mechanism. The primary difference is contact finish thickness on the mating surface: 499345-9 at 30.0µin versus 499913-9 at 15.0µin.

Q: What are the implications of the contact post length difference between 3M and TE Connectivity substitutes?

A: The original 3432-5502UG and 3M substitutes specify 0.112" (2.84mm) contact post length, while TE Connectivity parts specify 0.110" (2.79mm). This 0.002" difference is within typical PCB hole tolerance and does not affect solder joint formation or electrical performance in standard through-hole applications.

Q: Can I use a TE Connectivity substitute if my design currently uses the 3432-5502UG?

A: TE Connectivity 499345-9 and 499913-9 maintain the same latch lock/eject hook fastening mechanism as the original part, making them mechanically compatible with existing mating connectors. Electrical specifications and operating temperature ranges are equivalent or superior. Verify that your PCB layout accommodates the slightly different insulation height (0.315" versus 0.340") if space constraints exist.

Q: Which substitute offers the best compliance profile for new designs?

A: The 3M D3432-5002-AR provides ROHS3 compliance with active product status and enhanced current rating (1.75A). For applications requiring extended temperature operation, the TE Connectivity substitutes offer -65°C to 105°C range versus the original -55°C to 105°C specification.

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