3M 3431-5302-UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3431-5302-UG is a through-hole, right-angle rectangular connector header with 34 positions at 2.54mm pitch. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The connector features shrouded 4-wall design with solder termination and latch lock/eject hook fastening, suitable for board-to-board or cable interconnections in industrial and commercial electronics.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	34
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 Range	-55°C to 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 3431-5302-UG is determined by strict equivalence across the following critical parameters:

Number of positions: 34
Pitch spacing: 0.100" (2.54mm)
Mounting configuration: Through hole, right angle
Shrouding: Shrouded 4-wall design
Termination method: Solder
Contact type: Male pin
Operating temperature range: -55°C to 105°C minimum
Flammability rating: UL94 V-0

Substitute parts are grouped into two categories: 3M series alternatives (D3431-5002-AR, N3431-5002RB) and TE Connectivity AMP-Latch series alternatives (102322-8, 499141-8, 5102322-8, 5499786-8). All listed substitutes maintain electrical and mechanical compatibility within the specified parameter envelope.

Parameter Comparison

Parameter	3431-5302-UG	D3431-5002-AR	N3431-5002RB	102322-8	499141-8	5102322-8	5499786-8
Manufacturer	3M	3M	3M	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity
Series	3000	D3000	3000	AMP-Latch	AMP-Latch	AMP-Latch	AMP-Latch
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Number of Positions	34	34	34	34	34	34	34
Number of Rows	2	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)	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)	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	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	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	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.315" (8.00mm)
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-65°C to 105°C	-65°C to 105°C	-65°C to 105°C	-65°C to 105°C
Current Rating	1A	1.75A	1.75A	1A per Contact	1A per Contact	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	UL94 V-0
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 3431-5302-UG, the following selection criteria apply:

3M Series Alternatives: D3431-5002-AR and N3431-5002RB are active 3M products maintaining the same connector series lineage. D3431-5002-AR (D3000 series) is ROHS3 compliant with increased current rating of 1.75A. N3431-5002RB (3000 series) is also ROHS3 compliant and maintains the original series designation. Both support identical pitch, position count, and mounting configuration.

TE Connectivity AMP-Latch Series: Parts 102322-8, 499141-8, 5102322-8, and 5499786-8 provide cross-manufacturer alternatives with extended operating temperature range (-65°C to 105°C). These parts are active products with UL94 V-0 flammability rating. Parts 5102322-8 and 5499786-8 are ROHS3 compliant. The AMP-Latch series maintains electrical and mechanical compatibility through identical pitch, position count, and shrouded 4-wall configuration.

Compliance Considerations: For new designs or applications with RoHS requirements, D3431-5002-AR, N3431-5002RB, 5102322-8, and 5499786-8 are ROHS3 compliant alternatives. For legacy systems without RoHS constraints, all listed substitutes remain functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can the 3431-5302-UG be directly replaced with D3431-5002-AR?

A: Yes. Both connectors share identical electrical and mechanical specifications: 34 positions, 2.54mm pitch, through-hole right-angle mounting, shrouded 4-wall design, and solder termination. D3431-5002-AR is an active product with ROHS3 compliance and higher current rating (1.75A vs 1A).

Q: What is the difference between the 3M and TE Connectivity substitute options?

A: Both manufacturer groups maintain the same connector pitch, position count, and mounting type. TE Connectivity AMP-Latch series (102322-8, 499141-8, 5102322-8, 5499786-8) extends the operating temperature range to -65°C (versus -55°C for 3M alternatives) and includes ROHS3 compliant options. The 3M alternatives (D3431-5002-AR, N3431-5002RB) maintain the original series design with improved current ratings.

Q: Are there packaging differences between substitute parts?

A: Yes. D3431-5002-AR is supplied in Tray packaging. N3431-5002RB is supplied in Bulk packaging. TE Connectivity parts vary: 102322-8 has unspecified packaging, 499141-8 is Bulk, 5102322-8 is Tray, and 5499786-8 is Bulk. Packaging selection should align with procurement and assembly requirements.

Q: Which substitute part has the highest current rating?

A: D3431-5002-AR and N3431-5002RB both support 1.75A current rating, compared to 1A for the original 3431-5302-UG and 1A per contact for TE Connectivity alternatives.

Q: Are all substitute parts RoHS compliant?

A: No. D3431-5002-AR, N3431-5002RB, 5102322-8, and 5499786-8 are ROHS3 compliant. The original 3431-5302-UG, 102322-8, and 499141-8 are RoHS non-compliant. Compliance selection depends on application regulatory requirements.

Q: What is the insulation height difference between 3M and TE Connectivity options?

A: 3M alternatives (3431-5302-UG, D3431-5002-AR, N3431-5002RB) have 0.340" (8.64mm) insulation height. TE Connectivity AMP-Latch series parts have 0.315" (8.00mm) insulation height. This 0.025" (0.64mm) difference should be verified against PCB layout and mating connector specifications.

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