3M 3429-5202 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3429-5202 is a through-hole, right-angle rectangular connector header with 26 positions at 0.100" (2.54mm) pitch, designed for board-to-board or cable interconnection applications. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The connector features shrouded 4-wall construction with solder termination and latch lock/eject hook fastening.

Key Parameters

Parameter	Value
Manufacturer Part Number	3429-5202
Manufacturer	3M
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	26
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
Fastening Type	Latch Lock/Eject Hooks, Short
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 3429-5202 is determined by the following critical parameters:

Number of positions: 26
Pitch spacing: 0.100" (2.54mm)
Mounting configuration: Through hole, right angle
Connector style: Header with shrouded 4-wall construction
Termination method: Solder
Operating temperature range: -55°C ~ 105°C
Current rating: 1.75A

The three qualified substitute parts maintain these core electrical and mechanical parameters. Variations exist in fastening type (Push-Pull versus Latch Lock), contact material composition, insulation material formulation, contact finish specifications, and product status/compliance certifications. These variations do not affect functional interchangeability for the specified mating interface and electrical performance requirements.

Parameter Comparison

Parameter	3429-5202 (Main)	3429-5002	D3429-5002-AR	N3429-5002RB
Manufacturer	3M	3M	3M	3M
Number of Positions	26	26	26	26
Number of Rows	2	2	2	2
Pitch - Mating	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)
Connector Type	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	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
Termination	Solder	Solder	Solder	Solder
Fastening Type	Latch Lock/Eject Hooks, Short	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	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)	0.112" (2.84mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)
Contact Shape	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin-Lead	Tin	Tin
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating	1.75A	1.75A	1.75A	1.75A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black
Product Status	Obsolete	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For new designs and ongoing production requiring compliance with current environmental regulations, D3429-5002-AR or N3429-5002RB are the preferred selections. Both parts carry active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

D3429-5002-AR is recommended for applications requiring board-to-cable/wire interconnection with tray packaging. This part features brass contact material and tin post finish, with reduced gold mating finish thickness (10.0µin versus 30.0µin on the main part).

N3429-5002RB is recommended for board-to-board or cable applications with bulk packaging. This part maintains copper alloy contact material and tin post finish, with standard gold mating finish thickness (30.0µin), providing closer electrical and material alignment to the original 3429-5202 specification.

3429-5002 remains functionally equivalent but carries obsolete product status and RoHS non-compliance, limiting its suitability for new production unless legacy system maintenance is the sole requirement.

Frequently Asked Questions (FAQ)

Q: Can the 3429-5002 directly replace the 3429-5202 in existing assemblies?

A: Yes. Both parts share identical mating pitch (0.100"), position count (26), row configuration (2), mounting type (through hole, right angle), and electrical ratings (1.75A, -55°C ~ 105°C). The fastening mechanism differs (Push-Pull versus Latch Lock), but this does not affect mating interface compatibility.

Q: What is the difference between D3429-5002-AR and N3429-5002RB?

A: Both are active, ROHS3-compliant alternatives. D3429-5002-AR is optimized for board-to-cable/wire applications with tray packaging and brass contacts. N3429-5002RB supports board-to-board or cable applications with bulk packaging and copper alloy contacts. Contact material and packaging differ; mating interface specifications remain identical.

Q: Why does the main part 3429-5202 show obsolete status?

A: The 3429-5202 is classified as obsolete, indicating discontinued production. Active alternatives (D3429-5002-AR and N3429-5002RB) provide equivalent functionality with current product support and regulatory compliance.

Q: Are there compliance differences between substitute options?

A: Yes. The 3429-5202 and 3429-5002 are RoHS non-compliant. D3429-5002-AR and N3429-5002RB are ROHS3 compliant. For applications subject to RoHS regulations, D3429-5002-AR or N3429-5002RB must be selected.

Q: Does contact finish thickness affect electrical performance?

A: Contact finish thickness variations (10.0µin on D3429-5002-AR versus 30.0µin on 3429-5202 and N3429-5002RB for mating surfaces) do not affect functional electrical performance within the specified current rating (1.75A) and operating temperature range (-55°C ~ 105°C).

Q: What packaging options are available?

A: 3429-5002 is supplied in bulk packaging. D3429-5002-AR is supplied in tray packaging. N3429-5002RB is supplied in bulk packaging. Select based on production workflow and inventory management requirements.

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