3M 3429-6002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3429-6002 is a shrouded rectangular connector header for through-hole mounting, featuring 26 positions arranged in 2 rows with 0.100" (2.54mm) pitch. This connector is designed for board-to-board or cable interconnection applications with push-pull fastening and gold-plated mating contacts. 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	26
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1A

Substitute Part Grouping Explanation

Substitute parts for the 3429-6002 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

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)
Shrouding (Shrouded - 4 Wall)
Operating temperature range (-55°C ~ 105°C or higher)
Material flammability rating (UL94 V-0)

Substitutes are divided into two categories:

Category A: Direct Electrical and Mechanical Equivalents - Parts maintaining identical position count, pitch, row spacing, shrouding, and mounting orientation (vertical). These include N3429-6002RB, D3429-6002-AR, 53612-G26-6, 53612-S26-6, 53612-S26-7, 71918-026LF, and 71980-126LF.

Category B: Functional Alternatives with Design Modifications - Parts with different mounting orientations (right-angle), position counts, or fastening mechanisms that require board layout or connector interface redesign. These include 09185266911 (right-angle, 26 positions) and 09195345322 (vertical, 34 positions).

Category C: Design Constraint Alternatives - Parts with different contact materials, insulation materials, or post lengths that may require electrical or thermal re-evaluation. These include CWN-350-26-0021 with circular contacts and nickel post finish.

Parameter Comparison

Part Number	Manufacturer	Positions	Rows	Pitch (mm)	Mounting	Fastening	Operating Temp (°C)	Current (A)	RoHS Status	Product Status
3429-6002	3M	26	2	2.54	Through Hole	Push-Pull	-55 ~ 105	1	Non-compliant	Obsolete
N3429-6002RB	3M	26	2	2.54	Through Hole	Push-Pull	-55 ~ 105	1.75	Compliant	Active
D3429-6002-AR	3M	26	2	2.54	Through Hole	Push-Pull	-55 ~ 105	1.75	ROHS3 Compliant	Active
09185266911	HARTING	26	2	2.54	Through Hole, Right Angle	Latch Lock/Eject Hooks, Short	-55 ~ 125	—	ROHS3 Compliant	Active
09195345322	HARTING	34	2	2.54	Through Hole	Latch Holder	-55 ~ 125	—	ROHS3 Compliant	Active
53612-G26-6	Amphenol ICC (FCI)	26	2	2.54	Through Hole	Latch Lock/Eject Hooks	—	—	—	Active
53612-S26-6	Amphenol ICC (FCI)	26	2	2.54	Through Hole	Latch Lock/Eject Hooks	—	—	—	Active
53612-S26-7	Amphenol ICC (FCI)	26	2	2.54	Through Hole	Latch Lock/Eject Hooks	—	—	—	Active
71918-026LF	Amphenol ICC (FCI)	26	2	2.54	Through Hole	Push-Pull	—	—	RoHS Compliant	Active
71980-126LF	Amphenol ICC (FCI)	26	2	2.54	Through Hole	Latch Lock/Eject Hooks	—	—	RoHS Compliant	Active
CWN-350-26-0021	CW Industries	26	2	2.54	Through Hole	Push-Pull	-55 ~ 125	1	ROHS3 Compliant	Active

Engineering Selection Recommendations

Primary Recommendation: N3429-6002RB or D3429-6002-AR

Both parts are manufactured by 3M and maintain identical mechanical and electrical interfaces with the obsolete 3429-6002. N3429-6002RB is RoHS Compliant and D3429-6002-AR is ROHS3 Compliant, addressing regulatory requirements for new designs. Both support higher current ratings (1.75A vs. 1A) and are actively produced with established supply chains.

Secondary Recommendation: 71918-026LF

Amphenol ICC (FCI) Quickie™ series part with identical position count, pitch, and push-pull fastening. RoHS Compliant status and active production status support long-term availability. Contact material differs (Phosphor Bronze vs. Copper Alloy), and post length is shorter (0.114" vs. 0.112"), requiring PCB footprint verification.

Alternative for Right-Angle Applications: 09185266911

HARTING SEK series connector for applications requiring right-angle board mounting. Maintains 26-position, 2.54mm pitch configuration with extended operating temperature range (-55°C ~ 125°C). Fastening mechanism differs (Latch Lock/Eject Hooks vs. Push-Pull), requiring connector interface redesign.

Alternative for Higher Position Count: 09195345322

HARTING SEK series 34-position connector for applications requiring additional signal lines. Maintains 2.54mm pitch and through-hole mounting. Extended operating temperature range (-55°C ~ 125°C) and ROHS3 Compliance. Requires PCB layout modification due to increased position count.

Alternative with Circular Contacts: CWN-350-26-0021

CW Industries CWN series connector maintaining identical position count and pitch. Circular contact geometry and nickel post finish differ from original specification. ROHS3 Compliant and extended operating temperature range (-55°C ~ 125°C). Suitable for applications where contact geometry does not impact mating interface.

Frequently Asked Questions (FAQ)

Q: Can N3429-6002RB directly replace 3429-6002 without PCB modification?

A: Yes. N3429-6002RB maintains identical mechanical dimensions, pitch, row spacing, position count, and mounting type. The higher current rating (1.75A vs. 1A) and improved insulation material (PCT vs. PBT) provide enhanced performance without requiring PCB redesign.

Q: What is the difference between D3429-6002-AR and N3429-6002RB?

A: Both are 3M equivalents with identical electrical and mechanical interfaces. D3429-6002-AR uses brass contacts with lower gold plating thickness (10.0µin vs. 30.0µin) and is packaged in trays. N3429-6002RB uses copper alloy contacts with standard gold plating and bulk packaging. D3429-6002-AR is ROHS3 Compliant; N3429-6002RB is RoHS Compliant. Selection depends on packaging requirements and compliance specifications.

Q: Can Amphenol ICC parts (53612 series, 71918-026LF, 71980-126LF) replace the 3M connector?

A: Amphenol ICC parts maintain the 26-position, 2.54mm pitch configuration and through-hole mounting. However, fastening mechanisms differ: 53612 series and 71980-126LF use Latch Lock/Eject Hooks, while 71918-026LF uses Push-Pull. Contact materials and post lengths vary. Mechanical compatibility requires connector interface verification. These parts are suitable for applications where fastening mechanism differences are acceptable.

Q: Is the HARTING 09185266911 (right-angle) compatible with the original 3429-6002 application?

A: The 09185266911 maintains 26 positions and 2.54mm pitch but requires right-angle board mounting instead of vertical. This necessitates PCB layout modification and connector interface redesign. Fastening mechanism differs (Latch Lock/Eject Hooks vs. Push-Pull). Use only when board space constraints require right-angle orientation.

Q: What does RoHS Compliant vs. ROHS3 Compliant mean for connector selection?

A: RoHS Compliant indicates compliance with the original Restriction of Hazardous Substances directive. ROHS3 Compliant indicates compliance with the updated directive (2011/65/EU). For new designs, ROHS3 Compliant parts (D3429-6002-AR, 09185266911, 09195345322, CWN-350-26-0021) are preferred. For legacy system maintenance, RoHS Compliant parts (N3429-6002RB, 71918-026LF, 71980-126LF) remain acceptable.

Q: Can the 34-position HARTING 09195345322 be used in place of the 26-position 3429-6002?

A: The 09195345322 is not a direct replacement. It provides 34 positions instead of 26, requiring PCB layout modification and additional signal routing. Use only when the application requires additional signal lines and board redesign is feasible.

Q: What packaging options are available for these substitutes?

A: Packaging varies by part number. N3429-6002RB and most Amphenol ICC parts are supplied in bulk. D3429-6002-AR is supplied in trays. 71918-026LF and 71980-126LF are supplied in tubes. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Are there operating temperature differences between substitutes?

A: The original 3429-6002 operates from -55°C to 105°C. Most substitutes maintain this range. HARTING parts (09185266911, 09195345322) and CWN-350-26-0021 extend the upper limit to 125°C, providing thermal margin for high-temperature applications.

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