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

Part Overview

The 3M 3429-6002UG is a through-hole rectangular connector header with 26 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The connector features shrouded 4-wall construction with gold-plated mating contacts and tin-lead post finish, operating across -55°C to 105°C temperature range with UL94 V-0 flammability rating.

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
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead
Operating Temperature	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the 3429-6002UG is determined by strict equivalence across the following critical parameters:

26-position, 2-row configuration at 0.100" (2.54mm) pitch
Through-hole solder termination
Shrouded 4-wall construction with keying slot
Male pin contact type
Push-Pull fastening mechanism
Gold-plated mating surface
UL94 V-0 flammability compliance
Operating temperature range of -55°C to 105°C minimum

Substitute parts are grouped into two categories: direct 3M series equivalents (3429 and D3429 series) and cross-manufacturer alternatives (HARTING, Amphenol ICC, CW Industries). Within each category, variations exist in contact material, post finish composition, insulation material, and RoHS compliance status. These variations are permissible substitutions when the application does not impose restrictions on these secondary parameters.

Parameter Comparison

Part Number	Manufacturer	Series	Positions	Pitch	Contact Type	Fastening	Mating Finish	Post Finish	Operating Temp	Current Rating	Product Status	RoHS Status
3429-6002UG	3M	3000	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 15.0µin	Tin-Lead 200.0µin	-55°C ~ 105°C	1A	Obsolete	Non-compliant
3429-6002	3M	3000	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 30.0µin	Tin-Lead 200.0µin	-55°C ~ 105°C	1A	Obsolete	Non-compliant
D3429-6002-AR	3M	D3000	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 10.0µin	Tin 39.4µin	-55°C ~ 105°C	1.75A	Active	ROHS3 Compliant
N3429-6002RB	3M	3000	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 30.0µin	Tin 200.0µin	-55°C ~ 105°C	1.75A	Active	RoHS Compliant
09185266924	HARTING	SEK	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold	Tin	-55°C ~ 125°C	—	Active	ROHS3 Compliant
71918-026LF	Amphenol ICC (FCI)	Quickie™	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold, GXT™ 30.0µin	Tin 78.7µin	—	—	Active	RoHS Compliant
CWN-350-26-0021	CW Industries	CWN	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 30.0µin	Nickel 50.0µin	-55°C ~ 125°C	1A	Active	ROHS3 Compliant
CWN-351-26-0000	CW Industries	CWN	26 (2x13)	0.100" (2.54mm)	Male Pin	Latch Lock/Eject Hooks, Short	Gold 10.0µin	Nickel 50.0µin	-55°C ~ 125°C	1A	Active	ROHS3 Compliant
CWN-351-26-0021	CW Industries	CWN	26 (2x13)	0.100" (2.54mm)	Male Pin	Latch Lock/Eject Hooks, Short	Gold 30.0µin	Nickel 50.0µin	-55°C ~ 125°C	1A	Active	ROHS3 Compliant
CWN-360-26-0000	CW Industries	CWN	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 10.0µin	Nickel 50.0µin	-55°C ~ 125°C	1A	Active	ROHS3 Compliant
CWN-360-26-0021	CW Industries	CWN	26 (2x13)	0.100" (2.54mm)	Male Pin	Push-Pull	Gold 30.0µin	Nickel 50.0µin	-55°C ~ 125°C	1A	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 3429-6002UG, the following selection criteria apply:

3M Series Substitutes (Preferred for Legacy System Continuity):

3429-6002: Maintains 3M 3000 series lineage with identical mechanical and electrical specifications. Obsolete status limits long-term availability.
D3429-6002-AR: Active production status with ROHS3 compliance. Increased current rating (1.75A vs 1A) and improved contact finish (tin vs tin-lead post). Recommended for new designs and long-term support requirements.
N3429-6002RB: Active production with RoHS compliance. Maintains 1.75A current rating with tin post finish. Suitable for applications requiring RoHS certification without full ROHS3 compliance.

Cross-Manufacturer Substitutes (Alternative Sources):

HARTING 09185266924: Active production with extended operating temperature range (-55°C to 125°C). ROHS3 compliant. Suitable for thermal margin applications.
Amphenol ICC 71918-026LF: Active Quickie™ series with enhanced tin post finish (78.7µin). RoHS compliant. Recommended for high-reliability applications requiring superior contact durability.
CW Industries CWN-360-26-0021: Active production with Push-Pull fastening and extended temperature range (-55°C to 125°C). ROHS3 compliant. Circular contact geometry differs from original square contacts.

Fastening Type Consideration: CWN-351-26-0000 and CWN-351-26-0021 employ Latch Lock/Eject Hooks fastening instead of Push-Pull. These are functionally equivalent for board-to-cable applications but require mechanical interface verification before substitution.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 3429-6002UG with any of the listed parts? A: All listed parts maintain the critical 26-position, 2.54mm pitch configuration with through-hole solder termination and shrouded 4-wall construction. Substitution is mechanically and electrically valid. However, verify fastening type compatibility (Push-Pull vs Latch Lock) and post finish requirements for your specific application.

Q: What is the difference between tin and tin-lead post finishes? A: The original 3429-6002UG uses tin-lead post finish (200.0µin thickness). Modern substitutes employ pure tin finish to comply with RoHS regulations. Tin provides equivalent electrical performance and solderability. Tin-lead is no longer produced for new components due to environmental restrictions.

Q: Why do some substitutes have higher current ratings (1.75A vs 1A)? A: D3429-6002-AR and N3429-6002RB employ brass or improved copper alloy contact materials with optimized geometry, supporting higher current capacity. The original 1A rating remains valid for these parts; the higher rating indicates additional capability margin.

Q: Are CW Industries parts with circular contacts compatible with square contact receptacles? A: CWN-350, CWN-360, and CWN-351 series employ circular contact geometry versus the original square contacts. Mechanical mating with existing square-contact receptacles is not compatible. Verify receptacle contact geometry before substitution.

Q: What does ROHS3 compliance mean versus RoHS compliance? A: ROHS3 (RoHS 3) represents the current regulatory standard with stricter restrictions on hazardous substances including lead, cadmium, and mercury. RoHS (RoHS 1/2) represents earlier compliance levels. ROHS3 compliant parts are suitable for all applications requiring RoHS certification.

Q: Can I use the HARTING 09185266924 in applications with temperature extremes above 105°C? A: The HARTING part operates to 125°C maximum, providing 20°C additional margin above the original specification. This is suitable for applications requiring extended thermal performance. Verify that all mated components support this temperature range.

Q: What is the significance of contact finish thickness variations? A: Gold finish thickness (10.0µin to 30.0µin) affects contact durability and wear resistance. Thicker finishes (30.0µin) provide extended mating cycle life. Post finish thickness (39.4µin to 200.0µin) impacts solder joint reliability and mechanical strength. All listed variations meet industry standards for through-hole solder applications.

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