3M 3429-2602UG Equivalent & Substitute Parts

Part Overview

The 3M 3429-2602UG is a rectangular connector header designed for through-hole mounting with 26 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector features shrouded 3-wall construction with solder termination and latch lock/eject hooks. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible interconnect solutions.

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
Termination	Solder
Shrouding	Shrouded - 3 Wall
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 3429-2602UG is determined by the following critical parameters that must remain constant:

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
Termination: Solder
Shrouding: Shrouded configuration
Operating temperature range: -55°C ~ 105°C minimum
Material flammability rating: UL94 V-0

Substitute parts are grouped into two categories:

Category 1: Direct 3M Series Substitutes — Parts from the 3M 3000 and D3000 series that maintain identical mating dimensions and electrical characteristics while offering improved specifications or active product status.

Category 2: Cross-Manufacturer Alternatives — TE Connectivity AMP-Latch and Amphenol ICC Quickie™ series connectors that meet all critical mating and electrical parameters while providing alternative sourcing options.

Parameter Comparison

Parameter	3429-2602UG	3429-6002	D3429-6002-AR	N3429-6002RB	5102321-6	2-5499206-6	53611-S26-4LF
Manufacturer	3M	3M	3M	3M	TE Connectivity	TE Connectivity	Amphenol ICC
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	26	26	26	26	26	26	26
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	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Long	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks
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)	0.230" (5.84mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.155" (3.94mm)	0.110" (2.79mm)	0.120" (3.05mm)
Overall Contact Length	0.652" (16.56mm)	0.652" (16.56mm)	0.652" (16.56mm)	0.652" (16.56mm)	0.684" (17.37mm)	0.639" (16.23mm)	-
Insulation Height	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.549" (13.94mm)	0.549" (13.94mm)	0.640" (16.26mm)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold, GXT™
Contact Finish Thickness - Mating	15.0µin (0.38µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	15.0µin (0.38µm)
Contact Finish - Post	Tin-Lead	Tin-Lead	Tin	Tin	Tin	Tin	Tin
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-
Current Rating	1A	1A	1.75A	1.75A	1A per Contact	1A	-
Voltage Rating	-	-	-	-	250VAC	250VAC	-
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	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For RoHS Compliance Requirements:

D3429-6002-AR, N3429-6002RB, 5102321-6, 2-5499206-6, and 53611-S26-4LF are compliant alternatives. D3429-6002-AR and N3429-6002RB maintain 3M series continuity with active product status. D3429-6002-AR offers the highest current rating at 1.75A and is available in tray packaging with 1805 units in stock.

For Direct 3M Series Replacement:

N3429-6002RB provides active product status within the 3M portfolio with RoHS compliance and improved current rating of 1.75A. This part maintains the same mating dimensions and operating temperature range as the original 3429-2602UG.

For Cross-Manufacturer Sourcing:

5102321-6 from TE Connectivity AMP-Latch series offers the highest inventory availability (6248 units) with active status and RoHS3 compliance. This part maintains identical mating pitch and position count with extended operating temperature range (-65°C ~ 105°C).

2-5499206-6 provides an alternative TE Connectivity option with 2157 units in stock and RoHS3 compliance, suitable for applications requiring latch lock/eject hook fastening.

53611-S26-4LF from Amphenol ICC Quickie™ series offers RoHS compliance with alternative sourcing, though operating temperature range is not specified in available data.

For Legacy System Support:

3429-6002 maintains obsolete status but offers immediate availability (1051 units) with identical mating dimensions to the original part, suitable for direct replacement in existing designs where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can 3429-6002 be used as a direct replacement for 3429-2602UG?

A: Yes. Both parts share identical mating pitch (0.100"), position count (26), row configuration (2 rows), and operating temperature range (-55°C ~ 105°C). The primary difference is shrouding configuration: 3429-2602UG uses 3-wall shrouding while 3429-6002 uses 4-wall shrouding. Both are obsolete products.

Q: What is the difference between push-pull and latch lock/eject hook fastening?

A: Fastening type determines mating and unmating mechanism. Latch lock/eject hooks (3429-2602UG, 5102321-6, 2-5499206-6) provide positive locking with manual eject. Push-pull fastening (3429-6002, D3429-6002-AR, N3429-6002RB) allows mating and unmating by axial force without additional latching mechanism. Both are mechanically compatible with 0.100" pitch 26-position headers.

Q: Are TE Connectivity AMP-Latch parts compatible with 3M headers?

A: Yes. TE Connectivity 5102321-6 and 2-5499206-6 maintain identical mating pitch (0.100"), position count (26), row spacing (0.100"), and shrouding configuration. Mating interface compatibility is determined by these parameters, which are identical across manufacturers.

Q: What does RoHS compliance mean for connector selection?

A: RoHS (Restriction of Hazardous Substances) compliance restricts lead, cadmium, mercury, and other hazardous materials. The original 3429-2602UG is RoHS non-compliant. For new designs or systems requiring RoHS compliance, select D3429-6002-AR, N3429-6002RB, 5102321-6, 2-5499206-6, or 53611-S26-4LF.

Q: Why do some substitute parts have higher current ratings?

A: D3429-6002-AR and N3429-6002RB are rated for 1.75A compared to the original 1A rating. This reflects improved contact material and finish specifications. Higher current rating does not affect compatibility; it indicates enhanced electrical performance capability.

Q: What is the significance of contact post length differences?

A: Contact post length affects solder joint formation and PCB hole depth requirements. The original 3429-2602UG has 0.112" (2.84mm) post length. TE Connectivity parts (5102321-6, 2-5499206-6) have 0.155" (3.94mm) post length, requiring deeper PCB holes. 2-5499206-6 has 0.110" (2.79mm) post length, nearly identical to the original. Verify PCB design compatibility before substitution.

Q: Which substitute offers the best inventory availability?

A: 5102321-6 from TE Connectivity provides the highest inventory with 6248 units in stock, active product status, and RoHS3 compliance. This part is suitable for high-volume applications requiring reliable long-term sourcing.

Q: Can I use 53611-S26-4LF as a substitute?

A: Yes, for mating interface compatibility. 53611-S26-4LF maintains identical pitch (0.100"), position count (26), and row spacing (0.100"). However, contact post length (0.120") and insulation height (0.640") differ from the original. Verify PCB design compatibility and confirm operating temperature requirements, as this specification is not provided for this part.

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