3M 3429-5003 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3429-5003 is a through-hole, right-angle rectangular connector header with 26 positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part features shrouded 4-wall construction with gold-plated mating contacts and tin-lead post finish, designed for board-to-board or cable applications with solder termination and push-pull fastening.

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, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 3429-5003 is determined by the following critical parameters: 26-position configuration, 2-row layout, 0.100" (2.54mm) mating pitch, 0.100" (2.54mm) row spacing, through-hole right-angle mounting, shrouded 4-wall construction, male pin contact type, solder termination, and push-pull fastening. All substitute parts listed maintain these core electrical and mechanical specifications. Variations in contact post length, contact material composition, contact finish thickness, insulation material type, and packaging format are permitted within the substitution group, as these do not affect mating compatibility or primary electrical performance in standard applications.

Parameter Comparison

Parameter	3429-5003	N3429-5003RB	3429-5002	D3429-5002-AR	N3429-5002RB	71922-026LF	CWN-510-26-0021
Manufacturer	3M	3M	3M	3M	3M	Amphenol ICC (FCI)	CW Industries
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, 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
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold, GXT™	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin-Lead	Tin	Tin	Tin	Nickel
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Brass	Copper Alloy	Phosphor Bronze	Phosphor Bronze
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	-55°C ~ 125°C
Current Rating	1.75A	1.75A	1.75A	1.75A	1.75A	Not specified	1A
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	Non-compliant	Compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

For applications requiring RoHS compliance, select from the active product status alternatives: N3429-5003RB, D3429-5002-AR, N3429-5002RB, 71922-026LF, or CWN-510-26-0021. The N3429-5003RB provides the closest electrical and mechanical match to the original 3429-5003, with identical contact post length (0.155") and ROHS3 compliance in active production status. For designs with extended temperature requirements beyond 105°C, the CWN-510-26-0021 supports operation to 125°C, though it carries a reduced current rating of 1A versus the 1.75A specification of the original part. The 71922-026LF (Amphenol ICC) and D3429-5002-AR offer alternative sourcing from different manufacturers while maintaining core mechanical and electrical compatibility. Parts with contact post length variations (3429-5002, D3429-5002-AR, N3429-5002RB at 0.112") remain functionally compatible for board-to-board or cable applications where post length tolerance is not a critical design constraint.

Frequently Asked Questions (FAQ)

Q: Can I use N3429-5003RB as a direct replacement for the obsolete 3429-5003?

A: Yes. The N3429-5003RB maintains identical mating contact length (0.240"), post length (0.155"), pitch (0.100"), position count (26), row configuration (2), shrouding (4-wall), and termination method (solder). The primary difference is RoHS3 compliance and active product status. Contact finish on the post changes from tin-lead to tin, which does not affect mating compatibility.

Q: What is the difference between parts with 0.155" and 0.112" contact post lengths?

A: Contact post length affects PCB insertion depth and solder joint formation. The 0.155" post (3429-5003, N3429-5003RB) provides greater engagement depth, while the 0.112" post (3429-5002, D3429-5002-AR, N3429-5002RB) reduces insertion depth. Both are compatible with standard 0.100" (2.54mm) pitch receptacles. Selection depends on PCB thickness and solder joint requirements for your specific application.

Q: Are there compliance differences between substitute parts?

A: Yes. The original 3429-5003 is RoHS non-compliant. Active alternatives N3429-5003RB, D3429-5002-AR, N3429-5002RB, 71922-026LF, and CWN-510-26-0021 are all RoHS compliant (ROHS3 or RoHS Compliant status). For applications subject to RoHS regulations, select from the compliant alternatives.

Q: Can I substitute the CWN-510-26-0021 if my design requires 1.75A current rating?

A: No. The CWN-510-26-0021 is rated for 1A maximum current, below the 1.75A specification of the 3429-5003. Use this part only if your application current requirement does not exceed 1A.

Q: What packaging options are available for these substitute parts?

A: Packaging varies by part number. N3429-5003RB and N3429-5002RB are supplied in bulk packaging. D3429-5002-AR is supplied in trays. The 71922-026LF is supplied in tubes. Packaging selection affects handling, storage, and procurement logistics but does not affect electrical or mechanical performance.

Q: Are all substitute parts compatible with the same mating receptacles?

A: Yes. All substitute parts maintain the 0.100" (2.54mm) pitch, 26-position configuration, 2-row layout, and shrouded 4-wall construction. They are mechanically and electrically compatible with receptacles designed for the original 3429-5003.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message