CWN-350-26-0021 Equivalent & Substitute Parts

Part Overview

The CWN-350-26-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This 26-position, 2-row connector operates at 0.100" (2.54mm) pitch and supports board-to-cable/wire connections with push-pull fastening. The part is currently active in production with 762 units in stock. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives that meet the same electrical and mechanical requirements.

Key Parameters

Parameter	CWN-350-26-0021
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 - 4 Wall
Fastening Type	Push-Pull
Current Rating	1A
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-350-26-0021 is determined by the following critical parameters:

Connector Type, Contact Type, Number of Positions, Number of Rows: All substitute parts must be headers with male pins in 26-position, 2-row configuration
Pitch and Row Spacing: All substitutes must maintain 0.100" (2.54mm) mating pitch and row spacing for mechanical compatibility
Mounting Type and Termination: Through-hole solder termination is required for PCB integration compatibility
Shrouding and Fastening: 4-wall shrouding with push-pull fastening must be present
Contact Length - Mating: 0.240" (6.10mm) mating contact length is a critical dimension for mating interface compatibility

The four substitute parts identified (3429-6002, D3429-6002-AR, N3429-6002RB, N3429-6003RB) meet these core mechanical and electrical requirements. Variations in contact post length, contact material, insulation material, and finish specifications are allowable within the scope of rectangular connector design standards, provided the mating interface dimensions remain consistent.

Parameter Comparison

Parameter	CWN-350-26-0021	3429-6002	D3429-6002-AR	N3429-6002RB	N3429-6003RB
Manufacturer	CW Industries	3M	3M	3M	3M
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	26	26	26	26	26
Number of Rows	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)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Current Rating	1A	1A	1.75A	1.75A	1.75A
Operating Temperature	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
Product Status	Active	Obsolete	Active	Active	Active
Packaging	Bulk	Bulk	Tray	Bulk	Bulk

Engineering Selection Recommendations

D3429-6002-AR is the primary recommended substitute. It is ROHS3 compliant, currently active in production, and available in tray packaging with 1805 units in stock. The higher current rating of 1.75A provides additional design margin. The reduced operating temperature maximum of 105°C versus 125°C must be evaluated against application requirements.

N3429-6002RB and N3429-6003RB are secondary alternatives, both ROHS3 compliant and active. N3429-6002RB maintains the same contact post length as D3429-6002-AR (0.112"), while N3429-6003RB features an extended contact post length of 0.155" (3.94mm), resulting in an overall contact length of 0.695" (17.65mm). The extended post length of N3429-6003RB may affect PCB stack-up and should be verified against board thickness specifications.

3429-6002 is not recommended for new designs. Although mechanically compatible, this part is obsolete and RoHS non-compliant, making it unsuitable for applications requiring regulatory compliance.

All recommended substitutes operate within the -55°C to 105°C temperature range and maintain UL94 V-0 flammability ratings. Current ratings of 1.75A exceed the original 1A specification, providing compatibility for applications within the original current envelope.

Frequently Asked Questions (FAQ)

Q: Can N3429-6003RB be used as a direct replacement for CWN-350-26-0021?

A: N3429-6003RB is mechanically and electrically compatible for mating interface purposes. However, the extended contact post length of 0.155" (3.94mm) versus the original 0.090" (2.29mm) results in a different overall contact length of 0.695" (17.65mm). This dimension must be verified against PCB thickness and solder joint requirements before implementation.

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

A: Both parts share identical mating dimensions and contact post length (0.112"). D3429-6002-AR is packaged in trays and uses tin finish on posts, while N3429-6002RB is bulk packaged with tin finish. D3429-6002-AR uses brass contact material; N3429-6002RB uses copper alloy. Both are ROHS3 compliant and active in production.

Q: Why does the operating temperature range differ between CWN-350-26-0021 and the 3M substitutes?

A: The CWN-350-26-0021 operates to 125°C, while 3M substitutes are rated to 105°C maximum. This reflects different insulation material specifications. Applications requiring operation above 105°C must retain the original CWN-350-26-0021 part.

Q: Is 3429-6002 suitable for new product designs?

A: No. Although 3429-6002 is mechanically compatible, it is obsolete and RoHS non-compliant. New designs must use D3429-6002-AR, N3429-6002RB, or N3429-6003RB to meet current regulatory requirements.

Q: What packaging options are available for these substitutes?

A: CWN-350-26-0021 and N3429-6002RB and N3429-6003RB are supplied in bulk packaging. D3429-6002-AR is supplied in tray packaging. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Are all substitute parts RoHS compliant?

A: D3429-6002-AR, N3429-6002RB, and N3429-6003RB are ROHS3 compliant. The original CWN-350-26-0021 is also ROHS3 compliant. The 3429-6002 part is RoHS non-compliant and should not be used in new designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message