CWN-351-26-0021 Equivalent & Substitute Parts

Part Overview

The CW Industries CWN-351-26-0021 is a rectangular connector header for through-hole mounting with 26 positions at 2.54mm pitch. This shrouded, dual-row male pin header is designed for board-to-cable/wire applications with solder termination and latch lock/eject fastening. The part is currently active in production with 946 units in stock.

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	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 - 4 Wall
Operating Temperature	-55°C ~ 125°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-351-26-0021 is determined by the following critical parameters:

Primary Matching Criteria:

Number of Positions: 26
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Shrouding: Shrouded - 4 Wall

Secondary Compatibility Factors:

Operating Temperature Range: -55°C ~ 125°C or compatible subset
Material Flammability Rating: UL94 V-0
Contact Finish - Mating: Gold
Insulation Material: Thermoplastic or equivalent
Fastening Type: Latch-based mechanisms

The substitute parts listed below meet the primary matching criteria. Variations in contact material, contact finish thickness, insulation height, and fastening mechanism details do not prevent functional substitution when the core electrical and mechanical parameters align.

Parameter Comparison

Parameter	CWN-351-26-0021 (CW Industries)	09185306324 (HARTING)	3429-6002 (3M)	D3429-6002-AR (3M)	N3429-6002RB (3M)	N3429-6003RB (3M)
Number of Positions	26	30	26	26	26	26
Number of Rows	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)
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)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating	1A	Not specified	1A	1.75A	1.75A	1.75A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Product Status	Active	Active	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
Packaging	Bulk	Bulk	Bulk	Tray	Bulk	Bulk
Inventory	946 Pcs	899 Pcs	1051 Pcs	1805 Pcs	1077 Pcs	1014 Pcs

Engineering Selection Recommendations

Direct Substitutes (26-Position, 2-Row Configuration):

The 3M parts D3429-6002-AR, N3429-6002RB, and N3429-6003RB are functionally equivalent to the CWN-351-26-0021 for applications requiring 26-position, dual-row headers at 2.54mm pitch. All three maintain the same connector geometry, pitch spacing, and shrouded 4-wall design.

D3429-6002-AR is recommended for new designs requiring active product status and ROHS3 compliance. This part is available in tray packaging with the highest inventory level (1805 units) and supports a higher current rating of 1.75A compared to the primary part's 1A rating.

N3429-6002RB and N3429-6003RB are suitable alternatives with active product status and full RoHS compliance. The primary difference between these two 3M parts is the contact length post: N3429-6002RB features 0.112" (2.84mm) post length, while N3429-6003RB features 0.155" (3.94mm) post length. Selection between these variants depends on PCB thickness and solder joint requirements.

The 3M 3429-6002 is not recommended for new designs due to its obsolete product status and RoHS non-compliance, despite meeting the core electrical and mechanical specifications.

Non-Direct Substitute:

The HARTING 09185306324 differs in position count (30 positions versus 26) and is not a direct substitute. This part is listed only for reference and should not be used as a replacement for the CWN-351-26-0021 without design modification.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09185306324 be used as a substitute for the CWN-351-26-0021?

A: No. The HARTING part has 30 positions compared to the CWN-351-26-0021's 26 positions. While both maintain 2.54mm pitch and 2-row configuration, the increased position count makes this part incompatible with designs expecting 26-position connectors. Physical mating and electrical connectivity cannot be guaranteed.

Q: What is the difference between the 3M N3429-6002RB and N3429-6003RB?

A: Both parts are electrically and mechanically equivalent with identical pitch, position count, and shrouding. The primary difference is contact post length: N3429-6002RB has 0.112" (2.84mm) post length, while N3429-6003RB has 0.155" (3.94mm) post length. Selection depends on PCB thickness and solder joint depth requirements for your application.

Q: Why is the 3M 3429-6002 listed as a substitute if it is obsolete?

A: The 3429-6002 meets all core electrical and mechanical parameters for substitution. However, its obsolete product status and RoHS non-compliance make it unsuitable for new designs. It is listed for reference only when servicing legacy equipment or when RoHS compliance is not required.

Q: Does the higher current rating of D3429-6002-AR (1.75A) versus the CWN-351-26-0021 (1A) affect compatibility?

A: No. A substitute part with a higher current rating is compatible with applications designed for the lower rating. The higher rating indicates the substitute can safely handle greater current without degradation. Applications requiring the full 1.75A capability should verify the mating connector and circuit design support this current level.

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

A: The CWN-351-26-0021 and most 3M substitutes are supplied in bulk packaging. The D3429-6002-AR is available in tray packaging, which may be preferred for automated assembly processes or when specific packaging requirements are mandated by procurement specifications.

Q: Are all listed substitutes ROHS3 compliant?

A: No. The 3M 3429-6002 is RoHS non-compliant. The CWN-351-26-0021, HARTING 09185306324, D3429-6002-AR, and N3429-6003RB are ROHS3 compliant. The N3429-6002RB is RoHS compliant. Verify compliance requirements for your application before part selection.

Q: Can these connectors be used in the -55°C to 125°C temperature range?

A: The CWN-351-26-0021 and HARTING 09185306324 are rated for -55°C to 125°C operation. The 3M parts (3429-6002, D3429-6002-AR, N3429-6002RB, N3429-6003RB) are rated for -55°C to 105°C. Applications requiring operation above 105°C must use the CWN-351-26-0021 or HARTING 09185306324.

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