CWN-352-40-0021 Equivalent & Substitute Parts

Part Overview

The CWN-352-40-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This vertical 40-position connector operates at 0.100" (2.54mm) pitch with dual-row configuration and shrouded 4-wall design. The part is Active status with 1011 units in stock inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component interchange based on electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	40
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
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CWN-352-40-0021 are qualified based on the following critical parameters that must match or exceed the main part specifications:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 40
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
Termination: Solder
Material Flammability Rating: UL94 V-0
RoHS Compliance: ROHS3 or RoHS Compliant

The following parts meet these criteria and are listed as qualified substitutes:

HARTING 09185406924 (SEK Series)
HARTING 09185407924 (SEK Series)
Amphenol ICC (FCI) 71918-040LF (Quickie™ Series)
3M N3432-6002RB (3000 Series)

Parameter Comparison

Parameter	CWN-352-40-0021	09185406924	09185407924	71918-040LF	N3432-6002RB
Manufacturer	CW Industries	HARTING	HARTING	Amphenol ICC (FCI)	3M
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	40	40	40	40	40
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder
Fastening Type	Latch Lock/Eject Hooks, Long	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)
Contact Length - Post	0.090" (2.29mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.112" (2.84mm)
Insulation Height	0.681" (17.30mm)	0.681" (17.30mm)	0.681" (17.30mm)	0.685" (17.40mm)	0.680" (17.27mm)
Contact Shape	Circular	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold, GXT™	Gold
Contact Finish - Post	Nickel	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Copper Alloy	Copper Alloy	Phosphor Bronze	Copper Alloy
Insulation Material	Thermoplastic	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Thermoplastic, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	Not specified	Not specified	Not specified	1.75A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	1011 Pcs In Stock	1116 Pcs In Stock	835 Pcs In Stock	1395 Pcs In Stock	791 Pcs In Stock

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and comply with RoHS requirements. Selection between the CWN-352-40-0021 and substitute parts should be based on the following considerations:

CWN-352-40-0021 (CW Industries): Primary choice with established supply chain. Features latch lock/eject hooks with long fastening type, nickel post finish, and circular contact geometry. Rated for 1A current at -55°C to 125°C operating range.

09185406924 and 09185407924 (HARTING SEK Series): Functionally equivalent alternatives with push-pull fastening type and square contact geometry. Both rated for -55°C to 125°C. Tin post finish and PBT glass-filled insulation material. ROHS3 compliant. Identical mating contact length and insulation height to primary part.

71918-040LF (Amphenol ICC Quickie™ Series): Alternative with push-pull fastening and phosphor bronze contact material matching the primary part. GXT™ gold mating finish provides enhanced contact durability. Thermoplastic glass-filled insulation. RoHS compliant. Mating contact length is 0.228" (5.80mm), which is 0.012" shorter than the primary part.

N3432-6002RB (3M 3000 Series): Alternative with highest current rating at 1.75A. Push-pull fastening type with square contact geometry. Operating temperature range limited to -55°C to 105°C. PCT polyester glass-filled insulation. RoHS compliant. Post contact length is 0.112" (2.84mm).

Frequently Asked Questions (FAQ)

Q: Can I substitute any of these parts directly for the CWN-352-40-0021?

A: All listed parts share the same critical mating parameters: 40 positions, 2 rows, 0.100" (2.54mm) pitch, through-hole mounting, shrouded 4-wall design, and solder termination. Physical board-level compatibility is maintained. Differences exist in fastening type, contact geometry, and post dimensions that may affect mating connector selection and PCB layout considerations.

Q: What is the difference between the fastening types?

A: The CWN-352-40-0021 uses latch lock/eject hooks with long fastening type. All substitute parts use push-pull fastening. These are mechanically distinct engagement mechanisms and require compatible mating connectors. Verify mating connector compatibility before substitution.

Q: Are there temperature rating differences I should consider?

A: The CWN-352-40-0021, HARTING parts, and 71918-040LF are rated for -55°C to 125°C. The 3M N3432-6002RB is rated for -55°C to 105°C. For applications requiring operation above 105°C, the 3M part is not suitable.

Q: What is the significance of contact shape differences?

A: The CWN-352-40-0021 features circular contact geometry. HARTING and 3M substitute parts use square contact geometry. The 71918-040LF uses square contacts. Contact shape affects mating connector compatibility and insertion force characteristics. Verify mating connector specifications before substitution.

Q: Do all parts have the same current rating?

A: No. The CWN-352-40-0021 is rated for 1A. The 3M N3432-6002RB is rated for 1.75A. HARTING and Amphenol ICC parts do not specify current ratings in the provided data. For applications requiring current ratings above 1A, the 3M part provides higher capacity.

Q: What packaging options are available?

A: CWN-352-40-0021 is supplied in standard packaging. HARTING parts (09185406924, 09185407924) are supplied in bulk packaging. The 71918-040LF is supplied in tube packaging. The 3M N3432-6002RB is supplied in bulk packaging. Packaging selection may affect procurement lead times and handling requirements.

Q: Are all parts RoHS compliant?

A: Yes. The CWN-352-40-0021, HARTING parts, and 71918-040LF are ROHS3 compliant. The 3M N3432-6002RB is RoHS compliant. All parts meet REACH requirements and carry EAR99 ECCN classification.

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