CWN-352-20-0021 Equivalent & Substitute Parts

Part Overview

The CWN-352-20-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This shrouded 20-position header with 2.54mm pitch serves board-to-cable/wire interconnection requirements. The part is currently active in production with 922 units in stock. 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	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Contact Material	Phosphor Bronze
Contact Finish - Mating	Gold
Insulation Material	Thermoplastic
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	1A
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-352-20-0021 is determined by strict alignment of the following critical parameters:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 20
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Shrouding: Shrouded - 4 Wall
Mounting Type: Through Hole
Termination: Solder
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

All three substitute parts (71918-020LF, N3428-6002RB, N3428-6003RB) meet these core substitution criteria. Variations in contact length, contact shape, fastening type, and insulation material composition do not preclude substitution when the mating interface and electrical performance requirements remain compatible with the application circuit board design.

Parameter Comparison

Parameter	CWN-352-20-0021	71918-020LF	N3428-6002RB	N3428-6003RB
Manufacturer	CW Industries	Amphenol ICC (FCI)	3M	3M
Series	CWN	Quickie™	3000	3000
Connector Type	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20	20
Number of Rows	2	2	2	2
Pitch - Mating	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)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder
Contact Shape	Circular	Square	Square	Square
Contact Length - Mating	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.090" (2.29mm)	0.114" (2.90mm)	0.112" (2.84mm)	0.155" (3.94mm)
Insulation Height	0.681" (17.30mm)	0.685" (17.40mm)	0.680" (17.27mm)	0.680" (17.27mm)
Contact Finish - Mating	Gold	Gold, GXT™	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Material	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Copper Alloy
Insulation Material	Thermoplastic	Thermoplastic, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	1A	Not specified	1.75A	1.75A
Operating Temperature	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-55°C ~ 105°C
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All three substitute parts maintain active production status and comply with RoHS and REACH regulatory requirements. The CWN-352-20-0021 operates across -55°C to 125°C, while the 3M alternatives (N3428-6002RB and N3428-6003RB) are rated to -55°C to 105°C. Applications requiring operation above 105°C must retain the CWN-352-20-0021 or 71918-020LF, for which operating temperature is not specified but should be confirmed with the manufacturer.

The 3M parts deliver higher current capacity (1.75A versus 1A), making them suitable for applications with elevated current requirements. Contact post length varies across the substitute options, with N3428-6003RB providing the longest post (0.155" / 3.94mm) for applications requiring extended board-to-connector engagement depth.

All parts carry UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating, confirming compatibility with standard PCB assembly and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the 71918-020LF replace the CWN-352-20-0021 in all applications?

A: The 71918-020LF meets all core substitution criteria including connector type, position count, pitch, shrouding, and mounting method. The primary difference is contact shape (square versus circular). Compatibility depends on the mating connector design. If the mating connector accepts both contact geometries, substitution is valid. Operating temperature for the 71918-020LF is not specified in the datasheet and should be confirmed before use in temperature-critical applications.

Q: What is the difference between N3428-6002RB and N3428-6003RB?

A: Both parts are from the 3M 3000 series and share identical electrical and mechanical specifications except for contact post length. The N3428-6002RB has a 0.112" (2.84mm) post, while the N3428-6003RB has a 0.155" (3.94mm) post. Selection depends on the required board thickness and connector engagement depth for your application.

Q: Are there temperature limitations when substituting with 3M parts?

A: The N3428-6002RB and N3428-6003RB are rated to -55°C to 105°C, which is 20°C lower than the CWN-352-20-0021 maximum of 125°C. Applications requiring sustained operation above 105°C must use the CWN-352-20-0021 or confirm the 71918-020LF operating temperature with Amphenol ICC.

Q: Do the substitute parts support the same current levels?

A: The CWN-352-20-0021 is rated at 1A per contact. The 3M parts (N3428-6002RB and N3428-6003RB) are rated at 1.75A per contact, providing higher current capacity. The 71918-020LF current rating is not specified. For applications requiring 1A or less, all parts are suitable. For higher current applications, the 3M alternatives are preferred.

Q: What packaging options are available?

A: The CWN-352-20-0021 is supplied in standard packaging (not specified). The 71918-020LF is supplied in tube packaging. The N3428-6002RB and N3428-6003RB are supplied in bulk packaging. Packaging selection may affect procurement lead times and handling requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The CWN-352-20-0021, N3428-6002RB, and N3428-6003RB are ROHS3 compliant. The 71918-020LF is RoHS compliant. All parts are REACH unaffected and carry EAR99 export classification.

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