CWN-502-40-0021 Equivalent & Substitute Parts

Part Overview

The CWN-502-40-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole, right-angle mounting applications. This 40-position, 2-row connector with 0.100" (2.54mm) pitch is actively produced and widely used in board-to-cable/wire interconnect applications. The part is RoHS3 compliant and rated for operating temperatures from -55°C to 125°C. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives.

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, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS3 Compliant
Current Rating	1A

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-502-40-0021 is determined by the following critical parameters:

Connector Type & Contact Configuration: Header with male pins
Position Count & Row Configuration: 40 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting Orientation: Through-hole, right-angle mounting
Shrouding: 4-wall shrouded design
Termination Method: Solder termination
Compliance: RoHS3 compliance and UL94 V-0 flammability rating

The identified substitute parts meet these core electrical and mechanical parameters. Variations in contact shape, contact finish materials, fastening mechanisms, and insulation materials are permitted within the substitution group, as these do not affect the fundamental mating interface or board-level compatibility.

Parameter Comparison

Parameter	CWN-502-40-0021 (CW Industries)	09185407914 (HARTING)	71922-040LF (Amphenol ICC)	N3432-5002RB (3M)
Connector Type	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	40	40	40	40
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)
Mounting Type	Through Hole, Right Angle	Through Hole	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are actively produced and maintain RoHS compliance status. Selection among the CWN-502-40-0021 and its substitutes should be based on:

Primary Criteria:

Availability and lead time requirements
Packaging format (tube vs. bulk)
Current inventory levels

Secondary Considerations:

Operating temperature range: The CWN-502-40-0021 and 71922-040LF support -55°C to 125°C; the N3432-5002RB supports -55°C to 105°C. Applications requiring operation above 105°C must use CWN-502-40-0021 or 71922-040LF.
Current rating: The CWN-502-40-0021 is rated at 1A; the N3432-5002RB is rated at 1.75A. Applications with higher current requirements should specify N3432-5002RB.
Mounting orientation: The 09185407914 (HARTING) features vertical through-hole mounting, differing from the right-angle orientation of other substitutes. This part is suitable only for applications requiring vertical header orientation.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09185407914 be used as a direct substitute for the CWN-502-40-0021?

A: The 09185407914 shares the same 40-position, 2-row, 2.54mm pitch configuration and 4-wall shrouding. However, it features vertical through-hole mounting rather than right-angle mounting. It is a substitute only for applications where vertical header orientation is acceptable. Board layout compatibility must be verified before substitution.

Q: What is the difference between the Amphenol ICC 71922-040LF and the CWN-502-40-0021?

A: Both parts are right-angle headers with identical pitch, position count, and shrouding. The 71922-040LF uses a push-pull fastening mechanism and square contact shape, while the CWN-502-40-0021 uses latch lock/eject hooks with circular contacts. Both support the same operating temperature range (-55°C to 125°C) and are UL94 V-0 rated. Mating interface compatibility depends on the corresponding connector socket design.

Q: Is the 3M N3432-5002RB suitable for high-temperature applications?

A: The N3432-5002RB operates from -55°C to 105°C, which is 20°C lower than the CWN-502-40-0021 and 71922-040LF. For applications requiring operation above 105°C, use the CWN-502-40-0021 or 71922-040LF.

Q: What packaging options are available?

A: The CWN-502-40-0021 is supplied in standard packaging; the 71922-040LF is supplied in tube packaging; the 09185407914 and N3432-5002RB are supplied in bulk packaging. Packaging selection may affect handling, storage, and automated assembly compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. The CWN-502-40-0021, 09185407914, and 71922-040LF are RoHS3 compliant. The N3432-5002RB is RoHS compliant. All parts meet the flammability requirement of UL94 V-0 and have moisture sensitivity level 1 (unlimited).

Q: What is the current rating difference between parts?

A: The CWN-502-40-0021 is rated at 1A. The N3432-5002RB is rated at 1.75A. Current ratings for the 09185407914 and 71922-040LF are not specified in the technical data. For applications requiring current ratings above 1A, the N3432-5002RB is the specified choice.

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