CWN-512-40-0021 Equivalent & Substitute Parts

Part Overview

The CWN-512-40-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole, right-angle board-to-cable/wire applications. This shrouded 40-position header with 2.54mm pitch and male pin contacts operates across -55°C to 125°C and is rated for 1A current. The part is active in production and ROHS3 compliant. Substitute parts may be required due to inventory constraints, regional availability, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CWN-512-40-0021

CW IndustriesIn Stock: 798CWN-512-40-0021 Datasheet

Current PartRFQ

09185506323

HARTINGIn Stock: 76409185506323 Datasheet

SimilarRFQ

71922-040LF

Amphenol ICC (FCI)In Stock: 102771922-040LF Datasheet

SimilarRFQ

N3432-5002RB

3MIn Stock: 904N3432-5002RB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-512-40-0021 is determined by the following critical parameters:

• Connector Type & Contact Configuration: Header with male pin contacts
• 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: Shrouded 4-wall design
• Termination Method: Solder termination
• Thermal Range: Operating temperature compatibility
• Compliance: UL94 V-0 flammability rating and RoHS status

The substitute parts listed (71922-040LF, 09185506323, N3432-5002RB) share the core electrical and mechanical specifications required for direct functional replacement in standard applications. Variations in contact material, contact finish thickness, insulation material composition, and fastening mechanism do not preclude substitution when the primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

71922-040LF (Amphenol ICC - Quickie™ Series): This part matches the CWN-512-40-0021 in all critical mechanical and electrical parameters including 40-position configuration, 2.54mm pitch, through-hole right-angle mounting, and UL94 V-0 compliance. RoHS compliance is confirmed. This substitute is suitable for direct replacement in standard applications.

N3432-5002RB (3M - 3000 Series): This part provides equivalent 40-position, 2.54mm pitch header functionality with through-hole right-angle mounting and UL94 V-0 compliance. The operating temperature range extends to -55°C but is limited to 105°C maximum, compared to 125°C for the main part. Current rating is specified at 1.75A, exceeding the main part's 1A rating. RoHS compliance is confirmed. This substitute is suitable for applications within the -55°C to 105°C thermal envelope.

09185506323 (HARTING - SEK Series): This part features 50 positions in a 2-row configuration with 2.54mm pitch and through-hole right-angle mounting. The additional 10 positions represent a functional extension rather than a direct replacement. UL94 V-0 compliance and RoHS3 compliance are confirmed. This substitute is applicable only when the additional positions can be accommodated in the application design.

All substitute parts maintain active product status and unlimited moisture sensitivity level (MSL 1), ensuring long-term availability and storage compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can 71922-040LF directly replace CWN-512-40-0021 in my application?

A: Yes. Both parts share identical 40-position, 2-row configuration with 0.100" (2.54mm) pitch, through-hole right-angle mounting, shrouded 4-wall design, and solder termination. Electrical and mechanical compatibility is confirmed. Verify that your PCB layout and mating connector are designed for standard 2.54mm pitch headers.

Q: What is the thermal limitation when using N3432-5002RB as a substitute?

A: The N3432-5002RB operates from -55°C to 105°C, whereas the CWN-512-40-0021 operates to 125°C. If your application requires operation above 105°C, this substitute is not suitable. For applications within the -55°C to 105°C range, this part is fully compatible.

Q: Why is 09185506323 listed as a substitute if it has 50 positions instead of 40?

A: The 09185506323 maintains the same 0.100" (2.54mm) pitch, 2-row configuration, through-hole right-angle mounting, and shrouded design. The 50-position variant can function as a substitute only if your application design accommodates the additional 10 positions or if those positions remain unloaded. This part is not suitable for direct drop-in replacement on PCBs designed specifically for 40-position headers.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitutes (71922-040LF, N3432-5002RB, 09185506323) are RoHS compliant. The main part CWN-512-40-0021 is ROHS3 compliant, and all substitutes meet or exceed this compliance level.

Q: What packaging formats are available for these parts?

A: CWN-512-40-0021 is supplied in standard packaging. 71922-040LF is supplied in tube packaging. N3432-5002RB is supplied in bulk packaging. 09185506323 is supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Do all substitutes support the same current rating?

A: The CWN-512-40-0021 is rated for 1A. The N3432-5002RB is rated for 1.75A, providing higher current capacity. The 71922-040LF and 09185506323 do not specify current ratings in the available data. For applications requiring confirmed current specifications, consult the detailed datasheets or contact the manufacturers directly.