CWN-552-40-0021 Equivalent & Substitute Parts

Part Overview

The CWN-552-40-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This 40-position, 2-row connector with 0.100" (2.54mm) pitch is configured for board-to-cable/wire connections with solder termination. The part is currently active in production with 1038 units in stock. Equivalent and substitute parts are identified to provide design flexibility, ensure supply chain continuity, and accommodate specific application requirements where mechanical or electrical parameter variations are acceptable within the allowed tolerance range.

Substiute Parts

CWN-552-40-0021

CW IndustriesIn Stock: 1096CWN-552-40-0021 Datasheet

Current PartRFQ

09185406924

HARTINGIn Stock: 114409185406924 Datasheet

SimilarRFQ

71918-040LF

Amphenol ICC (FCI)In Stock: 142271918-040LF Datasheet

SimilarRFQ

N3432-6002RB

3MIn Stock: 900N3432-6002RB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-552-40-0021 is determined by strict alignment of the following critical parameters:

• Connector Type: Header (fixed requirement)
• Contact Type: Male Pin (fixed requirement)
• Number of Positions: 40 (fixed requirement)
• Number of Rows: 2 (fixed requirement)
• Pitch - Mating: 0.100" (2.54mm) (fixed requirement)
• Row Spacing - Mating: 0.100" (2.54mm) (fixed requirement)
• Mounting Type: Through Hole (fixed requirement)
• Termination: Solder (fixed requirement)
• Shrouding: Shrouded - 4 Wall (fixed requirement)
• Material Flammability Rating: UL94 V-0 (fixed requirement)
• RoHS Status: ROHS3 or RoHS Compliant (acceptable)
• Moisture Sensitivity Level: 1 (Unlimited) (fixed requirement)

All three substitute parts—09185406924 (HARTING), 71918-040LF (Amphenol ICC/FCI), and N3432-6002RB (3M)—meet these critical substitution criteria. Variations in contact finish, contact material, insulation material, fastening type, and contact dimensions are within acceptable tolerance ranges for this connector category and do not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with full RoHS compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage conditions.

CWN-552-40-0021 (CW Industries): Primary specification with 1A current rating and nickel post finish. Suitable for standard applications requiring the specified fastening mechanism.

09185406924 (HARTING SEK Series): ROHS3 compliant equivalent with 1116 units in stock. Features push-pull fastening and PBT glass-filled insulation. Current rating not specified; verify against application requirements if current capacity is critical.

71918-040LF (Amphenol ICC/FCI Quickie™ Series): RoHS compliant with 1395 units in stock. Packaged in tube format. Features push-pull fastening and GXT™ gold mating finish. Operating temperature range not specified; applications requiring the full -55°C to 125°C range should reference manufacturer documentation.

N3432-6002RB (3M 3000 Series): RoHS compliant with 1.75A current rating and 791 units in stock. Features push-pull fastening and PCT/polyester glass-filled insulation. Operating temperature range limited to -55°C to 105°C; not suitable for applications requiring operation above 105°C.

Frequently Asked Questions (FAQ)

Q: Can I use 09185406924 (HARTING) as a direct replacement for CWN-552-40-0021?

A: Yes. Both connectors share identical pitch (0.100"), position count (40), row configuration (2), mounting type (through hole), termination (solder), and shrouding (4-wall). Both are ROHS3 compliant with MSL 1 ratings. The primary difference is fastening type (push-pull vs. latch lock/eject hooks). Verify mechanical fit in your application enclosure.

Q: What is the difference between the contact finishes on these parts?

A: CWN-552-40-0021 uses nickel post finish, while 09185406924, 71918-040LF, and N3432-6002RB use tin post finish. All use gold mating finish. Tin post finish is standard in the industry and provides equivalent electrical performance. Selection depends on soldering process compatibility and specific application requirements.

Q: Is N3432-6002RB suitable for high-temperature applications?

A: N3432-6002RB operates from -55°C to 105°C. The CWN-552-40-0021 operates from -55°C to 125°C. For applications requiring operation above 105°C, use CWN-552-40-0021, 09185406924, or verify 71918-040LF operating temperature with the manufacturer.

Q: What is the current rating difference between these parts?

A: CWN-552-40-0021 is rated at 1A per contact. N3432-6002RB is rated at 1.75A per contact. Current ratings for 09185406924 and 71918-040LF are not specified in the provided data. For applications with current requirements above 1A, use N3432-6002RB or contact the manufacturer for 09185406924 and 71918-040LF specifications.

Q: Do all these connectors have the same insulation material?

A: No. CWN-552-40-0021 uses thermoplastic insulation. 09185406924 uses PBT glass-filled, 71918-040LF uses thermoplastic glass-filled, and N3432-6002RB uses PCT/polyester glass-filled. All meet UL94 V-0 flammability requirements. Glass-filled variants provide enhanced mechanical and thermal properties.

Q: What packaging options are available?

A: CWN-552-40-0021 packaging is not specified. 09185406924 is supplied in bulk. 71918-040LF is supplied in tube. N3432-6002RB is supplied in bulk. Confirm packaging requirements with your procurement process.