CWN-551-40-0000 Equivalent & Substitute Parts

Part Overview

The CWN-551-40-0000 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 serves board-to-cable/wire interconnection requirements. The part is currently active in production with 651 units in stock. Substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications requiring equivalent electrical and mechanical performance.

Substiute Parts

CWN-551-40-0000

CW IndustriesIn Stock: 758CWN-551-40-0000 Datasheet

Current PartRFQ

09185406924

HARTINGIn Stock: 114409185406924 Datasheet

SimilarRFQ

09185407924

HARTINGIn Stock: 86209185407924 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

Substitute parts for the CWN-551-40-0000 are qualified based on the following critical parameters that must match or be compatible:

• Connector Type & Contact Type: Header with Male Pin contacts
• Position Count & Row Configuration: 40 positions in 2-row arrangement
• Pitch Specifications: 0.100" (2.54mm) mating pitch and row spacing
• Mounting & Termination: Through-hole solder termination
• Shrouding: Shrouded 4-wall design
• Environmental Compliance: UL94 V-0 flammability rating, RoHS compliance, MSL 1

The following parts meet these substitution criteria:

1. 09185406924 (HARTING SEK Series)
2. 09185407924 (HARTING SEK Series)
3. 71918-040LF (Amphenol ICC Quickie™ Series)
4. N3432-6002RB (3M 3000 Series)

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are active products with full RoHS compliance and MSL 1 rating, ensuring equivalent environmental and regulatory compliance to the CWN-551-40-0000.

CWN-551-40-0000 (Primary Part): Recommended for applications requiring nickel post finish and circular contact geometry. Operating temperature range extends to 125°C. Current rating of 1A is specified.

09185406924 & 09185407924 (HARTING SEK Series): Functionally equivalent alternatives with identical pitch, position count, and row spacing. Both feature push-pull fastening and glass-filled PBT insulation. Square contact geometry and tin post finish differ from the primary part. Highest inventory availability (1116 and 835 units respectively).

71918-040LF (Amphenol ICC Quickie™ Series): Offers highest inventory availability (1395 units) with phosphor bronze contacts matching the primary part material. Features GXT™ gold mating finish and glass-filled thermoplastic insulation. Mating contact length is 0.228" (5.80mm), slightly shorter than the primary part. Operating temperature range not specified.

N3432-6002RB (3M 3000 Series): Provides highest current rating at 1.75A, exceeding the primary part's 1A specification. Operating temperature range limited to -55°C ~ 105°C. Glass-filled PCT/polyester insulation and tin post finish. Square contact geometry with push-pull fastening.

Frequently Asked Questions (FAQ)

Q: Can I substitute any of these parts directly into an application designed for CWN-551-40-0000?

A: Direct substitution depends on specific application requirements. All substitute parts share identical pitch (0.100"), position count (40), row configuration (2), mounting type (through-hole), and shrouding (4-wall). However, differences exist in fastening type (push-pull vs. latch lock), contact geometry (square vs. circular), post finish (tin vs. nickel), and insulation materials. Verify mechanical fit and electrical performance requirements before substitution.

Q: What is the difference between the two HARTING parts (09185406924 and 09185407924)?

A: Both HARTING SEK series parts are functionally identical in electrical and mechanical specifications. They share the same pitch, position count, row spacing, contact materials, and insulation properties. The parts are interchangeable for equivalent applications.

Q: Does the contact shape difference (circular vs. square) affect compatibility?

A: Contact shape affects mating interface geometry and insertion force characteristics. The primary CWN-551-40-0000 features circular contacts, while substitute parts 09185406924, 09185407924, and N3432-6002RB use square contacts. Compatibility depends on the mating connector design. Verify mating connector specifications before substitution.

Q: Which substitute part has the best current-carrying capacity?

A: The N3432-6002RB (3M 3000 Series) is rated for 1.75A, exceeding the primary part's 1A specification. The HARTING and Amphenol ICC parts do not specify current ratings. For high-current applications, N3432-6002RB provides additional margin.

Q: Are there temperature range limitations I should consider?

A: The primary CWN-551-40-0000 and HARTING parts (09185406924, 09185407924) operate across -55°C ~ 125°C. The N3432-6002RB is limited to -55°C ~ 105°C. The Amphenol ICC 71918-040LF does not specify an operating temperature range. For applications requiring full -55°C ~ 125°C operation, use CWN-551-40-0000, 09185406924, or 09185407924.

Q: What packaging options are available?

A: CWN-551-40-0000 is supplied in standard packaging (not specified). HARTING parts (09185406924, 09185407924) are packaged in bulk. Amphenol ICC 71918-040LF is supplied in tubes. 3M N3432-6002RB is packaged in bulk. Verify packaging requirements for your procurement and assembly processes.

Q: Do all parts meet the same compliance standards?

A: All parts are UL94 V-0 rated and RoHS compliant. CWN-551-40-0000, 09185406924, and 09185407924 are ROHS3 compliant. Amphenol ICC 71918-040LF and 3M N3432-6002RB are RoHS compliant. All parts have MSL 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected for all parts.