CWN-651-20-0000 Equivalent & Substitute Parts

Part Overview

The CWN-651-20-0000 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 Active status and widely used in electronic assemblies requiring reliable vertical header connections. Substitute parts may be required due to inventory availability, lead time constraints, or specific application compatibility needs.

Substiute Parts

CWN-651-20-0000

CW IndustriesIn Stock: 944CWN-651-20-0000 Datasheet

Current PartRFQ

N3428-6002RB

3MIn Stock: 1411N3428-6002RB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The N3428-6002RB from 3M qualifies as a substitute for the CWN-651-20-0000 based on the following critical parameters:

• Connector Type & Contact Configuration: Both are male pin headers with identical 20-position, 2-row configuration
• Pitch Specification: Both maintain 0.100" (2.54mm) mating pitch and row spacing
• Mounting & Termination: Both are through-hole solder-terminated connectors with shrouded 4-wall design
• Electrical Compliance: Both are ROHS3 compliant and UL94 V-0 rated
• Moisture Sensitivity: Both rated MSL 1 (Unlimited)
• Contact Material & Finish: Both feature gold-plated mating surfaces suitable for reliable interconnection

Substitution is valid where the application tolerates the specified parameter variations documented in the Parameter Comparison table.

Parameter Comparison

Engineering Selection Recommendations

Both the CWN-651-20-0000 and N3428-6002RB are Active status products with ROHS3 compliance and UL94 V-0 flammability ratings, making them suitable for equivalent applications in compliant assemblies.

The N3428-6002RB offers higher current capacity (1.75A vs. 1A) and thicker post plating (200.0µin vs. 50.0µin), providing enhanced durability in high-cycle mating applications. The CWN-651-20-0000 supports a higher maximum operating temperature (125°C vs. 105°C), making it preferable for thermal-constrained environments.

Contact geometry differences (circular vs. square pins) and fastening mechanisms (latch lock vs. push-pull) must be evaluated against specific mating connector requirements and assembly procedures. Post length variation (0.090" vs. 0.112") may affect PCB layout and solder joint geometry.

Selection should be based on application temperature requirements, mating cycle expectations, and compatibility with corresponding receptacle connectors.

Frequently Asked Questions (FAQ)

Q: Can the N3428-6002RB directly replace the CWN-651-20-0000 in existing designs?

A: Direct replacement is possible where the application tolerates the documented parameter differences. The higher operating temperature limit of the CWN-651-20-0000 (-55°C to 125°C vs. -55°C to 105°C) must be considered for thermal applications. Contact geometry and fastening mechanism differences require verification against mating connector specifications.

Q: What are the key differences affecting substitution?

A: Operating temperature range, current rating, contact post length, contact finish thickness, fastening type, and contact shape differ between the two parts. These parameters must be evaluated against specific application requirements before substitution.

Q: Are both parts compliant with industry standards?

A: Both parts are ROHS3 compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity classification. Both are suitable for regulated assembly environments.

Q: How do the contact materials differ?

A: The CWN-651-20-0000 uses phosphor bronze contacts with nickel post plating, while the N3428-6002RB uses copper alloy contacts with tin post plating. Both feature gold-plated mating surfaces. Material selection affects contact resistance, durability, and solderability characteristics.

Q: What is the significance of the post length difference?

A: The CWN-651-20-0000 has 0.090" post length versus 0.112" for the N3428-6002RB. This 0.022" difference affects PCB hole depth requirements, solder joint formation, and overall assembly geometry. PCB design must accommodate the selected part's post length specification.

Q: Which part is better for high-cycle mating applications?

A: The N3428-6002RB provides superior durability for high-cycle applications due to thicker contact plating (200.0µin post finish vs. 50.0µin) and higher current rating (1.75A vs. 1A). The CWN-651-20-0000 is suitable for standard-cycle applications with lower mating frequency requirements.