CWN-502-34-0021 Equivalent & Substitute Parts

Part Overview

The CWN-502-34-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole, right-angle mounting applications. This 34-position connector operates at 0.100" (2.54mm) pitch with shrouded 4-wall construction and solder termination. The part is Active status and widely used in board-to-cable/wire interconnect applications requiring reliable male pin connections with gold-plated mating contacts.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct functional replacement in compatible applications.

Substiute Parts

CWN-502-34-0021

CW IndustriesIn Stock: 1175CWN-502-34-0021 Datasheet

Current PartRFQ

09185405324

HARTINGIn Stock: 124709185405324 Datasheet

SimilarRFQ

N3431-5002RB

3MIn Stock: 832N3431-5002RB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CWN-502-34-0021 are evaluated based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Connector Type: Header
• Contact Type: Male Pin
• Pitch - Mating: 0.100" (2.54mm)
• Row Spacing - Mating: 0.100" (2.54mm)
• Shrouding: Shrouded - 4 Wall
• Termination: Solder
• Contact Finish - Mating: Gold
• Operating Temperature Range: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Identified Substitutes:

09185405324 (HARTING SEK Series) - Partial compatibility. Matches pitch, shrouding, termination, contact finish, operating temperature, flammability, and RoHS compliance. Differs in position count (40 vs. 34), mounting orientation (vertical vs. right angle), and contact shape (square vs. circular). Suitable only for applications where 40-position vertical mounting is acceptable.

N3431-5002RB (3M 3000 Series) - Full compatibility. Matches all critical parameters including 34 positions, 2 rows, right-angle mounting, shrouded 4-wall construction, solder termination, gold mating contact finish, operating temperature range, flammability rating, and RoHS compliance. Direct functional equivalent with identical mechanical and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

N3431-5002RB (3M 3000 Series) is the primary equivalent substitute for CWN-502-34-0021. Both parts are Active status, ROHS3 compliant, and share identical critical specifications: 34 positions, 2 rows, 0.100" pitch, right-angle through-hole mounting, shrouded 4-wall construction, solder termination, and gold mating contact finish. The 3M part operates across -55°C to 105°C, which covers the lower end of the CW Industries operating range. Current rating of 1.75A on the 3M part exceeds the 1A specification of the main part. Both parts carry UL94 V-0 flammability certification and are RoHS3 compliant.

09185405324 (HARTING SEK Series) is a partial substitute suitable only for applications where design flexibility permits 40-position vertical mounting instead of 34-position right-angle configuration. While this part matches pitch, shrouding, termination, contact finish, operating temperature, and compliance certifications, the position count and mounting orientation differences preclude direct replacement in applications requiring the exact 34-position right-angle form factor.

Selection should prioritize N3431-5002RB for direct functional replacement. The HARTING part should be considered only when application requirements accommodate the increased position count and vertical mounting orientation.

Frequently Asked Questions (FAQ)

Q: Can N3431-5002RB directly replace CWN-502-34-0021 in all applications?

A: Yes. Both parts are 34-position, 2-row headers with 0.100" pitch, right-angle through-hole mounting, shrouded 4-wall construction, solder termination, and gold mating contacts. Operating temperature range, flammability rating, and RoHS compliance are equivalent or superior on the 3M part. Direct substitution is functionally compatible.

Q: Why is 09185405324 listed as a substitute if it has 40 positions instead of 34?

A: The HARTING part shares the same pitch, shrouding, termination, contact finish, operating temperature, and compliance certifications as the main part. However, the 40-position count and vertical mounting orientation represent design differences. This part is a substitute only for applications where these differences are acceptable and do not conflict with board layout or connector interface requirements.

Q: What is the significance of the 0.100" (2.54mm) pitch specification?

A: Pitch defines the center-to-center spacing between adjacent contacts. The 0.100" pitch is a standard spacing for rectangular connectors in this category. All listed parts share this pitch, ensuring compatibility with mating connectors and PCB footprints designed for 0.100" spacing.

Q: Are there differences in contact material between the main part and substitutes?

A: Yes. CWN-502-34-0021 uses Phosphor Bronze contacts, while 09185405324 uses Copper Alloy and N3431-5002RB uses Copper Alloy. All three materials are suitable for the specified applications and current ratings. Contact finish (gold on mating surfaces) is consistent across all parts.

Q: What does "Shrouded - 4 Wall" mean?

A: Shrouding refers to the insulation housing surrounding the contacts. "4 Wall" indicates that four sides of the connector body are enclosed by insulation material, providing mechanical protection and guiding proper mating alignment. All listed parts include this feature.

Q: How do operating temperature ranges compare?

A: CWN-502-34-0021 operates from -55°C to 125°C. N3431-5002RB operates from -55°C to 105°C, covering the lower portion of the main part's range. 09185405324 also operates from -55°C to 125°C. Selection should account for application temperature requirements.

Q: What is RoHS3 compliance?

A: RoHS3 (Restriction of Hazardous Substances Directive 3) is a European Union regulation limiting the use of specific hazardous materials in electrical and electronic equipment. All listed parts are ROHS3 compliant, meeting this regulatory requirement.

Q: Can I use these parts interchangeably in existing designs?

A: N3431-5002RB is a direct mechanical and electrical equivalent and can be used interchangeably. 09185405324 requires design review due to position count and mounting orientation differences. PCB footprint, connector interface, and application requirements must be evaluated before substitution.