CWN-502-16-0021 Equivalent & Substitute Parts

Part Overview

The CWN-502-16-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole, right-angle mounting applications. This shrouded 16-position connector with 2.54mm pitch serves board-to-cable/wire interconnection requirements. The part is currently active in production with 1033 units in stock. Substitute parts are identified to address inventory availability, lead time considerations, or specific application requirements where electrical and mechanical parameters align with the original specification.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	16
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature Range	-55°C ~ 125°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-502-16-0021 is determined by the following critical parameters:

Connector Type & Contact Configuration: Header with male pins
Position Count & Row Configuration: 16 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole, right-angle, solder termination
Shrouding: Shrouded 4-wall design
Electrical Performance: Current rating and operating temperature range
Compliance: RoHS and REACH status

The substitute part N3408-5002RB from 3M meets the core functional requirements of connector type, position count, pitch, mounting style, and shrouding. Both parts are active products with RoHS compliance and REACH unaffected status, making them interchangeable for applications where the specified parameters align.

Parameter Comparison

Parameter	CWN-502-16-0021 (CW Industries)	N3408-5002RB (3M)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	16	16
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	1.75A
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C
RoHS Status	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both the CWN-502-16-0021 and N3408-5002RB are active products with equivalent RoHS and REACH compliance status. The primary differences are:

Operating Temperature: The CWN-502-16-0021 supports -55°C to 125°C, while the N3408-5002RB supports -55°C to 105°C. Applications requiring operation above 105°C must use the CW Industries part.
Current Rating: The N3408-5002RB provides 1.75A versus 1A for the CWN-502-16-0021. Applications requiring higher current capacity may benefit from the 3M substitute.
Contact Post Material & Finish: The CWN-502-16-0021 uses nickel-plated phosphor bronze posts, while the N3408-5002RB uses tin-plated copper alloy posts. Material selection depends on specific corrosion and solderability requirements.

Selection should be based on the application's temperature range, current requirements, and environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can N3408-5002RB replace CWN-502-16-0021 in all applications?

A: Substitution is valid when the application operates within -55°C to 105°C and does not exceed 1A current draw. Applications requiring higher temperatures or current must use the original CWN-502-16-0021.

Q: What are the key compatibility factors between these parts?

A: Both connectors share identical pitch (2.54mm), position count (16), row configuration (2 rows), mounting style (through-hole right-angle), and shrouding (4-wall). Mating contact length and gold plating thickness are also identical, ensuring mechanical and electrical compatibility.

Q: Are there packaging differences between these parts?

A: The CWN-502-16-0021 is supplied in standard packaging, while the N3408-5002RB is supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant and REACH unaffected. The CWN-502-16-0021 is ROHS3 compliant, while the N3408-5002RB is RoHS compliant. Both meet UL94 V-0 flammability requirements and have MSL 1 (unlimited) moisture sensitivity ratings.

Q: What is the difference in contact post specifications?

A: The CWN-502-16-0021 uses 0.090" (2.29mm) nickel-plated phosphor bronze posts with 50.0µin (1.27µm) finish thickness. The N3408-5002RB uses 0.112" (2.84mm) tin-plated copper alloy posts with 200.0µin (5.08µm) finish thickness. Post length and material differences may affect soldering characteristics and long-term reliability in specific environments.

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