CWN-552-16-0021 Equivalent & Substitute Parts

Part Overview

The CWN-552-16-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This 16-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 853 units in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where mechanical or electrical parameter variations are acceptable within system specifications.

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
Termination	Solder
Shrouding	Shrouded - 4 Wall
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	1A
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-552-16-0021 is determined by strict alignment of the following critical parameters:

Connector Type & Contact Configuration: Header with male pins, 16 positions, 2 rows
Pitch Specifications: Mating pitch and row spacing both 0.100" (2.54mm)
Mounting & Termination: Through-hole solder termination
Shrouding: Shrouded 4-wall construction
Environmental Compliance: UL94 V-0 flammability rating, RoHS compliance, MSL 1

All identified substitute parts meet these core criteria. Variations in contact material, contact finish specifications, fastening type (Push-Pull vs. Latch Lock), insulation material composition, and contact length parameters are within acceptable tolerance ranges for equivalent functionality in standard PCB header applications.

Parameter Comparison

Parameter	CWN-552-16-0021 (CW Industries)	71918-016LF (Amphenol ICC)	D3408-6002-AR (3M)	N3408-6002RB (3M)	N3408-6003RB (3M)
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	16	16	16	16	16
Number of Rows	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Long	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.090" (2.29mm)	0.114" (2.90mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.155" (3.94mm)
Insulation Height	0.681" (17.30mm)	0.685" (17.40mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)
Contact Shape	Circular	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold, GXT™	Gold	Gold	Gold
Contact Finish - Post	Nickel	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze	Brass	Copper Alloy	Copper Alloy
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	1A	Not specified	1.75A	1.75A	1.75A
Operating Temperature	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	853 Pcs In Stock	882 Pcs In Stock	6514 Pcs In Stock	773 Pcs In Stock	977 Pcs In Stock

Engineering Selection Recommendations

CWN-552-16-0021 (Primary Part): Select when latch lock fastening with long eject hooks is required. Offers ROHS3 compliance, nickel post finish, and phosphor bronze contacts. Operating temperature range extends to 125°C. Suitable for applications requiring positive mechanical retention.

71918-016LF (Amphenol ICC Quickie™ Series): Select for push-pull fastening applications. Offers GXT™ gold mating finish and glass-filled thermoplastic insulation. Provides alternative fastening mechanism with reduced insertion/extraction force. RoHS compliant. Inventory availability at 882 units supports immediate procurement.

D3408-6002-AR (3M D3000 Series): Select for applications requiring higher current capacity (1.75A vs. 1A). ROHS3 compliant with brass contact material. Includes mounting flange feature. Largest inventory availability (6514 units) supports high-volume applications. Operating temperature limited to 105°C.

N3408-6002RB (3M 3000 Series): Select for push-pull fastening with standard post length (0.112"). Copper alloy contacts with 1.75A current rating. RoHS compliant. Mounting flange included. Suitable for board-to-board or cable applications.

N3408-6003RB (3M 3000 Series): Select for applications requiring extended post length (0.155" vs. 0.090" on primary part). Copper alloy contacts with 1.75A current rating. RoHS compliant. Mounting flange included. Accommodates thicker PCB assemblies or applications with specific stacking height requirements.

All substitute parts maintain core electrical and mechanical compatibility through matched pitch, position count, shrouding, and flammability ratings. Selection should be based on fastening type preference, current capacity requirements, operating temperature limits, and post length specifications for PCB thickness accommodation.

Frequently Asked Questions (FAQ)

Q: Can the CWN-552-16-0021 be directly replaced with the 71918-016LF?

A: Direct mechanical and electrical substitution is supported. Both connectors share identical pitch (0.100"), position count (16), row configuration (2 rows), shrouding (4-wall), and flammability rating (UL94 V-0). Primary difference is fastening type: CWN-552-16-0021 uses latch lock with long eject hooks, while 71918-016LF uses push-pull. Contact shape differs (circular vs. square), but this does not affect mating compatibility. Verify fastening mechanism compatibility with mating connector design.

Q: What is the difference between the 3M substitute parts (D3408-6002-AR, N3408-6002RB, N3408-6003RB)?

A: All three 3M parts share identical pitch, position count, row spacing, and shrouding. Key differences are: D3408-6002-AR uses brass contacts with 10.0µin gold finish thickness; N3408-6002RB and N3408-6003RB use copper alloy contacts with 30.0µin gold finish thickness. N3408-6003RB has extended post length (0.155") compared to N3408-6002RB (0.112"), accommodating thicker PCB assemblies. All three support 1.75A current rating versus 1A on the primary part.

Q: Are there operating temperature limitations when substituting parts?

A: The primary CWN-552-16-0021 operates from -55°C to 125°C. The 3M substitute parts (D3408-6002-AR, N3408-6002RB, N3408-6003RB) are rated to -55°C to 105°C. The Amphenol ICC 71918-016LF does not specify operating temperature. For applications requiring operation above 105°C, the primary CWN-552-16-0021 is required.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. The primary part CWN-552-16-0021 is ROHS3 compliant. Substitute parts meet RoHS compliance: 71918-016LF is RoHS compliant, D3408-6002-AR is ROHS3 compliant, N3408-6002RB and N3408-6003RB are RoHS compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What packaging options are available for these parts?

A: CWN-552-16-0021 is supplied in standard packaging (not specified). 71918-016LF is supplied in tube packaging. D3408-6002-AR is supplied in tray packaging. N3408-6002RB and N3408-6003RB are supplied in bulk packaging. Packaging selection may affect procurement lead times and handling requirements for high-volume applications.

Q: Can the CWN-552-16-0021 be used in board-to-board applications?

A: The primary part CWN-552-16-0021 is specified for board-to-cable/wire style applications. The 3M substitute parts (N3408-6002RB and N3408-6003RB) are explicitly rated for board-to-board or cable applications, providing flexibility for both connection types. Verify mating connector compatibility for board-to-board configurations.

Q: What is the significance of contact post length differences?

A: Contact post length determines solder joint depth and accommodation for PCB thickness. The primary CWN-552-16-0021 has 0.090" post length. Substitute parts range from 0.112" to 0.155". Longer post lengths accommodate thicker PCB assemblies and provide greater solder joint volume. Selection should align with PCB thickness and soldering process specifications.

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