CWN-552-50-0021 Equivalent & Substitute Parts

Part Overview

The CWN-552-50-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole mounting applications. This 50-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 797 units in stock. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options when the primary part is unavailable or when specific application requirements necessitate alternative connector specifications.

Key Parameters

Parameter	CWN-552-50-0021
Connector Type	Header
Contact Type	Male Pin
Number of Positions	50
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 Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CWN-552-50-0021 are qualified based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 50
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
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Factors:

Operating Temperature Range: -55°C ~ 125°C (main part specification)
Contact Finish - Mating: Gold
Insulation Material: Thermoplastic or equivalent glass-filled polymer
Features: Keying Slot

All four substitute parts (09185506924, 71918-050LF, N3433-6002RB, N3433-6003RB) meet these primary matching criteria and are therefore electrically and mechanically compatible with the CWN-552-50-0021 for standard board-to-cable/wire interconnection applications.

Parameter Comparison

Parameter	CWN-552-50-0021 (CW Industries)	09185506924 (HARTING)	71918-050LF (Amphenol ICC)	N3433-6002RB (3M)	N3433-6003RB (3M)
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	50	50	50	50	50
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
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.090" (2.29mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.112" (2.84mm)	0.155" (3.94mm)
Insulation Height	0.681" (17.30mm)	0.681" (17.30mm)	0.685" (17.40mm)	0.680" (17.27mm)	0.680" (17.27mm)
Contact Shape	Circular	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold, GXT™	Gold	Gold
Contact Finish - Post	Nickel	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Copper Alloy	Copper Alloy
Insulation Material	Thermoplastic	Polybutylene Terephthalate (PBT), Glass Filled	Thermoplastic, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	Not specified	Not specified	1.75A	1.75A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Not specified	Bulk	Tube	Bulk	Bulk
Inventory Availability	797 Pcs	1099 Pcs	1555 Pcs	1315 Pcs	1119 Pcs

Engineering Selection Recommendations

All four substitute parts are qualified alternatives to the CWN-552-50-0021 based on matching primary electrical and mechanical parameters. Selection among substitutes should be based on the following factors:

09185506924 (HARTING SEK Series): Maintains identical mating contact length (0.240") and insulation height (0.681") to the main part. Offers ROHS3 compliance and operates across the full -55°C ~ 125°C temperature range. Suitable for applications requiring exact dimensional compatibility with the CWN-552-50-0021.

71918-050LF (Amphenol ICC Quickie™ Series): Provides the highest inventory availability (1555 units) and features enhanced gold contact finish (GXT™). Tube packaging offers alternative handling and storage options. Suitable for high-volume procurement scenarios where supply assurance is critical.

N3433-6002RB (3M 3000 Series): Delivers higher current rating (1.75A versus 1A) and maintains identical mating contact length (0.240"). Operates within -55°C ~ 105°C range. Suitable for applications requiring increased current capacity within the specified temperature envelope.

N3433-6003RB (3M 3000 Series): Provides the longest post contact length (0.155") among all substitutes, enabling deeper PCB penetration for enhanced mechanical retention. Delivers 1.75A current rating. Suitable for applications requiring extended post engagement or higher current handling.

All substitute parts maintain UL94 V-0 flammability rating, MSL 1 moisture sensitivity level, and RoHS compliance, ensuring regulatory and environmental conformance equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts directly interchangeable with the CWN-552-50-0021?

A: All four substitute parts share the critical parameters that determine functional compatibility: 50-position, 2-row configuration with 0.100" (2.54mm) pitch, through-hole solder termination, and shrouded 4-wall design. Mechanical and electrical interchangeability is established for standard board-to-cable/wire interconnection applications. Minor variations in contact post length and insulation material composition do not affect standard mating performance.

Q: What are the key differences between substitute parts?

A: Contact post length varies across substitutes (0.090" to 0.155"), affecting PCB penetration depth. Current ratings differ (1A for CWN-552-50-0021 and 71918-050LF versus 1.75A for 3M parts). Operating temperature ranges differ slightly (N3433 series rated to 105°C versus 125°C for CWN-552 and HARTING). Contact shape varies (circular for CWN-552 versus square for all substitutes). Insulation materials differ (thermoplastic versus glass-filled polymers).

Q: Which substitute offers the best supply availability?

A: The 71918-050LF (Amphenol ICC) currently has the highest inventory level at 1555 units in stock, followed by N3433-6002RB (1315 units) and 09185506924 (1099 units).

Q: Can I use N3433-6003RB if my PCB design was originally specified for CWN-552-50-0021?

A: The N3433-6003RB features a longer post contact length (0.155" versus 0.090" for the main part). This difference requires PCB design verification to ensure adequate through-hole depth and solder fillet formation. Consult PCB layout specifications before substitution.

Q: Are all substitutes RoHS compliant?

A: Yes. The CWN-552-50-0021 is ROHS3 compliant. All four substitutes are RoHS compliant, meeting environmental and regulatory requirements for lead-free component usage.

Q: What is the difference between bulk and tube packaging?

A: Bulk packaging (09185506924, N3433-6002RB, N3433-6003RB) provides cost-effective procurement for large quantities. Tube packaging (71918-050LF) offers organized component presentation and handling convenience for smaller order quantities or manual assembly operations.

Q: Do all substitutes maintain the same operating temperature range?

A: No. The CWN-552-50-0021 and 09185506924 operate across -55°C ~ 125°C. The 71918-050LF does not specify an operating temperature range. The 3M parts (N3433-6002RB and N3433-6003RB) operate across -55°C ~ 105°C. Applications requiring operation above 105°C should use the CWN-552-50-0021 or 09185506924.

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