CWN-452-50-0021 Equivalent & Substitute Parts

Part Overview

The CWN-452-50-0021 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 provides board-to-cable/wire connectivity with shrouded 4-wall construction and solder termination. The part is currently active in production with 654 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part becomes unavailable or when alternative sourcing is required.

Key Parameters

Parameter	CWN-452-50-0021
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	-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-452-50-0021 is determined by strict alignment of the following critical parameters:

Connector Type & Contact Configuration: Header with male pin contacts
Position Count & Row Configuration: 50 positions arranged in 2 rows
Pitch Specifications: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole mounting with solder termination
Shrouding Design: Shrouded 4-wall construction
Environmental Compliance: UL94 V-0 flammability rating and RoHS3 compliance
Moisture Sensitivity: MSL 1 (Unlimited)

The identified substitute parts—09185506924 (HARTING), 71918-050LF (Amphenol ICC/FCI), D3433-6002-AR (3M), N3433-6002RB (3M), and N3433-6003RB (3M)—meet these core criteria. Variations in contact material, contact finish thickness, fastening mechanism, and insulation material do not preclude substitution when the primary electrical and mechanical interface parameters remain equivalent.

Parameter Comparison

Parameter	CWN-452-50-0021	09185506924	71918-050LF	D3433-6002-AR	N3433-6002RB	N3433-6003RB
Manufacturer	CW Industries	HARTING	Amphenol ICC (FCI)	3M	3M	3M
Series	CWN	SEK	Quickie™	D3000	3000	3000
Connector Type	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	50	50	50	50	50	50
Number of Rows	2	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)	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)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Product Status	Active	Active	Active	Active	Active	Active
Current Rating (Amps)	1A	Not specified	Not specified	1.75A	1.75A	1.75A
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with RoHS directives. The CWN-452-50-0021, 09185506924, and 71918-050LF are ROHS3 compliant, while D3433-6002-AR, N3433-6002RB, and N3433-6003RB are RoHS compliant. All parts carry UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating.

The 3M parts (D3433-6002-AR, N3433-6002RB, N3433-6003RB) provide higher current ratings of 1.75A compared to the original 1A specification. The D3433-6002-AR, N3433-6002RB, and N3433-6003RB operate within a reduced temperature range of -55°C to 105°C, compared to the original -55°C to 125°C. The 71918-050LF (Amphenol ICC/FCI) does not specify operating temperature or current rating in the provided data.

Selection among substitutes should account for application-specific requirements regarding current capacity and operating temperature envelope. All parts are suitable for board-to-cable/wire connectivity with equivalent mechanical interface characteristics.

Frequently Asked Questions (FAQ)

Q: What makes these parts electrically equivalent to the CWN-452-50-0021?

A: All substitute parts share identical connector type (header), contact configuration (male pin), position count (50), row arrangement (2 rows), mating pitch (0.100"/2.54mm), row spacing (0.100"/2.54mm), mounting method (through-hole), termination type (solder), and shrouding design (4-wall). These parameters define the electrical and mechanical interface.

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

A: Yes. The CWN-452-50-0021 uses phosphor bronze contacts with gold mating finish (30.0µin) and nickel post finish (50.0µin). Substitutes employ copper alloy or brass contacts with varying gold and tin finishes. These material and finish variations do not affect substitution eligibility when core interface parameters remain constant.

Q: What is the significance of the different fastening types listed?

A: The CWN-452-50-0021 uses latch lock/eject hooks (long), while most substitutes employ push-pull fastening. The HARTING 09185506924 also uses push-pull. Fastening mechanism differences do not preclude substitution as they relate to connector mating procedure rather than electrical or primary mechanical interface.

Q: Do the 3M parts operate at the same temperature range as the original?

A: No. The CWN-452-50-0021 operates from -55°C to 125°C, while the 3M substitutes (D3433-6002-AR, N3433-6002RB, N3433-6003RB) operate from -55°C to 105°C. Applications requiring operation above 105°C should not use 3M substitutes. The HARTING 09185506924 matches the original -55°C to 125°C range.

Q: What is the difference between N3433-6002RB and N3433-6003RB?

A: Both are 3M 3000 series parts with identical electrical and mechanical specifications. The primary difference is contact length post: N3433-6002RB has 0.112" (2.84mm) while N3433-6003RB has 0.155" (3.94mm). Selection depends on PCB thickness and application requirements.

Q: Are all substitutes available in the same packaging as the original?

A: No. The CWN-452-50-0021 is supplied in bulk packaging. The 09185506924 (HARTING) and N3433-6002RB and N3433-6003RB (3M) are bulk packaged. The 71918-050LF (Amphenol ICC/FCI) is supplied in tube packaging, and D3433-6002-AR (3M) is supplied in tray packaging. Packaging differences may affect procurement and handling procedures.

Q: Can I use a substitute with higher current rating in place of the original?

A: The 3M substitutes (D3433-6002-AR, N3433-6002RB, N3433-6003RB) are rated for 1.75A versus the original 1A. Higher current rating does not prevent substitution; the connector can safely handle the original design current. Application design must remain within the original 1A specification unless the circuit is redesigned for higher current operation.

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