CWN-351-50-0021 Equivalent & Substitute Parts

Part Overview

The CWN-351-50-0021 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 is classified as an active product with full inventory availability. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in board-to-cable/wire applications while maintaining design integrity and performance requirements.

Key Parameters

Parameter	CWN-351-50-0021 Specification
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
Style	Board to Cable/Wire
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

Substitution eligibility is determined by strict alignment of the following critical parameters:

Connector geometry: 50 positions, 2 rows, 0.100" (2.54mm) mating pitch, 0.100" (2.54mm) row spacing
Mounting and termination: Through-hole solder termination
Shrouding configuration: Shrouded 4-wall design with keying slot
Contact type: Male pin configuration
Electrical compliance: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1 rating
Operating environment: -55°C ~ 125°C temperature range capability

All identified substitute parts meet these core requirements. Variations in contact material, contact finish specifications, fastening mechanism (latch lock versus push-pull), insulation material composition, and post length do not preclude functional substitution when the above parameters align.

Parameter Comparison

Parameter	CWN-351-50-0021	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
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
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Shape	Circular	Square	Square	Square	Square	Square
Contact Material	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Brass	Copper Alloy	Copper Alloy
Contact Finish - Mating	Gold	Gold	Gold, GXT™	Gold	Gold	Gold
Contact Finish - Post	Nickel	Tin	Tin	Tin	Tin	Tin
Insulation Material	Thermoplastic	Polybutylene Terephthalate (PBT), Glass Filled	Thermoplastic, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating (Amps)	1A	Not specified	Not specified	1.75A	1.75A	1.75A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with ROHS3 or RoHS certification requirements. The CWN-351-50-0021 operates across -55°C to 125°C with 1A current rating. Substitute parts from 3M (D3433-6002-AR, N3433-6002RB, N3433-6003RB) support higher current ratings (1.75A) but operate within a narrower temperature range (-55°C to 105°C). The HARTING 09185506924 and Amphenol ICC 71918-050LF maintain the full -55°C to 125°C operating range, with the latter offering GXT™ gold contact finish technology.

Selection should prioritize application-specific requirements: thermal environment constraints, current load demands, and packaging format availability. All parts satisfy core geometric and electrical compatibility criteria for direct substitution in board-to-cable/wire connector applications.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the CWN-351-50-0021?

A: Substitution requires matching connector geometry (50 positions, 2 rows, 0.100" pitch), through-hole solder termination, shrouded 4-wall configuration, male pin contact type, and UL94 V-0 flammability compliance. All listed parts meet these criteria.

Q: Can I use a substitute part with a lower operating temperature range?

A: The 3M parts (D3433-6002-AR, N3433-6002RB, N3433-6003RB) operate to 105°C maximum, compared to the CWN-351-50-0021 specification of 125°C. Substitution is valid only if your application does not require operation above 105°C.

Q: What is the difference between contact shapes in the substitute parts?

A: The CWN-351-50-0021 features circular male pins, while substitute parts use square contact geometry. Both configurations are mechanically and electrically compatible within the 0.100" (2.54mm) pitch standard.

Q: Do packaging differences affect substitution eligibility?

A: Packaging format (bulk, tube, tray) does not affect electrical or mechanical compatibility. Selection should align with assembly process requirements and inventory management practices.

Q: Why do some substitute parts specify higher current ratings?

A: The 3M series parts are rated for 1.75A versus the 1A rating of the CWN-351-50-0021. Higher current capability does not preclude substitution; applications requiring only 1A operation remain fully compatible.

Q: Are all substitute parts ROHS3 compliant?

A: The CWN-351-50-0021, HARTING 09185506924, and 3M D3433-6002-AR are ROHS3 compliant. The Amphenol ICC 71918-050LF and 3M N3433-6002RB and N3433-6003RB carry RoHS compliance certification. Both compliance levels satisfy regulatory requirements for equivalent substitution.

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