CWN-350-50-0021 Equivalent & Substitute Parts

Part Overview

The CWN-350-50-0021 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 902 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in applications where form factor and performance characteristics match.

Key Parameters

Parameter	Value
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
Fastening Type	Push-Pull
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-350-50-0021 are qualified based on the following critical parameters that must align with the main part:

Connector Type & Contact Configuration: Header with male pins
Position Count & Row Configuration: 50 positions in 2 rows
Pitch Specifications: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole solder termination
Shrouding Design: Shrouded 4-wall construction
Fastening Mechanism: Push-pull fastening type
Environmental Compliance: UL94 V-0 flammability rating, RoHS3 compliance, MSL 1

The following parts meet these substitution criteria:

HARTING 09185506924 (SEK series)
Amphenol ICC (FCI) 71918-050LF (Quickie™ series)
3M D3433-6002-AR (D3000 series)
3M N3433-6002RB (3000 series)
3M N3433-6003RB (3000 series)

Parameter Comparison

Parameter	CWN-350-50-0021	09185506924	71918-050LF	D3433-6002-AR	N3433-6002RB	N3433-6003RB
Manufacturer	CW Industries	HARTING	Amphenol ICC (FCI)	3M	3M	3M
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.240" (6.10mm)	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)	0.114" (2.90mm)	0.112" (2.84mm)	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)	0.680" (17.27mm)
Contact Shape	Circular	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold, GXT™	Gold	Gold	Gold
Contact Finish - Post	Nickel	Tin	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Brass	Copper Alloy	Copper Alloy
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-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	UL94 V-0
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)
Current Rating	1A	Not specified	Not specified	1.75A	1.75A	1.75A
Packaging	Bulk	Bulk	Tube	Tray	Bulk	Bulk
Inventory Availability	902 Pcs	1099 Pcs	1555 Pcs	1244 Pcs	1315 Pcs	1119 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain active product status and comply with UL94 V-0 flammability requirements and MSL 1 moisture sensitivity specifications. Selection between the CWN-350-50-0021 and substitute parts depends on specific application constraints:

CWN-350-50-0021 (CW Industries): Supports operating temperatures to 125°C with 1A current rating. Circular contact geometry with nickel post finish. ROHS3 compliant. Suitable for applications requiring maximum temperature performance.

09185506924 (HARTING SEK series): Matches operating temperature range to 125°C. Square contact geometry with tin post finish. ROHS3 compliant. Equivalent thermal performance to main part.

71918-050LF (Amphenol ICC Quickie™ series): Tube packaging. Square contact geometry with tin post finish. RoHS compliant. Operating temperature not specified. Highest inventory availability (1555 units).

D3433-6002-AR (3M D3000 series): Operating temperature limited to 105°C. 1.75A current rating. Tray packaging. ROHS3 compliant. Higher current capacity than main part.

N3433-6002RB (3M 3000 series): Operating temperature limited to 105°C. 1.75A current rating. Bulk packaging. RoHS compliant. Standard post length (0.112").

N3433-6003RB (3M 3000 series): Operating temperature limited to 105°C. 1.75A current rating. Bulk packaging. RoHS compliant. Extended post length (0.155") for applications requiring deeper PCB penetration.

Frequently Asked Questions (FAQ)

Q: Can CWN-350-50-0021 be directly replaced with any of the listed substitutes?

A: Direct replacement is possible when the application does not require the specific operating temperature range or contact finish of the original part. The CWN-350-50-0021 operates to 125°C; the 3M parts (D3433-6002-AR, N3433-6002RB, N3433-6003RB) are rated to 105°C. HARTING 09185506924 matches the 125°C rating. Verify application temperature requirements before substitution.

Q: What is the difference between contact post lengths across these parts?

A: Post length affects PCB penetration depth. CWN-350-50-0021 has 0.090" (2.29mm) posts. HARTING and Amphenol parts have 0.114" (2.90mm) posts. 3M N3433-6002RB has 0.112" (2.84mm) posts. 3M N3433-6003RB has extended 0.155" (3.94mm) posts. Select based on PCB thickness and solder joint requirements.

Q: Are there differences in contact material between these parts?

A: Yes. CWN-350-50-0021 uses phosphor bronze contacts. HARTING and 3M N-series use copper alloy. 3M D3433-6002-AR uses brass. Amphenol uses phosphor bronze. Contact material affects electrical conductivity and mechanical durability. All materials are suitable for standard interconnection applications.

Q: What is the significance of contact finish differences?

A: CWN-350-50-0021 has nickel post finish; all substitutes have tin post finish. Mating surfaces are gold-plated across all parts. Tin post finish is standard for solder termination and provides equivalent reliability for through-hole applications.

Q: How do packaging options affect part selection?

A: CWN-350-50-0021 and HARTING 09185506924 are supplied in bulk. Amphenol 71918-050LF is supplied in tubes. 3M D3433-6002-AR is supplied in trays. Packaging affects handling, storage, and assembly line integration. Select based on manufacturing process requirements.

Q: Are all parts RoHS compliant?

A: CWN-350-50-0021, HARTING 09185506924, and 3M D3433-6002-AR are ROHS3 compliant. Amphenol 71918-050LF, 3M N3433-6002RB, and 3M N3433-6003RB are RoHS compliant. Both compliance levels meet current regulatory requirements.

Q: What is the current rating difference between parts?

A: CWN-350-50-0021 is rated for 1A. 3M parts (D3433-6002-AR, N3433-6002RB, N3433-6003RB) are rated for 1.75A. HARTING and Amphenol current ratings are not specified. For applications requiring higher current capacity, 3M parts provide additional margin.

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