CWN-651-50-0000 Equivalent & Substitute Parts

Part Overview

The CWN-651-50-0000 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 configured for board-to-cable/wire connections using solder termination. The part is currently active in production with 755 units in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative mechanical or electrical characteristics better suit specific application requirements.

Key Parameters

Parameter	CWN-651-50-0000
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CWN-651-50-0000 are qualified based on the following critical parameters that must match or be compatible with the main part:

Connector Type & Contact Configuration: Header with male pins
Position Count & Row Configuration: 50 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole solder termination
Shrouding: 4-wall shrouded design
Compliance & Safety: UL94 V-0 flammability rating, RoHS compliance, MSL 1

The four substitute parts identified—09185506924 (HARTING), 71918-050LF (Amphenol ICC/FCI), N3433-6002RB (3M), and N3433-6003RB (3M)—meet these core substitution criteria. Variations in contact shape (circular vs. square), contact finish thickness, insulation material composition, and fastening mechanism (latch lock vs. push-pull) represent acceptable engineering trade-offs within the rectangular connector category while maintaining functional compatibility for standard board-to-cable/wire applications.

Parameter Comparison

Parameter	CWN-651-50-0000	09185506924	71918-050LF	N3433-6002RB	N3433-6003RB
Manufacturer	CW Industries	HARTING	Amphenol ICC (FCI)	3M	3M
Series	CWN	SEK	Quickie™	3000	3000
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 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	-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
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)
Current Rating (Amps)	1A	Not specified	Not specified	1.75A	1.75A
Fastening Type	Latch Lock/Eject Hooks, Short	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Insulation Height	0.681" (17.30mm)	0.681" (17.30mm)	0.685" (17.40mm)	0.680" (17.27mm)	0.680" (17.27mm)
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)
Packaging	Not specified	Bulk	Tube	Bulk	Bulk
Inventory Status	755 Pcs New Original In Stock	1099 Pcs New Original In Stock	1555 Pcs New Original In Stock	1315 Pcs New Original In Stock	1119 Pcs New Original In Stock

Engineering Selection Recommendations

All five parts maintain active product status and meet UL94 V-0 flammability requirements with MSL 1 moisture sensitivity classification. The primary distinction between the CWN-651-50-0000 and its substitutes lies in operating temperature range and contact post finish specifications.

The CWN-651-50-0000 and HARTING 09185506924 both support the full -55°C to 125°C operating range. The 3M parts (N3433-6002RB and N3433-6003RB) operate within -55°C to 105°C, which is acceptable for applications not requiring the extended upper temperature limit. The Amphenol ICC 71918-050LF does not specify an operating temperature range.

Contact post length varies across substitutes: the CWN-651-50-0000 features 0.090" (2.29mm) posts, while HARTING and Amphenol ICC provide 0.114" (2.90mm), and the 3M N3433-6002RB provides 0.112" (2.84mm). The 3M N3433-6003RB offers extended 0.155" (3.94mm) posts for applications requiring deeper board penetration. These variations affect PCB design and assembly considerations.

Current rating specifications differ: the CWN-651-50-0000 is rated at 1A, while the 3M substitutes provide 1.75A capacity. The HARTING and Amphenol ICC parts do not specify current ratings. All parts comply with RoHS requirements and maintain equivalent electrical safety certifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the CWN-651-50-0000 with any of these parts without PCB redesign?

A: Substitution is mechanically feasible due to matching pitch (0.100"), position count (50), row configuration (2), and shrouding (4-wall). However, variations in contact post length (0.090" to 0.155") may require PCB hole depth adjustment. The fastening mechanism differs (latch lock vs. push-pull), which affects mating force and connector retention characteristics. Electrical performance remains compatible across all substitutes for standard applications.

Q: What is the difference between the two 3M parts, N3433-6002RB and N3433-6003RB?

A: Both 3M parts are from the 3000 series with identical electrical and mechanical specifications except for contact post length. The N3433-6002RB provides 0.112" (2.84mm) posts, while the N3433-6003RB provides extended 0.155" (3.94mm) posts. Selection depends on PCB thickness and required solder joint depth. Both support 1.75A current rating and -55°C to 105°C operating temperature.

Q: Does the contact shape difference (circular vs. square) affect compatibility?

A: Contact shape is a design variation within the rectangular connector category. The CWN-651-50-0000 uses circular contacts, while HARTING, Amphenol ICC, and 3M substitutes use square contacts. Both geometries are compatible with standard 0.100" (2.54mm) pitch mating receptacles. The shape difference does not affect electrical performance or mechanical fit for board-to-cable/wire applications.

Q: Which substitute offers the best current-carrying capacity?

A: The 3M parts (N3433-6002RB and N3433-6003RB) provide the highest current rating at 1.75A compared to the CWN-651-50-0000 at 1A. The HARTING 09185506924 and Amphenol ICC 71918-050LF do not specify current ratings. For applications requiring higher current capacity, the 3M substitutes are the appropriate selection.

Q: Are all substitutes RoHS compliant?

A: Yes. The CWN-651-50-0000 is ROHS3 compliant. The HARTING 09185506924 is also ROHS3 compliant. The Amphenol ICC 71918-050LF and both 3M parts (N3433-6002RB and N3433-6003RB) are RoHS compliant. All parts meet regulatory requirements for lead-free and restricted substance compliance.

Q: What is the temperature operating range difference, and does it matter?

A: The CWN-651-50-0000 and HARTING 09185506924 support -55°C to 125°C. The 3M substitutes support -55°C to 105°C, a 20°C reduction in upper temperature limit. For applications operating above 105°C, the CWN-651-50-0000 or HARTING part is required. For standard industrial applications within 105°C, the 3M substitutes are functionally equivalent.

Q: How do packaging options affect my selection?

A: The CWN-651-50-0000 packaging is not specified. HARTING and 3M parts are supplied in bulk packaging, while Amphenol ICC 71918-050LF is supplied in tube packaging. Packaging affects handling, storage, and assembly line integration but does not affect electrical or mechanical performance. Select based on your assembly process requirements and inventory management practices.

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