CWN-502-20-0021 Equivalent & Substitute Parts

Part Overview

The CWN-502-20-0021 is a rectangular connector header manufactured by CW Industries, designed for through-hole, right-angle mounting applications. This shrouded 20-position header with 2.54mm pitch serves board-to-cable/wire interconnection requirements. The part is Active in product status with full inventory availability. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component selection from qualified manufacturers.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature Range	-55°C ~ 125°C
Current Rating	1A
RoHS Status	ROHS3 Compliant
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the CWN-502-20-0021 is determined by the following critical parameters:

Connector Type, Contact Type, Number of Positions, Number of Rows: Must match exactly (Header, Male Pin, 20 positions, 2 rows)
Pitch - Mating and Row Spacing - Mating: Must be 0.100" (2.54mm) for PCB footprint compatibility
Mounting Type and Shrouding: Must be Through Hole, Right Angle with Shrouded - 4 Wall configuration
Termination: Must be Solder
RoHS and Flammability Compliance: Must maintain ROHS3 Compliant and UL94 V-0 ratings

The identified substitute parts D3428-5002-AR and N3428-5002RB meet these core electrical and mechanical requirements. Variations in contact material, contact finish specifications, fastening type, and current rating are secondary parameters that may differ between substitutes while maintaining functional compatibility.

Parameter Comparison

Parameter	CWN-502-20-0021 (CW Industries)	D3428-5002-AR (3M)	N3428-5002RB (3M)
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20
Number of Rows	2	2	2
Pitch - Mating	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)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Finish - Mating	Gold	Gold	Gold
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating (Amps)	1A	1.75A	1.75A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both D3428-5002-AR and N3428-5002RB are qualified substitutes for the CWN-502-20-0021 based on matching core electrical and mechanical specifications. All three parts maintain Active product status and ROHS3 Compliant certification with UL94 V-0 flammability rating.

The CWN-502-20-0021 supports an operating temperature range of -55°C to 125°C, while both 3M substitutes operate within -55°C to 105°C. Applications requiring operation above 105°C must use the primary CWN-502-20-0021 part.

The 3M substitutes provide higher current ratings (1.75A versus 1A), which offers design margin in applications with elevated current requirements. Both substitutes are available in production quantities with confirmed inventory.

Frequently Asked Questions (FAQ)

Q: Can D3428-5002-AR or N3428-5002RB be used as direct replacements for CWN-502-20-0021?

A: Yes, both parts are functionally compatible substitutes. They share identical connector type, contact configuration, pitch, mounting style, and shrouding. PCB footprints are compatible. Verify application requirements for operating temperature range and current rating before selection.

Q: What is the difference between D3428-5002-AR and N3428-5002RB?

A: Both are 3M 20-position headers with identical electrical and mechanical specifications. D3428-5002-AR is supplied in Tray packaging with Push-Pull fastening and Brass contact material. N3428-5002RB is supplied in Bulk packaging with Push-Pull fastening and Copper Alloy contact material. Contact finish thickness on the post differs between the two parts.

Q: Are there temperature limitations when substituting?

A: Yes. The CWN-502-20-0021 operates to 125°C, while D3428-5002-AR and N3428-5002RB operate to 105°C maximum. Applications requiring sustained operation above 105°C must use the CWN-502-20-0021.

Q: Do all three parts meet RoHS and flammability requirements?

A: Yes. All three parts are ROHS3 Compliant and carry UL94 V-0 material flammability rating. All have Moisture Sensitivity Level 1 (Unlimited).

Q: What packaging options are available?

A: CWN-502-20-0021 packaging is not specified in the data. D3428-5002-AR is supplied in Tray packaging. N3428-5002RB is supplied in Bulk packaging. Confirm packaging requirements with procurement specifications.

Q: Are the fastening mechanisms compatible?

A: The CWN-502-20-0021 uses Latch Lock/Eject Hooks (Long fastening type). Both 3M substitutes use Push-Pull fastening. While both mechanisms provide secure mating, verify that mating connectors are compatible with the fastening style of the selected part.

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