AWHW40-G-SMD-R Equivalent & Substitute Parts

Part Overview

The AWHW40-G-SMD-R is a surface mount rectangular connector header manufactured by Assmann WSW Components. This 40-position, 2-row connector with 0.100" (2.54mm) pitch is designed for board-to-cable/wire applications with shrouded 4-wall construction and push-pull fastening. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	40
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0
Operating Temperature	-40°C ~ 105°C
Current Rating	3A

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: connector type (header), contact type (male pin), pitch (0.100"/2.54mm), number of positions (40), number of rows (2), row spacing (0.100"/2.54mm), mounting type (surface mount), shrouding configuration, fastening type (push-pull), contact finish (gold), and material flammability rating (UL94 V-0).

All listed substitute parts maintain these critical electrical and mechanical parameters. Variations in contact material, insulation material, contact length, insulation height, contact finish thickness, and operating temperature range are permitted within the scope of functional equivalence for this product category. Packaging format (tube, cut tape, tape & reel) does not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	AWHW40-G-SMD-R	AWHW 40G-SMD	D2540-6V0C-AR-WG	HTST-120-01-L-DV-A	HTST-120-01-LM-DV-P-TR	HTST-120-01-S-DV-P	HTST-120-01-S-DV-P-TR	N2540-6V0C-RB-WG	TSSH-120-01-F-DV	TSSH-120-01-L-DV	TSSH-120-01-L-DV-A
Manufacturer	Assmann WSW	Assmann WSW	3M	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	3M	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	40	40	40	40	40	40	40	40	40	40	40
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 2 Wall	Shrouded - 2 Wall	Shrouded - 2 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

AWHW 40G-SMD is the direct equivalent from Assmann WSW Components and maintains identical electrical and mechanical specifications with active product status and ROHS3 compliance.

The 3M D2540-6V0C-AR-WG and N2540-6V0C-RB-WG are functionally equivalent alternatives with active status. Both maintain the required pitch, position count, shrouding, and fastening specifications. The D2540 series operates across -55°C to 105°C and the N2540 series across -55°C to 105°C, both extending the lower temperature range beyond the original specification.

Samtec HTST series (HTST-120-01-L-DV-A, HTST-120-01-LM-DV-P-TR, HTST-120-01-S-DV-P, HTST-120-01-S-DV-P-TR) are functionally equivalent with active status and ROHS3 compliance. These parts feature extended operating temperature range (-55°C to 125°C), phosphor bronze contact material, and liquid crystal polymer insulation. All maintain the required 40-position, 2-row, 2.54mm pitch configuration with 4-wall shrouding and push-pull fastening.

Samtec TSSH series (TSSH-120-01-F-DV, TSSH-120-01-L-DV, TSSH-120-01-L-DV-A) are functionally equivalent with active status and ROHS3 compliance. These parts feature 2-wall shrouding instead of 4-wall, extended operating temperature range (-55°C to 125°C), and phosphor bronze contact material. The TSSH-120-01-L-DV-A includes board guide features.

All substitute parts maintain UL94 V-0 flammability rating and are REACH unaffected. Selection should be based on packaging requirements (tube, cut tape, or tape & reel), specific shrouding preference (2-wall vs. 4-wall), and temperature range requirements for the application.

Frequently Asked Questions (FAQ)

Q: Can AWHW 40G-SMD directly replace AWHW40-G-SMD-R?

A: Yes. AWHW 40G-SMD is the active equivalent part from the same manufacturer with identical electrical and mechanical specifications, including pitch, position count, shrouding, fastening type, and contact finish. The primary difference is product status (active vs. obsolete) and packaging format.

Q: What is the difference between 4-wall and 2-wall shrouding options?

A: Shrouding refers to the protective walls surrounding the connector contacts. 4-wall shrouding (AWHW40-G-SMD-R, HTST series) provides complete perimeter protection. 2-wall shrouding (TSSH series) provides protection on two opposing sides. Both configurations maintain the same electrical and mechanical interface specifications. Selection depends on application-specific mechanical protection requirements.

Q: Are Samtec HTST and TSSH series interchangeable with the Assmann part?

A: Electrical and mechanical interfaces are compatible. Both Samtec series maintain the required 40-position, 2-row, 2.54mm pitch configuration, push-pull fastening, and gold-plated contacts. Key differences include contact material (phosphor bronze vs. brass), insulation material (liquid crystal polymer vs. polyamide), and operating temperature range (-55°C to 125°C vs. -40°C to 105°C). Physical dimensions vary slightly; verify PCB footprint compatibility before design implementation.

Q: What are the packaging format options?

A: Substitute parts are available in three packaging formats: Tube (standard packaging for manual assembly), Cut Tape (CT) for semi-automated pick-and-place operations, and Tape & Reel (TR) for fully automated assembly lines. Electrical and mechanical specifications remain identical across all packaging formats.

Q: Do all substitute parts meet RoHS compliance?

A: All listed substitute parts are ROHS3 compliant or RoHS compliant. The original AWHW40-G-SMD-R does not specify RoHS status. All parts are REACH unaffected and carry EAR99 export classification.

Q: What is the current rating difference between parts?

A: The original AWHW40-G-SMD-R and AWHW 40G-SMD are rated at 3A per contact. The 3M D2540 and N2540 series are rated at 1.75A per contact. The Samtec HTST series is rated at 3.4A per contact. Current rating selection depends on application power requirements.

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