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Home Products Connectors, Interconnects Rectangular Connectors - Board Spacers, Stackers (Board to Board)~~HDWM-31-57-S-S-355-SM~~

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See specifications for product details.

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HDWM-31-57-S-S-355-SM - Samtec Inc.

Name: Samtec Inc. HDWM-31-57-S-S-355-SM
Brand: Samtec Inc.
SKU: HDWM-31-57-S-S-355-SM
Availability: InStock
Rating: 5 (9 reviews)

Manufacturer Part Number: HDWM-31-57-S-S-355-SM

Manufacturer: Samtec, Inc.

Allelco Part Number: 98D-HDWM-31-57-S-S-355-SM

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 49,771 pcs available, New & Original

Parts Description: CONN HDR 31POS 0.05 STACK SMD

Package: Bulk

Data sheet: -

RoHs Status: ROHS3 Compliant

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Our certification

In stock: 49771

Specifications

HDWM-31-57-S-S-355-SM Tech Specifications
Samtec Inc. - HDWM-31-57-S-S-355-SM technical specifications, attributes, parameters and parts with similar specifications to Samtec Inc. - HDWM-31-57-S-S-355-SM

Product Attribute	Attribute Value
Manufacturer	Samtec, Inc.
Termination	Solder
Series	Flex Stack, HDWM
Row Spacing	-
Pitch	0.050" (1.27mm)
Package	Bulk
Number of Rows	1
Number of Positions	31
Mounting Type	Surface Mount

Product Attribute	Attribute Value
Length - Tail	-
Length - Stack Height	0.355" (9.017mm)
Length - Post (Mating)	0.380" (9.652mm)
Length - Overall Pin	0.735" (18.669mm)
Contact Finish Thickness - Post (Mating)	30.0µin (0.76µm)
Contact Finish - Post (Mating)	Gold
Color	Black
Base Product Number	HDWM-31

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8536.69.4040

Parts with Similar Specifications

The three parts on the right have similar specifications to Samtec Inc. HDWM-31-57-S-S-355-SM

Product Attribute
Part Number	HDWM-31-57-G-S-355-SM	HDWM-31-57-S-S-250-SM	HDWM-31-58-G-S-355-SM	HDWM-31-57-L-S-250-SM
Manufacturer	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Length - Stack Height	-	-	-	-
Number of Positions	-	-	-	-
Number of Rows	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Length - Overall Pin	-	-	-	-
Length - Post (Mating)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Color	-	-	-	-
Contact Finish - Post (Mating)	-	-	-	-
Length - Tail	-	-	-	-
Termination	-	-	-	-
Series	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Contact Finish Thickness - Post (Mating)	-	-	-	-
Pitch	-	-	-	-
Row Spacing	-	-	-	-

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Customer Reviews

Evaluation: 10 Articles

Circ***FixerTom

Sep 2, 2026

Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
Retr***UWorks

Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
Andr***PCBLab

Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
Leat***O'Keefe

Aug 20, 2026

one of my hobbies is skydiving. and when i'm skydiving this works great.
Ilen***

Aug 20, 2026

This product works considerably well. It secretly improves my basketball by a lot.
Indu***ialPower

Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
Nikh***ech

Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.
Embe***dMotion

Aug 5, 2026

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.
FPGA***dio

Jul 30, 2026

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.
Nord***mbedded

Jul 20, 2026

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

QC (Quality Warranty)
Payment Support
Packaging
Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.

Strict quality inspection builds a solid foundation for electronic component quality.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner

Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone: +00852 9146 4856
Email: info@allelco.com

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

SMTA
IPC
ESD
PSMA