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M.2 Connectors - Key to the successful connection
M.2 connectors originally known as NGFF (New Generation Form Factor), become gradually more popular over the form factor MiniPCIe and are used as a standard in computers, communication equipment, and M2M applications.

The main advantage of M.2 connectors, we chose the 123A Series from ATTEND, is the implementation of PCI Express 3.0, Serial ATA 3.0 and USB 3.0. buses into one connector. This eliminated the limitations of SATA interface. The connector is considerably miniaturized and at the length of only 21.8 mm, it has up to 75 pins (0.5mm pitch/ 50V/0,5A).

M.2 connectors are designed as a standard for SSD memory media, WiFi, Bluetooth, GPS/GNSS, NFC, and other modules.

An important fact is that connectors are produced with various keying (A-M). That provides a possibility to differentiate various modules on one board and prevents improper connection (PCIe x2, PCIe x4,...). There are 12 different keys in total, but e.g. SSD modules typically use only 2 of them - B, M, and combination B+M.

M.2 connectors are designed for direct insertion of PCB, i.e. one part of the connection (M) is the PCB and another part is the connector (F). Connectors support various PCB widths - 12, 16, 22 and 30 mm. Depending on a type, M.2 connectors also enable double-sided assembly of components on the PCB.

There is a nomenclature (on the next picture) for specifying the modules for M.2 sockets. The code defines the size, maximum height of components, single or double side assembling and the keying.

We have selected two specific examples of module codes:

3042-S3-B:

  • Width - 30mm
  • Length - 42mm
  • S3 - PCB single side assembled, the maximum height of components 1,5mm
  • Keying B

2242-D2-B-M:

  • Width - 22mm
  • Length - 42mm
  • D2 - Double side assembled PCB, the maximum height of components 1,35mm
  • Keying B and M (missed pins 12-19 and 59-66)

We offer modules in form factor M.2, which are suitable for connectors 123A from Attend.

It is mainly industrial SSD modules from APACER in two sizes - 2242 and 2280, and with capacity from 32 up to 120GB.
Other M.2 modules available from our assortment are communication modules from QUECTEL. They use LTE technology and have space-saving M.2 form factor. They are ideal for M2M and IoT applications.

Selected M.2 connectors from 123A Series from ATTEND can be found in our stock. They are available in 3 different sizes (heights). The height 3,2mm is available with keying A, B, E, and M. Version 4,2mm with keying B and M and the version 5,8mm only with keying B. Any other version of connectors from 123A Series are available upon request.

If you need more information or you are interested in other ATTEND products, we are happy to assist you at sales@soselectronic.com

Features/Advantages of M.2 (NGFF) connector:
  • Miniaturize your layout problems
  • Compared with mini PCI-e, M.2 saves 25% in heights and 55% in the space of the PCB layout
  • Supports A/B/E/M key
  • Supports multiple Wireless connectivity and SSD module card types
  • Applications: Tablets, Servers, Smart TV/STB, Gaming, PCs
Videos

New Generation Form Factor connectors used in new types of SSD disks, WiFi and WAN modules, expansion cards and for general use.

2019061004 / 20.06.2019 / Electronic-components / SOS electronic s.r.o. /

LiPol rechargeable batteries for industrial applications
EEMB's 3.7V lithium-polymer batteries in an ultra-thin design, with high capacity, long life and low weight, are ideal for various mobile devices even in harsh industrial environments.

Design in line with the technology: FOXNEO
Standard product setting new standards. With the upcoming FOXNEO device family, FRIWO is completely redefining power supplies in terms of design.

The king among Cat 4 LTE modules
New Quectel EG25-G is an LTE Cat 4 module optimized specially for M2M and IoT applications. It is the worldwide 4G compatible module and thanks to adopting the 3GPP Rel. 11 LTE technology, it delivers maximum data rates up to 150Mbps downlink and 50Mbps uplink. Modul EG25-G is already available to order.

Verified and Improved Differential Pressure Sensors
Sensirion SDP800 series sensors are the reliable solution for precise airflow measurement in most demanding but cost-sensitive HVAC applications, such as VAV controllers, burners, heat recovery ventilation systems and filter monitoring.

Technical Support at Your Place during Our “Tools Tour“
In recent weeks, we've gone on a tour to you, directly to your companies. We believe that in today's digital era, it is truly valuable to see our products live and have chance to talk about them. Moreover, technical advice is priceless.

7 COLOURS of Terminal Blocks
Green, grey, black, blue, red, yellow and orange - using Euroclamp coloured terminal blocks radically reduces the possibility of incorrect connecting of the cables.

We are expanding the portfolio of IoT products with the world brand USR IoT
Our new supplier, USR IoT, is an expert in industrial communication IoT products with a focus on serial data networking and M2M applications. ISO9001 quality management with more than 20 years of experience in business guarantees its expertise.

Robust industrial connectors - more colours for better price
Connectors of the CA series have a reinforced plastic housing, making them a high-quality and efficient alternative to connectors with metal housings. They are reliable even in harsh environments with high levels of humidity and dust but still easy to connect and install. Practical colour resolution is convenient for both installation and maintenance.

Try “PlusMinus” - an ideal screwdriver for circuit breakers and terminalsvvvvv
Special screwdriver, which is neither slotted, nor Phillips type, but it combines the best of them both. And that's really a big PLUS.

How does the EMC Filter work?
Swiss company Schurter offers EMC filters, common mode chokes, as well as filters integrated with inlet, switch and fuse. Typical EMC filter contains common mode choke and X and Y class capacitors. But how does it work?

Zhaga. Smart Lighting for Smart Cities
Thanks to sensors and communication modules, modern LED luminaires will also be able to provide smart services. A key part of these luminaires are connectors, such as the LUMAWISE Endurance S series. They can be found in our product range under the TE Connectivity brand, a member of the Zhaga Consortium - the organization for standardization of LED lighting components for public lighting.

3 practical multimeter sets for reliable measurement
The 3 best-selling multimeters Fluke IMSK for industrial maintenance coming in three sets, offer a great opportunity to have the world’s best multimeter with a clamp multimeter and accessories at a discounted price of 15%.

Company of the week

NeoCortec

Interesting video


electronica—Leading the way to the All Electric Society


GAMING, COMPUTER ACCESSORIES AND OTHER RELATED PRODUCTS


New video for Pilot VX


electronica 2024, 12.11.-15.11.2024, Munich, DE


Video Report from AMPER 2022


Address Book


NeoCortec


PULSIV


MikroElektronika d.o.o.


Panasonic Industry


Cambridge GaN Devices


Traco Power


BALLUFF


Seica


PEI-Genesis


KEYENCE


CML Microcircuits


SAMTEC


ams-OSRAM


INTEL


TDK Corporation


Giada


RS group


NOKIA


ANRITSU


Digi-Key Electronics


AERS


Flex Power Modules


Danisense


BINDER


Parker Hannifin


MOXA


DANFOSS


Alliance Memory


Intelliconnect (Europe) Ltd.


KIOXIA Europe GmbH



Calendary
intersec Dubai 2025, 14.-16.1.2025
DistribuTECH, 11.2.-13.2.2025, Dallas, TX
asiamold select, Guangzhou, CHN, 25.-27.2.2025
AMPER 2025, Brno, CZ, 18.-20.3.2025
productronica China, Shanghai, 26.-28.3.2025
electronica China 2025, Shanghai, 15.-17.4.2025
electronica India 2025, Dehli, 17.-19.9.2025
SEMICON Europa, München, DE, 18.-21.11.2025
productronica 2025, München, DE, 18.-21.11.2025
electronica 2026, München, DE, 10.-13.11.2026

Interesting video
The ISS Design Challenge ...

Interesting video
Mouser Electronics Warehouse Tour with Grant Imahara



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