MIL-DTL-24308G (W/ AMENDMENT-3), DETAIL SPECIFICATION: CONNECTORS, ELECTRIC, RECTANGULAR, NON-ENVIRONMENTAL, MINIATURE, POLARIZED SHELL, RACK AND PANEL, GENERAL SPECIFICATION FOR (29-JAN-2014).

This specification covers the requirements for nonenvironmental, polarized shell, miniature, rack and panel connectors having pin and socket, crimp (removable), solder (nonremovable), or insulation displacement (nonremovable) contacts with rigid or float mounting, designed for -55 degrees C to +125 degrees C operating temperature range.

MIL-DTL-24308G SPEC

Most electronic devices, such as laptops and other computer equipment will include at least one standard USB Type-A port, so it's fair to say that USB connectors have been around for a long time. Smaller devices like smartphones, power banks, and external hard drives will usually feature either the smaller USB Type B connectors or micro-USB connectors to save valuable space.

All of a sudden, USB Type C connectors or USB-C as they're now being called, are being championed as a one-size-fits-all solution for charging and transferring data between devices. The question is though, is USB-C really any better than we've been using before? We're going to look at some of its key features compared to the standard USB-A port.

The reversible new shape

The USB-A has a much larger physical connector than the Type C, Type C is around the same size as a micro-USB connector. Unlike, Type A, you won't need to try and insert it, flip it over and then flip it over once more just to find the right orientation when trying to make a connection. The beauty of Type C is that it can be inserted any way up as the connector pins are the same on either side.

Supporting the new standard

The USB-C connector supports various exciting new USB standards like USB 3.1 – which allows extremely fast data transfers of up to 10 Gbps – and USB PD, which enables power delivery.

Even faster charging

Currently, a standard USB 2.0 connection offers up to 2.5W of power (which is just about enough to charge your phone at a snail’s pace), while the USB PD standard supported by USB-C can deliver a massive 100W of power, which is more than enough to charge a laptop. It's bidirectional, which means connected devices can both send and receive power – at the same time, to top it all off.

Space-saving

It's safe to say that the days of devices having a large number of different connector ports are long gone. USB-C ports can support a variety of different protocols using “alternate modes,” which allows you to have adapters that can output other types of connections from the USB port. Now, HDMI, DisplayPort, VGA, headphone and power ports can be streamlined into a single type of port, helping devices to become slimmer than ever before.

Interoperability

The USB-C won't be one of those obscure connectors that are exclusive to one company's devices alone. More than 700 technology companies collaborated on the design and adoption of this new connector, including big names like Apple, Google, Dell, HP, Intel, Microsoft, and Samsung. We can expect the USB-C to become a common feature in new electronic devices being released over the next year or so.

Backward compatible

Even though you can't physically connect a USB-C connector to a Type-A port, you can use a physical adaptor to plug older devices into a USB-C port. However, the underlying standard is backwards-compatible, meaning a USB 3.0 standard connector can be used with a USB 2.0 port, although it will only work at the speed and capability of the older standard, in this case, the USB 2.0 standard.

It's clear that USB-C is the new emerging standard for power and data, and will become ubiquitous across the majority of devices. It will also give rise to a range of adaptors for other types of connectors as devices become slimmer and increasingly simpler when it comes to power and data ports.

Source of the article:  https://reurl.cc/ZOeQZM

USB_Infographic

The last 20 years have been called the decades of disruption for good reason. Over this period, new technologies and products have been introduced, have peaked and have become obsolete at a rate never seen before.

Recognizing how quickly a disruptive technology can impact current state-of-the-art products can be useful in anticipating change and developing an appropriate response to market demands for constantly upgrading performance, both at the system and component level.

This article is to review some of the major advances that have been made in the electronics industry over the past 20 years. 

Universal Serial Bus Connectors 

The performance of any computing device can be severely hobbled by limiting its capacity to accept and deliver data to the outside world. A data bottleneck at the input/output (I/O) panel will throttle information throughput to the capacity of the least efficient portal. 

For many years, variations of 15- and 25-pin subminiature D shell connectors were capable of providing adequate I/O data rates to peripheral devices. With its origins in the world of military applications, reliable pin and socket contacts, and rugged shells, these connectors were modified to commercial versions at consumer prices and became a de facto standard, appearing in everything from video connections to mouse and keyboard interface applications. 

As demands for data rates increased from kilobits to megabits, and the space available for external interconnect decreased, new connector interfaces were required. In 1996, a consortium of electronic industry leaders formed the USB Implementors Forum and released the first iteration of the Universal Serial Bus interface. 

The refined USB 1.1 specification was published with the objective of replacing a confusing array of existing interfaces that threatened compatibility among an expanding array of peripheral devices, including flash memory and external hard drives, scanners and printers. Initial transfer rates were 1.5Mb/s through a relatively small rectangular connector using low insertion force leaf contacts that could support thousands of mating cycles. The user-friendly metal housing and post molded backshell could be mated only in one direction, assuring proper polarity. 

A major advantage of the USB standard is the ability to deliver power as well as signal, enabling remote devices to operate without an external power source. Signal contacts were recessed to allow power contacts to mate first. This “hot mating” capability is another key feature of the USB interface.

The USB standard A and B configurations quickly achieved namesake status and were widely adopted throughout the industry.

Faster, More Versatile Connections 

The USB interface is a perfect example of a standard that continued to evolve to meet the performance and packaging requirements of the industry it serves. 

The USB 2.0 standard, released in 2000, was rated up to 480Mb/s. In addition to retaining the same A and B form factors, two miniaturized versions were introduced. USB Mini-A and B improved the signal density of the interface to address the burgeoning market of portable devices, including laptop computers and tablets, where I/O space is at a premium. Micro A and B connectors consumed even less space on devices. The added advantage of distributing power along with data opened up entirely new classes of equipment. These miniaturized connectors quickly become a standard in charging applications.

In 2011, the upgrade to USB 3.0 introduced several new interface configurations and further pushed transfer rates to a maximum 4.8Gb/s. A 9-pin connector referred to as “Superspeed USB” features two rows of contacts to allow use of the standard A shell profile as well as backward electrical compatibility. A new type B introduced a new profile, while a Micro B configuration known as the “sidecar” interface become standard in external memory hard drive applications.

USB 3.1 Gen 2 offers transfer rates to 10Gb/s, and introduced some confusion when the Implementors Forum announced USB 3.2 running at 20Gb/s.

The Current Standard 

USB Type-C is the most current and speedy interface in the family and finally solved the problem that prior versions required connectors mate in only one direction. USB-C utilizes a rugged symmetrical 24 pin interface that is reversible. Not only is it 60% smaller than Type A, but it now features 10Gb/s transfer rates with the capability of distributing up to 100 watts of power. A somewhat confusing extension dubbed USB 3.2 Gen 2×2 is rated to 20Gb/s. 

Never satisfied with current achievements, the USB Implementors Forum published the USB 4 specification in September of 2019. The connector will remain Type C but will integrate Intel Thunderbolt 3 technology with transfer rates to 40Gb/s. USB 4 is backward compatible with USB Type-C protocols, including USB 3.2, DisplayPort, and Thunderbolt 3, simplifying connectivity for entirely new generations of equipment. Devices sporting this new interface are expected by 2021. 

A standard that is static has little chance of remaining relevant in an industry that is experiencing continuous change. The USB Implementers Forum has demonstrated its commitment to constant upgrades, enabling USB to continue to play a key role in the design of next-generation equipment.

Source of the article:  https://reurl.cc/GV4WVd

Computerworld: http://www.computerworld.com/article/2488194/computer-peripherals-usb-type-c-simpler-faster-and-more-powerful.html

Extreme Tech: http://www.extremetech.com/computing/187882-reversible-usb-type-c-connector-finalized-devices-cables-and-adapters-coming-soon

特此聲明，所有產品皆為無衝突金屬之產品。                       

Herein declare the metal Conflict-Free on products supplied.

為良好的企業，復堯科技股份有限公司致力瞭解與調查供應鏈，以確定及保證金（gold）、錫（tin）、鉭（tantalum）、鎢（tungsten）、鈷（cobalt）、雲母（mica）六種礦產的來源，並非來自剛果民主共和國及其鄰近國家受武裝團體控制之礦區所開採或是循非法走私途徑取得。

故復堯科技股份有限公司從對環境和社會負責的供應商來採購材料。

As a good enterprise, FU-YAO Technology Co., Ltd. is committed to understanding and investigating the supply chain to determine and guarantee the deposit (gold), tin (tin), tantalum (tantalum), tungsten (tungsten), cobalt (cobalt) and mica (mica) The sources of the six minerals are not mined in the Democratic Republic of the Congo and its neighboring countries controlled by armed groups or obtained through illegal smuggling.

Therefore, FU-YAO Technology Co., Ltd. purchases materials from environmentally and socially responsible suppliers.

本公司確認出售之所有產品使用的金屬皆符合無衝突規範（DRC Conflict-Free）。

We confirm that metals used in Products sold are “DRC Conflict-Free”

商業周刊: http://www.businessweekly.com.tw/KBlogArticle.aspx?id=5545

BBC NEWS: http://www.bbc.co.uk/news/technology-25222101

ECHA: http://echa.europa.eu/candidate-list-table/
 

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http://en.wikipedia.org/wiki/IEEE_1284

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The European Court of Justice (ECJ) has ruled that flame-retardant decabromodiphenyl ether (deca-BDE) will be banned from electrical and electronic equipment from July 1, 2008. The European Commission (EC) had originally granted an exemption for deca-BDE from the list of banned substances under the RoHS Directive. However, the ECJ has ruled that it had procedural errors and annulled the exemption from the RoHS Directive's substance restrictions for deca-BDE in polymeric applications set forth in commission decision that was granted in 2005.
All of the Fu-Yao's products are RoHS Directive-compliant and do not include deca-BDE.

PFOS are often used as surfactants. And PFOS have a potential for a long-range environmental damage and therefore fulfill the criteria for being considered as persistent organic pollutants (POPs). So, the European Commission decided that member states are forbidden from using perfluorooctane sulfonates starting from June 27, 2008. Some of the Fu-Yao's products do not have PFOS and will receive certificates now. Welcome to you to inquire with our sales team.