HTK Develops UHS-II-compatible SD Card Socket

Share via AddThis
Posted August 27, 2013

Honda Tsushin Kogyo Co Ltd (HTK) announced Aug 22, 2013, that it has developed a double-sided metal socket supporting the “UHS-II” high-speed (312MBps or 2.496Gbps) SD card standard.

HTK will start to ship samples of the socket in October 2013 and will mass-produce and release it in December 2013. It plans to produce 500,000 units per month in 2015. The price of the sample is ¥500 (approx US$5.06).

The capacities of SD memory cards have been increasing. For example, the “SDXC” standard, whose maximum capacity is 2 Tbytes, was established in 2009. And 64-Gbyte products supporting the SDXC hit the market in 2010.

In such circumstances, there has been a strong demand for a higher data transmission speed for the purpose of reducing data transmission time. Therefore, the UHS-II was established. The maximum bus speed of the UHS-II is 312MBps (2.496Gbps), which is three times faster than that of the current “UHS-I” (104MBps or 832Mbps).

However, as transmission speed increases, it becomes necessary to address the problems of generated electromagnetic noise and heat. So, HTK employed its own “double-sided metal shell structure,” which covers even the parts-mounted area of the printed circuit board (PCB) with a metal plate.

In addition, HTK increased the number of grounding points from two to six, compared with its previous product. As a result, it became possible to reduce electromagnetic noise by 20% and the temperature inside a card by 8°C, compared with a socket having the “one-sided metal shell structure,” which uses plastic for the area contacting a PCB, the company said.

HTK mass-produces its SD card socket having the double-sided metal shell structure at a monthly production rate of about one million units for high-end digital single-lens reflex (SLR) cameras and auto accessories because it has high durability and long-term reliability. The UHS-II-compatible socket will be employed for high-end digital SLR cameras and digital camcorders that require high-speed data transmission speeds and high-end personal computers that are used for processing images and movies taken with the cameras and camcorders, the company said.

For a start, HTK plans to mass-produce two surface-mounted models of the new socket. One of them is a “standard type,” which attaches SD card pins on the side of a PCB. And the other is a “reverse type,” which attaches SD card pins on the other side of a PCB.

Also, the company intends to mass produce dual-inline-package (DIP) products at an early date after the volume production begins. It will produce the new socket in Japan. And all of the types can be assembled with a set of automated equipment, it said.


Source: TechOn

49,040 science & technology articles


Our Articles (see all)

General News

Follow us

Facebook   Twitter   Pinterest   StumbleUpon   Plurk
Google+   Tumblr   Delicious   RSS   Newsletter via Email

Featured Video (see all)

Create games smarter than ever: “fork” and mash-up with RedWire
Keen to create own video game, but the thought of where to start gets you scratching your head?…

Featured Image (see all)

Scientists Set Quantum Record by Using Photons to Ferry Data between Electrons 1.2 Miles Apart
Quantum entanglement is the observed phenomenon of two or more particles that are connected, even over thousands of…