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24 Feb 2012

SMD Packages explained!. The Funkiester writes – [via]

Hello! Well as a result of all the great feedback from the component packages, I’m doing another post about SMD packages! I may be using some of the terminology from the last post in here as well, so just in case, here is the last post.

First off, SMD means Surface Mount Device; There is another acronym used that means pretty much the same thing which is SMT, and that means Surface Mount Technology. This’ll be describing the various packages that an LED can come in, as well as resistor and the more common capacitor packages as well as many other surface mount devices. The big rule about SMD is that many packages are represented by a 4 digit code. The first two digits indicate its length and the second two digits indicate its width. So an 0603 package would be .06″ x .03″ . Although if it isn’t represented by a 4 digit code, that doesn’t mean that it isn’t an SMD component, all that means is that you’ll have to do a little more searching to find the dimensions of your specific component.

The most common packages are the: 0603 , 0805 , 1206, 2512, and the SOT. although we will be discussing the 0606, 1204, 1210, SOD, PLCC, Chimney-Type, 3528, 5050, A, C, D, E. The space on the board where the SMD will sit is called the footprint, and the footprint is like a little diagram as to where the component is to be soldered on the board and how much space it takes up.

SMD Packages explained! - [Link]

24 Feb 2012

High luminous intensity and a low height of Kingbright LED KA-3529 series will enable you to use them for displays backlighting and production of various indication panels.

Nowadays, for a backlight of displays or various panels, there are very often used white LEDs. However there are still a lot of reasons why to use a color backlight. In many applications a color backlight can increase contrast ratio or visibility of a display in a given environment, or it is simply more aesthetic.

Advantages / Features:

  • high luminous flux 4.2-22 lm/ 150mA, according to a type
  • small, only 1.3 mm high PLCC2 package
  • low power consumption
  • 120° large radiation angle

LEDs Kingbright KA-3529 with a high luminous intensity, maximum current up to 150 mA and small dimensions are very suitable for these purposes. In only 1.3mm high PLCC2 SMT package they require only a minimum of space. KA-3529 are available in blue, green, orange and red version.

LED in a PLCC package not only for a display backlight - [Link]

12 Jan 2008

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This 9 min. overview video demonstrating Surface Mount Soldering with inexpensive equipment. Includes soldering of a 603 resistor, PLCC, 44 pin QFP, 208 pin fine-pitch QFP, desoldering using hot air and ChipQuik®, and prototyping with SchmartBoards®

Surface Mount Soldering - [Link]

8 Jan 2008

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Here’s an outstanding surface mount soldering guide from curious inventor -

Surface Mount components, as the name suggests, attach to the surface of boards, not through holes like older components. SMDs (“Surface Mount Devices”) are lighter, cheaper, smaller and can be placed closer together. These factors, among others, mean that the days are numbered for through-hole components with widely spaced leads.

This set of guides will demonstrate (relatively) inexpensive tools and methods for soldering and desoldering SMDs. The first page, Surface Mount Soldering 101, contains a 9 min. video overview. The pages that follow contain more pictures and go into more detail. They also cover some topics not in the video, like hand soldering a QFN chip and using solder paste with a toaster oven. [via]

Surface mount soldering guide - [Link]




 
 
 

 

 

 

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