Suntan Blog

Tantalum SMD capacitors are widely used to provide levels of capacitance that are higher than those that can be achieved when using ceramic capacitors. The capacitor technology that is used within SMD tantalum capacitors is based on the solid tantalum capacitor technology. This is robust and enables very small capacitors to be made.

For many years tantalum capacitors were used in SMD applications because electrolytic capacitors were not able to survive the high temperatures of the soldering process. Now that electrolytic capacitor technology has been developed to withstand the soldering process, these capacitors are now also widely used. Despite this, the other advantages of tantalum capacitors are employed in many circuits, and they are still used in vast quantities.

Suntan’s Chip Tantalum Capacitor - SMD is solid electrolyte, high Volumetric efficiency, stable electric performances.

The following is Features:

• Molded case available in six case codes
• Compatible with all popular 'High Volume' automatic pick and equipment   
• Optical character recognition qualified

A varistor is an electronic component with a significant non-ohmic current-voltage characteristic. The name is a portmanteau of variable resistor

SMD resistors are manufactured by a number of different companies. Accordingly the specifications vary from one manufacturer to the next. It is therefore necessary to look at the manufacturers rating for a specific SMD resistor before deciding upon exactly what is required. However it is possible to make some generalisations about the ratings that might be anticipated.

Power rating: The power rating needs careful consideration in any design. For designs using SMD’s the levels of power that can be dissipated are smaller than those for circuits using wire ended components. As a guide typical power ratings for some of the more popular SMD resistor sizes are given below. These can only be taken as a guide because they may vary.

• 1206: 1/8 watt
• 0805: 1/10 watt
• 0603: 1/16 watt

Some manufacturers will quote higher power levels than these. The figures given are conservative.

Tolerance: In view of the fact that SMD resistors are manufactured using metal oxide film they available in relative close tolerance values. Normally 5%, 2%, and 1% are widely available. For specialist applications 0.5% and 0.1% values may be obtained.

Temperature coefficient: Again the use of metal oxide film enables these SMD resistors to provide a good temperature coefficient. Values of 25, 50 and 100 ppm / C are available.

Suntan has supply SMD Varistor which called TSVC, TSVC is widely used in Notebook, PDA, Cellular Phone, MP3,Main board, LCM, HUB, Microphone, Wireless LAN, VOIP, Auto electronic and so on. At Suntan website: www.suntan.com.hk ,they have introduced the details about SMD Varistor TSVC by PDF: http://www.suntan.com.hk/pdf/Varistor/TSVC.pdf

The ceramic SMD capacitors form the majority of SMD capacitors that are used and manufactured. They are normally contained in the same type of packages used for resistors.

• 1812 - 4.6 mm ~ 3.0 mm (0.18" ~ 0.12")
• 1206 - 3.0 mm ~ 1.5 mm (0.12" ~ 0.06")
• 0805 - 2.0 mm ~ 1.3 mm (0.08"~ 0.05")
• 0603 - 1.5 mm ~ 0.8 mm (0.06"~ 0.03")
• 0402 - 1.0 mm ~ 0.5 mm (0.04"~ 0.02")
• 0201 - 0.6 mm ~ 0.3 mm (0.02"~ 0.01")

Suntan Multilayer Ceramic Capacitor - SMD - TS18 has four types of packages used for resistors. In Suntan’s website www.suntan.com.hk there is a Dimensions of Multilayer Ceramic Capacitor - SMD - TS18 as followings:

MLCC capacitors are marvels of modern material science. Manufacturing MLCC capacitors is considerably more complicated than manufacturing dipped ceramic capacitors. First, the base ceramic material is mixed with a binder and fashioned into thin sheets. Electrodes are painted onto one side of the sheets using a paint that consists of a liquid binder with fine metal particles in suspension. The metals that are used include gold, palladium, platinum, and silver alloys. The reason for using these metals is that when the base ceramic is fired, oxygen is required for the ceramic proper to form.

Once the ink is dry, the sheets are stacked on top of each other. The painted electrodes are arranged so that alternate electrodes exit from opposite ends. The top- and bottom-most layers do not have painted electrodes. The laminated layers are then compressed and fired, which sinters them into one monolithic structure.

Next, the ends are terminated, often using silver. For leaded capacitors, wires are attached, and finally the capacitor is encapsulated in plastic and marked. In the case of chip capacitors, the silver end terminations are covered with tin to aid soldering. The whole capacitor may be covered with lacquer.