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Message: <blockquote data-quote="laal" data-source="post: 8423936" data-attributes="member: 94459">CapacitorThe types of capacitor which is commonly used in small space circuit like the cellphone uses the Tantalum type of capacitor, Tantalum capacitors are used in smaller electronic devices  including portable telephones, pagers, personal computers, and  automotive electronics.It also offer smaller size and lower leakage than standard. .There are two types of Capacitors used in Mobile Phones Circuits,The Polarized and Non-Polarized Capacitors.This are the Capacitors may look like  that are being used in mobile phones circuit.<img src="http://lh6.ggpht.com/_8JZhVVmpICU/S8AZ1jxX9iI/AAAAAAAAAJ0/xKfKYzguKOA/surface%20mounted%20capacitor.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />The Polarized Capacitor Tantalum Capacitors which is polarized, and may be used in DC  circuits.       Typical values range form 0.1uF to 470uF.Standard Tantalum values change       in multiples of 10, 22, 33, and  47. Normal Temperature Coefficient  [TC]       for Tantalum Capacitors  is +5%.Polarized capacitors are typically used in large voltage situations,  such as  DC line filtering to reduce noise related to uneven voltage  levels after  rectification from an AC source. Mainly measured in  microfarads.  Polarity is critical to these devices. They are marked  with the voltage  rating (usually double the circuit voltage used) as  well as the farad  marking. <img src="http://lh5.ggpht.com/_8JZhVVmpICU/S8AZjQ2fQVI/AAAAAAAAAJg/QQyDKwrIEyE/cpacitor%20polar.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Non-Polarized CapacitorNon-polarized are similar to polarized except the plates are similar  metal. Polarized caps are typically used in large voltage  situations, such as  DC line filtering to reduce noise related to uneven  voltage levels  after rectification from an AC source. Mainly measured in  microfarads.  Polarity is critical to these devices. They are marked  with the voltage  rating (usually double the circuit voltage used) as  well as the farad  marking. <img src="http://lh5.ggpht.com/_8JZhVVmpICU/S8AZjfS_a0I/AAAAAAAAAJc/EXHc35IrzRc/capcitor%20non-polar.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />non-polarized caps are typically  used in low voltage situations, both  AC and DC. Polarity is not  critical. Measured in pico farads typically.  Decimal multiplier prefixes are in common use to simplify and shorten  the notations of quantities such as component values. Capacitance, for example, is measured in Farads, but the Farad is far   too large a unit to be of practical use in most cases. For convenience,  we use sub-multiples to save a lot of figures. For example, instead of  writing 0.000000000001 Farads, we write 1pF (1  picofarad). The more common prefixes and the relationships to one another are as  follows.    Abbrev.PrefixMultiply byor   ppico0.00000000000110-12   nnano0.00000000110-9   µmicro0.00000110-6   mmilli0.00110-3   -UNIT1100   kkilo1000103   Mmega1000000106    Units   1000 pico units=1 nano unit   1000 nano units=1 micro unit   1000 micro units=1 milli unit   1000 milli units=1 unit   1000 units=1 kilo unit   1000 kilo units=1 mega unit   ToleranceAll components differ  from their marked value by some amount. Tolerance specifies the maximum  allowed deviation from the specified  value. Tolerances are normally  expressed as a percentage of the nominal value. For example, a component with a marked value of 100 and a tolerance of   5% could actually be any value between 5% below the marked value (95)   and 5% above the marked value (105). </blockquote>

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