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Normal SMT Electronic Components Specifications

- Aug 28, 2018 -

PCBA processing IC components are mainly divided into two categories: DIP and SMD, DIP plug-in IC, and SMD (Surface Mount Device) surface mount components.


So, what is SMD 0603, 0805, 1206 ?


It refers to the package size of the component, and the dimension is the length x width. The unit used can be inch or mm. Generally speaking, the resistance and capacitance of SMD are all used to describe the size of components. A total of 4 digits indicates a set of 2 digits.


0603: 0.06"x0.03", or 60x30 mils, or 1.6x0.8mm (Note: 1mil = one thousandth of an inch)


0805: 0.08"x0.05", or 80x50 mils, or 2.0x1.25mm


1206: 0.12"x0.06", or 120x60 mils, or 3.2x1.6mm

 



Size and unit relations:

PackageDimensions, length × widthTypical resistor
power rating (W)
Comments
MetricImperial
0402010050.4 mm × 0.2 mm0.0157 in × 0.0079 in0.031[9]
060302010.6 mm × 0.3 mm0.024 in × 0.012 in0.05[9]
100504021.0 mm × 0.5 mm0.039 in × 0.020 in0.1,[9] or 0.062[10]
160806031.6 mm × 0.8 mm0.063 in × 0.031 in0.1[9]
201208052.0 mm × 1.25 mm0.079 in × 0.049 in0.125[9]
252010082.5 mm × 2.0 mm0.098 in × 0.079 in
Typical inductor and ferrite bead package[11]
321612063.2 mm × 1.6 mm0.126 in × 0.063 in0.25[9]
322512103.2 mm × 2.5 mm0.126 in × 0.098 in0.5[9]
451618064.5 mm × 1.6 mm0.177 in × 0.063 in[12]

453218124.5 mm × 3.2 mm0.18 in × 0.13 in0.75[9]
456418254.5 mm × 6.4 mm0.18 in × 0.25 in0.75[9]
502520105.0 mm × 2.5 mm0.197 in × 0.098 in0.75[9]
633225126.3 mm × 3.2 mm0.25 in × 0.13 in1[9]

29207.4 mm × 5.1 mm0.29 in × 0.20 in[13]


 

Capacitor specification


There are many different types of capacitors, which are mainly made up of different materials, such as ceramic capacitors, tantalum capacitors, electrolytic capacitors, etc. 0, 1uF or more are considered to be large capacitance values. Large capacitors have positive and negative poles (recognition capacitors)


  In terms of SMD capacitors, unlike resistors, it can only be seen from the specifications on the Tape.


 In principle, however, from the volume of the SMD capacitive element, the larger the volume, the larger the capacitance value.



The specification on the Tape will see a similar value for 104,103, the size of its table capacitance value. 104, the same as the above representation, 10x 10 4th power pF => 100000 pF = 100nF = 0.1uF. Similarly, 330 is expressed as 33pF.


Other SMD components


Transistor for SMD, SOT (Small Outline Transistor), such as SOT-23


For SMD's IC, SOIC (Small Outline IC), such as SOIC-8, SOIC-16


The more pins of the IC, the more different packaging technologies will be derived (that is, the case package of Die will be different), for example

 

TQFP (Thin Quad Flat Pack),100 or 144 pins。

PQFP (Plastic Quad Flat Pack),208 or 240 pins。

BGA (Ball-Grid Array),256 to 1000+ pins。


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