2017年8月21日星期一

How to Quickly Know SMD Components on Circuit Board?


Surface Mounted Devices (SMD) is one of electronic components and assemblied in high density, small size and light weight. The volume and weight is only 1/10 of tranditional DIP components. Being replaced by SMD and through PCB assembly, the volume of electronic products is reduced 40% to 60% and the weight 60% to 80% and with high reliability and anti-vibration.

Specifications for Various SMD Components:

ClassificationParameterPicture
Tantalum 
Size & Specification: TANA,TANB,TANC,TANDSOT  
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transistor SOT23, SOT143, SOT89 etc.
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MELF Cylindrical Element DIODE, RESISTOR
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SOIC Integrate Circuit Dimensions: SOIC08, 14, 16, 18, 20, 24, 28, 32  
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QFP Close pitch integrated circuit
PLCC integrate circuit  
PLCC20, 28, 32, 44, 52, 68, 84
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BGA 
Ball Grid Array Package Integrated Circuit
Array Spacing Specifications: 1.27, 1.00, 0.80
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CSP Integrated Circuit Element length does not exceed inside the length of the chip with 1.2 times Array spacing <0.50的MICROBGA  
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Chip RESISTOR , CAP
Dimensions: 0201,0402,0603,0805,1206,1210,2010, 
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