电子元器件基础培训课.ppt

电子元器件基础培训课ponents Training
Summary:
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ponents Package and Polarity。
电子元器件封装和极性
BGA,CSP,QFN,LGA封装的介绍。
Resistor and Capacitors Marking System
电阻电容标识识别
ponents Packing
SMT器件的包装
PONENTS。
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Rectangular ponents (mostly resistors and capacitors)
01005 - " × " ( mm × mm)
0201 - " × " ( mm × mm)
0402 - " × " ( mm × mm)
0603 - " × " ( mm × mm)
0805 - " × " ( mm × mm)
1206 - " × " ( mm × mm)
1812 - " × " ( mm × mm)
2512 - " × " ( mm × mm)
Tantalum capacitors:
Size A (EIA 3216-18): mm × mm × mm
Size B (EIA 3528-21): mm × mm × mm
Size C (EIA 6032-28): mm × mm × mm
Size D (EIA 7343-31): mm × mm × mm
Size E (EIA 7343-43): mm × mm × mm
MELF—Metal Electrical Face - (Barrel ponents, mostly resistors and diodes):
Size 0201: L: D: (solder pad fits rectangular 0805)
Size 0204: L: D: (solder pad fits rectangular 1206)
Size 0207: L: D:
正极
阴极
PONENTS。
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SOD - Small outline diode
SOD-323: × × mm
SOD-123: × × mm
SOD-80C: × × More info
SOT - small-outline transistor, with three terminals
SOT-23 - 3 mm × mm × mm body - three terminals for a transistor, or up to eight terminals for an integrated circuit
SOT-223 - mm × mm × mm body - four terminals, one of which is a large heat-transfer pad
DPAK (TO-252) - discrete packaging. Developed by Motorola to house higher powered devices. Comes in three- or five-terminal versions
D2PAK (TO-263) - bigger than the DPAK; basically a surface mount equivalent of the TO220 through-hole package.
D3PAK (TO-268) - even larger than D2PAK
PONENTS。
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SO IC --- Small-Outline Integrated Circuit - 8 or more pins, gull-wing le