114
G
E
C
G
E
C
(6) Judging whether the IGBT is normal
Resistance value when IGBT is normal
Above 100 k* Above 100 k* About 47 k* About 47 k* Above 40 k*
Note 1) As the testing instrument may not be consistent, so when testing the normal elements, the testing value can be used as the standard to compare with the elements to be tested, thus the judgment will be more accurate.Note 2) Compared with small signal MOS, FET, NOS-Memor, IGBT has larger capability. Same as these MOS products, IGBT also has the risk of destruction by static electricity. When handling, pay attention to the following points:
1)Transportation, packing
A)Packing with conductive foam, plastic bag or aluminum foil.
B)When handling elements, do not let the holding casing part touch the leading wire terminal part,
especially the gate drive terminal.
C)Conduct operation on the conductive cushion reliably connected to the earth or take measure of
eliminating static electricity such as earthing human body.
2) Test, check
A)when conducting single test of element
When conducting characteristic test and check
When adding voltage, it must begin from 0V. After test, it must return to 0V. For each terminal, especiallywhen using automatic testing instrument, pay special attention not having the residual electron charge broughtfrom the test. For anti-vibration, just connect 100 k*resistance to the gate circuit.
When conducting simple check
Before checking with universal meter, conduct short circuit between gate pole and transmitting pole toeliminate electron charge. Especially when checking the resistance between transmitting pole and electric pole,conduct short circuit between gate pole and transmitting pole in advance. (Sometimes the residual electron
charge on the gate pole drive circuit may lead to damage of the IGBT.
Все каталоги и инструкции здесь: http://splitoff.ru/tehn-doc.html
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