Integrated circuit (IC) electrostatic discharge (ESD) ruggedness can be distinguished by a variety of tests. The most common type of test is the human body model (HBM) and the charging device model (CDM). These two types of tests designed to reveal contain ESD Basic ESD controlled manufacturing environment, the circuit subsisting under what circumstances ESD stress. HBM ESD is the oldest application testing, but the factory ESD control experts generally believe that in the modern highly automated assembly operations, CDM ESD testing is more important. CDM stress magnitude will vary with the size of the device. About the CDM's "conventional wisdom" is more saw no need to test the size of a very small IC Nanjing Vishay optocoupler, because the peak current is fast. IC Product rating industry standard C1 level: the original production by non-Nanjing Vishay diodes, brand new unused, complete package (Note: some from the mainland, Taiwan or other countries or regions overseas products, in full accordance with the specifications of the original brand factory packaging and packaging Nanjing Vishay sensors, functionally identical, and printed with the original brand manufacturer. uncertain quality. High reliability as good as the original authentic quality.). C2 level: brand new unused (Note: the same or similar product features, remove the original logo change for another product identification market collectively, the "alternatives."). D1: no packaging used, the product does not damage the pins, are second-hand. May be re-packaged vendor (Note: Unplug directly from the old board, as some DIP, PLCC, BGA package can be directly unplugged or "junk."). D2: no packaging Vishay, are second-hand. May be re-packaged vendor (Note: Direct removed from the old board, the pin was cut short in such products may be post-processed, would have been cut short stretch or take a long pin) . Vishay sensor PH600S280-48 Nanjing Nanjing Vishay, 耀坤 technology provided by Nanjing 耀坤 Technology Limited. Nanjing 耀坤 Ltd. (www.njykkj.com) strong, credible, in Nanjing, Jiangsu diode industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Yaokun into the brilliant technology and you work for a better future!