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  • How Opto-couplers Work
    The HV diode is commonly referred to as the "photo diode". The photo diode junctions are light sensitive, which means when the diode is exposed to light while reverse biased, the leakage current through it goes up. The brighter the light from the LED, the higher the leakage current through the HV
  • MICRO: Critical Materials?Wafers
    Garth K. Su, MEMC Electronic Materials The control of reverse leakage current in semiconductor wafers is important for reliable operation of all dynamic MOS products such as DRAM and charge-coupled devices. Leakage current is affected by a variety of material parameters: Metallic impurities
  • High-Voltage ICs
    discrete transistors, on the other hand, are made with high-resistivity, lightly doped silicon substrates. Isolation is usually achieved by surrounding each transistor with a junction. When the junction is reverse biased, the depletion region blocks leakage current flow into or out of the device

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