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New Technology Opto-diode Targets Custom High Voltage Opto-couplers

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From Voltage Multipliers Inc., comes the OZ100SG Opto-diode featuring high gain, and excellent isolation voltage. 

     The OZ100SG 10kV opto-diode makes it possible to build your own high voltage opto-coupler using your choice of LEDs as a light source.  Simply reverse bias the photo-diode, run forward current through one or more LEDs, expose the photo-diode junctions to light, and monitor the leakage current, Ir.  The level of Ir serves as feedback for the level of forward current through the LED while providing system isolation. 

     Varying forward current in the LED varies leakage current in the photo-diode.

The OZ100SG represents a breakthrough in opto-diode technology.  Capable of operating at up to 10,000 volts reverse bias (10kV Vrwm) is it comprised of twelve active, stacked, silicon junctions.  The key to operation is light sensitive junctions.  Molded in optically clear epoxy, the OZ100SG is a light-sensitive device.  When exposed to light, leakage current, Ir, is the result.  Leakage current is directly proportional to light intensity, so by varying forward current through the LEDs, light intensity from the LED will vary.  Varying light intensity in the LEDs results in a corresponding variation in Ir in the photodiode.  Ir typically ranges from 1uA to 1nA range.  Controlling the exposure to light makes it possible to control leakage current in the photo-diode, thus providing a closed feedback loop.  This makes for a useful way to remotely monitor electronically sensitive systems.

     Other light sources can be used to generate leakage current in the photodiode.  

  • Photo-diode reverse leakage is linear within stated operating parameters.
    Leakage current is directly proportional to the
    Level of reverse bias, Vrwm  
    Distance of the light source from the junctions
    Wavelength of the light source.
  • High Voltage Gain is defined as "
    Opto-diode current divided by LED forward current x 100%"
    (Io/Iled) x 100%
  • The optimum light wavelength has been experimentally determined to be between 890nm and 940nm.

Specifications include 10kV Vrwm, 50mA Io, 3000ns Trr.  Dimensions are .450” length x .180” x .180”l (11.43mm x 4.57mm x 4.57mm). 

Pricing – For a quote contact VMI Sales at 559.651.1402 ext. 115 or email kspano@voltagemultipliers.com.  

  • Applications include
    High Voltage Switches
    Remote Control Circuitry
    HV Linear Regulators
    Laboratory Equipment (i.e. Mass Spectrometers)
    Pockels Cells.

OZ100SG diodes are 100% tested for Ir, and forward voltage drop, Vf.  The overall package is very small - .45” length x .180” x .180” {11.43 mm length x 4.57 mm width x 4.57mm height].

The OZ100SG provides high isolation voltage, and high gain, in the smallest package available.

Contact Voltage Multipliers Inc. for more information.

Voltage Multipliers, Inc.

8711 W. Roosevelt Ave.

Visalia, CA  93291 USA

(P) 559.651.1402

(F) 559.651.0740

http://www.voltagemultipliers.com/
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