Complete the following steps to enter the model's general data:

  1. Click the General tab.
  2. Look up data information for the diode in a databook.

Complete the following steps to enter Reverse characteristics data:

  1. In the databook, find the “Maximum Ratings and Electrical Characteristics” table.
  2. Based on information in this table, enter the following values:
    • Maximum repetitive peak reverse voltage (VRRM)
    • Maximum DC reverse current at VRRM (IR)
    • Typical reverse recovery time (trr)

Complete the following steps to enter Reverse breakdown data:

  1. In the databook, find the “Reverse Voltage vs. Reverse Current” chart.

    If no data is available, enable Check if data not available.

  2. On the chart, locate the graph that indicates the ambient temperature of 25° C.
  3. Select a point on the graph that represents the mid-point of the horizontal direction.
  4. Use the coordinates of this point to enter values for:
    • Reverse breakdown voltage (BV)
    • Reverse breakdown current (IBV)

Complete the following steps to enter Instantaneous forward characteristics data:

  1. In the databook, locate the “Typical Instantaneous Forward Characteristics” graph—for example:

  2. Find the point of lowest forward voltage, at beginning point of the curve. Use the coordinates of this point to enter values for:
    • Lowest forward current (IF1)
    • Lowest forward voltage (VF1)
  3. Find the point of highest forward voltage, or the end point on the curve. Use the coordinates of this point to enter values for:
    • Highest forward current (IFM)
    • Highest forward voltage (VFM)
  4. Using your eye or a ruler, find the second or intermediate point on the curve which you think best identifies the transition point in the curve.

      Guidelines for selecting the intermediate point vary from one databook to another. If the graph is provided in logarithmic format, which is usually the case, a good way to find this point is to place a ruler along the beginning of the curve in the lower voltage area, which will look like a straight line. Where the curve begins to diverge from your ruler, use this point as your intermediate point. If the graph is provided in linear format, plot the data in logarithmic fashion and follow the ruler procedure.

  5. Use the coordinates of this point to enter the values for:
    • Forward current (IF2)
    • Intermediate forward voltage (VF2).