Diode of Xiao Te radical applies

  We use diode of Xiao Te radical via regular meeting among switch power source, but because differ,differ on the reason function such as the manufacturer very big, when we choose Xiaoteji, must want to consider the following parameter:
   1, guide pressure fall VF
   VF is diode the diode when guide is connected of two end pressure fall, the electricity that should carry diode is bigger, bigger; becomes VF when diode temperature is higher, VF is smaller.
   2, retrorse saturation leakage current IR
   When IR shows in diode two end add retrorse tension, had shed the electric current of diode, diode of Xiao Te radical is retrorse leakage current is bigger, choosing diode of Xiao Te radical is to choose the diode with lesser IR as far as possible.
   3, IF of rated electric current
   When showing diode moves for a long time, fold the average electric current of numerate to be worth according to allowing temperature rise.
   4. IFSM of electric current of the biggest surge
   Allow has flowed excessive to electric current. It is not normal electric current, however instantaneous electric current, this value is quite great.
   5. VRM of voltage of the greatest retrorse peak value
   Although do not have retrorse electric current, want to heighten retrorse tension ceaselessly only, can make diode damages sooner or later. This kind can increase the retrorse tension on, not be instantaneous voltage, the positive and negative that adds repeatedly however to voltage. What add because of giving rectifier is alternating voltage, its maximum is main factor of the regulation. The biggest retrorse voltage that VRM of voltage of the greatest retrorse peak value points to to to avoid puncture can be added. Xiaoteji’s at present highest VRM value is 150V.
   6. The biggest dc is retrorse voltage VR
   Voltage of afore-mentioned the greatest retrorse peak value are the peak value tension that increases repeatedly, VR is the value when adding volts d.c. continuously. Use at dc road, it is very important that retrorse voltage is worth to allowing certainly and upper limit is worth the biggest dc.
   7. FM of top job frequency
   The knot capacitance that writtens guarantee as a result of PN exists, when working frequency exceeds some to be worth, its one-way conductivity will become poor. The FM cost of diode of Xiao Te radical is higher, can amount to 100GHz most.
   8. Restore time Trr reversely
   When working voltage from becoming retrorse voltage to voltage, the good case that diode works is electric current can instantaneous ends. Actually, want defer little time commonly. Decision electric current ends the quantity of delay time, restore time reversely namely. Although it affects the switch rate of diode directly, but it is good to do not say this value is little certainly. Also become namely diode by guide abrupt and retrorse when, the time that retrorse electric current needs to the place when be close to IR by very big attenuation. High-power switch is in charge of the job to be when condition of high frequency switch, this index comes it is important to be.
   9. P of power of the biggest dissipation
   There is electric current to had flowed in diode, with respect to meeting absorption of heat, and make oneself temperature elevatory. Come loose in ministry of actual China and foreign countries hot state also is an influence to P very big. Specific tell even if add in diode the voltage of two end is added by the electricity that passes with flowing recover loss reversely.