The data sheets for diodes Provides maximum ratings, electrical characteristics, mechanical data, graphs of parameters, etc. for electrical device which are currently in use.
We can see several parameters in a data sheet for diodes:
Maximum ratings of Diodes:
i) VRRM: (Peak repetitive reverse voltage).
–The Peak repetitive reverse voltage can be defined as the maximum reverse peak voltage that can be applied repetitively across the diode.
ii) VR: (DC blocking voltage)
DC blocking voltage can be defined as the maximum reverse dc voltage that can be applied across the diode.
iii) VRSM: (Nonrepetitive peak reverse voltage)
Non repetitive peak reverse voltage is the maximum reverse peak value of non repetitive voltage that can be applied across the diode.
iv) IO: (Average rectified forward current)
IO is the maximum average value of a 60Hz rectified forward current.
v) IFSM: (Nonrepetitive peak surge current)
IFSM is the maximum peak value of non repetitive (of one cycle) forward surge current..
vi) TA:
– Ambient temperature can be denoted by TA.
vii) TJ:
– Operating junction temperature range can be defined by TJ.
viii) Tstg:
Tstg is the storage junction temperature range.
Electrical Characteristics of a diode :
vF: vF can be defined as the instantaneous voltage across the diode in forward-biased condition when forward current is 1 A at 25oC. That can be generally shown by the help of a graph.
VF(avg): VF(avg) is the maximum forward voltage drop averaged over a full cycle.
IR: IR is the maximum current occurred when the diode is in reverse-biased condition.
IR(avg): IR(avg) can be defined as the maximum reverse current averaged over one cycle (when reverse-biased with an ac voltage).
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Diodes