it relates to reverse recovery charge, Qrr during switch off of diode.
The reverse current has to phases. 1st it reaches to max reverse recovery value , Irrm (in opposite direction of forward current), 2nd it finally reaches to zero.
Softness factor,S is the ratio of the time is needed in phase 2, t2 to the time needed in phase 1 t1, S= t2/t1
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Well, honey, the softness factor of a diode is a measure of how abruptly the diode conducts electricity when it's turned on. It's calculated by taking the derivative of the diode current with respect to the diode voltage. So, in simple terms, it tells you how gently or harshly the diode starts conducting when you apply a voltage across it. Hope that clears things up for you, sugar!
2B stands for 2Black. It is the softness or hardness of a pencil. If you thought there was only one pencil type, think again. There are a variety of lead pencils, ranging in softness or hardness. ^^
a proper factor is a factor.
a factor bug is a factor
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
If it does not factor properly then you cannot factor it.