Hello Folks,
Does anyone know a manufacturer that provides a wee bit more info in datasheets for their TVS?
The issue:
We have SMAJ78CA in a board because long cables, filters and such can cause nasty ringing. The board must tolerate several 100msec bursts of
80V amplitude in a row, but only on rare occasions and then such a burst is a one-time event. Long story short, these things won't clamp well before 100V is reached in the ringing and then some stuff with 100V abs max ratings can go phhhhut.Unfortunately min-max breakdown voltage for such TVS is only spec'd at
1mA which isn't helpful. If there was a spec for, say 20mA, that would be different. I have inquired but not much hope. Does anyone know a mfg that specs also at higher currents? Must be in the tables and not just typical graphs because this product goes into a safety-critical and thus regulated market.Tried a few SPICE models such as the ".SUBCKT 1smb70at3g" from:
But they all seem a bit on the primitive side, either a simple diode model or piecewise linear, and also no min-max.