Ihold = Hold current: maximum current device will pass without tripping in 23oC still air.?
Itrip = Trip current: minimum current at which the device will trip in 23 oC still air.?
Vmax = Maximum voltage device can withstand without damage at rated current (I max)?
Imax = Maximum fault current device can withstand without damage at rated voltage (Vmax)?
Pd typ = Typical power dissipated from device when in the tripped state at 23 oC still air.?
Rmin = Minimum resistance of device in initial (un-soldered) state.?
R1max = Maximum resistance of device at 23 oC measured one hour after tripping or reflow soldering of 260 oC for 20 sec.?