IH=Hold current: maximum current device will
pass without interruption in 20¡æ still air unless
otherwise specified.
Vmax=Maximum voltage device can withstand without
damage at rated current.
Imax=Maximum fault current device can withstand
without damage at rated voltage.
Vmax.interrupt=Maximum interrupt voltage device
can withstand without damage at rated current.
Rmin=Minimum resistance of device as supplied
at 20¡æ unless otherwise specified.
Rmax=Maximum resistance of device as supplied
at 20¡æ unless otherwise specified
Max.Time to Trip=The maximum time a PPTC thermistor
trip from low resistance state to high resistance
state at a given current.
Test Procedures And Requirements
| Test |
Test Conditions
|
Accept/Reject
Criteria |
| Resistance |
In still air@20¡æ |
Rmin¡ÜR¡ÜRmax |
| Time to Trip |
Specified current,Vmax,20¡æ |
T¡Ümaximum Time to Trip |
| Hold Current |
30min, at IH |
No trip |
| Trip Cycle Life |
Vmax,Imax,20cycles |
No arcing or burning |
| Trip Endurance |
Vmax,15min |
No arcing or burning |
|