Understanding the differences in performance between the two types of devices will make the best circuit protection choice easier.
Ceramic resettable fuse.
The most obvious difference is that the ptc is resettable.
A ceramic fuse is built to withstand high temperatures.
A resettable fuse or polymeric positive temperature coefficient device pptc is a passive electronic component used to protect against overcurrent faults in electronic circuits the device is also known as a multifuse or polyfuse or polyswitch they are similar in function to ptc thermistors in certain situations but operate on mechanical changes instead of charge carrier effects in semiconductors.
Low pressure bs88 4 fuse 240v semiconductor protection fuses for car.
Item 286542 model bp tl 30.
Resettable ptc fuses optiffuse offers a complete range of resettable fuses in radial axial and surface mount configurations.
Temperature derating curves comparing ptcs to fuses chart key curve a thin film fuses and 313 series 010 to 150a curve b flat pak telelink nano2 pico blade terminal special purpose and other leaded and cartridge fuses except 313 010 150a curve c resettable ptcs 60 c 76 f 20 40 60 80 100 120 140 40 c 40 f 20 c 4 f.
The more thermally stable fuse is typically filled with sand in order to prevent the conductive film from forming.
750vdc fast acting fuse ac387501 series for energy vehicle dc applications.
Bourns ceramic ptc resettable fuses for telecom overcurrent protection.
Narrow and matched resistance tolerances used in customer premise equipment cpe central office equipment co and acess equipment.
The fuse melts open interrupting the current flow and the ptc changes from a low resistance to a high resistance to limit current flow.
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Ptc thermistor for overcurrent protection.
Fuse clips fuseclips can be inserted into a printed circuit board allowing electronic and automotive fuses to protect critcal circuit components.
Micro fuses radial leaded pcb mounted fuse for use in electronic applications.
Cooper bussmann 3 pack 30 amp time delay plug fuse.
Dc application 1000vdc fast acting fuse energy car protection fuse a301001 series.
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The film is formed when a short circuit melts the fuse element causing a deposit to be seen on the inside of the fuse barrel as a film.