What is the difference between the film caps and the disk capacitator?
In other words, why would one choose one over the other in a circuit?
2007-03-16 05:08:55 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Tolerence, thermal characteristics and high/low frequency performance. Read all about them --
http://en.wikipedia.org/wiki/Capacitor#Capacitor_types
2007-03-16 05:13:53 · answer #1 · answered by Gene 7 · 0⤊ 0⤋
By disc I take it you mean ceramics? If so, ceramics have most of the advantages in terms of dielectric (higher constant = more capacity in a smaller package), voltage capacity per unit thickness, and lower losses. The 2 advantages film caps have are cost and high-voltage failure mode; film caps will usually open under failure, whereas ceramics tend to short. Therefore in many high-power applications film caps are preferred, even mandated by organizations/specifications such as UL and CE.
2007-03-16 12:36:17 · answer #2 · answered by Gary H 6 · 0⤊ 0⤋
Film caps and discs are mica and tantalum.
Tantalum are polarized and mica are not.
2007-03-16 12:17:35 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋