d123
Advanced Member level 5
Hi.
I was looking into SMD capacitors (mainly thinking of timing in the range of seconds, not milliseconds), and from what I see the widest selection are:
Aluminium Electrolytic (dry)
Tantalum
Ceramic
All the good dielectrics seem to have a low capacitance range, or are very expensive indeed.
I really prefer PET/polyester for a lot of reasons (shame polystyrene are only small values due to size), not thrilled about Tantalum, much less ceramic for timing applications, so am a bit stuck on which way to go now moving from through-hole to more SMD-based circuits.
I have been reading that Polyphenylene Sulphide, Niobium Capacitors, PEN Film are all good choices.
Anyway, do I basically have to settle for Tantalum over the Aluminium Electrolytic dry types for timing applications? Recommendations welcome, thanks.
I was looking into SMD capacitors (mainly thinking of timing in the range of seconds, not milliseconds), and from what I see the widest selection are:
Aluminium Electrolytic (dry)
Tantalum
Ceramic
All the good dielectrics seem to have a low capacitance range, or are very expensive indeed.
I really prefer PET/polyester for a lot of reasons (shame polystyrene are only small values due to size), not thrilled about Tantalum, much less ceramic for timing applications, so am a bit stuck on which way to go now moving from through-hole to more SMD-based circuits.
I have been reading that Polyphenylene Sulphide, Niobium Capacitors, PEN Film are all good choices.
Anyway, do I basically have to settle for Tantalum over the Aluminium Electrolytic dry types for timing applications? Recommendations welcome, thanks.