C4 ELECTROSTATIC / NON-ELECTROLYTIC CAPACITORS
C5 ELECTROLYTIC CAPACITORS
C6 VARIABLE CAPACITORS
C7 MATERIAL/TYPE CHARACTERISTICS
Choosing the right capacitor is a difficult task and a multitude of SMD types hasn’t made it any easier. e-PassiveBook should help you find objective information about the advantages and disadvantages of the different types of capacitors. Moreover, there are relatively obscure characteristics in some types which may be dangerous in one application but quite harmless in another. e-PassiveBook describes such characteristics in such a way that you should be able to adapt the choice of component to that information and help you to derive advantage from dearly-bought experiences.
We reproduce here some of the most common abbreviations on occurring concepts and references concerning capacitors. For the sake of clarity sometimes the explanations are repeated in corresponding part.
ε Dielectric Constant, Permittivity
@ at (ex: @25°C = at 25°C)
AC Alternating Current
CC Chip Carrier
D/A Digital to Analog
DA Dielectric absorption
DC Direct Current
DF Dissipation Factor / Tan
DIP Dual-in-line Package (also DIL = Dual-In-Line)
DPA Destructive Physical Analysis
ESD Electrostatic Discharge
GMV Guaranteed Minimum Value
HF High frequency
IR Insulation Resistance
Q The Capacitor’s Factor of Merit (=1/tan)
RFI Radio Frequency Interference
RH Relative Humidity
R.M.S Root mean square
RT Room Temperature (» 23 °C).
SIP Single-in-line Package (also SIL = Single-In-Line).
SM Surface Mount
SMD Surface Mount Devices
SMPS Switched-Mode Power Supplies
SMT Surface Mount Technology.
Tan δ Dissipation Factor
TC Temperature Coefficient
TCh Temperature Characteristic
TCE Temperature Coefficient of Expansion
X & Y A kind of Interference Suppression Capacitors used in Mains applications
BS British Standards
BSI British Standard Institution
CECC Cenelec Electronic Components Committee.
DIN Deutsche Industrie-Normen.
IEC International Electrotechnical Commission
JIS Japanese Industrial Standards
MIL Military Specification / USA; also applied by
other countries with this type of specifying.
UL Underwriters´ Laboratories
VDE Verband Deutscher Elektro-techniker
KC Polycarbonate with foil electrodes
KP Polypropylene with foil electrodes
KT Polyester with foil electrodes
MK Metallized plastic films
MKC Metallized polycarbonate
MKI Metallized Polyphenylene Sulfide
MKP Metallized polypropylene
MKT Metallized polyester
MP Metallized paper
PEN ”Polyester” / Polyethylene Naphtalate
PET Polyester / Mylar (Polyethylene Terephtalate)
PPS Polyphenylene Sulfide
PTFE Teflon (Polytetrafluor Ethylene)
PVDF Polyvinylidene fluoride
rev.1.: P-O.Fagerholt., CLR Passive Components Handbook
© European Passive Components Institute