CDS15CD070DO3

Series:	CDS15
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	7pF
Tolerance:	±0.5pF
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	Radial
Lead Spacing:	0.234" (5.90mm)
Features:	General Purpose
Size / Dimension:	0.430" L x 0.140" W (10.90mm x 3.60mm)
Height - Seated (Max):	0.280" (7.10mm)

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Mica and PTFE Capacitors

Mica and PTFE Capacitors offer a unique combination of electrical characteristics including extremely high volumetric efficiency, outstanding stability, very low leakage and excellent high frequency characteristics. CDS15CD070DO3 capacitors in particular, belong to a range of capacitors produced using a complex mixture of mica and the high dielectric polymer Polytetrafluorethylene (PTFE).

Application Field and Working Principle

Mica and PTFE capacitors are generally used for applications which require non-polarised capacitors with high insulation resistance, high stability and long life. The CDS15CD070DO3 capacitors are particularly suitable for applications such as AC line input filters, high voltage DC link capacitors, DC link smoothing capacitors, high voltage inverters, PWM switching circuits and other applications which require high stability and non-polarised operation.The CDS15CD070DO3 capacitors are constructed with a special mica-PTFE-based dielectric, which has the advantage of providing a very low dielectric loss, high peak current rating, high insulation resistance, and low dielectric absorption. The dielectric is surrounded by two metal-foil electrodes, which are bonded together with conductive epoxy. This makes for a very robust capacitor which has excellent thermal stability and high AC and DC voltage ratings. The working principle of a CDS15CD070DO3 capacitor is simple. The capacitor acts as a filter and stores electrical energy between two conductive metal layers, allowing higher voltage levels to be stored across the capacitor than those present at the input. This stored energy can then be used to help reduce high frequency noise and ripple in AC signals, as well as increase the power factor of the system.

Benefits

Mica and PTFE capacitors are known for their high volumetric efficiency, excellent stability, low leakage and excellent high frequency characteristics. They are also capable of providing excellent peak current ratings, high insulation resistance and low dielectric absorption. Additionally, they tend to have longer operational lifetimes than other capacitor types.Due to their combination of electrical characteristics, mica and PTFE capacitors are well-suited for use in a variety of applications including AC line input filters, high voltage DC link capacitors, DC link smoothing capacitors, high voltage inverters, PWM switching circuits and other applications where non-polarised operation and or high stability is required.

Drawbacks

The main drawback of mica and PTFE capacitors is their relatively high cost, which can limit their use in some applications. They also tend to be slightly less efficient than some other capacitor types, such as electrolytic capacitors. Additionally, they may require a longer than usual “break in” period in order to achieve their optimal performance.

Conclusion

Mica and PTFE capacitors, such as the CDS15CD070DO3, offer a unique combination of benefits and drawbacks which makes them suitable for a variety of applications. They provide excellent stability, low leakage, high volumetric efficiency, and excellent high frequency characteristics. They also have a relatively high cost, and may require a longer than usual break in period to achieve their optimal performance. They are well-suited for use in AC line input filters, high voltage DC link capacitors, DC link smoothing capacitors, high voltage inverters, PWM switching circuits and other applications which require high stability and/or non-polarised operation.

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