Polystyrene film capacitors are highly regarded by the audiophile community for their low distortion factor, which makes these capacitors really shine in audio applications. Polystyrene capacitors are often used as replacements for ceramic and mica capacitors in audio circuits. However this type of capacitor is not limited to only audio applications, it’s perfect for any application that requires a through hole high tolerance capacitor. Polystyrene as a dielectric has many positive properties which include a low dielectric absorption, low distortion, low leakage, high insulation, and excellent temperature stability. Polystyrene film capacitors are available in both radial and axial leads. However the axial lead style is much more popular than the radial lead style. Polystyrene capacitors are a excellent choice for applications like point to point wiring or PCB(Printed Circuit Board) applications.
|Polystyrene Dielectric Properties|
|Dielectric Constant||2.5 - 2.6|
|Dielectric Strength||19.7 MV/m|
|Loss Tangent||0.0001 at 100MHz
0.00033 at 3GHz
Identifying the voltage of a polystyrene film capacitor is very simple. All you have to do is just take a look at the color of the band on the capacitor. Follow the color code shown in the images below:
33VDC = Blue Band
63VDC = Yellow Band
160VDC = Red Band
630VDC = Black Band
Note: not all polystyrene film capacitors are color coded, some of them just have plastic sleeves with printed values on their cases.
An example: PS21-.033-75-5
|Dielectric||Case Style||Size Class||Capacitance (MFD)||Voltage Rating||Tolerance|
2. Case Style
3. Size Class
Capacitance is expressed in microfarads(MFD), use as many digits as required.
5. Voltage Rating
The voltage rating is expressed in VDC.
Tolerance is expressed in a percentage.
An example: SXK139
2. Capacitance Tolerance
Capacitance is expressed in picofarads(pF), the first digit denotes the number of zeros after the decimal point. The follwing digits are the actual value.
An example: 704C1NM103PF251SX
|Dielectric||Case Size||Capacitance||Tolerance||Voltage||Packaging||Lead Type|
2. Case Size
Click here to view 704C1 case sizes
First two digits represent significant figures and the last digit indicates number of zeros to follow.
Voltage at 85°C
7. Lead Type
Whether the project is a preamplifier, power amp or any other piece of equipment polystyrene capacitors can offer a sonic improvement over the existing capacitors in your equipment. Doesn’t your audio equipment deserve the best quality components? We at Tedss.com pride ourselves on our vast selection of Polystyrene Film Capacitors.
Polystyrene Film Capacitors can be found in communication/audio equipment such as guitar amplifiers, power amps, preamps and CATV amplifiers.