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Our Price: $0.50 More Info Polystyrene capacitors have been long time favorite capacitor of audiophiles and high-end audio manufactures. All film capacitors use a thin plastic film as the dielectric (or insulator), but what separates each capacitor type is the material used as the dielectric. Alibaba.com offers 1,066 polystyrene capacitors products. I wish I could give you a direct answer, but we would require to know where the cap is uses in what setting, etc. The demise of polystyrene capacitors began in 1990 when the suppliers felt that thin-sheet capacitor dielectric material was too much effort for such a small part of their product line. As a result of their construction and limited use, polystyrene capacitors are not widely used … 5 for $0.50. 1 Lead-polystyrene Film High Voltage Capacitor CB80 30KV 3000PF 4 Marx generator $4.35 15 X .01uF 10000pF (103) @ 63v (1%) axial POLYSTYRENE FILM/FOIL AUDIO CAPACITOR Further development led to the substance we now call polystyrene. I'm replacing the capacitors in a very old tape recorder (1957) and I'm ok with the electrolytics but there are 4 with values 0.001 (x2), 0.002 and 0.005 uF i.e. Polystyrene capacitor construction does not lend itself to surface mount technology and accordingly polystyrene capacitors tend to be used for leaded applications. Polystyrene capacitor construction does not lend itself to surface mount technology and accordingly polystyrene capacitors tend to be used for leaded applications. 12V-500V Low Voltage Ceramic Disc Capacitors, Surface Mount SMT Electrolytic Capacitors, Axial Non-Polarized Electrolytic Capacitors. The best capacitor types for audio circuits are polystyrene and polypropylene. After a few days, it thickened into a jelly called Styroloxyd. A second alternative is the Polystyrene Substitute Combination Dielectric (PSCD) film-foil series which is a hybrid capacitor that is stable in the 0°C to +50°C range and similar in size to the original polystyrene designs. Polycarbonate capacitor encapsulation. If you have any questions or good suggestions on our products and site, or if you want to know more information about our products, please write them and send to us, we will contact you within one business day. Around the time of World War II, polystyrene was combined with isobutylene, and the result was foam polystyrene. Polystyrene can be solid or foamed. Polystyrene Film capacitors are very highly regarded due to their most desirable electrical characteristics such as exceptionally high insulation, low leakage, low dielectric absorption, low distortion and excellent temperature stability. The end is an epoxy resin specially formulated to bond withthe Mylar outer wrap forming a moisture resistant seal. Polystyrene are becoming increasingly harder to obtain (often referred to as Styroflex or Styro in Europe) but hificollective have the full range at 630V dc from a source that supply the major players in hi-fi. First, there is a combination film capacitor that takes the temperature coefficient of two different dielectrics to provide a near 0% change between 0°C thru +50°C. Change Cd3 and Cd17 to bipolar electrolytics with 0.1 uf polypropelene bypasses. With their excellent electrical characteristics. Any amp using them in the signal path will benefit by from the substitution of premium polystyrene or polypropylene types. A second alternative is the Polystyrene Substitute Combination Dielectric (PSCD) film-foil series which is a hybrid capacitor that is stable in the 0°C to +50°C range and similar in size to the original polystyrene designs. £2.00 (inc VAT £2.40) 3300pF 160V Polystyrene Axial Capacitor. Electrocube’s 730D Series capacitor is a metallized capacitor and the size is extremely small in comparison to the original polystyrene film and foil design. My favourites, and the most expensive, are the yellow LCR metalised polypropylene axial (tubular) types. Polystyrene film capacitors are used for applications where high reliability and precision is required. Polystyrene Capacitors. .0022uF 160V 10% Polystyrene Capacitor ERO Roederstein 1838-222/164. But, if they are hard to get, and the particular circuit configuration doesn't really need one, don't bother. They’ve got the kinds of electrical characteristics that make audiophiles perform happy dances in front of their circuits. But as of 2012, only one manufacturer markets a specific acrylate SMD film capacitor, as an X7R MLCC replacement. This type of capacitor is not that new: production started in the 1980s and since then, they have been used in many applications including server motherboards and computer graphic accelerator cards. Over 1,000,000 Electronic Components, Parts, and Tools in Stock. 0.42" diameter x 0.86" long. Typically the capacitor may be contained within an epoxy moulded encapsulation, but other popular alternatives include a metal enclosure or … There was an attempt to develop a metallized version of polystyrene. Read more. Audio circuits can be that sensitive.--edit- … A wide variety of polystyrene capacitors options are available to you, such as hight voltage, general purpose, and air conditioner. Posted: Jan Tue 10, 2017 4:46 am . Polystyrene caps have a lot of "favorable properties", so there is really no reason not to use one, especially if they were there in the first place and you can easily get a replacement. A low cost capacitor that offers a broad range of values starting from 10pF up to 10000pF. Polystyrene (PS) / ˌ p ɒ l i ˈ s t aɪ r iː n / is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. About 98% of these are capacitors, 1% are resistors. In the early to mid-1950s, insulating sheet material was developed and, thus, the use in film and foil capacitor designs was introduced. The encapsulation of the polycarbonate capacitor is important, and a variety of different types can be used. Our Price: $0.60 More Info. Polystyrene Film capacitors are very highly regarded due to their most desirable electrical characteristics such as exceptionally high insulation, low leakage, low dielectric absorption, low distortion and excellent temperature stability. The polystyrene capacitor was the device of choice for precision-tuned circuits due to the extreme stability in the 0°C thru +50°C range as well as long-term stability. A wide variety of polystyrene film capacitors options are available to you, such as general purpose, hight voltage, and power. Excellent stability Metal Clad 2.7nF (2700pF) Item Number: CPS2N7. The major drawback of this dielectric was the maximum operating temperature of +85°C, the glass transition temperature of ~95°C, and a fluid temperature of +100°C, making applications for this device limited. We guarantee that your information will not be divulged to the third party. This makes the polystyrene cap the first choice for all critical timing circuits, such as VCO and VCF timings, and for all Sample / Hold circuits. With lead free I would be very worried Post subject: Replacing mica capacitor with ceramic or polystyrene. But, there are alternatives. Normally, their tolerance is 5% to 10% but high precision polystyrene capacitors are also available with tolerances of 1% and 2%. Capacitor manufacturers placed large onetime orders to satisfy the demand for this precision-type of dielectric material. This type of capacitor was only available as a film and foil construction. Polystyrene capacitors are world renown for their incredibly stability and fabulous tone. With tolerances as low as just 2%, polystyrene capacitors are great for a wide variety of applications. NPC 4000J axial polystyrene capacitor. Polystyrene Capacitors are ideal for use in tuner & equalization circuits where tolarance, capacitance stability and high reliability are required. Polystyrene capacitors are capacitors that have a dielectric made up of polystyrene. polystyrene capacitor . Unless the polystyrenes are defective leave them alone. They come only in low values, usually 10pF to 47nF. 787pf @160v 3% size is 3mm diameter x 12mm long. Many customers have already successfully made the move. A company in Germany began manufacturing polystyrene in 1931 in pellet form. Polystyrene is the first choice, but are only available in values up to .001 uF. pfc Precision Film Capacitors and Standards. The higher capacitance may do a marginally better job of removing 60-cycle AC line "hum" from the audio output of the radio. Polystyrene caps cannot tolerate high temperatures (85 degrees Celsius max. Now that the worldwide stock has been diminished or depleted, what are the options? There are a few modern types that will cover most requirements. Polystyrene was developed by a German apothecary in 1839 from the resin of the American sweet gum tree. The main specification advantage of polystyrene is its low dielectric absorption, which only really shows up in professional instrumentation-type sample-and-hold applications. Electrocube’s 730D Series capacitor is a metallized capacitor and the size is extremely small in comparison to the original polystyrene film and foil design. Depending on the application, environment and specifications, there are viable – even better – alternatives for replacing polystyrene capacitors. Polystyrene capacitors have been long time favorite capacitor of audiophiles and high-end audio manufactures. Xicon polystyrene Film Capacitors are available at Mouser Electronics. Obviously, whatever replacement capacitor you use will not be identical to the original (which is probably good news!). New Member: Joined: Dec Sun 04, 2016 2:18 am Posts: 24 I need to replace a mica capacitor but can't find the size I want at a decent price. It is an inexpensive resin per unit weight. For example, when replacing a 10-mfd electrolytic capacitor in the radio's power supply, it is OK to use a 20-mfd or 22-mfd replacement. General-purpose polystyrene is clear, hard, and rather brittle. Polystyrene Capacitor Axial 160VDC Tolerance +/- 3%. Excellent stability 3.3nF (3300pF) 10%, 5% and 1% Precision Tolerance. Polystyrene - 113-207 etc. In most instances polystyrene capacitors can be used as a direct substitute for silver mica and/or ceramic disc capacitors. List of Polystyrene Capacitors Product Specs, Datasheets, Manufacturers & Suppliers On sale are PSA Polystyrene at 630 volts. Alibaba.com offers 1,079 polystyrene film capacitors products. Polystyrene Capacitor Axial 160VDC Tolerance +/- 1%. Read the attached landmark capacitor article by Walt Jung and Richard Marsh on capacitors. Polystyrene film capacitors are gone. Polystyrene capacitors were one of the few components easily damaged by a competent solderer with 60/40 solder if the iron was the wrong size or the pcb/leads a bit tarnished. We stock OEMs, LCRs and Xicons. The size is comparable to the original polystyrene and foil design. However, due to the low melting point of the dielectric, it was unsuccessful. Polystyrene caps were a dying breed until they found a home in hi-fi. They are better than polypropelene and the ceramic caps you propose as alternatives. This isn't an answer to your questions, but here's a great video that describes different types capacitor and their uses. They are ideal for use in commercial, industrial and measuring instruments. The type ST12 capacitor is in a "wrap and The outer wrap is an electrical grade of Mylar adhesive tape. 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