Specialist audio capacitors, manufactured in the US by Arizona Capacitors, now part of Electro Technik Industries, are now available in the UK from Aspen Electronics.
The C50309 range of paper and polyester dielectric, oil-filled capacitors, is designed for use in audio equipment such as pre-amplifiers, amplifiers and loudspeaker crossover networks.
Components in the range are rated for operation at 600V DC and standard capacitance tolerance is ±10%. Insulation resistance is quoted at 6000 megohm-microfarads minimum, while the dissipation factor is less than 1% measured at 120Hz. The operating temperature covers the full military range from -55 to 125°C at full rated voltage.
A typical capacitor in the range is the C50309-6224K offering a capacitance of 0.22µF +/-10%. The hermetically-sealed tubular brass case diameter is 17mm, and overall length is 47.6mm. The 20awg leads are solder-coated oxygen free solid copper.