Silver Mica 500Pf@ 500V

Nice assortment of caps, this is the 3rd box I've bought.

Great addition to my Electronics Laboratory Bench.

Good bargain for the capacitors.

Good selection and quality of components.

The BOJACK Metallized Polypropylene Film DC Capacitor Assortment Kit includes 15 different capacitor values, totaling 150 pieces. Designed for high-voltage DC circuits, this assortment covers a wide range of capacitance (400V: 0.01uF 0.56uF; 630V: 0.001uF 0.068uF). Tested in various electronics projects and repairs, these capacitors performed reliably in audio, power supply, and filtering applications.Pros: Wide Value Range: Covers a variety of capacitance values, making it suitable for diverse projects and repairs. High Voltage Ratings: 400V and 630V ratings ensure compatibility with high-voltage DC circuits. Durable and Reliable: Metallized polypropylene construction offers excellent stability, low loss, and high insulation resistance. Well-Organized Packaging: Each value is neatly separated and labeled, simplifying selection and storage. Cost-Effective Kit: Provides a comprehensive set of components at an affordable price.Cons: Limited Capacitance Range for Low-Voltage Applications: Not ideal for projects requiring higher capacitance at lower voltage ratings. Short Leads: Leads are adequate for PCB work but may feel short for breadboarding or manual soldering in larger circuits.Performance and Usability:During testing, the capacitors demonstrated excellent stability and low loss in filtering and timing circuits. Their high insulation resistance ensured reliable performance in high-voltage scenarios. The labeled packaging streamlined the selection process, saving time in assembly work. However, the short leads required careful handling when used outside of PCB-mounted applications.Comparison:Compared to ceramic or electrolytic capacitors, the BOJACK Metallized Polypropylene Film Capacitors excel in stability, durability, and low noise. While other kits may offer broader ranges of capacitance or voltage, this assortment specializes in high-voltage DC applications, making it more focused for such needs.Who Is This For?:This kit is perfect for hobbyists, repair technicians, and professionals working on high-voltage DC circuits, audio equipment, or power supplies. It’s especially suitable for those needing reliable, low-loss capacitors for precise applications.Conclusion:The BOJACK Metallized Polypropylene Film DC Capacitor Assortment Kit is a reliable and comprehensive set for high-voltage electronics work. While the lead length may be a minor limitation, the range of values, quality of components, and organized packaging make it an excellent addition to any electronics toolkit.

We've had these in the workshop for nearly a year, they're alright for some very basic and low spec applications. But don't think of using them in delicate circuits. We've seen tube circuits fail, tremolos stop oscillating, and many other oddities of voltage or bias because of these very poor film caps. The hardest part is they will seemingly work somewhat within a circuit while working just poorly enough to impede some functions. We've finally stopped using them completely and I wouldn't recommend anyone waste their time with them - just put together a nice name brand kit for yourself through a reliable parts dealer.