Thin-Trim Capacitors Johanson Manufacturing / Knowles Thin-Trim Capacitors are ideal for applications where size and performance are critical. These single-turn capacitors exhibit impressive electrical characteristics and can be used for frequencies up to 2GHz. The thin-trim capacitors operate at >,104 MΩ insulation resistance and -55°C to 125°C temperature range. These single-turn capacitors are ideally used in medical devices, cordless and cellular phones, RF amplifiers, and broadband wireless LANs.