Decode film capacitor codes instantly with this free Film Capacitor Code Calculator. Convert printed capacitor markings into capacitance, tolerance, and voltage values for electronics repair, PCB design, manufacturing, engineering, and education.
103H Film Capacitor (10 nF)
Decodes as 10 × 10^3 pF = 10,000 pF (10 nF) with a precision rating of H (±3% tolerance).
224K Polyester block (220 nF)
Decodes as 22 × 10^4 pF = 220,000 pF (220 nF = 0.22 µF) with standard K (±10% tolerance).
474J Power Filter (470 nF)
Decodes as 47 × 10^4 pF = 470,000 pF (470 nF) with standard high-efficiency J (±5% tolerance).
105M Mylar Coupling (1 µF)
Decodes as 10 × 10^5 pF = 1,000,000 pF (1 µF) with M (±20% tolerance) inside high-density audio setups.
Film capacitors utilize a thin polymer plastic film (such as polyester, polypropylene, or polycarbonate) as the dielectric, layered with thin metallic electrodes.
Unlike ceramic disk capacitors, film capacitors have superior self-healing properties, exceptionally low equivalent series resistance (ESR), and high voltage stability, making them the standard choice for AC circuit networks, audio crossovers, and power supplies.
The tolerance letter 'J' stands for a manufacturing deviation allowance of ±5% from the nominal capacitance rating.
Polypropylene caps have extremely low dielectric absorption, low dissipation factor, and minimum distortion profiles, preserving signal purity in acoustic speaker systems.
No, standard metalized polyester and film capacitors are non-polarized components. They can be safely wired in both AC and DC orientations.
The range represents the minimum and maximum boundaries of actual capacity. For example, a 100 nF capacitor with ±10% tolerance is guaranteed to measure between 90 nF and 110 nF.
Film Capacitor Code Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.