Decoding Capacitance Diagram
Decoding Ceramic Disc Capacitors
Ceramic Disc Capacitors have labels and markings that identify their characteristics.
Operating Temperature: The black top indicates its industrial temperate operating range (-25°C/-13°F to 85°C/185°F). The industrial temperature range is -25°C/-13°F to +85°C/185°F, and the normal range is 10°C/50°F to 65°C/149°F.
Capacitance: To read the capacitance, you must decode the center value code, which is a set of four alphanumeric characters: three digits and one letter. The first and second characters, both digits, symbolize the actual value. The third character is a digit symbolizing a multiplier where 10 is raised to the power of that digit. The fourth character is a letter symbolizing the tolerance code. The capacitance is measured in picofarads (pF).
Voltage: An underline indicates 50V – 100V, and no underline indicates 500V.
Capacitor Tolerance Codes
C = ±0.25 pF
D = ±0.5 pF
E = ±1 pF
G = ±2%
J = ±5%
K = ±10%
L = ±15%
M = ±20%
N = ±30%
Z = +80% to 20%
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