100 Capacitor Code: Understanding the Markings and Values
Capacitors are an essential component in electronic circuits, and understanding their markings and values is crucial for designing and building a functional circuit. One of the most common types of capacitors is the 100 capacitor code, which is used to denote the capacitance value, tolerance, and voltage rating of a capacitor.
What is the 100 Capacitor Code?
The 100 capacitor code is a three-digit code used to mark capacitors with a capacitance value of 100 pF or less. The code consists of two digits followed by a letter, which represents the capacitance value, tolerance, and voltage rating, respectively.
Breaking Down the Code
First Two Digits: Capacitance Value
The first two digits of the code represent the capacitance value in picofarads (pF). The digits are the first two significant digits of the capacitance value, with the third digit being implied. For example:
- 10 = 10 pF
- 22 = 22 pF
- 47 = 47 pF
Third Digit (Letter): Tolerance and Voltage Rating
The third digit of the code is a letter that represents the tolerance and voltage rating of the capacitor. The most common letters used are:
- J: ±5% tolerance, 100 V rating
- K: ±10% tolerance, 100 V rating
- M: ±20% tolerance, 100 V rating
- N: ±30% tolerance, 100 V rating
- Z: +80% to -20% tolerance, 100 V rating
- X: ±2.5% tolerance, 250 V rating
- Y: ±1% tolerance, 250 V rating
Examples of 100 Capacitor Codes
- 103J: 10,000 pF (10 nF) capacitor with ±5% tolerance and 100 V rating
- 221K: 220 pF capacitor with ±10% tolerance and 100 V rating
- 472M: 4,700 pF capacitor with ±20% tolerance and 100 V rating
Conclusion
Understanding the 100 capacitor code is essential for selecting the right capacitor for your electronic circuit. By breaking down the code, you can easily determine the capacitance value, tolerance, and voltage rating of a capacitor, ensuring that your circuit functions as intended.
