Capacitor Code Value Calculator

Capacitor Value Formula:

\[ C = AB \times 10^C \, \text{pF} \]

First Digit (A):

Second Digit (B):

Multiplier (C):

Tolerance Code:

Capacitance Value:

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1. What is a Capacitor Code Value Calculator?

Definition: This calculator decodes the numerical markings on ceramic and other capacitors to determine their capacitance value and tolerance.

Purpose: It helps electronics engineers, technicians, and hobbyists understand capacitor values when working with electronic circuits.

2. How Does the Calculator Work?

The calculator uses the standard capacitor code formula:

\[ C = AB \times 10^C \, \text{pF} \]

Where:

\( AB \) — First two digits of the code
\( C \) — Multiplier (third digit)
Result is in picofarads (pF)

Explanation: The first two digits form the significant figures, and the third digit represents the power of ten multiplier.

3. Importance of Capacitor Code Reading

Details: Correctly interpreting capacitor codes ensures proper component selection for circuit design, repair, and maintenance.

4. Using the Calculator

Tips: Enter the three-digit code (first two digits and multiplier) and select the tolerance code (letter). The calculator will display the capacitance value with tolerance.

5. Frequently Asked Questions (FAQ)

Q1: What does a code like "104" mean?
A: 104 means 10 × 10^4 pF = 100,000 pF or 100nF or 0.1μF.

Q2: How do I read small ceramic capacitors?
A: They typically use a 3-digit code where the first two digits are significant figures and the third is the multiplier.

Q3: What if my capacitor has only two digits?
A: Two-digit codes typically represent the value directly in pF (e.g., "47" means 47pF).

Q4: What are common tolerance codes?
A: Common codes: J (±5%), K (±10%), M (±20%), Z (+80/-20%).

Q5: How do I calculate larger values (μF)?
A: The calculator shows pF. Divide by 1,000,000 to get μF (e.g., 1,000,000pF = 1μF).