Tantalum Capacitor Code

4 min read Jun 26, 2024
Tantalum Capacitor Code

Tantalum Capacitor Code: A Comprehensive Guide

Tantalum capacitors are a type of electrolytic capacitor that uses tantalum metal as the anode. They are known for their high capacitance, small size, and low equivalent series resistance (ESR). Tantalum capacitors are widely used in electronic circuits, particularly in applications requiring high reliability and stability.

Understanding Tantalum Capacitor Code

The code on a tantalum capacitor is a series of letters and numbers that provide important information about the component's characteristics. The code typically consists of three parts: the capacitance value, the tolerance, and the voltage rating.

Capacitance Value

The capacitance value is usually represented by a three-digit code. The first two digits represent the significant figures, while the third digit represents the multiplier.

  • The first two digits can be any value between 01 and 99.
  • The third digit is a multiplier that ranges from 0 to 9, with the following values:
    • 0 = ×1
    • 1 = ×10
    • 2 = ×100
    • 3 = ×1,000
    • 4 = ×10,000
    • 5 = ×100,000
    • 6 = ×1,000,000
    • 7 = ×10,000,000
    • 8 = ×100,000,000
    • 9 = ×1,000,000,000

For example, a capacitance value of 104 would represent a capacitance of 100,000 picofarads (100 nF).


The tolerance of a tantalum capacitor is represented by a single letter or symbol.

  • F: ±1%
  • G: ±2%
  • J: ±5%
  • K: ±10%
  • M: ±20%
  • Z: +80% -20%

Voltage Rating

The voltage rating of a tantalum capacitor is represented by a single number or range of numbers.

  • For example, a voltage rating of 16V would represent a maximum operating voltage of 16 volts.
  • A voltage rating of 10-20V would represent a maximum operating voltage range of 10 to 20 volts.

Example of a Tantalum Capacitor Code

Let's take an example of a tantalum capacitor code: 104M16V.

  • Capacitance Value: 104 = 100,000 picofarads (100 nF)
  • Tolerance: M = ±20%
  • Voltage Rating: 16V = maximum operating voltage of 16 volts

Therefore, this capacitor has a capacitance value of 100 nF, a tolerance of ±20%, and a maximum operating voltage of 16 volts.


In conclusion, understanding the code on a tantalum capacitor is crucial for selecting the right component for your electronic circuit. By deciphering the capacitance value, tolerance, and voltage rating, you can ensure that your circuit operates reliably and efficiently. Remember to always check the datasheet and manufacturer's specifications to ensure that the capacitor meets your specific requirements.