**Tantalum Capacitor Code Chart: Unlocking the Secrets of Capacitor Markings**

When working with electronic circuits, selecting the correct capacitor is crucial for optimal performance and reliability. Tantalum capacitors, in particular, have gained popularity due to their high capacitance, low equivalent series resistance (ESR), and compact size. However, deciphering the cryptic codes and markings on these capacitors can be daunting. Worry no more! This article will guide you through the tantalum capacitor code chart, enabling you to easily identify and choose the right capacitor for your project.

**Understanding Tantalum Capacitor Markings**

Tantalum capacitor markings typically consist of a combination of letters and numbers that provide crucial information about the capacitor's characteristics. The most common markings include:

**Capacitance Value**

The capacitance value is usually expressed in microfarads (μF) and is denoted by a three-digit code. The first two digits represent the capacitance value, while the third digit represents the multiplier.

Code | Capacitance Value (μF) |
---|---|

106 | 10 μF |

225 | 22 μF |

476 | 47 μF |

**Voltage Rating**

The voltage rating is denoted by a single letter or a combination of letters and is usually measured in volts (V).

Code | Voltage Rating (V) |
---|---|

A | 10 V |

B | 16 V |

C | 20 V |

D | 25 V |

E | 35 V |

F | 50 V |

**Tolerance**

The tolerance value represents the percentage of allowable deviation from the capacitance value.

Code | Tolerance (%) |
---|---|

J | ±5% |

K | ±10% |

M | ±20% |

Z | ±80% |

**Temperature Rating**

The temperature rating is denoted by a single letter and indicates the maximum operating temperature.

Code | Temperature Rating (°C) |
---|---|

V | 125°C |

W | 150°C |

X | 175°C |

**Tantalum Capacitor Code Chart Example**

Let's break down a typical tantalum capacitor code:

**105A475Z**

**105**: Capacitance value = 10 μF (first two digits) × 10^5 (multiplier) = 10 μF**A**: Voltage rating = 10 V**475**: No specific meaning in this context**Z**: Tolerance = ±80%

This capacitor has a capacitance value of 10 μF, a voltage rating of 10 V, and a tolerance of ±80%.

**Conclusion**

Deciphering the tantalum capacitor code chart requires attention to detail and practice. By understanding the capacitance value, voltage rating, tolerance, and temperature rating markings, you'll be well-equipped to select the perfect capacitor for your electronic project. Remember to always double-check the specifications and follow the manufacturer's recommendations to ensure optimal performance and reliability.