How do you read a SMD tantalum capacitor?

How do you read a SMD tantalum capacitor?

SMD tantalum capacitor markings The markings on SMD tantalum capacitors normally consist of three numbers. The first two form the significant figures, and the third is the multiplier. Values are in picofarads. Therefore the SMD tantalum capacitor shown below has a value of 47 x 105pF, which works out to be 4.7µF.

How are tantalum capacitors marked?

Leaded tantalum capacitor markings: Leaded tantalum capacitors generally have their values marked in microfarads, µF. Typically the markings on a capacitor may give the figures like 22 and 6V. This indicates a 22µF capacitor with a maximum voltage of 6V.

How do I identify a SMD capacitor?

Often a SMD device will have it’s value encoded in the form of numbers and letters, made by a laser marking system. 4.7U indicates a 4.7 microfarad part while 3.3 P is the marking for a 3.3 picofarad capacitor.

What is SMD tantalum capacitor?

A tantalum electrolytic capacitor is an electrolytic capacitor, a passive component of electronic circuits. Tantalum is a conflict mineral. Tantalum electrolytic capacitors are considerably more expensive than comparable aluminum electrolytic capacitors. Tantalum capacitors are inherently polarized components.

How do you read capacitor value codes?

If you have a capacitor that has nothing other than a three-digit number printed on it, the third digit represents the number of zeros to add to the end of the first two digits. The resulting number is the capacitance in pF. For example, 101 represents 100 pF: the digits 10 followed by one additional zero.

How do you decode a capacitor?

Read the capacitance of smaller bodied capacitors as two or three numbers.

  1. Read two digit numbers as being in picoFarads (pF).
  2. Read three digit numbers as a base capacitance value in picoFarads and a multiplier.
  3. Use a third digit of 0 through 5 to place the corresponding number of 0s behind the base value.

What is the symbol of tantalum?


Tantalum is a chemical element with the symbol Ta and atomic number 73. Previously known as tantalium, it is named after Tantalus, a villain from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.

How do you read a capacitor code?

How do I know if my SMD capacitor is bad?

How to Check for Bad SMD Capacitors

  1. Look for any capacitors showing signs of discoloration or charring. Sometimes a failure is obvious.
  2. Test capacitors in the circuit with a multimeter set to measure resistance.
  3. Remove the capacitor from the circuit to test it.

What color are SMD capacitors?

SMD capacitor can be identified based on the color of ceramic body material. The capacitors like NPO and COG ceramics are generally available in white color. They have less capacitance that ranges from 1pF to 10pF. The capacitors like X7R and X5R ceramics are generally available in light brown.

How do I know what SMD components I have?

The Types of SMD Components Its first and second digits are significant digits, and the third digit indicates the multiple of 10, such as “103” indicates “10KΩ”, “472” is “4700Ω”. The letter “R” means a decimal point, for example, “R15” means “0.15Ω”.

When to use tantalum capacitor?

Why and when to use tantalum capacitors? Tantalum is used to create small sized capacitors with ‘large’ capacitance. Compared to other materials the oxide layer can be quite thin. So for all applications where pcb space is limited (e.g. mobile phones) they are the to go to type of capacitor when ceramic doesn’t cut it anymore.

What are tantalum capacitors?

Tantalum powder is used in capacitors to allow for a very thin dielectric layer, providing high capacitance values in smaller case sizes. Vishay offers surface mount and through-hole tantalum capacitors for use in automotive, military, portable consumer, medical and many other applications.

Is a capacitor conductive?

The conductive metal plates of a capacitor can be either square, circular or rectangular, or they can be of a cylindrical or spherical shape with the general shape, size and construction of a parallel plate capacitor depending on its application and voltage rating.

What is a polymer capacitor?

A polymer capacitor, or more accurately a polymer electrolytic capacitor, is an electrolytic capacitor (e-cap) with a solid electrolyte of a conductive polymer.