Types of Tantalum Capacitor Packaging

Types of Tantalum Capacitor PackagingTantalum capacitors are manufactured with two varieties of packaging. The first type is the SMD packaging. Surface mountable tantalum capacitors are manufactured in the following way. The components of the cathode are connected to the cathode terminal with the help of silver epoxy resin. The components of the anode are soldered onto the supporting electrode. The stringer is cut off. The components are glued together with special silver glue. The chip is then moulded with the help of epoxy resin. This ensures the optimum capacitor geometry. It can then be easily mounted onto a circuit board. A code is printed on the moulded capacitor. It contains the information on its rated capacity and voltage. After that, such critical parameters as its capacity, leakage current and equivalent series resistance are tested. The second variety of capacitor packaging is manufactured in the following way. The anode conductor is soldered to the lead of the anode and cut of from the stringer. The carrier terminal of the cathode is soldered to the silver plated body of the capacitor while the latter is being dipped into a soldering bath. Then the capacitor is filled with epoxy encapsulant. It is placed inside a drying oven to solidify. Similarly to the previous case, it is then marked and all the parameters are tested.It is the capacitors with SMD packaging that manifest the primary advantages of tantalum capacitors. At the same time they are more compact and durable.

Category:

Science & Technology

Tags:

• capacitor
• case
• SMD
• surface mount
• tantalum