Four views of the TO-220 package. Front view of the TO-220 package. Rear view of the TO-220 package.
The TO-220 is a type of encapsulation of electronic devices, commonly used in transistors, voltage regulators and various integrated circuits. The TO-220 package usually has three legs, although there are also two, four, five and even seven legs. A notable feature of this type of encapsulation is the metal back, which has a hole used to mount the device on a dissipator. The components that have a TO-220 package can handle higher potencies than those that are built on TO-92 packages. Most well-known components that use this encapsulation
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