TO-220

TO-220 front view^[1]

TO-220 back view^[1]

The TO-220 is a style of electronic package used for high-powered, through-hole components with 0.1 inches (2.54 mm) pin spacing. The "TO" designation stands for "transistor outline".^[2] TO-220 packages have three leads. Similar packages with two, four, five or seven leads are also manufactured. A notable characteristic is a metal tab with a hole, used to mount the case to a heatsink,^[3] allowing the component to dissipate more heat than one constructed in a TO-92 case. Common TO-220-packaged components include discrete semiconductors such as transistors and silicon-controlled rectifiers, as well as integrated circuits.

^ ^a ^b Cite error: The named reference TO-220_Spec was invoked but never defined (see the help page).
^ "Types of Semiconductor Packaging". RS Malaysia. Archived from the original on 2012-03-06. Retrieved 2024-07-09.
^ Pandya, Kandarp (2003-12-01). "Torque Recommendations for TO-220 Devices" (PDF). Vishay Intertechnology.

[TO-220_Spec-1] Cite error: The named reference TO-220_Spec was invoked but never defined (see the help page).

[2] "Types of Semiconductor Packaging". RS Malaysia. Archived from the original on 2012-03-06. Retrieved 2024-07-09.

[3] Pandya, Kandarp (2003-12-01). "Torque Recommendations for TO-220 Devices" (PDF). Vishay Intertechnology.

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