TO-206 COMPONENT PACKAGE
TO-206 Component Package
Date Published: | |
Last Modified: |
Overview
The TO-206
(Transistor Outline Package, Case Style 206) component package is a family of large through-hole metal can packages used for things such as transistors. There are variants with anywhere from 2 to 8 leads1.
Synonyms:
H03C
: What National Semiconductor calls theTO-206AA
2.TO-18
Variants:
TO-206AA
: The popular 3-lead variant. Also calledTO-18-3
.TO-206AB
: 3-lead with 1.90mm cap height. Also calledTO-46
.1TO-206AC
: 3-lead with 3.30mm cap height. Also calledTO-52
.1TO-206AF
: 4-lead. Also calledTO-72
.TO-71
: 8-leadTO-18
.
Common Uses
- Diodes (
TO-18-2
) - Transistors (
TO-18-3
)
Similar To:
TO-206AA (TO-18-3)
The TO-206AA
is the most common 3-lead version in the TO-206
family. It is also known by it’s older name as the TO-18-3
– or just ambiguously as the TO-18
. National Semiconductor called this package H03C
2. Transistors such as the 2N2222A BJT are available in this package.
![A photo of the TO-206AA (TO-18-3) from DigiKey[^digikey-2n2222a].](https://blog.mbedded.ninja/pcb-design/component-packages/to-206-component-package/to-206aa-to-18-3-photo-digikey.png)
A photo of the TO-206AA (TO-18-3) from DigiKey3.
The dimensions of the TO-206AA
are shown below:
![Dimensions for the TO-206AA (TO-18) component package from National Semiconductor (now Texas Instruments)[^ti-metal-can-packages].](https://blog.mbedded.ninja/pcb-design/component-packages/to-206-component-package/to-206-aa-to-18-3-lead-ti-h03c-dimensions.png)
Dimensions for the TO-206AA (TO-18) component package from National Semiconductor (now Texas Instruments)2.
References
Wikipedia (2021, Nov 19). TO-18. Retrieved 2023-06-12, from https://en.wikipedia.org/wiki/TO-18. ↩︎ ↩︎ ↩︎
National Semiconductor (now Texas Instruments) (1999, Aug). SNOA033 - Metal,Can,Packages - Metal Can Packages (TO-3/5/8/18/39/46/52/72). Retrieved 2023-06-12, from https://www.ti.com/lit/an/snoa033/snoa033.pdf. ↩︎ ↩︎ ↩︎
DigiKey. Central Semiconductor Corp 2N2222A PBFREE. Retrieved 2023-06-12, from https://www.digikey.com/en/products/detail/central-semiconductor-corp/2N2222A-PBFREE/4806845. ↩︎
Authors

This work is licensed under a Creative Commons Attribution 4.0 International License .
Related Content:
- TO-273AA Component Package
- SOT-665 Component Package
- TO-5 Component Package
- TO-205AD Component Package
- TO-279 Component Package