Small-outline transistor
A small outline transistor is a family of small footprint, discrete surface mount transistor commonly used in consumer electronics. The most common SOT are SOT23 variations,. SOT23-5 differs from SOT23 in a wider body of instead of. Also, manufacturers offer the nearly identical thin small outline transistor package, where lower height is important.
SOT23-3, SOT323, SOT416
The SOT23-3 package is very popular and a common package for transistors, as well as diodes and voltage regulators.
SOT23-8
| Dimensions |
| A | 2.90 ± 0.10 |
| B | 1.60 ± 0.10 |
| C | 1.27 |
| D | 0.3 |
| G | 0.650 typ. |
| H | 0.0762 |
| J | 0.152 |
| K | 0.575 |
| S | 2.80 ± 0.20 |
| L | |
SOT54
SOT54 is an alternate designation for the JEDEC TO-92 package.
SOT490
| Dimensions |
| A | |
| B | |
| C | |
| D | |
| G | 0.5 |
| J | |
| K | |
| S | |
| L | 1.0 |
SOT89-3
The SOT89-3 electrically only has three leads. The wide lead is physically part of the middle lead on the other side of the package. Some call this package a SOT89-4, since it visually appears to have four leads when looking down at the part.
| Dimensions |
| A | 4.5 |
| B | 2.5 |
| C | 1.5 ± 0.1 |
| D | |
| E | 1.6 |
| F | |
| G | 1.5 |
| J | |
| K | |
| S | |
| L | 3 |
SOT89-5
The SOT89-5 electrically only has five leads. The middle lead is physically part of the middle lead on the other side of the package. Some call this package a SOT89-6, since it visually appears to have six leads when looking down at the part.
| Dimensions |
| A | 4.6 |
| B | 2.6 |
| C | 1.6 |
| D | |
| E | |
| F | |
| G | 1.5 |
| H | |
| J | |
| K | |
| S | |
| L | |
SOT223 (SOT223-4)
The SOT223-4 package is a popular package for voltage regulators. It was introduced by Philips.
SOT223-5
The SOT223-5 package is a popular package for voltage regulators.
SOT223-8
The SOT223-8 package is a popular package for bridged quad transistors.