There were several popular IC (integrated circuit) package types, including SOT-23, SOT-223, and SOT-89. These packages are commonly used for discrete semiconductors, such as transistors, voltage regulators, and other small-scale integrated circuits.
- SOT-23 (Small Outline Transistor 23): It is a small surface-mount package with three or more leads. SOT-23 packages are widely used for small-signal transistors, diodes, voltage references, and other low-power ICs.
- SOT-223 (Small Outline Transistor 223): This package is larger than SOT-23 and has five leads. It provides better power dissipation capabilities and is often used for voltage regulators, MOSFETs, and other power devices.
- SOT-89 (Small Outline Transistor 89): It is a surface-mount package with three leads, featuring a larger footprint compared to SOT-23. SOT-89 packages are commonly used for medium-power transistors, voltage regulators, and various small-scale ICs.