SOT-89 Component Package

Overview

Name SOT-89 (Small Outline Transistor 89)
Synonyms
  • SC-62
  • TO-243
Variants
  • SOT-89-3
  • SOT-89-5
Similar To n/a
Mounting SMD
Pin Count 3, 5
Pitch
  • 1.50mm (between lead centers on the same side)
Solderability The package is relatively easy to solder by hand. There are no issues with hand soldering the tab since the tab produces on one side of the package.
Thermal Resistance

SOT-89-5

$$ \theta_{JA} = 168^{\circ}C/W $$

Dimensions ¬†4.6×4.25mm
3D Models n/a
Common Uses
  • BLDC fan and motor drivers

Overview

SOT-89 is a small, surface-mount family of similar component packages. There are two variants within the family, the SOT-89-3 (with three leads), and the SOT-89-5 (with 5 leads).

All packages in this family have a number of rectangular leads and a¬†central single tab-shaped lead. The tab-shaped lead improves the thermal performance of the package (decreases it’s thermal resistance).

SOT-89-5

The SOT-89-5 package is commonly used as a SMD replacement for the SIP-4 TH package.

A 3D render of the SOT-89 (SC-62, TO-243) component package. Image from http://www.digikey.com/.
A 3D render of the SOT-89 (SC-62, TO-243) component package. Image from http://www.digikey.com/.

Dimensions

The dimensions for the SOT-89-5 (SC-62, TO-243) component package.
The dimensions for the SOT-89-5 (SC-62, TO-243) component package.

Thermal Resistance

www.diodes.com states their SOT-89-5 component package to have:

$$ \theta_{JA} = 168^{\circ}C/W $$

$$ \theta_{JC} = 36^{\circ}C/W $$

Posted: November 11th, 2015 at 4:16 pm
Last Updated on: November 11th, 2015 at 4:35 pm