COMPONENT PACKAGES

SOT-89 Component Package

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Overview

NameSOT-89 (Small Outline Transistor 89)
Synonyms
  • SC-62
  • TO-243
Variants
  • SOT-89-3
  • SOT-89-5
Similar Ton/a
MountingSMD
Pin Count3, 5
Pitch1.50mm (between lead centers on the same side)
SolderabilityThe 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**
$$ \theta_{JA} = 168^{\circ}C/W $$
Dimensions4.6x4.25mm
3D Modelsn/a
Common UsesBLDC 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:

$$ \theta_{JA} = 168^{\circ}C/W $$
$$ \theta_{JC} = 36^{\circ}C/W $$

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