COMPONENT PACKAGES
SOT-89 Component Package
| Date Published: | |
| Last Modified: |
Overview
| Name | SOT-89 (Small Outline Transistor 89) |
| Synonyms |
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| Variants |
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| 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 | 4.6x4.25mm |
| 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.
Dimensions
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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