## Summary of the STF817A / STN817A Datasheet

This document is a datasheet for the STF817A and STN817A NPN bipolar transistors. Here's a breakdown of the key information:

Key Features & Applications:

️· Type: NPN Bipolar Transistor
️· Package: Available in SOT-223 and SOT-89 packages
️· Typical Applications: General purpose amplification and switching.

Electrical Characteristics (Key Parameters):

️· Maximum Collector Current (IC): -1.5A
️· Maximum Collector-Emitter Voltage (VCEO): -80V
️· Maximum Base Current (IB): -0.3A
️· hFE (DC Current Gain): Typically 140 at -100mA collector current, reduces to around 30 at -1A.
️· Total Dissipation (PTOT): 1.6W (SOT-223) / 1.4W (SOT-89)

Thermal Characteristics:

️· Thermal Resistance (Rthj-amb): 78°C/W (SOT-223) / 89°C/W (SOT-89)

Key Highlights:

️· ECOPACK Packaging: These devices are available in lead-free packaging to meet environmental requirements.
️· Datasheet Version: This document is dated November 3, 2005, and represents revision 1 of the datasheet.

In essence, the datasheet provides the specifications for these transistors, enabling engineers to determine if they are suitable for use in their designs.