## Summary of the Document: BUX84 NPN Silicon Power Transistor Datasheet

This document is a comprehensive datasheet for the BUX84 NPN silicon power transistor. It provides detailed technical specifications, characteristics, and mechanical data for this component. Here's a breakdown of the key information:

1. Core Specifications: The datasheet outlines the electrical characteristics of the BUX84, including maximum ratings for collector current, collector-emitter voltage, base voltage, power dissipation, and operating/storage temperature. It details parameters like DC current gain (hFE), breakdown voltages, and switching characteristics.

2. Performance Graphs & Characteristics: Numerous graphs illustrate typical performance characteristics, such as:
- DC current gain vs. collector current
- Collector cutoff current vs. case temperature
- Safe Operating Area (SOA)
- Thermal response (junction-to-case resistance)

3. Mechanical Details: The document includes a detailed drawing of the TO-220 package, providing dimensions and layout information for PCB mounting. It also notes the electrical connection of the center pin to the mounting tab. Variations in mounting hole standoff height (version 1 & 2) are specified.

4. Thermal Information: The datasheet includes data and graphs concerning thermal resistance and how it affects the device's performance under pulsed conditions.

5. Important Notices & Disclaimer: Power Innovations Limited includes standard disclaimers regarding product changes, warranty, liability, and the unsuitability of the component for life-support applications.

In essence, this datasheet is a technical reference for engineers and designers who need to understand and utilize the BUX84 power transistor in their designs. It provides all the necessary information to ensure proper operation, thermal management, and reliability.