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BULT118 Information
BULT118 by STMicroelectronics is a Power Bipolar Transistor.
Power Bipolar Transistors are under the broader part category of Transistors.
A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.
US Tariff Estimator: BULT118 by STMicroelectronics
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
This table gives cross-reference parts and alternative options found for BULT118. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of BULT118, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
STMicroelectronics provides a recommended PCB layout in the application note AN4392, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The input capacitor value depends on the input voltage, output voltage, and desired output ripple. A general rule of thumb is to choose a capacitor with a value between 1uF to 10uF, with a voltage rating at least 1.5 times the input voltage. Consult the datasheet and application notes for more specific guidance.
While the datasheet specifies an operating temperature range of -40°C to 150°C, the maximum ambient temperature for reliable operation is typically around 125°C. Exceeding this temperature may lead to reduced performance, increased power consumption, or even device failure.
Proper biasing is crucial for the BULT118. Ensure that the input voltage is within the recommended range, and the enable pin (EN) is properly biased to either VCC or GND. Consult the datasheet and application notes for specific biasing requirements and guidelines.
Thermal management is critical for the BULT118. Ensure good airflow, use a heat sink if necessary, and follow the recommended PCB layout guidelines. Avoid placing heat-sensitive components near the BULT118, and consider using thermal interface materials to improve heat dissipation.