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- Stock & Prices $ Price & Stock for BD241A
- Part Number BD241A
- Manufacturer STMicroelectronics
- Pin Count 3
- Part Category Transistor
- Package Category Transistor Outline, Vertical
- Footprint Name Transistor Outline, Vertical - TO-220 MECHANICAL DATA--2025
- Released Date Dec 1, 2025
- Last Modified Date Jan 8, 2026 2:31 PM UTC
- Pinout / Pin List Click Here (Member Only)
BD241A Details
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Manufacturer Part Number:
BD241A
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Rohs Code:
Yes
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Part Life Cycle Code:
Obsolete
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Part Package Code:
TO-220AB
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Package Description:
ROHS COMPLIANT, TO-220, 3 PIN
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Pin Count:
3
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ECCN Code:
EAR99
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HTS Code:
8541.29.00.95
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Manufacturer:
STMicroelectronics
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YTEOL:
0
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Collector Current-Max (IC):
3 A
BD241A Frequently Asked Questions (FAQs)
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The BD241A can operate from -40°C to 150°C, but the maximum junction temperature (TJ) should not exceed 150°C.
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To ensure proper biasing, connect the input voltage (VIN) to a stable voltage source, and decouple it with a 10uF capacitor to ground. Also, ensure the output voltage (VOUT) is properly decoupled with a 10uF capacitor to ground.
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A 10uF ceramic capacitor (X5R or X7R type) is recommended for input decoupling. This value provides a good balance between filtering and stability.
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The BD241A is designed for low-current applications (up to 1A). For high-current applications, consider using a different regulator, such as the BD242A or BD243A, which can handle higher currents (up to 2A and 3A, respectively).
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The output voltage (VOUT) of the BD241A is adjustable and can be calculated using the formula: VOUT = VREF * (1 + R1/R2), where VREF is the internal reference voltage (1.25V), and R1 and R2 are the resistors used to set the output voltage.
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BD241A Overview
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About STMicroelectronics
STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components.
STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut