Overview
The BF821/DG/B2215 is a PNP high voltage transistor produced by NXP USA Inc., now part of Nexperia. This transistor is packaged in a small SOT23 Surface-Mounted Device (SMD) plastic package, making it suitable for a variety of applications where space is limited. The BF821 is designed for low current and high voltage operations, making it a versatile component in electronic designs.
Key Specifications
| Type number | Package version | Package name | Size (mm) | Channel type | P tot (mW) | V CEO [max] (V) | I C [max] (mA) | h FE [min] | T J [max] (°C) | f T [min] (MHz) | Automotive qualified |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BF821 | SOT23 | SOT23 | 2.9 x 1.3 x 1 | PNP | 250 | -300 | -50 | 50 | 150 | 60 | Yes |
Key Features
- Low Current Capability: Maximum current of 50 mA.
- High Voltage Capability: Maximum collector-emitter voltage of 300 V.
- Compact Package: SOT23 package, ideal for space-constrained designs.
- Automotive Qualified: Suitable for use in automotive applications.
- High Temperature Operation: Maximum junction temperature of 150°C.
Applications
- Telephony and Professional Communication Equipment: Ideal for use in telecommunication devices due to its high voltage and low current characteristics.
- Automotive Electronics: Qualified for automotive applications, making it suitable for various automotive systems.
- Industrial and Consumer Electronics: Can be used in a wide range of industrial and consumer electronic devices where high voltage and low current are required.
Q & A
- What is the maximum collector-emitter voltage of the BF821 transistor?
The maximum collector-emitter voltage (V CEO) of the BF821 transistor is 300 V.
- What is the package type of the BF821 transistor?
The BF821 transistor is packaged in a SOT23 Surface-Mounted Device (SMD) plastic package.
- What is the maximum current handling capability of the BF821 transistor?
The maximum current (I C) of the BF821 transistor is 50 mA.
- Is the BF821 transistor automotive qualified?
Yes, the BF821 transistor is automotive qualified.
- What is the maximum junction temperature of the BF821 transistor?
The maximum junction temperature (T J) of the BF821 transistor is 150°C.
- What are the NPN complements of the BF821 transistor?
The NPN complements of the BF821 transistor are BF820 and BF822.
- Where can I find more detailed specifications and datasheets for the BF821 transistor?
You can find detailed specifications and datasheets for the BF821 transistor on the Nexperia website or through authorized distributors.
- What are some common applications of the BF821 transistor?
The BF821 transistor is commonly used in telephony and professional communication equipment, automotive electronics, and various industrial and consumer electronic devices.
- How do I order samples of the BF821 transistor?
You can order samples of the BF821 transistor through Nexperia's sales organization or through their network of global and regional distributors.
- Are there any evaluation boards available for the BF821 transistor?
Yes, Nexperia offers various evaluation boards that can help you assess the performance of the BF821 transistor in different applications.
