Overview
The BC857B_R1_00001 is a PNP general-purpose bipolar junction transistor (BJT) manufactured by Panjit International Inc. This transistor is designed for small signal applications, particularly in audio frequency (AF) input stages and driver circuits. It is known for its high current gain, low collector-emitter saturation voltage, and low noise characteristics between 30 Hz and 15 kHz. The BC857B is part of a family of transistors that are RoHS compliant and come in a surface-mount SOT-23 package, making it suitable for a wide range of electronic designs.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Polarity | PNP | - |
| Package | SOT-23 | - |
| Collector-Base Voltage (Vcb) | 50 | V |
| Collector-Emitter Voltage (Vce) | 45 | V |
| Emitter-Base Voltage (Veb) | 6 | V |
| Collector Current (Ic max) | 0.1 | A |
| Collector Power Dissipation (Pc) | 0.2 | W |
| Transition Frequency (ft) | 300 | MHz |
| DC Current Gain (hFE) min | 210 | - |
| Operating Junction Temperature (Tj) | -55 to 150 | °C |
Key Features
- High current gain, with a minimum DC current gain (hFE) of 210.
- Low collector-emitter saturation voltage, making it suitable for low-voltage applications.
- Low noise between 30 Hz and 15 kHz, ideal for audio frequency applications.
- Pb-free (RoHS compliant) package, ensuring environmental compliance.
- Qualified according to AEC Q101, indicating suitability for automotive and other demanding applications.
- Surface-mount SOT-23 package, facilitating easy integration into modern electronic designs.
Applications
- AUDIO FREQUENCY (AF) INPUT STAGES: Ideal for use in AF amplifier circuits due to its low noise and high current gain characteristics.
- DRIVER APPLICATIONS: Suitable for driving small loads in various electronic circuits.
- SWITCHING APPLICATIONS: Can be used in switching circuits where low collector-emitter saturation voltage is beneficial.
- AUTOMOTIVE AND INDUSTRIAL APPLICATIONS: Qualified according to AEC Q101, making it suitable for use in automotive and other demanding environments.
Q & A
- What is the polarity of the BC857B transistor?
The BC857B transistor is a PNP type bipolar junction transistor.
- What is the maximum collector-emitter voltage (Vce) of the BC857B?
The maximum collector-emitter voltage (Vce) of the BC857B is 45 V.
- What is the minimum DC current gain (hFE) of the BC857B?
The minimum DC current gain (hFE) of the BC857B is 210.
- What is the transition frequency (ft) of the BC857B?
The transition frequency (ft) of the BC857B is 300 MHz.
- What is the operating junction temperature range of the BC857B?
The operating junction temperature range of the BC857B is -55°C to 150°C.
- Is the BC857B RoHS compliant?
Yes, the BC857B is RoHS compliant and comes in a Pb-free package.
- What is the package type of the BC857B?
The BC857B comes in a surface-mount SOT-23 package.
- What are some typical applications of the BC857B?
The BC857B is typically used in AF input stages, driver applications, switching circuits, and automotive applications.
- Is the BC857B qualified for automotive use?
Yes, the BC857B is qualified according to AEC Q101, making it suitable for automotive and other demanding applications.
- What is the collector power dissipation (Pc) of the BC857B?
The collector power dissipation (Pc) of the BC857B is 0.2 W.
