Overview
The BC857BW-G is a PNP bipolar junction transistor (BJT) manufactured by Comchip Technology. This transistor is designed for general-purpose and small-signal applications, including switching and audio frequency (AF) amplifier uses. It is packaged in a SOT-323 surface mount format, making it suitable for a wide range of electronic circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Base Voltage (VCBO) | -50 | V |
| Collector-Emitter Voltage (VCEO) | -45 | V |
| Emitter-Base Voltage (VEBO) | -5.0 | V |
| Continuous Collector Current (IC) | 100 | mA |
| Peak Pulse Collector Current (ICM) | 200 | mA |
| Power Dissipation (PD) | 150 | mW |
| Transition Frequency (fT) | 100 | MHz |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 650 | mV |
| Operating and Storage Temperature Range | -55 to +150 | °C |
| Package Type | SOT-323 |
Key Features
- Ideally suited for automatic insertion and high-volume production.
- Complementary NPN types available (e.g., BC846AW - BC848CW).
- Totally lead-free and fully RoHS compliant.
- Halogen and antimony free, making it a 'green' device.
- Qualified to JEDEC standards for high reliability.
- Molded plastic case with UL flammability classification rating 94V-0.
- Matte tin plated leads, solderable per MIL-STD-202, Method 208.
Applications
The BC857BW-G transistor is versatile and can be used in various applications, including:
- Switching circuits: Due to its high transition frequency and low saturation voltage, it is suitable for high-speed switching applications.
- Audio frequency amplifiers: Its low noise figure and high current gain make it ideal for AF amplifier circuits.
- Automotive systems: It can be used in automotive applications requiring specific change control, such as in TPMS, seat heating systems, and remote keyless entry systems.
- Consumer electronics: Suitable for use in devices like mobile phones, notebook PCs, LCD TVs, and digital still cameras.
Q & A
- What is the package type of the BC857BW-G transistor?
The BC857BW-G transistor is packaged in a SOT-323 surface mount format. - What are the maximum collector-base and collector-emitter voltages for the BC857BW-G?
The maximum collector-base voltage (VCBO) is -50V, and the maximum collector-emitter voltage (VCEO) is -45V. - What is the continuous collector current rating of the BC857BW-G?
The continuous collector current (IC) is rated at 100 mA. - Is the BC857BW-G RoHS compliant?
Yes, the BC857BW-G is totally lead-free and fully RoHS compliant. - What is the transition frequency (fT) of the BC857BW-G?
The transition frequency (fT) is 100 MHz. - What are some common applications of the BC857BW-G transistor?
Common applications include switching circuits, AF amplifiers, automotive systems, and various consumer electronics. - What is the collector-emitter saturation voltage (VCE(sat)) of the BC857BW-G?
The collector-emitter saturation voltage (VCE(sat)) is 650 mV. - Is the BC857BW-G suitable for high-volume production?
Yes, it is ideally suited for automatic insertion and high-volume production. - What is the operating and storage temperature range for the BC857BW-G?
The operating and storage temperature range is -55 to +150°C. - Is the BC857BW-G halogen and antimony free?
Yes, the BC857BW-G is halogen and antimony free, making it a 'green' device.
