Overview
The BC857B-7-F is a PNP small-signal transistor produced by Diodes Incorporated. It is part of the BC857 series, which is designed for general-purpose amplifier applications. This transistor is housed in the SOT23 package, making it suitable for low-power surface mount applications. The BC857B-7-F is known for its high reliability and compliance with various industry standards, including RoHS and AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | -45 | V |
| Collector-Base Voltage (VCBO) | -50 | V |
| Emitter-Base Voltage (VEBO) | -5.0 | V |
| Collector Current (IC) | -100 | mA |
| Power Dissipation (Pd) | 300 | mW |
| DC Current Gain (hFE) @ IC = -2mA, VCE = -5V | 220 - 290 - 475 | |
| Collector-Emitter Saturation Voltage (VCE(sat)) @ IC = -10mA, IB = -0.5mA | -0.3 - -0.65 | V |
| Base-Emitter Saturation Voltage (VBE(sat)) @ IC = -10mA, IB = -0.5mA | -0.7 - -0.9 | V |
| Operating Temperature (TJ) | -55°C ~ 150°C | |
| Package | SOT23 | |
| Mounting Type | Surface Mount |
Key Features
- Ideally suited for automatic insertion and general-purpose amplifier applications.
- Complementary NPN types: BC846 – BC848.
- Totally lead-free and fully RoHS compliant.
- Halogen and antimony free, making it a “green” device.
- AEC-Q101 qualified and PPAP capable for high reliability in automotive and other applications.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
The BC857B-7-F transistor is versatile and can be used in a variety of applications, including:
- General-purpose amplifier circuits.
- Switching and AF (audio frequency) amplifier applications.
- Automotive electronics due to its AEC-Q101 qualification.
- Consumer electronics such as satellite TV set-top boxes, portable DVD players, and datacom devices.
- Industrial and medical devices where high reliability and compliance with industry standards are crucial.
Q & A
- What is the collector-emitter voltage (VCEO) of the BC857B-7-F transistor?
The collector-emitter voltage (VCEO) of the BC857B-7-F transistor is -45V. - What is the package type of the BC857B-7-F transistor?
The BC857B-7-F transistor is housed in the SOT23 package. - Is the BC857B-7-F transistor RoHS compliant?
Yes, the BC857B-7-F transistor is fully RoHS compliant and lead-free. - What is the maximum collector current (IC) of the BC857B-7-F transistor?
The maximum collector current (IC) of the BC857B-7-F transistor is -100 mA. - What is the operating temperature range of the BC857B-7-F transistor?
The operating temperature range (TJ) of the BC857B-7-F transistor is -55°C to 150°C. - Is the BC857B-7-F transistor suitable for automotive applications?
Yes, the BC857B-7-F transistor is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications. - What is the power dissipation (Pd) of the BC857B-7-F transistor?
The power dissipation (Pd) of the BC857B-7-F transistor is 300 mW. - What are the complementary NPN types for the BC857B-7-F transistor?
The complementary NPN types for the BC857B-7-F transistor are BC846 – BC848. - Is the BC857B-7-F transistor halogen and antimony free?
Yes, the BC857B-7-F transistor is halogen and antimony free, making it a “green” device. - What is the typical DC current gain (hFE) of the BC857B-7-F transistor?
The typical DC current gain (hFE) of the BC857B-7-F transistor is 220 - 290 - 475 at IC = -2mA, VCE = -5V.
