Overview
The BC857BWHE3-TP is a PNP general-purpose transistor manufactured by Micro Commercial Components (MCC). This transistor is part of the BC857 series, which includes variants such as BC857A, BC857B, and BC857C. It is housed in a SOT-23 package, making it suitable for surface-mount applications. The BC857 series is known for its high current gain, low collector-emitter saturation voltage, and low noise characteristics, making it ideal for various electronic circuits.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Units | Conditions |
|---|---|---|---|---|---|---|
| Collector-Emitter Voltage | VCEO | - | - | -45 | V | - |
| Collector Current | IC | - | - | -100 | mA | - |
| Peak Collector Current | ICM | - | - | -200 | mA | - |
| Emitter-Base Voltage | VEBO | - | - | -5 | V | - |
| Collector-Base Voltage | VCBO | - | - | -50 | V | - |
| Power Dissipation | Ptot | - | - | 250 | mW | Tamb ≤ 25°C |
| Junction Temperature | Tj | - | - | 150 | °C | - |
| Storage Temperature | Tstg | -65 | - | 150 | °C | - |
| DC Current Gain (hFE) | - | 125 | - | 800 | - | VCE = -5 V, IC = -2 mA |
| Collector-Emitter Saturation Voltage | VCE(sat) | - | - | 300 | mV | IC = -10 mA, IB = -0.5 mA |
| Base-Emitter Saturation Voltage | VBE(sat) | - | - | 750 | mV | IC = -10 mA, IB = -0.5 mA |
Key Features
- High Current Gain: The BC857 series offers a high DC current gain (hFE) ranging from 125 to 800, making it suitable for amplifier and switching applications.
- Low Collector-Emitter Saturation Voltage: The transistor has a low VCE(sat) of up to 300 mV, which is beneficial for reducing power losses in switching circuits.
- Low Noise: It exhibits low noise characteristics between 30 Hz and 15 kHz, making it suitable for audio frequency (AF) applications.
- Halogen-Free and RoHS Compliant: The BC857 series is halogen-free and RoHS compliant, ensuring environmental sustainability and compliance with regulatory standards.
- Wide Operating Temperature Range: The transistor can operate over a wide temperature range from -55°C to 150°C, making it versatile for various environmental conditions.
Applications
- Audio Frequency (AF) Input Stages: The BC857 series is well-suited for AF input stages due to its low noise characteristics and high current gain.
- Driver Applications: It can be used in driver applications where high current gain and low saturation voltages are required.
- General-Purpose Amplifier and Switching Circuits: The transistor is versatile and can be used in a variety of general-purpose amplifier and switching circuits.
Q & A
- What is the maximum collector-emitter voltage (VCEO) for the BC857 series?
The maximum collector-emitter voltage (VCEO) for the BC857 series is -45 V.
- What is the peak collector current (ICM) rating for the BC857 series?
The peak collector current (ICM) rating for the BC857 series is -200 mA.
- What is the typical DC current gain (hFE) for the BC857 series?
The typical DC current gain (hFE) for the BC857 series ranges from 125 to 800.
- Is the BC857 series RoHS compliant?
Yes, the BC857 series is RoHS compliant and halogen-free.
- What is the operating junction temperature range for the BC857 series?
The operating junction temperature range for the BC857 series is from -55°C to 150°C.
- What are the typical applications for the BC857 series?
The BC857 series is typically used in AF input stages, driver applications, and general-purpose amplifier and switching circuits.
- What is the collector-emitter saturation voltage (VCE(sat)) for the BC857 series?
The collector-emitter saturation voltage (VCE(sat)) for the BC857 series is up to 300 mV.
- What is the base-emitter saturation voltage (VBE(sat)) for the BC857 series?
The base-emitter saturation voltage (VBE(sat)) for the BC857 series is up to 750 mV.
- What is the power dissipation (Ptot) rating for the BC857 series at ambient temperature ≤ 25°C?
The power dissipation (Ptot) rating for the BC857 series at ambient temperature ≤ 25°C is 250 mW.
- Is the BC857 series suitable for high-frequency applications?
Yes, the BC857 series has a current gain-bandwidth product (fT) that makes it suitable for high-frequency applications.
