Overview
The BC857A RFG is a bipolar junction transistor (BJT) produced by Taiwan Semiconductor Corporation. It is part of the BC85XX series, known for its low power loss, high efficiency, and suitability for automated placement. This transistor is widely used in various electronic circuits due to its robust performance and reliability.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Collector-base voltage | VCBO | -50 | V |
| Collector-emitter voltage | VCEO | -45 | V |
| Emitter-base voltage | VEBO | -5 | V |
| Collector current | IC | -0.1 | A |
| Junction temperature | TJ | -55 to +150 | °C |
| Storage temperature | TSTG | -55 to +150 | °C |
| DC current gain | hFE | 125 - 250 | |
| Collector-emitter saturation voltage | VCE(sat) | -0.65 | V |
| Base-emitter saturation voltage | VBE(sat) | -1.10 | V |
| Transition frequency | fT | 100 | MHz |
| Power dissipation | PD | 200 | mW |
| Package | SOT-23-3 |
Key Features
- Low power loss and high efficiency.
- Ideal for automated placement due to its small SOT-23-3 package.
- High surge current capability.
- Moisture sensitivity level: level 1.
- Halogen-free (indicated by 'G' in the part number).
Applications
The BC857A RFG is versatile and can be used in a variety of applications, including:
- General-purpose switching and amplification circuits.
- Automotive and industrial control systems.
- Consumer electronics such as audio and video equipment.
- Power management and regulation circuits.
Q & A
- What is the collector-base voltage rating of the BC857A RFG?
The collector-base voltage (VCBO) is rated at -50 V.
- What is the maximum collector current for the BC857A RFG?
The maximum collector current (IC) is -0.1 A.
- What is the junction temperature range for the BC857A RFG?
The junction temperature (TJ) range is -55 to +150 °C.
- What is the DC current gain (hFE) range for the BC857A RFG?
The DC current gain (hFE) ranges from 125 to 250.
- What is the collector-emitter saturation voltage for the BC857A RFG?
The collector-emitter saturation voltage (VCE(sat)) is -0.65 V.
- What is the transition frequency (fT) of the BC857A RFG?
The transition frequency (fT) is 100 MHz.
- What package type is the BC857A RFG available in?
The BC857A RFG is available in the SOT-23-3 package.
- Is the BC857A RFG halogen-free?
- What is the moisture sensitivity level of the BC857A RFG?
The moisture sensitivity level is level 1.
- What are some common applications of the BC857A RFG?
It is used in general-purpose switching and amplification circuits, automotive and industrial control systems, consumer electronics, and power management circuits.
