Overview
The BC857AW-G is a PNP general-purpose small signal transistor manufactured by Comchip Technology. It is housed in a very small SOT-323 (SC-70) surface-mounted device (SMD) plastic package, making it ideal for compact and efficient circuit designs. This transistor is part of a series that includes the BC856AW-G and BC858AW-G, each with slightly different voltage ratings but similar overall characteristics.
Key Specifications
| Parameter | Symbol | Value | Units |
|---|---|---|---|
| Collector-Base Voltage | VCBO | -50 | V |
| Collector-Emitter Voltage | VCEO | -45 | V |
| Emitter-Base Voltage | VEBO | -5 | V |
| Collector Current | IC | -0.1 | A |
| Power Dissipation | PCM | 0.15 | W (@TA=25°C) |
| Operating and Storage Junction Temperature Range | TJ, TSTG | -65 to +150 | °C |
| DC Current Gain (hFE) | hFE | 250-800 | - |
| Transition Frequency | fT | 100 | MHz |
| Package Type | - | SOT-323 (SC-70) | - |
Key Features
- Ideally suited for automatic insertion, making it convenient for high-volume production.
- Compact SOT-323 (SC-70) package, suitable for space-constrained designs.
- High DC current gain (hFE) ranging from 250 to 800, depending on the specific model and operating conditions.
- Transition frequency of 100 MHz, indicating good high-frequency performance.
- Rohs compliant, ensuring environmental sustainability.
- Suitable for both switching and AF amplifier applications.
Applications
- Switching circuits: Due to its high switching speed and low saturation voltage, it is ideal for switching applications.
- AF Amplifier circuits: Suitable for audio frequency amplifier applications where low noise and high gain are required.
- Automotive electronics: Can be used in various automotive systems such as remote keyless entry, seat heating, and instrument clusters.
- Consumer electronics: Applicable in devices like mobile phones, notebooks, LCD TVs, and digital still cameras for power conversion and small signal circuits.
- Lighting systems: Can be used in LED lighting systems due to its efficiency and reliability.
Q & A
- What is the package type of the BC857AW-G transistor?
The BC857AW-G transistor is housed in a SOT-323 (SC-70) surface-mounted device (SMD) plastic package.
- What is the collector-base voltage (VCBO) of the BC857AW-G?
The collector-base voltage (VCBO) of the BC857AW-G is -50V.
- What is the maximum collector current (IC) for the BC857AW-G?
The maximum collector current (IC) for the BC857AW-G is -0.1A.
- What is the operating and storage junction temperature range for the BC857AW-G?
The operating and storage junction temperature range for the BC857AW-G is -65 to +150°C.
- What are the typical applications of the BC857AW-G transistor?
The BC857AW-G transistor is typically used in switching circuits, AF amplifier circuits, automotive electronics, consumer electronics, and lighting systems.
- Is the BC857AW-G RoHS compliant?
- What is the transition frequency (fT) of the BC857AW-G transistor?
The transition frequency (fT) of the BC857AW-G transistor is 100 MHz.
- What is the DC current gain (hFE) range for the BC857AW-G transistor?
The DC current gain (hFE) range for the BC857AW-G transistor is 250-800.
- Is the BC857AW-G suitable for high-frequency applications?
- What are the benefits of using the SOT-323 package for the BC857AW-G?
The SOT-323 package is compact and ideal for space-constrained designs, making it beneficial for high-density circuit boards.
