Overview
The BC557BTA is a PNP epitaxial silicon transistor manufactured by onsemi. It is designed for general-purpose and switching applications. This transistor is part of the BC557 series, which is known for its low current and low voltage characteristics. The BC557BTA is housed in a TO-92 package and is RoHS compliant, making it suitable for a wide range of electronic projects and designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Base Voltage (VCBO) | 50 | V |
| Collector-Emitter Voltage (VCEO) | 45 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (IC) | 100 | mA |
| Peak Collector Current (ICP) | 200 | mA |
| Peak Base Current (IBP) | 200 | mA |
| Maximum Junction Temperature (Tj) | 150 | °C |
| Transition Frequency (ft) | 150 | MHz |
| Collector Capacitance (Cc) | 6 | pF |
| Forward Current Transfer Ratio (hFE), MIN | 110 | |
| Power Dissipation (Pd) | 500 | mW |
| Package | TO-92 |
Key Features
- Low Current and Voltage: The BC557BTA is designed for low current (max. 100 mA) and low voltage (max. 45 V) applications.
- High Voltage Capability: It has a collector-emitter voltage rating of 45 V, making it suitable for various high-voltage applications.
- Complementary Pair: The BC557BTA is part of a complementary pair with NPN transistors like the BC546, BC547, and BC548.
- Switching and Amplifier Applications: It is versatile and can be used in both switching and amplifier circuits.
- RoHS Compliant: The transistor is RoHS compliant, ensuring it meets environmental standards.
- Pb-Free and Halogen-Free/BFR-Free: The device is lead-free and halogen-free/BFR-free, aligning with modern environmental regulations.
Applications
- General Purpose Circuits: The BC557BTA is suitable for general-purpose applications where low current and voltage are required.
- Switching Circuits: It can be used in switching circuits due to its fast switching times and high voltage ratings.
- Amplifier Circuits: The transistor is also used in amplifier circuits where low noise and high gain are necessary.
- Automotive and Industrial Electronics: Its robustness and compliance with environmental standards make it a good choice for automotive and industrial electronic applications.
Q & A
- What is the maximum collector-emitter voltage of the BC557BTA?
The maximum collector-emitter voltage (VCEO) of the BC557BTA is 45 V. - What is the maximum collector current of the BC557BTA?
The maximum collector current (IC) of the BC557BTA is 100 mA. - What is the package type of the BC557BTA?
The BC557BTA is housed in a TO-92 package. - Is the BC557BTA RoHS compliant?
Yes, the BC557BTA is RoHS compliant. - What is the transition frequency (ft) of the BC557BTA?
The transition frequency (ft) of the BC557BTA is 150 MHz. - What are the typical applications of the BC557BTA?
The BC557BTA is typically used in general-purpose, switching, and amplifier circuits. - What is the maximum junction temperature of the BC557BTA?
The maximum junction temperature (Tj) of the BC557BTA is 150 °C. - Is the BC557BTA lead-free and halogen-free/BFR-free?
Yes, the BC557BTA is lead-free and halogen-free/BFR-free. - What is the collector capacitance (Cc) of the BC557BTA?
The collector capacitance (Cc) of the BC557BTA is 6 pF. - What is the forward current transfer ratio (hFE) of the BC557BTA?
The minimum forward current transfer ratio (hFE) of the BC557BTA is 110.
