Overview
The BD677AG is a plastic, medium-power silicon NPN Darlington transistor produced by onsemi. This device is part of a series that includes the BD675AG, BD679AG, and BD681G, and is designed for use as output devices in complementary general-purpose amplifier applications. The BD677AG is known for its high DC current gain and monolithic construction, making it suitable for a variety of electronic circuits.
Key Specifications
| Rating | Symbol | Value | Unit |
|---|---|---|---|
| Collector-Emitter Voltage | VCEO | 60 | Vdc |
| Collector-Base Voltage | VCBO | 60 | Vdc |
| Emitter-Base Voltage | VEBO | 5.0 | Vdc |
| Collector Current | IC | 4.0 | Adc |
| Base Current | IB | 1.0 | Adc |
| Total Device Dissipation @ TC = 25°C | PD | 40 | W |
| Derate above 25°C | 0.32 | W/°C | |
| Operating and Storage Junction Temperature Range | TJ, Tstg | –55 to +150 | °C |
| Thermal Resistance, Junction-to-Case | RJC | 3.13 | °C/W |
Key Features
- High DC Current Gain: The BD677AG offers a high DC current gain, making it suitable for applications requiring high current amplification.
- Monolithic Construction: The transistor is built with a monolithic construction, ensuring reliability and stability in operation.
- Complementary Devices: It is complementary to other onsemi devices such as BD676, 676A, 678, 678A, 680, 680A, and 682.
- Equivalent Devices: The BD677AG is equivalent to MJE 801, making it a versatile choice for various applications.
- Pb-Free and RoHS Compliant: The device is lead-free and RoHS compliant, adhering to environmental and safety standards.
Applications
The BD677AG is used in a variety of applications, including:
- General-Purpose Amplifiers: It serves as an output device in complementary general-purpose amplifier circuits.
- Power Amplifiers: Its high current gain and medium power handling capabilities make it suitable for power amplifier applications.
- Automotive and Industrial Systems: The transistor can be used in automotive and industrial systems where high reliability and stability are required.
Q & A
- What is the collector-emitter voltage rating of the BD677AG?
The collector-emitter voltage rating of the BD677AG is 60 Vdc.
- What is the maximum collector current of the BD677AG?
The maximum collector current is 4.0 Adc.
- What is the thermal resistance, junction-to-case, of the BD677AG?
The thermal resistance, junction-to-case, is 3.13 °C/W.
- Is the BD677AG Pb-Free and RoHS compliant?
- What is the operating and storage junction temperature range of the BD677AG?
The operating and storage junction temperature range is –55 to +150 °C.
- What are the equivalent devices to the BD677AG?
The BD677AG is equivalent to MJE 801.
- What is the total device dissipation at TC = 25°C for the BD677AG?
The total device dissipation at TC = 25°C is 40 W.
- What is the base-emitter on voltage of the BD677AG?
The base-emitter on voltage is approximately 2.5 Vdc.
- What is the collector-emitter saturation voltage of the BD677AG?
The collector-emitter saturation voltage is approximately 2.5 Vdc.
- What package type is the BD677AG available in?
The BD677AG is available in the TO-225 package.
