Transistor D718 NPN 8A 120V
19,97 EGP
Transistor D718 NPN 8A 120V
Overview
The Transistor D718 is a high-power NPN bipolar junction transistor (BJT) specifically designed for audio amplification, voltage regulation, and high-current switching applications. With a collector current of 8 amperes and a collector-emitter voltage rating of 120 volts, this transistor provides exceptional power handling and stable performance in demanding electronic circuits.
Moreover, the Transistor D718 features low saturation voltage, high DC current gain, and excellent thermal stability, ensuring efficient operation in both analog and digital high-power systems.
Consequently, it is widely used in power amplifiers, inverters, and motor driver circuits, where efficiency, reliability, and heat management are crucial for long-term functionality.
Key Features
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Transistor Type: NPN
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Collector–Emitter Voltage (V<sub>CEO</sub>): 120 V
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Collector–Base Voltage (V<sub>CBO</sub>): 140 V
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Emitter–Base Voltage (V<sub>EBO</sub>): 5 V
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Collector Current (I<sub>C</sub>): 8 A
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Power Dissipation (P<sub>tot</sub>): 80 W
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DC Current Gain (h<sub>FE</sub>): 40 – 250
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Transition Frequency (f<sub>T</sub>): 8 MHz typical
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Package Type: TO-3P or TO-247 for efficient heat dissipation
Additionally, the Transistor D718 utilizes epitaxial planar technology, offering superior frequency response and reliable switching performance. Its TO-3P package ensures efficient heat transfer and easy mounting on heat sinks for high-power operation.
Typical Applications
The Transistor D718 is commonly used in:
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Audio power amplifiers and output stages
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Switching power supplies (SMPS)
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Inverter and converter circuits
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Relay and solenoid drivers
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DC motor control and regulation circuits
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Complementary pair applications (often with B688 PNP transistor)
Furthermore, its fast switching speed and high gain stability make the Transistor D718 ideal for industrial power systems and consumer electronics requiring high current and voltage endurance.
Electrical Characteristics (at T<sub>a</sub> = 25 °C)
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Collector–Base Voltage | V<sub>CBO</sub> | 140 | V |
| Collector–Emitter Voltage | V<sub>CEO</sub> | 120 | V |
| Emitter–Base Voltage | V<sub>EBO</sub> | 5 | V |
| Collector Current (Continuous) | I<sub>C</sub> | 8 | A |
| Power Dissipation | P<sub>tot</sub> | 80 | W |
| DC Current Gain | h<sub>FE</sub> | 40–250 | — |
| Transition Frequency | f<sub>T</sub> | 8 | MHz |
| Operating Temperature | T<sub>j</sub> | –55 °C → +150 °C | — |
Advantages
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High power handling with 8A current capacity and 120V rating.
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Low collector-emitter saturation voltage, resulting in reduced energy loss.
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Fast switching performance suitable for high-frequency circuits.
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Excellent thermal stability and long service life under continuous use.
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Moreover, the Transistor D718 offers balanced gain characteristics and low distortion, ensuring clear signal amplification and efficient switching.
Summary
In summary, the Transistor D718 is a robust, high-current NPN transistor designed to deliver powerful, efficient, and reliable performance in demanding electronic applications. With a collector current of 8A, voltage tolerance up to 120V, and 80W power dissipation, it stands out as an excellent solution for audio amplifiers, motor control, and high-power regulation systems.
Therefore, engineers and technicians trust the Transistor D718 for its durability, stability, and superior switching response, making it a preferred component in professional and industrial circuit designs.
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