2SD718 Datasheet – 120V, 8A, NPN Transistor – Mospec

The 2SD718 is a powerful transistor that can be used in a wide range of electronic circuits for power amplification applications. Its high power and voltage handling capabilities, as well as its high gain, make it suitable for use in high-power audio amplifiers, power supplies, and motor control circuits. However, its slow switching speed and high output capacitance may limit its use in some high-performance applications.

Part Number: 2SD718

Function: 8A, 120V, 80W, High-power NPN Silicon Power Transistor

Package: TO-247 Type

Manufacturer: Mospec Semiconductor

Image and Pinouts:

2SD718 datasheet



The 2SD718 designed for use in general-purpose amplifer and switching application.


1. Recommend for 45 – 50W Audio Frequency Amplifier Output stage.

2. Complementary to 2SB688



Absolute Maximum Ratings :

1. Collector-Base Voltage : VCBO = 120 V

2. Collector-Emitter Voltage : VCEO = 120 V

3. Emitter-Base Voltage : VEBO = 5 V

4. Collector Current: Ic = 8 A

5. Base Current : IB = 0.8 A

6. Collector Power Dissipation (Tc=25℃) : Pc = 80 W

Other data sheets are available within the file: D718

2SD718 Datasheet PDF

2SD718 pdf

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M5840 Datasheet PDF – Off-line PWM Controller, SOP 8

Part Number: M5840

Function: High-performance Off-line PWM Controller

Package: SOP-8 Pin Type

Manufacturer: Mojay ( www.mojay.com.cn )


M5840 datasheet pdf


This is high-performance off-line PWM controller for low-power AC/DC chargers and power adapter.

The M5840 is a high-performance off-line PWM power switch used in low-power AC/DC battery chargers, power adapters, and LEDs. The constant voltage and constant current accuracy can be maintained within ±5% within the full voltage input range. The chip adopts the primary side feedback technology, so that the TL431 and optocoupler can be saved in the system application to reduce the cost.



M5840 pinout


1. Constant voltage and constant current accuracy up to 5%

2. Primary side control mode, no need for TL431 and optocoupler

3. Flyback Topology in Discontinuous Mode

4. Quasi-resonant switching mode reduces switching losses

5. Built-in leading edge blanking circuit (LEB)

6. Constant voltage and constant current control



Suitable for small and medium power AC/DC off-line switching power supply

1. CC/CV battery charger

2. Mobile/cordless phone chargers

3. digital camera charger

4. PDA charger

5. Low power power adapter



M5840 Datasheet PDF

M5840 pdf

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