Product introduction：
SMS4003K-VB MOSFET Product Introduction
The SMS4003K-VB is a single N-channel MOSFET in a SOT23-3 package with a maximum drain-source voltage (VDS) of 30V and a maximum gate-source voltage (VGS) of ±20V, suitable for low-voltage, high-frequency switching applications. This MOSFET has a low on-resistance (RDS(ON)) of 33mΩ (VGS = 4.5V) and 30mΩ (VGS = 10V), providing efficient current transfer and low power consumption. Its threshold voltage (Vth) is 1.7V, which supports lower gate-source voltage drive, enabling it to operate stably in low-power, high-efficiency circuits. Using Trench technology, the SMS4003K-VB provides reliable switching performance for small and medium power applications, and is suitable for use in portable devices, consumer electronics, and power management systems.
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Product parameter：
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds2.5 |
Rds4.5 |
Rds10 |
Technology |
| SOT23-3 |
Single-N |
30V |
20（±V） |
1.7V |
6.5A |
|
|
30mΩ |
|
SMS4003K-VB MOSFET parameter description
- **Package type**: SOT23-3
- **Configuration**: Single N-channel
- **Maximum drain-source voltage (VDS)**: 30V
- **Maximum gate-source voltage (VGS)**: ±20V
- **Threshold voltage (Vth)**: 1.7V
- **On-resistance (RDS(ON))**:
- @ VGS = 4.5V: 33mΩ
- @ VGS = 10V: 30mΩ
- **Maximum drain current (ID)**: 6.5A
- **Technology**: Trench
Domain and module applications：
SMS4003K-VB MOSFET Applications
1. **Portable Electronic Devices**:
- SMS4003K-VB is suitable for power management and battery-powered systems in portable devices such as mobile phones, tablets, and laptops. In these applications, it can act as a switching element to control the switching and current regulation of the power supply, thereby improving battery efficiency and reducing power consumption.
2. **Consumer Electronics**:
- In TVs, audio equipment, digital cameras, headphones, and other consumer electronics, SMS4003K-VB can be used for power management, overvoltage protection, and switch control functions. Its low on-resistance and low threshold voltage make it suitable for efficient power control of low-power consumer electronic devices.
3. **LED Drive Circuits**:
- SMS4003K-VB can be used as a switch element in LED drive circuits to provide efficient current transmission and switching capabilities. Due to its low on-resistance and high current carrying capacity, it can reduce power loss and improve efficiency in applications such as efficient driving of LED lamps, backlights, etc.
4. **Low Voltage Power Module**:
- In low voltage power modules, SMS4003K-VB can be used in DC-DC converters, LDOs (low dropout regulators) and other power management modules. It is able to provide stable and efficient switching operations and is widely used in power conversion and regulation in consumer electronics and embedded systems.
5. **Communication Equipment and Network Equipment**:
- SMS4003K-VB is suitable for use in network equipment such as routers, switches, communication base stations, etc., especially in power management circuits that require low voltage, low power consumption and miniaturization. Its compact package and efficient current control characteristics make it very suitable for embedded communication equipment.
6. **Automotive Electronics**:
- In automotive electronic systems, SMS4003K-VB can be used to control low-power power modules, such as vehicle lighting, sensor power, battery management, and power window control. Due to its efficient current switching characteristics, it can provide stable power support in vehicle systems.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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