ELM13403CA-VB is a P-Channel field effect transistor of VBsemi brand, using SOT23-3 package. The following is a detailed parameter description and application introduction:

- **Parameter Description:**
- Silkscreen: VB2355
- Brand: VBsemi
- Package: SOT23-3
- Polarity: P-Channel
- Rated voltage (VDS): -30V
- Rated current (ID): -5.6A
- RDS(ON): 47mΩ @ VGS=10V, VGS=20V
- Threshold voltage (Vth): -1V

- **Application Introduction:**
- ELM13403CA-VB is suitable for a variety of power management and switching power supply applications, especially for circuit designs requiring P-Channel MOSFET.
- Based on its performance parameters, this device is widely used in electronic devices that require high efficiency, compactness and low power consumption.

- **Field and module application:**
- **Power management module:** Used in switching power supplies and voltage regulators to improve power efficiency and stability.
- **Portable devices:** Helps optimize power performance and battery life in devices such as mobile phones and tablets.
- **LED drivers:** Used for power regulation and control in LED lighting systems.
- **Consumer electronics:** Provides efficient power switching solutions in various electronic products.

Please note that specific applications need to be verified based on system requirements and circuit design.