VBsemi K3290-VB is an N-channel field effect transistor in SOT23-3 package. The following are the detailed parameters and application introduction:

**Detailed parameters:**
- Silk screen: VB1330
- Brand: VBsemi
- Package: SOT23-3
- Type: N-Channel channel
- Rated voltage (VDS): 30V
- Rated current (ID): 6.5A
- Static drain-source resistance (RDS(ON)): 30mΩ @ VGS=10V, VGS=20V
- Threshold voltage (Vth): 1.2~2.2V

**Application introduction:**
This transistor is suitable for a variety of applications, including but not limited to the following:

1. **Power module:** Due to its higher rated voltage and current, it is suitable for power modules to help achieve effective power control and regulation.

2. **Current Control Module:** Through its low leakage resistance and adjustable threshold voltage, it can play a role in the current control module for precise current control.

3. **Switching Power Supply:** In the switching power supply, this field effect transistor can be used for switching regulation to improve efficiency and performance.

4. **Current Amplifier:** Due to its N-channel structure, it is suitable for current amplifier circuits and can play a role in various amplification applications.

Please note that the specific application depends on the system design requirements. Make sure the selected device meets the electrical and performance specifications of the specific application.