### Detailed product parameter description:

**Product model: ** CES2321A-VB
**Silk screen: ** VB2290
**Brand: ** VBsemi
**Parameters: **
- Package type: SOT23
- Channel type: P—Channel
- Rated voltage: -20V
- Rated current: -4A
- On-resistance: RDS(ON)=57mΩ @ VGS=4.5V, VGS=12V
- Threshold voltage: Vth=-0.81V

**Package: ** SOT23

### Application introduction:

CES2321A-VB is a P-Channel field effect transistor in a SOT23 package with excellent electrical performance and is suitable for a variety of application scenarios. The following are some typical application areas and module examples:

1. **Power management module:** Due to the product's rated voltage of -20V and rated current of -4A, it is suitable for power management modules and can be used in scenarios such as switching power supplies and battery charge and discharge management to provide efficient and reliable power control.

2. **Drive module:** With low on-resistance, it is suitable for drive modules, such as for driving motors, LEDs, etc., and can achieve low loss under high current loads.

3. **Current control module:** Due to the low threshold voltage, it is suitable for current control modules, such as for LED drive current control, to achieve precise current regulation.

4. **Signal amplification module:** The compact SOT23 package is suitable for signal amplification modules, which can be used to amplify sensor output signals, etc.

### Example application areas:

1. **Industrial control:** Used to drive motors or actuators in industrial equipment.

2. **Power management:** Suitable for switching power supplies and battery management systems to provide reliable power control.

3. **Lighting control:** Used in LED drive circuits to achieve lighting control and provide efficient lighting solutions.

4. **Automotive electronics:** Used for power management and drive control in automotive electronic systems to provide high-performance automotive electronic solutions.

CES2321A-VB products have a wide range of applications in the above fields, providing high-performance options for various circuit designs. When choosing, please adjust according to specific system requirements and circuit design.