**ELM13421CA-VB detailed parameter description and application introduction:**

**Parameter Description:**
- **Brand:** VBsemi
- **Model:** ELM13421CA-VB
- **Silkscreen:** VB2355
- **Package:** SOT23-3
- **Channel Type:** P—Channel
- **Channel Voltage (VDS):** -30V
- **Continuous Drain Current (ID):** -5.6A
- **On-resistance (RDS(ON)):** 47mΩ @ VGS=10V, VGS=20V
- **Gate-source voltage (Vth):** -1V

**Application Introduction:**
ELM13421CA-VB is a P-Channel MOSFET, which is widely used in low-power, high-efficiency power management and switching power supply systems. Its excellent performance makes it widely used in a variety of electronic devices.

**Main features:**
1. **Low on-resistance:** It has low on-resistance and improves switching efficiency.
2. **Wide operating voltage range:** It can work stably in a wide voltage range.
3. **High drain current:** It supports higher continuous drain current and is suitable for high-power applications.
4. **Excellent temperature stability:** It has stable and reliable performance under different temperature conditions.

**Application areas:**
1. **Power management module:** It is suitable for low-voltage and high-efficiency power management systems.
2. **Switching power supply system:** It is used to control current and voltage and provide high-efficiency energy conversion.
3. **Battery management system:** It is used for battery charge and discharge control and protection.

**Applicable modules:**
1. **DC-DC converter:** Improves energy conversion efficiency and is widely used in portable devices.
2. **Battery charge and discharge module:** Controls the battery charging and discharging process to ensure battery life and performance.
3. **Switching power supply module:** Used for power management and regulation, can be applied to various electronic devices.

ELM13421CA-VB can play a key role in these fields and modules, providing reliable power management and switch control functions.