Detailed parameters and application introduction of VBsemi 2SJ185-VB transistor:

- **Parameter description:**
- Package type: SOT23
- Channel type: P-Channel
- Maximum withstand voltage: -60V
- Maximum current: -0.5A
- On resistance: \(R_{DS(ON)} = 3000 \, m\Omega\) @ \(V_{GS} = 10V, V_{GS} = 20V\)
- Threshold voltage: \(V_{th} = -1.87V\)

- **Application introduction:**
- Suitable for circuit design requiring P-Channel channel, especially when there is a load on the power supply voltage.
- Due to its high maximum withstand voltage and low on resistance, it is suitable for use in applications requiring high stability and low power consumption.

- **Example Applications:**
- Power Management Module: Due to its P-Channel characteristics, it is suitable for power switches and regulation circuits.
- Low Power Amplifier: It can be used for audio amplification circuits, especially in scenarios where load power is required.

Please note that in actual applications, the specific circuit design needs to consider the overall circuit requirements and performance characteristics.