**Product model:** JCS4N80FH-VB.
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**Silk screen:** VBMB185R05.
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**Brand:** VBsemi.
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**Parameters:**.
- Package: TO220F.
- Channel type: N-Channel.
- Rated voltage: 850V.
- Rated current: 5A.
- On-resistance: RDS(ON)=2200mΩ @ VGS=10V, VGS=20V.
- Threshold voltage: Vth=3.5V.
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**Application introduction:**.
Suitable for modules in different fields, the specific functions include:.
1. **High voltage power supply:** In the high voltage power supply module, as an N-Channel power switch, it supports high voltage applications. .
2. **Power Inverter:** Used to build power inverter circuits for applications that require high voltage and low current. .
3. **Power Electronics:** In the field of power electronics, it can be used for various power control and conversion applications. .
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**Precautions for use:**.
1. Please ensure that the operation is within the rated voltage and current range and avoid exceeding the specified values. .
2. The TO220F package requires proper heat dissipation and layout design to maintain normal operating temperature. .
3. Consider the threshold voltage Vth=3.5V in the design to ensure the appropriate signal level. .
4. Select the appropriate protection mechanism according to the specific application scenario to deal with potential over-current and over-voltage conditions.