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TK19A45D(STA4,Q,M)-VB Product details
Back to previous pageProduct introduction：
TK19A45D is a Single N-MOS deeply optimized for high-voltage power switching scenarios. The SJ_Multi-EPI super junction technology balances low conduction loss with fast switching capability. The TO220F full-plastic package achieves a good balance between heat dissipation performance and insulation safety. The combination of 500V withstand voltage, 20A current capacity, and 140mΩ on-resistance makes it a reliable power device for high-voltage applications such as adapters, chargers, and industrial power supplies, especially suitable for systems with strict requirements for voltage margin and thermal reliability.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 500V | 3.5V | 20A | 140(mΩ) | SJ_Multi-EPI |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | SJ_Multi-EPI |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 500V | 3.5V | 20A | SJ_Multi-EPI |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 500V | 3.5V | 20A | SJ_Multi-EPI |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| TO220F | Single-N |
VDS=500V: Suitable for 220V/380V line-frequency systems, providing ample voltage spike margin, reducing avalanche breakdown risk.
VGS=±30V: Wide gate drive range, compatible with various PWM controllers and driver ICs, simplifying gate drive design.
Vth=3.5V (typical): Moderate threshold voltage, strong anti-interference capability, suitable for industrial drive environments.
RDS(on)=140mΩ @ VGS=10V: Low on-resistance, low losses under heavy load, effectively reducing heatsink size.
ID=20A: Ample continuous current margin, capable of handling surge demands of inductive loads such as motors and transformers.
Package TO220F: Fully molded isolation structure, allows direct heatsink mounting without insulating pads, facilitating production assembly.
Domain and module applications：
Switching Power Supplies: Superjunction structure reduces high-voltage conduction losses, improves heavy-load efficiency, suitable for flyback, LLC, and other topologies.
LED Lighting Drivers: High-voltage withstand margin combined with low on-resistance improves the reliability and luminous efficacy of constant current power supplies.
Adapters and Chargers: 20A high current capability supports high-power output, TO220F facilitates overall heat dissipation design.
Photovoltaic Inverters: 500V withstand voltage covers DC bus voltage scenarios, low switching losses improve inverter efficiency.
Motor Drive Control: Direct drive from high-voltage bus, strong surge immunity, reduces external protection circuit costs.
Industrial Auxiliary Power Supplies: Wide voltage range and high-voltage withstand characteristics adapt to three-phase applications, high reliability.
Selection Summary: TK19A45D achieves a balance between high withstand voltage, high current capability, and package thermal performance. It is a cost-effective general-purpose choice for 500V high-voltage switching applications, especially suitable for power supply projects with strict requirements on power density and long-term reliability.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
Technical support：
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