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TK8A55DA(STA4,Q,M)-VB Product details
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Are you designing a high-efficiency switching power supply, needing to handle a 650V high-voltage bus while also maintaining a 10A current output capability? Ordinary high-voltage MOSFETs either have high conduction losses or require overly complex drive circuits. The VBsemi TK8A55DA is designed for this – it uses a TO220F insulated package, organically combining 650V drain-source voltage, 10A current capability, and 830mΩ on-resistance, providing a reliable and simple power switch solution for AC-DC power supplies, inverters, and industrial control.
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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 | 650V | 3.5V | 10A | 830(mΩ) | Planar |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | Planar |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 650V | 3.5V | 10A | Planar |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 650V | 3.5V | 10A | Planar |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| TO220F | Single-N |
Voltage 650V, easily handles high-voltage spikes
Gate drive range ±30V, compatible with wide-range drive circuits
Threshold voltage 3.5V, stable turn-on at typical drive levels
On-resistance 830mΩ (at 10V drive), controllable loss in high-voltage scenarios
Maximum current 10A, TO220F package provides better heat dissipation
Planar technology – mature and reliable, strong surge capability
Domain and module applications：
Switching Power Supplies / Adapters – Acts as the main high-voltage switch in flyback or forward topologies, stable and efficient.
LED Driver Power Supplies – Withstands wide input voltage fluctuations, providing a solid power platform for constant current control.
Inverters / UPS – Performs power conversion on the high-voltage bus side, ensuring continuous system operation.
Industrial Control Auxiliary Power Supplies – Adapts to harsh grid environments, improving long-term equipment reliability.
PFC Power Factor Correction – Handles high-frequency switching tasks in the boost stage, reducing losses and temperature rise.
Induction Cooker / Microwave Oven High-Voltage Power Supply – Handles momentary surges with robust voltage and current capability. One-sentence summary: TK8A55DA is not an ordinary MOS tube; it is the "reliable cornerstone" and "efficiency balancer" for your high-voltage power supply design.
* 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：
* If you have any questions about the product, please fill out the form to submit, we will reply you within 24 hours
