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2SK4085LS-CBC11-VB Product details
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2SK4085LS-CBC11-VB is a Single N-MOS optimized for high-voltage power switching scenarios, using the Planar process to balance low conduction losses and high reliability. The TO220F fully isolated package facilitates heat sink installation without the need for additional insulating pads, offering significant advantages in industrial power supplies and high-voltage applications. The combination of 550V withstand voltage, 18A current capability, and 260mΩ on-resistance makes it a reliable power selection for high-voltage DC-DC converters, PFC circuits, inverters, and switching power supplies, especially suitable for systems with high requirements for voltage margin and thermal stability.
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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 | 550V | 3V | 18A | 260(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 | 550V | 3V | 18A | Planar |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| TO220F | Single-N | 550V | 3V | 18A | Planar |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| TO220F | Single-N |
VDS=550V: Suitable for high-voltage scenarios such as three-phase 380V rectification, photovoltaic boost, and industrial bus, providing ample voltage margin to enhance system surge immunity.
VGS=±30V: Wide gate drive tolerance, compatible with various PWM controllers and driver ICs, reducing the risk of gate overvoltage breakdown.
Vth=3V (Typical): Moderate turn-on threshold, fully enhances with standard 10V~15V gate drive, balancing noise immunity and drive compatibility.
RDS(on)=260mΩ @ VGS=10V: Achieves relatively low on-resistance in high-voltage MOSFETs, effectively reducing full-load losses and easing heatsink requirements.
ID=18A: Ample continuous current margin, covering the high peak current demands of most medium-to-high-power switching power supplies and motor drives.
Package TO220F: Fully molded isolation structure, heatsink can directly contact the case, simplifying system assembly process, improving production efficiency and safety.
Domain and module applications：
Switching Power Supplies (SMPS): The low-loss characteristics of the high-voltage MOS improve overall efficiency, suitable for main switch applications in flyback, forward, and LLC topologies.
PFC Power Factor Correction: Large voltage margin, strong resistance to grid fluctuations, 18A current capability meets 1kW-level PFC stage design.
Photovoltaic Inverters and Energy Storage Systems: 550V withstand voltage adapts to string-type photovoltaic boost circuits; Planar technology provides stable and reliable switching performance.
Industrial Motor Drives: In variable frequency drives and servo drives powered by high-voltage buses, the TO220F package facilitates heat dissipation design, reducing system cost.
UPS Uninterruptible Power Supplies: Supports high-voltage battery packs and bus voltages, strong short-circuit withstand capability, suitable for standby and online UPS power stages.
Welding Machines and Cutting Power Supplies: High voltage withstand and low on-resistance balance heavy-load output, improving equipment durability and welding stability.
Charging Pile Auxiliary Power Supplies: Wide VGS range simplifies drive circuits, stably copes with wide input voltage and harsh ambient temperatures. Selection Summary: The 2SK4085LS-CBC11-VB achieves a good balance between high voltage withstand, current capability, and package ease of use. It is a cost-effective general-purpose choice for 550V high-voltage switching applications, especially suitable for industrial-grade projects with strict requirements on reliability, heat dissipation, and assembly efficiency.
* 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
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