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2SK1151STR-E-VB Product details

Product introduction:

Imagine this: You are designing a high-voltage auxiliary power supply that needs to handle a 400V bus voltage but only has a load current of 2A. Ordinary MOS transistors either lack sufficient voltage withstand capability or have complex drive requirements. The VBsemi 2SK1151STR-E-VB is designed for this purpose—it integrates 400V withstand voltage, 2A current carrying capacity, and stable Planar technology into the reliable TO252 package, making high-voltage switching design simple and effortless.

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Product parameter:

VB Package Configuration VDS(V) VGS Vthyp(V) ID(A) Rds2.5 Rds4.5 Rds10 Technology
TO252 Single-N 400V 3V 2A 3500(mΩ) Planar
VB Package Configuration VCE VGE VGEth(V) VCEsat15V ICE Technology
TO252 Single-N Planar
VB Package Configuration VDS(V) VGS Vthyp(V) ID(A) Rds18 Technology
TO252 Single-N 400V 3V 2A Planar
VB Package Configuration VDS(V) VGS Vthyp(V) ID(A) Rds6 Technology
TO252 Single-N 400V 3V 2A Planar
VB Package Polarity Vz / VR Pd VF IF IR Cd Type
TO252 Single-N
Voltage 400V, easily handles high-voltage bus applications
Gate drive range ±20V, compatible with common PWM controllers
Threshold voltage 3V, reliable turn-on with standard logic levels
On-resistance 3500mΩ (at 10V drive), typical for high-voltage MOS, balancing losses and cost
Max current 2A, suitable for small to medium power high-voltage topologies

Domain and module applications:


Switching Power Supply (SMPS) Auxiliary Winding Supply – Acts as a high-voltage startup or clamp switch, stable and reliable.
LED Lighting Driver – Used for high-side linear or switching dimming, strong breakdown resistance.
AC-DC Adapters / Chargers – Serves as the primary switch in flyback topologies, offering excellent cost performance.
Industrial Control Power Supplies – Tolerates wide voltage fluctuations, ensuring long-term system operation.
Smart Meters / Metering Equipment – High-voltage interface protection and switching control, safe isolation.
Home Appliance Variable Frequency Drives – Used for high-voltage bus detection or auxiliary power supply, improving overall EMC performance. One-sentence summary: 2SK1151STR-E-VB is not an ordinary MOS tube; it is your "voltage withstand cornerstone" and "stability guarantor" for 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

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