BUK9529-100B,127-VB is a Single N-MOS optimized for medium-to-high voltage power switching scenarios, using Trench technology to balance low conduction losses and high switching reliability. The TO220 package offers excellent thermal resistance and heat dissipation, suitable for high-current, high-power industrial applications. The combination of 100V withstand voltage, 70A continuous current capacity, and 17mΩ on-resistance makes it a reliable power switch option for motor drives, power conversion, and battery protection, especially in high-power-density designs requiring long-term stable operation.
VDS=100V: Suitable for 24V/36V/48V/60V systems, provides ample margin for bus voltage spikes and inductive load transients, significantly reduces avalanche breakdown risk. VGS=±20V: Compatible with 5V~15V logic level drives, can flexibly interface with MCUs, PWM controllers, or dedicated gate driver ICs, simplifying drive circuit design. Vth=1.8V (Typical): Effectively turns on under low-voltage drive conditions, supports a wide gate voltage operating range, enhancing system controllability during startup and load transients. RDS(on)=17mΩ @ VGS=10V: Ultra-low on-resistance, drastically reduces full-load conduction loss, effectively suppresses temperature rise, allows for smaller heatsinks or increased allowable operating current. ID=70A: Ample continuous current margin, can confidently handle transient high-current scenarios such as motor stall and capacitor charging inrush, improving system robustness. Package TO220: Through-hole mounting facilitates soldering and heat dissipation, compatible with traditional power board layouts, low thermal resistance, suitable for continuous high-power output applications.
Domain and module applications：
Application Areas and Modules Motor Drive and Control: Low on-resistance and strong surge immunity make it suitable for brushed/brushless motors and power tools, reducing controller heat generation and improving overload protection reliability. Power Conversion and Inverter: Replaces Schottky diodes or older MOSFETs in synchronous rectification, DC-DC boost/buck, and inverter circuits; significant heavy-load efficiency improvement benefits power density upgrades. Battery Protection and Energy Storage System: Fast switching characteristics and 100V withstand voltage match multi-cell lithium battery packs, enabling precise overcurrent and short-circuit protection; low internal resistance reduces self-consumption of the protection board. Automotive and Industrial Auxiliary Power Supply: Wide safe operating area and good TO220 heat dissipation adapt to 12V/24V/48V automotive buses and industrial bus environments, with strong impact resistance. Charging Pile and Communication Power Supply: High current capacity meets the requirements of high-power conversion topologies; low loss reduces overall system temperature rise, improving long-term operational stability. E-bike / Low-Speed Vehicle Controller: 70A current margin covers peak climbing and acceleration demands; 17mΩ on-resistance contributes to higher energy efficiency, extending driving range. UPS and Servo System: Fast recovery and robust switching characteristics suit high-frequency PWM, reducing switching ringing and improving system dynamic response. Selection Summary: BUK9529-100B,127-VB achieves a combination of 17mΩ ultra-low on-resistance and 70A high-current capability at the 100V withstand voltage level, coupled with the efficient heat dissipation characteristics of the TO220 package. It is a cost-effective general-purpose choice for medium-voltage, high-current power switching scenarios, particularly suitable for industrial-grade projects with strict requirements for heat dissipation, reliability, and overload capability.
* 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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