STW11NK100Z: High-Performance N-Channel MOSFET by STMicroelectronics

The STW11NK100Z is a premium N-Channel MOSFET from STMicroelectronics, designed for high-voltage, high-current applications. This power MOSFET is part of the company's renowned portfolio of discrete semiconductor products, offering exceptional performance in demanding environments. With its 1000V drain-source voltage rating and robust TO-247-3 package, the STW11NK100Z is engineered for reliability in power electronics applications.

Detailed Technical Specifications

Electrical Characteristics

The STW11NK100Z features:
- Drain-Source Voltage (V_DSS): 1000V
- Continuous Drain Current (I_D): 8.3A @ 25 C
- Pulsed Drain Current (I_DM): 33A
- On-Resistance (R_DS(on)): 1.38 @ V_GS=10V, I_D=4.15A
- Gate Threshold Voltage (V_GS(th)): 4.5V (max)
- Total Gate Charge (Q_g): 162nC @ V_DS=400V

Thermal Properties

- Power Dissipation (P_D): 230W @ T_C=25 C
- Junction-to-Case Thermal Resistance (R _JC): 0.55 C/W
- Operating Junction Temperature: -55 C to +150 C

Package Information

- Package: TO-247-3 (also known as TO-247AC)
- Mounting: Through-hole
- Lead Material: Copper
- Weight: Approximately 3.1g

Performance Advantages

1. Superior Switching Performance

The STW11NK100Z combines low gate charge (162nC) with moderate input capacitance (3500pF), enabling efficient switching performance in power conversion applications. The optimized gate characteristics allow for:
- Reduced switching losses
- Improved efficiency in high-frequency circuits
- Better thermal management

2. Enhanced Power Handling

With its 230W power dissipation capability and low thermal resistance (0.55 C/W junction-to-case), this MOSFET can handle significant power levels when properly heatsinked. The TO-247-3 package provides excellent thermal transfer to heatsinks.

3. Robust Construction

STMicroelectronics' advanced manufacturing processes ensure:
- High avalanche ruggedness
- Excellent dv/dt capability
- Long-term reliability in harsh environments

Comprehensive Applications

Power Supply Systems

The STW11NK100Z is ideal for:
- SMPS (Switch Mode Power Supplies): Particularly in PFC (Power Factor Correction) stages and DC-DC converters
- Inverters: Both for renewable energy systems and industrial applications
- UPS Systems: Providing reliable high-voltage switching

Motor Control Solutions

Excellent for:
- AC Motor Drives: Including variable frequency drives (VFDs)
- Servo Controllers: Where precise power control is required
- Industrial Automation: In motor control centers and power distribution

Specialty Applications

- Electronic Ballasts: For high-intensity discharge lamps
- Welding Equipment: Providing reliable power switching
- Medical Power Systems: Where reliability is critical

Design Considerations

Gate Drive Requirements

For optimal performance:
- Recommended gate drive voltage: 10V for full enhancement
- Maximum gate voltage: 30V
- Use low-impedance gate drivers for fast switching

Thermal Management

- Always use appropriate heatsinking for power levels above 50W
- Consider thermal interface materials for optimal heat transfer
- Monitor case temperature during operation

Protection Circuits

- Implement overvoltage protection (snubber circuits)
- Consider current limiting in high-power applications
- Use proper PCB layout techniques to minimize parasitic inductance

Comparative Advantages

Compared to similar MOSFETs in its class, the STW11NK100Z offers:
- Better V_DSS rating than many competitors (1000V vs typical 600-800V)
- Lower R_DS(on) than many comparable high-voltage MOSFETs
- More robust package than TO-220 alternatives
- STMicroelectronics' proven reliability and quality

Purchasing Information

The STW11NK100Z is available through authorized distributors worldwide. Typical lead times are 8-12 weeks for production quantities. Evaluation boards and reference designs are available to assist with prototyping and development.

Conclusion

The STW11NK100Z represents STMicroelectronics' commitment to high-performance power semiconductors. Its combination of high voltage capability, low on-resistance, and robust packaging make it an excellent choice for designers working on:
- Next-generation power supplies
- Industrial motor controls
- Renewable energy systems
- High-reliability power electronics

For engineers seeking a reliable, high-performance 1000V MOSFET, the STW11NK100Z delivers exceptional value and performance. Its technical specifications, application flexibility, and STMicroelectronics' quality assurance make it a top choice for demanding power electronics designs.

Contact our technical sales team today to discuss how the STW11NK100Z can enhance your power electronics projects and to request samples or additional technical information.