STMicroelectronics STP3NB100

Summary of STP3NB100 Power MOSFET by STMicroelectronics

The STP3NB100 from STMicroelectronics is a high-voltage, N-channel power MOSFET offered in a TO-220 package. Designed to support demanding power conversion applications, this device features a breakdown voltage of 1000 V and a continuous drain current of 3 A (at case temperature). With a maximum power dissipation of 100 W, the STP3NB100 is built for robust operation in high-stress environments. Its high-voltage capability makes it particularly suited for switch-mode power supplies (SMPS) and industrial power systems, where a combination of reliability and efficient switching is critical. As part of STMicroelectronics’ advanced MOSFET portfolio, the STP3NB100 incorporates cutting-edge silicon process technologies to deliver strong both switching and energy-handling attributes needed by power conversion design engineers.

Main Characteristics and Fundamental Technologies of STP3NB100 Power MOSFET from STMicroelectronics

At the heart of the STP3NB100 lies the proprietary MESH OVERLAY™ process, a high-voltage MOSFET technology by STMicroelectronics. This architecture enables several key attributes relevant for power design:

Typical on-resistance ($R_{\mathrm{DS(on)}}$) of 5.3 Ω, representing efficient conduction at rated current.

Extremely high dv/dt capability, offering robust resilience against voltage transients encountered in real-world switching conditions.

Guaranteed avalanche ruggedness, as demonstrated through 100% production testing.

Very low intrinsic capacitances, leading to rapid charging and discharging cycles.

Minimized gate charge, which directly benefits fast switching while reducing gate drive energy losses.

The device’s layout utilizes a strip-cell topology with advanced edge termination, further driving down on-resistance relative to silicon area and maximizing durability under high voltage and current stress. These features collectively make the STP3NB100 a strong candidate in applications requiring not just high-voltage hold-off and current handling, but also efficiency and system-level robustness.

Electrical and Thermal Specifications for STP3NB100 Power MOSFET by STMicroelectronics

The STP3NB100 delivers strong core performance metrics for engineers specifying power semiconductor switches:

Maximum drain-source voltage ($V_{\mathrm{DSS}}$): 1000 V

Continuous drain current: 3 A (case temperature limited)

Pulse drain currents—when properly managed within safe operating area—can be considerably higher, supporting transient overload handling.

On-resistance ($R_{\mathrm{DS(on)}}$): Typical value of 5.3 Ω, balancing conduction loss with device area.

Maximum power dissipation: 100 W (case, $T_\mathrm{C}$ limited)

Very low gate charge, with dynamic switching performance characterized under test circuits using both resistive and inductive loads.

The device supports high-speed switching both ON and OFF, through controlled switching times and low capacitances. Its avalanche ruggedness ensures the device can absorb specified unclamped energy events, which is crucial for MOSFETs in applications with noisy or inductive loads. Thermal metrics, including junction-to-case thermal resistance, enable straightforward integration into designs with heat sinking or other cooling solutions.

Physical Design and Packaging Information for STP3NB100 Power MOSFET from STMicroelectronics

The STP3NB100 is packaged in the industry-standard TO-220, providing mechanical and thermal advantages for through-hole power assembly. The TO-220 package is recognized for:

Efficient heat transfer from silicon die through the tab to external heat sinks.

Proven reliability in harsh thermal cycling environments.

Robust mechanical leads compatible with hand and automated assembly.

Clear identification of source, drain, and gate pins.

Complementary to the STP3NB100, the STP3NB100FP variant is available in a TO-220FP (Fullpack), a fully insulated package that electrically isolates the tab, improving safety and system integration for certain applications.

Intended Applications and Common Use Cases of STP3NB100 Power MOSFET by STMicroelectronics

The primary target applications for the STP3NB100 are in high-voltage and high-speed switching circuits. Key use cases include:

Switch-mode power supplies (SMPS): The device’s 1000 V rating and dv/dt capability are well-matched for primary-side switching in off-line power architectures.

DC-AC converters for welding equipment: The ruggedness and efficiency are suited for industrial DC-AC power conversion subjected to highly variable load and transient conditions.

Other high-current switching applications: Systems that benefit from avalanche energy handling and rapid, efficient switching choose the STP3NB100 for its balance of voltage, current, and package performance.

Engineers should consider STP3NB100 when designing for environments prone to voltage spikes, inductive switching, or where efficient heat removal is required via TO-220 mounting options.

Reliability and Standards Compliance for STP3NB100 Power MOSFET from STMicroelectronics

The STP3NB100 demonstrates high levels of product reliability, with MOSFETs subjected to 100% avalanche testing prior to shipment. Environmental and compliance classifications for the STP3NB100 include:

Moisture Sensitivity Level (MSL): Level 1 (unlimited floor life), supporting flexible inventory management.

REACH unaffected, ensuring compatibility with current European chemical safety regulations.

Export control classification: EAR99.

The device is not designed for use in life-support applications without direct manufacturer approval.

These parameters make the STP3NB100 suitable for use in a global supply context across a wide range of industrial power conversion products.

Possible Alternative or Replacement Devices for STP3NB100 Power MOSFET by STMicroelectronics

When evaluating or sourcing the STP3NB100, engineers and procurement staff may consider the STP3NB100FP as an alternative with the same silicon and electrical ratings but in a fully insulated TO-220FP package. For applications with slightly different mechanical or circuit needs, examining the wider STMicroelectronics PowerMOS portfolio—particularly those with similar voltage and current ratings and MESH OVERLAY™ process—can serve as potential replacements.

If substitutes from other manufacturers are required, important parameters to match include:

N-channel topology

Minimum 1000 V drain-source voltage

3 A continuous current (with consideration for pulse overload handling)

Comparable $R_{\mathrm{DS(on)}}$ around 5.3 Ω

Package compatibility, preferably TO-220 or equivalent for existing board layouts

It is recommended to cross-verify all device-specific parameters such as gate charge, dv/dt rating, and avalanche energy against system requirements before component replacement or substitution.

Conclusion

The STP3NB100 power MOSFET by STMicroelectronics stands out as a robust, high-voltage N-channel switch tailored for modern power supply and high-voltage conversion applications. With advanced process technology, proven ruggedness, and industry-standard mechanical compatibility, the STP3NB100 enables reliable and efficient power system design. By systematically considering its electrical attributes, application suitability, and replacement options, engineers and sourcing professionals can confidently specify the STP3NB100 in demanding projects requiring both performance and longevity.