Content last revised on November 16, 2025
Infineon/Siemens BSM150GT120DN2(6) | A Robust Workhorse for Industrial Power Conversion
The Infineon/Siemens BSM150GT120DN2(6) is a testament to engineering endurance. As a cornerstone component in countless industrial systems, this 1200V, 150A sixpack IGBT module delivers a unique blend of reliability, integration, and performance tailored for demanding, cost-sensitive power applications.
Product Highlights at a Glance
Designed for engineers who prioritize operational robustness and simplified assembly, the BSM150GT120DN2(6) offers a compelling feature set:
- Integrated Sixpack Configuration: Contains six IGBTs and six freewheeling diodes in a three-phase bridge topology, dramatically simplifying the design and layout of motor inverters and power converters.
- Proven NPT Technology: Built on Non-Punch-Through (NPT) IGBT technology, renowned for its wide Safe Operating Area (SOA) and exceptional ruggedness under harsh operating conditions.
- Onboard Thermal Sensing: Includes an integrated NTC thermistor, providing crucial real-time temperature feedback to the gate driver and control system for proactive thermal management and fault prevention.
- Industrial Standard Package: Housed in a familiar and widely adopted module package, making it an ideal candidate for both new designs and as a direct replacement in legacy systems.
Key Technical Specifications
The following parameters are critical for design engineers evaluating the BSM150GT120DN2(6) for their power stage. For a complete set of characteristics and performance curves, you can download the full BSM150GT120DN2 datasheet.
| Parameter | Value |
|---|---|
| Maximum Collector-Emitter Voltage (VCES) | 1200 V |
| Continuous Collector Current (IC @ TC=80°C) | 150 A |
| Collector-Emitter Saturation Voltage (VCE(sat), typ. @ IC=150A) | 2.15 V |
| Topology | Sixpack (3-Phase Full Bridge) |
| Isolation Voltage (Visol) | 2500 V (RMS, 1 min) |
| Integrated Features | Fast Freewheeling Diodes, NTC Thermistor |
Core Application Focus: Where the BSM150GT120DN2(6) Excels
While versatile, the BSM150GT120DN2(6)'s architecture makes it exceptionally well-suited for specific applications where reliability and design simplicity are paramount.
- Variable Frequency Drives (VFDs): The sixpack topology is the native configuration for three-phase AC motor drives. This module consolidates the entire power bridge, reducing parasitic inductance between phases, simplifying busbar design, and minimizing assembly time.
- Uninterruptible Power Supplies (UPS): In commercial and industrial UPS systems, the module's proven NPT ruggedness ensures reliable operation during grid instability and high-load transients, safeguarding critical equipment.
- Welding and Induction Heating: These applications demand robust switching under challenging load conditions. The BSM150GT120DN2(6)’s wide SOA (Safe Operating Area) provides the necessary resilience against potential fault conditions.
Technical Deep Dive: NPT Technology vs. Modern Alternatives
A key characteristic of the BSM150GT120DN2(6) is its foundation in NPT IGBT technology. From an engineering perspective, this involves a specific set of trade-offs. NPT IGBTs are known for a positive temperature coefficient of the VCE(sat), which simplifies paralleling. They also offer excellent short-circuit withstand time, a critical factor in preventing catastrophic failure during fault events.
However, compared to modern Trench-Field-Stop (TFS) IGBTs, NPT devices typically exhibit higher conduction losses (higher VCE(sat)) and slower switching speeds. This makes the BSM150GT120DN2(6) an optimal choice for applications operating at lower switching frequencies (typically under 10 kHz), where conduction losses are manageable and the benefits of its robustness and cost-effectiveness outweigh the need for ultimate switching efficiency.
Frequently Asked Questions (FAQ) for Design Engineers
Is the BSM150GT120DN2(6) a good choice for brand new, high-frequency designs?
For new designs targeting the highest possible efficiency with switching frequencies above 15 kHz, a more modern module based on Trench-Field-Stop technology might be preferable due to lower switching losses. However, for cost-driven projects, systems requiring high durability at moderate frequencies, or as a form-fit-function replacement for existing designs, the BSM150GT120DN2(6) remains an excellent and highly reliable choice.
How should I leverage the integrated NTC thermistor?
The integrated NTC is a critical tool for robust system design. It should be connected to an analog input on your microcontroller or a dedicated input on your gate driver board. By continuously monitoring the module's baseplate temperature, your control firmware can implement two key protective functions: trigger an alarm or de-rate the output current if the temperature exceeds a warning threshold, and initiate an immediate shutdown in an over-temperature fault condition, preventing thermal runaway and permanent damage. For deeper insights, exploring resources on IGBT failure analysis can be highly beneficial.
If you have questions about integrating the BSM150GT120DN2(6) into your specific application or need help with cross-referencing, please contact our technical team for expert guidance.
