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Home Blog 6MBI100S-120 IGBT Module Explained: Alternatives, Features, and Specs

6MBI100S-120 IGBT Module Explained: Alternatives, Features, and Specs
2025-09-09 1379

The Fuji Electric 6MBI100S-120 is a high-performance IGBT module designed to deliver efficiency, durability, and versatility across a wide range of industrial applications. With its 1200 V / 100 A rating, compact 6-pack configuration, and advanced NPT technology, it ensures robust operation under demanding conditions. This article provides an in-depth look at its specifications, features, packaging, circuit design, alternatives, and practical considerations to help you make informed decisions.

Catalog

6MBI100S-120

6MBI100S-120 Overview

The Fuji Electric 6MBI100S-120 is a compact and durable 6-pack IGBT module rated for 1200 V, 100 A, designed for reliable performance in medium-power applications. Featuring NPT technology, it offers robust short-circuit capability, low conduction losses, and soft switching characteristics that minimize EMI and thermal stress. Its solderable package makes it suitable for PCB mounting, supporting efficient designs in drives, supplies, and industrial systems.

Beyond the standard model, variants like the 6MBI100S-120-52 provide lower Vce(sat) and soft-recovery free-wheeling diodes for higher efficiency, while the 6MBI100S-120-02 shares core specifications but is largely discontinued, available only in surplus channels. Together, these modules are well-suited for applications in AC/DC motor drives, servo amplifiers, UPS, and welding systems, offering dependable performance under demanding conditions.

If you are interested in purchasing the 6MBI100S-120, feel free to contact us for pricing and availability.

6MBI100S-120 Alternatives

Alternative Model
 Description
6MBI100S-120-52
 An optimized variant featuring lower Vce(sat) and soft-recovery free-wheeling diodes delivering better efficiency, reduced EMI, and enhanced thermal performance.
6MBI100S-120-02
 A discontinued S-Series version with similar voltage/current specs, now mostly available as surplus or refurbished units.
6MBI100U4-120
 An alternative within Fuji’s lineup offering comparable power and voltage ratings in a different series.
6MBI150U4-120
 A Fuji module with similar construction and rating but with higher current handling (150 A), useful where greater margin is acceptable.
6MBI100S-120-50
 Another variant used for similar applications; appears in product listings and is functionally akin to the main model.
6MBI100VA-120-50
 A related module with analogous specifications, listed among Fuji’s S-Series alternatives.

6MBI100S-120 Circuit Diagram

6MBI100S-120 Circuit Diagram

The equivalent circuit diagram of the 6MBI100S-120 illustrates its internal 6-pack IGBT configuration. Each pack consists of an Insulated Gate Bipolar Transistor (IGBT) paired with an anti-parallel free-wheeling diode. These pairs are arranged in three half-bridge units, enabling three-phase inverter operation.

The upper and lower IGBTs within each leg allow current control in both directions, while the diodes provide a safe path for reverse currents during switching transitions. Terminals 21, 13, and 20 represent the main DC bus connections, while the gate and emitter pins (1–2, 5–6, 9–10) control individual IGBT switches. The unused pins (16, 18) indicate no internal connection.

6MBI100S-120 Packaging Diagram

6MBI100S-120 Packaging Diagram

The outline drawing of the 6MBI100S-120 shows the detailed physical dimensions of the module, ensuring accurate integration into power electronic systems. The overall footprint measures 122 mm × 62 mm, with a height of about 20.5 mm, making it a compact yet robust package suitable for high-power applications.

The diagram highlights the pin layout and spacing, where control and power terminals are clearly arranged for straightforward PCB mounting. It also specifies the mounting hole positions, with precise distances provided for secure mechanical fixing and reliable heat dissipation. These standardized dimensions guarantee compatibility with heatsinks and allow easy replacement with equivalent modules.

6MBI100S-120 Maximum Ratings

Item
 Symbol
 Ratings (25°C / 80°C)
 Units
Collector-Emitter Voltage
 VCES
 1200
 V
Gate-Emitter Voltage
 VGES
 ±20
 V
Collector Current (Continuous)
 IC
 150 / 100
 A
Collector Current (1 ms Pulse)
 IC PULSE
 300 / 200
 A
Collector Current (Continuous, reverse)
 -IC
 100
 A
Collector Current (1 ms Pulse, reverse)
 -IC PULSE
 200
 A
Maximum Power Dissipation
 PC
 700
 W
Operating Temperature
 Tj
 +150
 °C
Storage Temperature
 Tstg
 -40 ~ +125
 °C
Isolation Voltage (A.C. 1 min)
 Vis
 2500
 V
Mounting Screw Torque
 –
 3.5 (Recommended: 2.5 ~ 3.5, M5)
 Nm

6MBI100S-120 Characteristics

Category
 Item
 Symbol
 Test Conditions
 Min.
 Typ.
 Max.
 Units
Electrical
 Zero Gate Voltage Collector Current
 ICES
 VGE=0V, VCE=1200V
 –
 –
 1.0
 mA
Gate-Emitter Leakage Current
 IGES
 VGE=±20V, VCE=0V
 –
 –
 200
 nA
Gate-Emitter Threshold Voltage
 VGE(th)
 VCE=20V, IC=100mA
 5.5
 7.2
 8.5
 V
 
Collector-Emitter Saturation Voltage
 VCE(sat)
 VGE=15V, IC=100A, Tj=25°C
 –
 2.3
 2.6
VGE=15V, IC=100A, Tj=125°C
 –
 2.8
Input Capacitance
 Cies
 VGE=0V, VCE=10V, f=1MHz
 –
 12000
 –
 pF
Output Capacitance
 Coes
 –
 2500
 –
Reverse Transfer Capacitance
 Cres
 –
 2200
 –
Turn-On Time
 ton
 VCC=600V, IC=100A, VGE=±15V, RG=12
 
Inductive load
 –
 0.35
 1.2
 µs
Turn-On Delay Time
 td(on)
 –
 0.25
 0.6
Rise Time
 tr
 –
 0.10
Turn-Off Time
 toff
 –
 0.45
 1.0
Turn-Off Delay Time
Fall Time
 td(off)
tf
 –
 0.08
 0.3
–
Diode Forward Voltage
 VF
 IF=100A, VGE=0V, Tj=25°C
 –
 2.5
 3.3
 V
IF=100A, VGE=0V, Tj=125°C
 –
 2.0
 –
Reverse Recovery Time
 trr
 IF=100A
 –
 –
 350
 ns
Thermal
 Thermal Resistance (IGBT)
 Rth(j-c)
 Junction-to-case
 –
 –
 0.18
 °C/W
Thermal Resistance (Diode)
 Rth(j-c)
 Junction-to-case
 –
 –
 0.36
Thermal Resistance (Compound)
 Rth(c-f)
 With thermal compound
 –
 0.05
 –

6MBI100S-120 Features

• Advanced NPT Technology: Ensures robust performance and improved reliability under high-voltage stress.

• Compact Solderable Package: Designed for efficient PCB mounting and easy integration into power systems.

• Wide Short-Circuit SOA: Capable of withstanding up to 10 × IC in square Safe Operating Area conditions.

• High Short-Circuit Withstand Capability: Provides durability and protection under fault conditions.

• Stable Switching Characteristics: Minimal temperature dependence of turn-off switching losses.

• Low Conduction and Switching Losses: Enhances system efficiency and reduces power dissipation.

• Soft Switching Behavior: Limits EMI generation and improves performance in sensitive environments.

• Integrated Free-Wheeling Diodes: Offers efficient reverse recovery and reduced stress on external components.

• Optimized Thermal Performance: Low thermal resistance supports effective heat dissipation and longer lifespan.

• High Isolation Voltage (2500 V AC/min): Guarantees safe operation in industrial and high-power applications.

6MBI100S-120 Applications

• High Power Switching – Reliable operation in high-current circuits.

• AC Motor Control – Drives and regulates AC motors.

• DC Motor Control – Efficient control of DC motors.

• Uninterruptible Power Supply (UPS) – Stable backup power conversion.

• Servo Drive Systems – Precise motion control for automation.

• Welding Equipment – Robust power handling for welders.

• Renewable Energy Inverters – Converts solar and wind energy.

• Industrial Power Converters – Reliable switching for heavy-duty use.

• HVAC Systems – Improves efficiency in large climate systems.

• Railway Traction Drives – Dependable power for transport systems.

6MBI100S-120 Issues and Solution

• Overheating and Thermal Stress. Prevented by using proper heatsinks, thermal compound, and cooling systems to maintain safe case temperature.

• Short-Circuit and Overcurrent. Mitigated by employing fast protection circuits like desaturation detection, current sensing, and fuses.

• Gate Drive Mismanagement. Solved by applying correct gate voltage, using proper resistors, and optimizing the driver design.

• Mechanical Stress and Mounting. Avoided by tightening screws within the recommended 2.5–3.5 Nm torque range and ensuring even pressure.

• Electrical Noise and EMI. Reduced by adding snubber circuits, optimizing PCB layout, and using shielding techniques.

• Aging and Reliability Degradation. Minimized by applying thermal derating, preventive maintenance, and monitoring module health.

6MBI100S-120 vs. 6MBI100S-120-52 Comparison

Feature / Specs
 6MBI100S-120
 6MBI100S-120-52
Series
 Fuji S-Series
 Fuji S-Series (enhanced version)
IGBT Technology
 NPT (Non-Punch Through)
 NPT with improved switching characteristics
Configuration
 6-pack (3 half-bridge units)
 6-pack (3 half-bridge units)
Collector-Emitter Voltage (VCES)
 1200 V
 1200 V
Collector Current (IC)
 150 A (Tc=25°C) / 100 A (Tc=80°C)
 150 A (Tc=25°C) / 100 A (Tc=80°C)
Pulse Collector Current
 300 A / 200 A
 300 A / 200 A
Isolation Voltage
 2500 V AC/min
 2500 V AC/min
Power Dissipation (PC)
 700 W
 700 W
Operating Temperature
 –40°C to +150°C
 –40°C to +150°C
Switching Losses
 Standard switching loss values
 Lower switching loss with optimized design
Diode Characteristics
 Standard FWD
 Soft-recovery free-wheeling diode (improved)
VCE(sat) (Saturation Voltage)
 2.0–2.5 V (typical)
 Lower than standard, reducing conduction loss
Switching Behavior
 Soft switching
 Softer, with improved EMI performance
Thermal Resistance (Rth)
 0.18 °C/W (IGBT), 0.36 °C/W (Diode)
 Similar values, optimized for better cooling
Mechanical Package
 Solderable PCB-mount package
 Same package dimensions (interchangeable)
Applications
 AC/DC motor drives, UPS, welding, servo systems
 Same, but better suited for efficiency-critical systems

6MBI100S-120 Manufacturer

The 6MBI100S-120 is manufactured by Fuji Electric Co., Ltd., a globally recognized Japanese company specializing in power electronics, industrial systems, and energy solutions. Founded in 1923, Fuji Electric has built a strong reputation for developing advanced semiconductor devices, including IGBT modules, power MOSFETs, and rectifiers, that drive efficiency and reliability in high-power applications. With a focus on innovation, quality, and sustainability, Fuji Electric supplies components widely used in renewable energy, transportation, industrial automation, and power conversion systems.

Conclusion

The 6MBI100S-120 is recognized as a reliable solution for power conversion, motor drives, and industrial systems requiring consistent performance and long-term stability. Its strong electrical characteristics, optimized thermal management, and multiple variants make it a flexible choice across industries. By combining proven Fuji Electric engineering with adaptability in design, this module continues to support modern applications where efficiency and reliability are paramount.

Datasheet PDF

6MBI100S-120 Datasheets:

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Frequently Asked Questions [FAQ]

1. How does the 6MBI100S-120 improve system efficiency?

It reduces conduction and switching losses, features soft switching, and integrates diodes for smoother current handling.

2. What cooling methods are recommended for the 6MBI100S-120?

Proper heatsinks, thermal grease, and in some cases forced air or liquid cooling ensure stable operation under heavy load.

3. Is the 6MBI100S-120 interchangeable with other modules?

Yes, it shares package dimensions with variants like the 6MBI100S-120-52, making replacements straightforward.

4. What is the isolation voltage of the 6MBI100S-120?

It has a 2500 V AC/min isolation voltage, providing safe separation between power and control circuits.

5. What industries commonly use the 6MBI100S-120?

It is widely applied in motor drives, UPS, welding equipment, HVAC systems, and railway traction drives.

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