You can verify the IGBT by checking the leakage current between G and E, and C and E, using a transistor curve tracer (CT). Simple failure diagnosis can also be done using a voltage, resistance tester in place of a CT. For details, refer to Application Manual Chapter 4-2.
FAQ Categories: Discrete IGBT
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Is there any quick way to determine the quality of IGBT before mounting?
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Is it possible to get a product which is not in the catalog? Does Fuji make customized products?
Please contact Fuji Electric Corp. of America or your local sales representative or distributor to answer your question.
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Is there any quality difference between products made in Japan and those made overseas?
Fuji Electric Corp. of America enforces the same quality standard for product management at all locations, regardless of where the manufacturing sites are.
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Where are Fuji semiconductor products manufactured?
The semiconductor products of Fuji Electric Corp. of America are manufactured at its six sites in Japan (including Matsumoto Factory, Yamanashi Factory, Fuji Electric Power Semiconductor Co., Ltd., and Fuji Electric Tsugaru Semiconductor Co., Ltd.), and three overseas sites (Fuji Electric (ShenZhen) Co., Ltd., Fuji Electric Philippines, Inc., and Fuji Electric (Malaysia) Sdn. Bhd.).
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What is the case temperature (Tc)?
Case temperature (Tc) is the temperature on the module copper base surface right under a semiconductor chip where the temperature is the highest.
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What is the junction temperature (Tj)?
Junction temperature is the temperature at joints on a semiconductor chip.
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Can the voltage exceed IGBT’s maximum collector-emitter voltage (VCES) for a short time?
Maximum collector-emitter voltage (VCES) is specified as the maximum rating in the relevant specifications. The voltage should never exceed this value.
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How do I read IGBT module model types?
Refer to “Part numbers” in the Semiconductors General Catalog.
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What is a RB-IGBT?
It stands for Reverse Blocking Insulated Gate Bipolar Transistor. Reverse-parallel connection of RB-IGBT enables both way switching. It is incorporated in AT-NPC (Advanced T-type Neutral Point Clamped) 3-level inverters, to increase the power conversion efficiency because there are less current passing elements.
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Why is FWD required?
Conventional IGBT elements are not capable of blocking a reverse-withstand voltage. When an inverter circuit is used to drive an inductive load like in a motor, the load current will continue flowing in the reverse direction (emitter to collector) at the time of switching. This may damage the IGBT. The IGBT is protected by a commutating load current in a diode (freewheeling diode: FWD) connected inversely in parallel.
