Where is a NTC mounted in a module?

Please contact Fuji Electric Co., Ltd. or your local distributor.

What happens to IGBT modules in a case where an application exceeds the ΔTj power cycle capability?

It will cause a separation of aluminum wire, or a crack in the solder under the chip. Thermal destruction will result from the current concentrating on the relevant part of the chip, or increased thermal resistance.

How works a stencil mask to apply thermal compound and can I purchase it from Fuji?

A stencil mask is a 200 μm-thick, metal plate with multiple holes punched in the compound application area. A compound can be applied with a uniform thickness of 100 μm when clamping the stencil to a heat sink after application. We do not sell stencil masks but we can provide a mask drawing that corresponds […]

Can I get a drawing of the internal chip layout to measure the case temperature TC?

Please contact Fuji Electric Co., Ltd. or your local distributor.

How can we reduce radiation noise?

Radiation noise can be reduced through methods such as reducing the loop current area where noise is generated, or adjusting the gate resistance. For details, refer to IGBT’s Application Manual Chapter 10.

How can we reduce conductive noise?

“Conductive noise can be reduced through methods such as adding an LC filter on the AC power side, adding a ferrite core, or adjusting the gate resistance to suppress dv/dt at the time of switching. For details, refer to IGBT’s Application Manual Chapter 10.”

What types of noise are generated at an inverter unit that has a power semiconductor device built in?

There are two types of noise: conductive noise (noise terminal voltage) and radiation noise. Conductive noise propagates over a conductor or earth wire in a main circuit. It is divided into two groups: normal mode and common mode. Radiation noise is generated within a device and emitted into the air because the device wiring or […]

Is there ΔTc power cycle curve?

Please contact Fuji Electric Co., Ltd. or your local distributor.

What is SCSOA?

SCSOA is an abbreviation of Short Circuit Safety Operating Area. During an incident with an inverter device, such as a load short-circuit, arm short-circuit, or ground fault, a current that is several times higher than the rated current flows in the IGBT. SCSOA is provided to protect the IGBT even during these instances. SCSOA has […]

What is RBSOA?

RBSOA is an abbreviation of Reverse Bias Safety Operating Area. The data sheet contains a characteristic graph describing double the rated voltage and rated current under the condition of maximum continuous operation temperature Tj(op). It illustrates a range of VCE and IC where safe operation is maintained when IGBT is turning off. The operation can […]