FSBB20CH120D

FSBB20CH120D is a STMicroelectronics FSBB family half-bridge power module. It contains two high‑current IGBTs (one high-side, one low-side) with their anti-parallel diodes in a common-emitter configuration, packaged as a single power module with an isolated baseplate for heat sinking. It’s designed for high-voltage, high-power motor drives and power-conversion applications.
Key points
- Typical ratings: up to about 1200 V blocking voltage; around 20 A continuous per switch (per leg), suitable for high-speed switching.
- Package: compact power module with gate and emitter connections; low-inductance path and an isolated mounting surface for effective cooling.
- Integration: two switches and diodes in one package, suited for use in a half-bridge configuration; requires an external gate driver and proper DC-bus/thermal design.
- Applications: motor drives (BLDC/AC motors), DC-DC converters, solar inverters, UPS, and other high-voltage power electronics.
Note: Always consult the official datasheet for exact pinout, thermal resistance, safe operating area, and derating guidelines.

Direct equivalents are 1200 V, 20 A IGBT half‑bridge modules with similar FSBB topology and package. Common alternatives: Semikron SKM20 (20 A/1200 V) series, Fuji 2MBI20N‑120 (20 A/1200 V) modules, Mitsubishi 20 A / 1200 V half‑bridge modules (e.g., CM20TU family). Always verify Vce, Ic, switching characteristics, pinout and thermal specs against datasheets before substituting.

Here are typical features of the FSBB20CH120D (Infineon FSBB IPM):
- 1200 V blocking voltage
- 20 A continuous current per half-bridge
- Dual N-channel MOSFETs (high-side and low-side) in one package
- Integrated gate-drive circuitry with bootstrap for high-side drive
- PWM-ready control inputs; logic-compatible signals
- Protective features: undervoltage lockout, overcurrent/short-circuit protection, overtemperature protection
- Shoot-through prevention with configurable dead-time and fault latch/status output
- Isolation between control and power sections
- RoHS-compliant, compact power-module package suitable for motor drives and inverters
Note: exact pinout, electrical specs, and protection details should be confirmed from the latest datasheet.

Pin count: 7 external pins + a metal baseplate (main collector connection).
Function (concise):
- Device type: FSBB20CH120D is a 1200 V, 20 A FSBB half‑bridge IGBT module (two IGBTs with anti‑parallel diodes).
- Pins (typical allocation):
- G1, G2 — gate inputs for IGBT1 and IGBT2
- E1, E2 — main emitter outputs for IGBT1 and IGBT2
- Aux/emitter sense — low‑current emitter/sense connection (used for current sensing or reference)
- Temperature/NTC (or a spare auxiliary pin depending on variant)
- Baseplate — main collector (C) is the module baseplate and is bolted to the heatsink.
For pin numbering and exact functions/locations refer to the module’s official Infineon datasheet/outline drawing for your production variant.

- Manufacturer: Fuji Electric Co., Ltd. (Fuji Electric)
- What kind of company: A Japanese multinational electronics and electrical equipment manufacturer that designs and produces power semiconductors, power modules (such as IGBT modules), and other electrical equipment for industrial, automotive, and energy applications.

FSBB20CH120D is an intelligent power module (IPM) with two high-/low-side switches for high-voltage, high-current half-bridge applications. Common uses include:
- Motor control (BLDC, PMSM, DC motors) in robotics, household appliances, HVAC
- Inverter drives for fans, pumps, tools
- DC-DC and AC-DC power supplies (industrial/telecom)
- Solar inverters and UPS systems
- Automotive power electronics and body electronics
- General high-voltage half-bridge building blocks for industrial drives
Note: exact ratings depend on the specific device variant.

The FSBB20CH120D uses the FSBB (Free-Standing Bridge) power-module package—a dual IGBT/diode half-bridge in a free-standing screw-terminal module designed for heatsinking.