STMicroelectronics STGW40H120DF2

Overview

STGW40H120DF2 from STMicroelectronics is a 1200 V, 40 A trench gate field-stop IGBT with integrated fast-recovery antiparallel diode in TO-247 package. It delivers V_CE(sat) = 2.1 V (typ.) at I_C = 40 A and T_J = 25 °C, 5 μs short-circuit withstand time at T_J = 150 °C, and R_thJC = 0.32 °C/W for the IGBT die - optimized for high-frequency converters requiring low conduction + switching loss trade-off.

For engineers reviewing the STGW40H120DF2 datasheet, STGW40H120DF2 pinout, STGW40H120DF2 application, or STGW40H120DF2 equivalent, key selection criteria include its positive V_CE(sat) temperature coefficient enabling safe paralleling, minimized tail current for reduced E_off, and tight parameter distribution across production lots - critical for photovoltaic inverters and UPS systems demanding thermal stability and reliability at 175 °C junction operation.

Technical Context

This IGBT employs ST's proprietary trench gate field-stop structure to simultaneously suppress tail current and lower switching losses while maintaining robust short-circuit ruggedness. Its dynamic characteristics - including t_d(off) = 152 ns (typ.), E_off = 1.32 mJ (T_J = 25 °C), and Q_gc = 85 nC - reflect optimization for 10–50 kHz hard-switched topologies with 10 Ω gate drive.

The co-packaged diode features t_rr = 488 ns (typ.), Q_rr = 2.59 µC, and E_rr = 0.38 mJ at I_F = 40 A and T_J = 25 °C, with soft recovery behavior confirmed by dI_rr/dt = 406 A/µs - minimizing voltage overshoot and EMI in bidirectional power stages.

Key Specifications

Pinout & Package

TO-247 package with 3-pin configuration: Pin 1 = Gate (G), Pin 2 = Collector (C), Pin 3 = Emitter (E). Standard leadframe layout compatible with industry-standard mounting hardware and thermal interface materials.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage IGBT applications.

Compared with IXGN40N120B3 and IKW40N120H3, STGW40H120DF2 uniquely combines integrated diode, 5 µs short-circuit rating, and positive V_CE(sat) tempco - making it optimal for paralleled, high-reliability inverter designs where thermal stability and fault tolerance are non-negotiable.

Availability

STGW40H120DF2 is available at Aetrix Electronics and suitable for photovoltaic inverters, uninterruptible power supply systems, and welding equipment requiring stable component supply across multi-year production cycles and lifecycle transitions.

Supply support for STGW40H120DF2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

STGW40H120DF2 belongs to the H-series IGBT product line, engineered specifically for high-efficiency, high-frequency power conversion in renewable energy and industrial motor control applications - balancing conduction and switching losses at 1200 V rating.

FAQ

What is the maximum allowable gate-emitter voltage for STGW40H120DF2?

The absolute maximum gate-emitter voltage is ±20 V for continuous operation and ±30 V for transient pulses ≤10 µs with duty cycle ≤0.01. Exceeding ±20 V continuously risks oxide degradation and threshold voltage shift; gate drive circuits must include clamping or Zener protection to maintain long-term reliability under switching transients.

Does STGW40H120DF2 require a negative gate voltage for reliable turn-off?

No - STGW40H120DF2 achieves robust turn-off with 0 V gate bias due to its trench gate field-stop structure and low Miller capacitance (C_res = 80 pF). However, applying –5 V to –10 V improves noise immunity in high-dV/dt environments and reduces risk of spurious turn-on during bridge-leg commutation.

How does the integrated diode differ from standard FRD counterparts?

The co-packaged diode features soft reverse recovery (dI_rr/dt = 406 A/µs), low Q_rr = 2.59 µC, and t_rr = 488 ns at 40 A - optimized to match the IGBT's switching speed. Unlike generic FRDs, its recovery characteristics are tightly coupled to the IGBT die's thermal profile, ensuring consistent performance across temperature and eliminating thermal mismatch issues in shared heatsink layouts.

Can STGW40H120DF2 be paralleled without emitter resistors?

Yes - its slightly positive V_CE(sat) temperature coefficient and tight parameter distribution (±5% typical) enable stable current sharing across multiple devices at 175 °C junction temperature. Parallel operation has been validated in ST application notes using matched gate drive and symmetrical PCB layout, with no external emitter resistors required for balanced static current division.