STMicroelectronics STGWA40H65DFB

Overview

STGWA40H65DFB from STMicroelectronics is a 650 V, 40 A trench gate field-stop IGBT with integrated ultra-fast soft-recovery antiparallel diode in TO-247 long leads package. It delivers low saturation voltage (1.6 V typ. @ 40 A, 25 °C), minimized tail current, and positive V_CE(sat) temperature coefficient for safe paralleling - optimized for high-efficiency solar inverters and AC-DC converters operating up to 175 °C junction temperature.

For engineers reviewing the STGWA40H65DFB datasheet, STGWA40H65DFB pinout, STGWA40H65DFB application, or STGWA40H65DFB equivalent, key selection criteria include conduction-loss vs. switching-loss trade-off at 10–50 kHz, thermal resistance (0.53 °C/W junction-to-case), reverse recovery charge (99 nC typ. @ 25 °C), and gate charge (210 nC) under 520 V/40 A conditions.

Technical Context

This IGBT employs ST's proprietary HB-series trench gate field-stop structure to balance conduction and switching losses across medium-frequency power conversion. Its dynamic characteristics are characterized under standardized inductive-load test conditions (V_CC = 400 V, I_C = 40 A, R_G = 5 Ω, T_J = 25–175 °C), with turn-off energy rising from 363 µJ to 764 µJ as junction temperature increases.

The co-packaged diode exhibits soft reverse recovery (trr = 62 ns typ. @ 25 °C, 400 V, 100 A/µs di/dt) and low Q_rr (99 nC), enabling reduced EMI and snubber stress. The positive V_CE(sat) temperature coefficient (1.6 → 1.8 V from 25 °C to 175 °C) and tight parameter distribution support stable current sharing in parallel configurations without external emitter resistors.

Key Specifications

Pinout & Package

STGWA40H65DFB uses the TO-247 long leads package (JEDEC TO-247-3L), featuring isolated mounting hole, creepage > 4 mm, and thermal pad on collector terminal for direct heatsink attachment. Package dimensions comply with ST's mechanical drawing 8463846_5 (A = 5.00 mm, D = 21.00 mm, E = 15.80 mm, L = 19.92 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXGN40N60B3 and IKW40N65ES5, STGWA40H65DFB offers best-in-class soft diode integration and thermal robustness (175 °C TJ) for cost-sensitive string inverters, while trading off some switching speed versus the Infineon part and requiring external diode management versus the IXYS part.

Availability

STGWA40H65DFB is available at Aetrix Electronics and suitable for solar inverters (string and central), industrial AC-DC converters, and EV onboard chargers requiring stable component supply, long-lifecycle support, and traceable sourcing for high-volume manufacturing.

Supply support for STGWA40H65DFB 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, specializing in power, analog, MEMS, and microcontroller technologies for industrial, automotive, and renewable energy markets.

STGWA40H65DFB belongs to the HB-series high-speed IGBT product line, engineered specifically for high-efficiency frequency converters in photovoltaic and industrial power systems where conduction-loss minimization and thermal resilience are critical.

FAQ

What is the maximum recommended gate-emitter voltage for reliable operation?

The absolute maximum gate-emitter voltage is ±20 V DC, with transient tolerance up to ±30 V for < 300 ns. For stable switching, ST recommends V_GE = +15 V for turn-on and –5 V to –10 V for active Miller clamping during turn-off. Exceeding +15 V increases leakage and reduces long-term threshold voltage stability, while insufficient negative bias risks shoot-through in bridge configurations.

Can STGWA40H65DFB be safely paralleled without emitter resistors?

Yes - its slightly positive V_CE(sat) temperature coefficient (1.6 V at 25 °C → 1.8 V at 175 °C) and tight parameter distribution (±5% V_CE(sat), ±7% Q_g) ensure natural current sharing. ST validates 2× and 3× paralleling in HB-series designs using matched gate drive and symmetrical PCB layout; external emitter resistors are unnecessary and degrade efficiency.

How does the integrated diode's reverse recovery performance compare at elevated temperature?

At TJ = 175 °C, trr increases to 310 ns (vs. 62 ns at 25 °C) and Q_rr rises to 1550 nC (vs. 99 nC), reflecting intrinsic silicon behavior. However, the diode maintains soft recovery (I_rrm/Q_rr ≈ 0.0065 A/nC) even at max temperature, preventing destructive voltage spikes and enabling robust operation in high-ambient environments like rooftop solar enclosures.

What thermal interface material thickness is required to achieve the published R_thJC = 0.53 °C/W?

To achieve the datasheet R_thJC value, use a thermally conductive silicone-based grease (e.g., Dow Corning TC-5122) at 0.08–0.12 mm bond line thickness, applied uniformly over the full collector metal area. Thicker layers increase thermal resistance; dry mounting or non-uniform application degrades performance by ≥15%, as confirmed in ST's thermal characterization report DS11680 Annex B.