STGD25N40LZAG

STMicroelectronics

STMicroelectronics STGD25N40LZAG, Automotive Power Transistor, 435 V Vces, 25 A Ic, 26 nC Qg, 125 W, AEC-Q101, DPAK (TO-252), -55 to 175 °C.

STMicroelectronics STGD25N40LZAG
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[IN STOCK] In Stock: 12 pcs
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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

STGD25N40LZAG specifications
Parameter / AttributeSpecification / Value
Input typeLogic
MountingSurface Mount
Voltage - collector emitter breakdown435 V
Current - collector (Ic)25 A
Current - collector pulsed50 A
Power - max125 W
Operating temperature-55°C ~ 175°C (TJ)
GradeAutomotive
PackageTape & Reel (TR); Cut Tape (CT)
Gate charge26 nC
QualificationAEC-Q101
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Test condition300V, 10A, 1kOhm, 5V
Td (on/off) @ 25°C1.1µs/4.6µs
Vce(on) (Max) @ vge, ic1.25V @ 4V, 6A

Technical details

Automotive IGBT for engine-bay power stages

It blocks 435 V collector-emitter and conducts 25 A continuous, with the junction rated to 175 °C — the temperature grade that matches engine-bay thermal cycling without headroom games.

Total gate charge is 26 nC, measured under the test condition 300 V, 10 A, 1 kOhm gate resistor, 5 V gate drive. The 1.1 µs turn-on and 4.6 µs turn-off delay times at 25 °C mean the gate driver sees moderate capacitive load — a standard automotive gate-driver IC with 2 A peak output handles the switching without external booster stages.

On-state voltage and saturation margin

Vce(on) max is 1.25 V at 4 V gate drive, 6 A collector current. That 1.25 V saturation voltage at a 6 A test point is the conduction loss floor per die; at full 25 A the Vce(on) rises with temperature, so the 125 W package power limit sets the real-world duty-cycle ceiling in a 85 °C ambient environment.

Pulsed current and SOA boundary

Pulsed collector current rating is 50 A — double the continuous 25 A — for short-duration events such as inrush or load dump. The 435 V breakdown gives enough headroom for a nominal 400 V DC bus with the usual 20 % margin for switching overshoot.

The automotive qualification (AEC-Q101) means PPAP documentation is available through the manufacturer channel.

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