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STMicroelectronics STGD25N40LZAG

STGD25N40LZAG Automotive IGBT, 435V 25A, AEC-Q101, DPAK

MPNSTGD25N40LZAG
End of Life

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.

$1.98Ref. price · indicative, final on quote
PackagingTO-252-3, DPak (2 Leads + Tab), SC-63
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STGD25N40LZAG specifications
ParameterValue
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

Product 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.

Frequently asked questions

What is the gate charge of STGD25N40LZAG?

Total gate charge is 26 nC, specified under the test condition 300 V, 10 A, 1 kOhm gate resistor, 5 V gate drive. This is the total charge the gate driver must supply per switching cycle to turn the IGBT fully on.

Can STGD25N40LZAG replace STGD20N40LZ?

The STGD25N40LZAG has a higher continuous current rating (25 A vs 20 A) and a higher breakdown voltage (435 V vs 400 V) than the STGD20N40LZ. It is pin-compatible in the same DPAK package, so it can serve as an upgrade for the same footprint, provided the load and bus voltage are within the 20N40LZ's original limits.