STGD25N40LZAG - 25A 400V IGBT | STMicroelectronics | D2PAK
MPN: STGD25N40LZAG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for STGD25N40LZAG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STGD25N40LZ
✅ Drop-In📋 Reference alternative (not in catalog)
STGD25N40LZAG
✅ Drop-In✓ 99,999 In Stock
$1.85 / Unit
View Datasheet →IKW25N40T
✅ Drop-In📋 Reference alternative (not in catalog)
FGA25N40L
✅ Drop-In📋 Reference alternative (not in catalog)
STGD25N40LZAG Maximum Ratings & Electrical Characteristics
| Collector-Emitter Voltage (VCE) | 400 V |
| Continuous Collector Current (IC) at 25°C | 25 A |
| Continuous Collector Current (IC) at 100°C | 16 A |
| Pulsed Collector Current (ICM) | 75 A |
| Gate-Emitter Voltage (VGE) | ±20 V |
| Saturation Voltage (VCE(sat)) | 1.5 V typical at 25A |
| Fall Time (tf) | 45 ns |
| Total Switching Energy (Ets) | 0.35 mJ |
| Maximum Junction Temperature (Tj) | 150 °C |
| Thermal Resistance (RthJC) | 1.5 °C/W |
| Package | D2PAK (TO-263) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Halogen Free | Yes |
| Integrated Diode | Yes |
STGD25N40LZAG Pin Configuration
| Pin 1 | Gate — Gate drive input |
| Pin 2 | Collector — Collector terminal |
| Pin 3 | Emitter — Emitter terminal |
| Pin 4 | Collector — Collector terminal (tab) |
Safe Operating Area
Typical Applications
STGD25N40LZAG is suitable for 6 applications: Motor Control, Uninterruptible Power Supplies (UPS), Solar Inverters, Welding Equipment, Power Factor Correction (PFC), Induction Heating.
Motor Control
The STGD25N40LZAG is ideal for motor control applications such as industrial drives and home appliances. Its 400V rating and 25A current capability handle the high inrush currents and back-EMF of motors. The low VCE(sat) of 1.5V reduces conduction losses, improving efficiency. The fast switching speed (45ns fall time) enables high-frequency PWM control, reducing audible noise and improving dynamic response. The integrated freewheeling diode simplifies the circuit by eliminating external diodes. In a typical motor drive, the IGBT is used in a three-phase inverter bridge, switching at 10-20 kHz. Proper gate drive and snubber circuits are essential to manage voltage spikes. The D2PAK package allows efficient heat dissipation through the PCB copper pour, ensuring reliable operation at high currents.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS systems, the STGD25N40LZAG is used in the inverter stage to convert DC to AC. Its high current rating (25A) and voltage rating (400V) are suitable for 1-3 kVA UPS units. The low saturation voltage minimizes power loss, extending battery life. The fast switching speed allows for high-frequency operation, reducing the size of output filters. The integrated diode provides a path for reactive current, improving efficiency. In a typical UPS, the IGBTs are arranged in a full-bridge configuration, switching at 20 kHz. The device's thermal resistance of 1.5°C/W allows for compact heatsink design. The automotive-grade version (STGD25N40LZAG) is not required for UPS, but the standard version is cost-effective.
Recommended
Solar Inverters
The STGD25N40LZAG is well-suited for solar inverter applications, where high efficiency and reliability are critical. Its 400V rating matches the typical DC bus voltage of residential solar systems. The low VCE(sat) reduces conduction losses, improving overall system efficiency. The fast switching speed enables MPPT (Maximum Power Point Tracking) algorithms to operate at high frequencies, maximizing energy harvest. The integrated diode simplifies the circuit and reduces component count. In a typical solar inverter, the IGBTs are used in a boost converter and a full-bridge inverter. The device's thermal performance allows for operation in outdoor environments with proper heatsinking. The automotive-grade version is not necessary, but the standard version is widely used.
Recommended
Welding Equipment
In welding equipment, the STGD25N40LZAG is used in the inverter stage to generate high-frequency AC for the welding arc. Its high current rating (25A) and voltage rating (400V) handle the demanding conditions of welding. The low saturation voltage reduces power dissipation, allowing for compact designs. The fast switching speed enables high-frequency operation (up to 100 kHz), improving arc stability and control. The integrated diode provides a path for the inductive load current. In a typical welding inverter, the IGBTs are used in a full-bridge configuration. The device's thermal resistance allows for efficient cooling with forced air or liquid cooling. The automotive-grade version is not required, but the standard version is robust enough for industrial use.
Recommended
Power Factor Correction (PFC)
The STGD25N40LZAG can be used in PFC circuits to improve power factor in power supplies. Its 400V rating is suitable for boost PFC stages operating from 230V AC mains. The low VCE(sat) reduces conduction losses, improving efficiency. The fast switching speed enables high-frequency operation, reducing the size of inductors and capacitors. The integrated diode is used as the boost diode, simplifying the circuit. In a typical PFC circuit, the IGBT switches at 50-100 kHz, and the device's switching energy of 0.35mJ ensures low switching losses. The D2PAK package allows for efficient heat dissipation. The automotive-grade version is not required, but the standard version is cost-effective.
Recommended
Induction Heating
The STGD25N40LZAG is used in induction heating systems for cooking and industrial heating. Its high current rating (25A) and voltage rating (400V) are suitable for resonant converters. The low saturation voltage reduces power loss, improving efficiency. The fast switching speed enables high-frequency operation (20-100 kHz), which is essential for induction heating. The integrated diode provides a path for the resonant current. In a typical induction heater, the IGBTs are used in a half-bridge or full-bridge configuration. The device's thermal resistance allows for efficient cooling with a heatsink and fan. The automotive-grade version is not required, but the standard version is widely used.
Recommended
Recommended Products Summary
Engineering reference data for STGD25N40LZAG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STGD25N40LZ | IKW25N40T | FGA25N40L |
|---|---|---|---|---|
| Package | D2PAK (TO-263) | D2PAK (TO-263) | TO-263 (D2PAK) | TO-263 (D2PAK) |
| Brand | STMicroelectronics | STMicroelectronics | Infineon | onsemi |
| Collector-Emitter Voltage (VCE) | 400 V | 400 V | 400 V | 400 V |
| Continuous Collector Current (IC) at 25°C | 25 A | 25 A | 25 A | 25 A |
| Saturation Voltage (VCE(sat)) | 1.5 V | 1.5 V | 1.6 V | 1.7 V |
| Fall Time (tf) | 45 ns | 45 ns | 50 ns | 55 ns |
| Maximum Junction Temperature (Tj) | 150 °C | 150 °C | 150 °C | 150 °C |
| Automotive Grade | Yes (AEC-Q101) | No | No | No |
Key Differentiators
- Automotive-grade qualification (vs STGD25N40LZ)
- Lower saturation voltage (vs IKW25N40T)
- Faster switching speed (vs FGA25N40L)
Design Notes
The STGD25N40LZAG has a thermal resistance of 1.5°C/W (junction-to-case). At 25A and VCE(sat)=1.5V, power dissipation is 37.5W, causing a temperature rise of 56.25°C above case temperature. Ensure adequate heatsinking or PCB copper area to keep junction temperature below 150°C. For continuous operation at high current, use a heatsink with forced air cooling.
Place the gate driver as close to the gate pin as possible to minimize parasitic inductance. Use a gate resistor (typically 10-20 ohms) to control switching speed and reduce EMI. The D2PAK package's exposed tab is the collector; ensure proper isolation if using a shared heatsink. Use thermal vias under the tab to improve heat transfer to the PCB.
Do not exceed the gate-emitter voltage rating of ±20V. Use a gate clamp circuit (e.g., zener diode) to protect against overvoltage. Ensure the gate drive voltage is at least 15V to fully saturate the IGBT and minimize conduction losses. Avoid operating at high switching frequencies without proper snubber circuits to prevent voltage spikes.
Compliance Information
RoHS compliant and halogen-free per STMicroelectronics datasheet. AEC-Q101 qualified for automotive applications.
