K40H1203 IGBT Transistor 1200V 80A TO-247
The K40H1203 is the marking for the IKW40N120H3, a third-generation high-speed IGBT from Infineon using TRENCHSTOP technology and fieldstop construction. It combines low collector-emitter saturation voltage with high-speed switching and includes an anti-parallel diode with soft, fast recovery characteristics. The datasheet specifies a maximum junction temperature of 175°C and a PG-TO247-3 package.
This IGBT is designed for demanding power-electronics applications including uninterruptible power supplies, welding converters, and converters operating at high switching frequencies. The device supports high collector current capability and provides an integrated anti-parallel diode, making it suitable for power conversion stages where controlled switching and reverse-current handling are required.
Features:
- High-speed IGBT technology.
- TRENCHSTOP technology.
- Fieldstop construction.
- Soft and fast recovery anti-parallel diode.
- Low conduction losses.
- Low EMI characteristics.
- Suitable for high-frequency switching.
- Integrated anti-parallel diode.
- Through-hole power package.
- RoHS-compliant lead plating.
Specifications:
| Parameter | Value |
|---|---|
| Part Number | IKW40N120H3 |
| Marking | K40H1203 |
| Device Type | IGBT |
| Collector-Emitter Voltage (VCE) | 1200 V |
| DC Collector Current (TC = 25°C) | 80 A |
| DC Collector Current (TC = 100°C) | 40 A |
| Pulsed Collector Current | 160 A |
| Collector-Emitter Saturation Voltage | 2.05 V typ. at 25°C |
| Maximum Junction Temperature | 175°C |
| Gate-Emitter Voltage | ±20 V |
| Gate Threshold Voltage | 5.0–6.5 V |
| Gate Charge | 185 nC typ. |
| IGBT Thermal Resistance, Junction-to-Case | 0.31 K/W |
| Operating Junction Temperature | -40 to +175°C |
| Storage Temperature | -55 to +150°C |
| Package | PG-TO247-3 |
| Package Style | TO-247 |


Pinout:

| Pin | Terminal |
|---|---|
| 1 | Gate (G) |
| 2 | Collector (C) |
| 3 | Emitter (E) |
Applications:
- Uninterruptible power supplies (UPS).
- Welding converters.
- High-frequency power converters.
- Inverters.
- Industrial power conversion.
- Switching power supplies.
- Motor drive power stages.
- DC-AC conversion.
Packages Included:
- 1 × K40H1203 IGBT Transistor 1200V 80A TO-247.

