Infineon FS150R12KT4-B11 IGBT Power Module: Complete Guide for Industrial Automation
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What is the Infineon FS150R12KT4-B11?
The FS150R12KT4-B11 is Infineon's half-bridge IGBT module in the EconoPACK 4 package — a 1200 V / 150 A-class switch pair built on the IGBT4 die generation, the standard power stage for industrial drives in the tens of kilowatts. The module labels read Infineon EconoPACK™, FS150R12KT4-B11, date group G2318, unit numbers 00100 and 00101, with the RU mark and the earth symbol. This record is a pair of reconditioned modules in their original packaging, 3-month warranty as recorded at intake on 8 January 2026 — stated exactly as booked, so the grade is clear before purchase. All seven photos and the inspection video show these exact modules.
Part details
| Field | Value |
|---|---|
| Brand | Infineon — EconoPACK™ 4 package |
| Model | FS150R12KT4-B11 half-bridge IGBT module — 1200 V / 150 A class (IGBT4 die, B11 revision) |
| Marking | Infineon EconoPACK™, FS150R12KT4-B11, G2318, units 00100 and 00101, barcodes, RU mark + earth symbol |
| Construction | White epoxy housing over the copper baseplate, control pin header along the top, four corner mounts with brass inserts, brushed metal baseplate face |
| Quantity | 2 modules, reconditioned with original packaging, 3-month warranty, intake 8 January 2026 |
Values are read from the module labels and the photographed construction in the photo set.
The half bridge at 150 amps
The half bridge is the cell a drive builds with: upper switch, lower switch, and the anti-parallel diodes between them — one module per motor phase. At the 1200 V / 150 A point, the FS150R12KT4-B11 serves drive frames from roughly 30 to 75 kW, where the IGBT4 die generation's lower switching losses translate directly into cooler heatsinks and smaller cabinets. The EconoPACK 4 housing is the industry-standard footprint for this class: the control pins line up along the top edge for the gate-driver board, the power terminals land where the busbar expects them, and the four brass-inserted corners clamp the copper baseplate flat against the heatsink. The B11 suffix is Infineon's package-revision code — same die, refined internal layout — which is why replacements should match it letter for letter.
The two modules in this lot are same-date-group stock (G2318, consecutive unit numbers), reconditioned and photographed from every face: labels legible, control pins straight, baseplates flat and bright. For a drive whose bridge has failed, a matched pair at a fraction of new-unit cost is the practical repair — verify the B11 revision against the dead module, and the swap is a torque-wrench job.
Photos
All images below are original KOEED warehouse photos. Click any photo to view it full size.
For the larger EconoDUAL sibling, see the Infineon FF300R12KE3 — the 1200 V / 300 A half bridge documented from the same warehouse.
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