Infineon DDB6U145N16L IGBT Module: Comprehensive Technical Guide for Industrial Automation Applications

10 janvier 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What is the Infineon DDB6U145N16L?

Note on the listing title: the queue titles this article an "IGBT Module" — the part is a diode module. The DDB6U145N16L is Infineon's three-phase bridge rectifier in the ISOPACK 2332 package: six fast-recovery diodes wired as a full three-phase bridge on one isolated copper baseplate, six screw terminals (1-6) plus a chassis earth, rated at the 145 A / 1600 V class the model string encodes. It is the input stage of drives, UPS front ends, welders and electrolysis supplies — the block that turns three-phase mains into raw DC for the switching stage behind it. The label carries the bridge schematic printed right on the housing, the UL file mark, batch 9M0154P0. Two units, in refurbished condition that presents as new, 3-month warranty as recorded at intake. All 6 photos below show these exact modules.

2 min readContent reviewed 7 October 2026

Part details

DDB6U145N16L, as printed on the housing label
Field	Value
Model	Infineon DDB6U145N16L
Package	ISOPACK 2332
Type	Three-phase bridge rectifier — six diodes, bridge schematic printed on the label
Terminals	Six screw terminals (1-6, moulded marking) + chassis earth point
Label print	2328A, 18920 (UL file mark), batch 9M0154P0
Baseplate	Isolated copper baseplate, two mounting holes
Quantity	2 units, refurbished presenting as new; 3-month warranty as recorded at intake
Shipping weight	0.5 kg per unit as recorded

Scroll sideways to see the full table.

Values are read from the housing label and the photographed terminals; the current and voltage class follow the model designation (145 A class, 1600 V).

The input block every drive depends on

Before a variable-frequency drive can switch anything, something has to turn the three-phase mains into a DC bus, and in thousands of drives that something is a module exactly like this: a six-diode bridge, moulded into one isolated package, the die bonded to a copper baseplate that bolts straight onto the heatsink. The bridge schematic printed on the label is not decoration — it is the wiring diagram for the six screw terminals, AC in on three of them, DC out on two, and a technician wiring a replacement traces the print rather than a datasheet. The 1600 V class is what lets one part serve 400 V, 480 V and 690 V supplies with margin, and the 145 A class sets the drive frame it can feed. Replacement in the field is a pattern: photograph the terminal numbering, note the torque on the six screws and the two mounting holes, swap onto fresh thermal grease, and the drive's front end is new again. This record's two units are refurbished stock that presents as new, honestly noted at intake with a 3-month warranty — the sensible posture for power modules bought outside the franchise channel: inspect, test the six junctions, then run. KOEED quotes the DDB6U145N16L from stock; send the drive model it is going into and the quote will confirm the fit.