Infineon DD-Series Diode Modules: DD180N16S

Technical Dossier

Product Details And Specifications

Infineon DD-Series Diode Modules: Comprehensive Module Range and Technical Overview

The Infineon DD-Series (also referenced under the IXYS/Eupec legacy catalog) represents one of the most widely deployed families of press-pack and module-format power diode assemblies in global heavy industry. Installations span petrochemical refineries, nuclear auxiliary power systems, offshore platform rectifier banks, steel mill DC drives, and large-scale UPS infrastructure. The DD180N16S specifically is a dual diode module rated at 180 A average forward current and 1600 V repetitive peak reverse voltage (VRRM), housed in a standard 34 mm pitch power module package compatible with industry-standard heatsink interfaces.

The DD-Series occupies the mid-to-high current tier of Infineon's discrete rectifier portfolio, bridging the gap between low-current SMD rectifiers and high-power press-pack stacks. Its standardized footprint has made it a default replacement reference in legacy drive systems originally designed around Eupec and early Siemens semiconductor catalogs.

The Evolution of DD-Series Architecture

The DD-Series traces its lineage to the Eupec GmbH modular diode platform of the late 1980s, which Infineon Technologies absorbed following the Siemens Semiconductor spin-off in 1999. Early variants such as the DD60N and DD100N used aluminum wire bonding on silicon chips mounted to direct copper bonded (DCB) substrates, with silicone gel encapsulation. These early modules were rated to junction temperatures of 125°C and were designed for 50/60 Hz rectifier bridge applications in industrial drives.

Through the 1990s and 2000s, the series expanded current ratings incrementally — DD130N, DD160N, DD180N, DD200N — while maintaining backward-compatible package footprints. The voltage suffix convention (e.g., 14K = 1400 V, 16S = 1600 V, 18 = 1800 V) was standardized across the range, enabling engineers to substitute higher-voltage variants into existing PCB and busbar layouts without mechanical redesign.

By the 2010s, the DD-Series entered a mature/stable lifecycle phase. Infineon's active development focus shifted to the EconoDUAL and PrimePACK platforms for new designs, but the DD-Series remained in production to support the installed base. As of 2026, several lower-current variants are confirmed end-of-life (EOL), making aftermarket sourcing and lifecycle extension support critical for operators of legacy equipment.

DD-Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked members of the Infineon DD-Series diode module family, organized by current rating tier:

DD60N14K: Dual diode module, 60 A / 1400 V, standard flat-base package, rectifier bridge use.
DD60N16K: Dual diode module, 60 A / 1600 V, increased VRRM for higher-line voltage systems.
DD100N14K: Dual diode module, 100 A / 1400 V, mid-current rectifier for industrial drives.
DD100N16K: Dual diode module, 100 A / 1600 V, common in 690 V AC input rectifier stages.
DD130N14K: Dual diode module, 130 A / 1400 V, used in medium-power DC bus rectifiers.
DD130N16K: Dual diode module, 130 A / 1600 V, drop-in upgrade path from DD100N16K.
DD160N14K: Dual diode module, 160 A / 1400 V, high-current rectifier for crane and hoist drives.
DD160N16K: Dual diode module, 160 A / 1600 V, standard in offshore and marine drive systems.
DD180N14K: Dual diode module, 180 A / 1400 V, heavy industrial rectifier, steel mill applications.
DD180N16S: Dual diode module, 180 A / 1600 V, screw-terminal variant, primary SKU for this listing — widely used in Siemens SIMOREG and ABB DCS800 rectifier assemblies.
DD200N14K: Dual diode module, 200 A / 1400 V, upper-range current for large UPS rectifier banks.
DD200N16K: Dual diode module, 200 A / 1600 V, high-current / high-voltage, nuclear auxiliary power use.
DD250N14K: Dual diode module, 250 A / 1400 V, press-fit compatible, large rectifier stack assemblies.
DD250N16K: Dual diode module, 250 A / 1600 V, maximum current standard module, refinery DC systems.
DD300N14K: Dual diode module, 300 A / 1400 V, high-power variant, typically used in parallel rectifier configurations.
DD300N16K: Dual diode module, 300 A / 1600 V, top-tier current rating in the standard DD package format.

Sourcing Hard-to-Find & Obsolete DD-Series Parts

DriveKNMS maintains a dedicated inventory program for DD-Series modules, with particular focus on variants confirmed as EOL or allocation-restricted by Infineon's authorized distribution network. For operators of legacy Siemens SIMOREG DC Master, ABB DCS800, and Eurotherm 590 series drives — all of which commonly use DD-Series rectifier modules — unplanned downtime caused by module failure is a critical operational risk.

DriveKNMS sources DD-Series modules through a combination of factory-sealed new-old-stock (NOS), tested pulls from decommissioned equipment, and verified aftermarket channels. All units are cross-referenced against Infineon's original part numbering to confirm authenticity before dispatch. Long-lead and allocation-restricted SKUs such as the DD250N16K and DD300N16K are held in bonded stock specifically to support emergency breakdown orders with same-day or next-day dispatch capability.

For customers requiring ongoing lifecycle support contracts — covering scheduled preventive replacement of rectifier modules across a fleet of drives — DriveKNMS offers annual supply agreements with price-lock provisions.

Quality Control for the DD-Series Range

Each DD-Series module processed by DriveKNMS undergoes a structured inspection and electrical test protocol before shipment. Visual inspection covers package integrity, terminal condition, and date code verification. Electrical testing includes forward voltage drop (VF) measurement at rated current, reverse leakage current (IR) measurement at VRRM, and thermal resistance verification where test equipment permits.

For modules sourced as tested pulls, additional steps include ultrasonic scanning of the DCB substrate bond layer to detect delamination — a common failure mode in modules that have experienced thermal cycling beyond design limits. Modules that fail any test parameter are quarantined and not offered for resale. Test records are retained and available to customers on request for critical applications.

All DD-Series modules are dispatched in anti-static packaging with desiccant, and thermal interface material (TIM) recommendations are included with each shipment to ensure correct installation torque and contact resistance on the heatsink interface.