Description
The ABB 5SDF0860H0003 is a high-power Diode Module engineered for ABB’s ACS880 industrial drives, delivering robust rectification in demanding power conversion applications. This press-pack diode assembly converts AC to DC with exceptional efficiency and thermal stability, serving as a critical component in medium-voltage drive systems and active front-end (AFE) units. The 5SDF0860H0003 utilizes silicon diode technology with direct copper pressure contact technology, enabling ultra-low forward voltage drop (1.25V typ.) and surge current handling up to 32kA. Hermetically sealed with ceramic insulators and integrated temperature sensors, it operates reliably in harsh industrial environments while maintaining isolation integrity at 6.5kV. For steel mills, mining conveyors, and marine propulsion systems requiring megawatt-level power control, this module delivers unmatched reliability with 300,000+ hour service life under cyclic loading conditions.

ABB 5SDF0860H0003
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 5SDF0860H0003 |
| Manufacturer | ABB |
| Product Type | Press-Pack Diode Module |
| Max Repetitive Reverse Voltage | 5200V |
| Average Forward Current | 860A @ 85°C |
| Surge Current (10ms) | 32kA |
| Forward Voltage Drop | 1.25V typ. @ 860A |
| Thermal Resistance | 0.015 K/W (junction-to-case) |
| Isolation Voltage | 6.5kV AC (1 min) |
| Operating Temperature | -40°C to +125°C (junction) |
| Cooling Method | Liquid or forced air (2.5m/s min) |
| Mounting Force | 45-55 kN |
| Weight | 1.8 kg |
| Dimensions | 140 x 140 x 30 mm (LxWxH) |
| Compliance | UL 508, IEC 60747 |
Main Features and Advantages
Ultra-Low Loss Design: Optimized silicon wafer geometry reduces conduction losses by 15% compared to previous generations, saving >5MWh annually in 2MW drive applications.
Robust Mechanical Construction: Direct copper-silicon interface eliminates bond wires and solder fatigue, enabling 100,000 thermal cycles (ΔTj=80°C) – critical for rolling mill reversals.
Integrated Monitoring: Embedded NTC temperature sensors provide real-time junction temperature feedback to drive control systems, enabling predictive maintenance.
Fault-Tolerant Architecture: Asymmetric pressure contact design ensures controlled failure mode during overloads, preventing catastrophic short circuits.
Seamless Integration: Precisely matched clamping force compatibility with ABB’s 5SNG** series thyristor modules simplifies stack assembly in multi-level converters.
Application Field
The ABB 5SDF0860H0003 powers heavy industrial systems:
Metal Processing: Rectification in 6-pulse/12-pulse configurations for rolling mill DC drives (1-10MW range)
Mining Hoists: Active front-end units for regenerative braking energy recovery
Marine Propulsion: Medium-voltage VSD input rectifiers in azimuth thrusters
Cement Plants: Kiln drive power conversion systems with high dust tolerance
Pump Storage: Frequency converters for hydro turbine synchronization
The module withstands 100g mechanical shock (IEC 60068-2-27) making it suitable for locomotive traction converters.

ABB 5SDF0860H0003
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