I. Basic Information
Model：D1031SH45TS02
Brand：ABB
Product Positioning
The ABB D1031SH45TS02 is a high-power high-voltage flat-pack freewheeling diode module and a core power semiconductor device for industrial high-voltage power electronic systems. It is mainly used in high-voltage variable frequency systems, high-power rectifier and inverter devices, wind power converters, photovoltaic grid-connected inverters, industrial chopper circuits and large motor soft-start equipment. Its core functions include absorbing circuit reverse electromotive force, suppressing voltage spikes, freewheeling energy release, and protecting main power devices such as IGBTs and thyristors. It avoids device breakdown, arc impact and aging damage caused by switching transients, serving as the key core component for stable operation and safety protection of high-voltage power conversion systems.
Hardware Architecture
Adopting a classic hockey-puck flat press-pack sealed structure, the module integrates high-voltage and high-current soft-recovery diode chips, high-purity copper conductive substrates and ceramic insulation structures. The solder-free press-pack design eliminates solder joint fatigue, virtual welding and thermal resistance drift, delivering excellent voltage and current sharing performance and high thermal conductivity. The optimized soft-recovery chip suppresses reverse recovery voltage spikes and electromagnetic interference under high-frequency switching conditions, adapting to harsh high-voltage, high-current and high-frequency switching working conditions. The reinforced sealed structure is vibration-resistant, impact-resistant and high-temperature resistant, supporting long-term 7×24-hour heavy-load continuous operation with stable performance.
Mounting Specification
Standard industrial hockey-puck press-pack packaging, compatible with matched clamps, water-cooled and air-cooled heat sinks. Uniform mechanical pressure ensures reliable electrical contact and tight heat dissipation fitting. The solder-free mounting structure eliminates poor contact and overheating failure caused by long-term thermal expansion and contraction, adapting to compact integration of high-voltage converter cabinets and drive cabinets with high operational reliability.
Compatible Systems
Fully compatible with ABB full-series high-voltage frequency conversion, high-voltage drive and power quality control equipment, as well as various domestic high-voltage converters, wind and photovoltaic grid-connected power conversion devices and industrial high-power rectifier inverter systems. It supports matching with high-voltage IGBT and thyristor modules, adapting to various medium and high-voltage power electronic topologies to meet power conversion, energy consumption suppression and device protection requirements of high-power industrial systems.
Product Characteristics
It features 4500V ultra-high reverse withstand voltage and kiloampere-level high-current carrying capacity with strong overload resistance. The optimized soft-recovery design ensures low switching spikes and low electromagnetic interference, suitable for high-frequency switching scenarios. The solder-free press-pack all-metal sealed structure provides excellent heat dissipation, high thermal stability and no parameter drift during long-term operation. With high mechanical strength, vibration resistance and wide temperature adaptability, it supports series-parallel combination to expand voltage and power levels, meeting diverse high-power system application requirements.
II. Technical Specifications
1. Core Electrical Parameters
Rated repetitive peak reverse voltage (VRRM): 4500V, providing ultra-high withstand voltage to resist instantaneous overvoltage and surge impact in medium and high-voltage power conversion systems and prevent reverse breakdown. Peak surge forward current (IFSM): 23000A, with strong instantaneous large-current tolerance to adapt to short-term current impact and fault surge conditions of high-power loads. Forward voltage drop (VF): 4.2V@2.5kA (maximum junction temperature), featuring low conduction loss and low heat generation to reduce system power consumption and heat dissipation load. The optimized soft-recovery chip minimizes reverse recovery tail current and switching spikes, reducing electromagnetic interference and switching loss for improved system stability.
2. Structural & Physical Parameters
Package Type: Standard hockey-puck press-pack package. Overall contact diameter: 86mm, height: 26mm. Weight: 1.35kg. Shell Material: High-strength industrial alloy sealed shell with excellent insulation, corrosion resistance, oxidation resistance and high-voltage impact resistance, eliminating high-voltage creepage and leakage risks.
3. Thermal & Operating Parameters
Operating junction temperature (Tj): 0℃～+140℃, maintaining stable electrical performance without parameter attenuation under full temperature range and temperature fluctuation conditions. Storage temperature (Tstg): -40℃～+150℃, no chip aging, parameter drift or structural deformation during long-term storage. Heat Dissipation Adaptation: Compatible with air cooling and water cooling dual heat dissipation modes. The press-pack fitting structure features ultra-low thermal resistance and uniform heat conduction without local heat accumulation, meeting high-power continuous operation heat dissipation requirements.
4. Reliability & Protection Parameters
Condition Adaptability: Passed industrial EMC electromagnetic compatibility, vibration and impact resistance tests, resisting strong electromagnetic interference, high-frequency vibration, grid harmonic disturbance and instantaneous voltage surges in converter cabinets. Insulation Performance: High-level high-voltage insulation with stable dielectric properties, no insulation aging or breakdown leakage during long-term high-voltage operation. Mechanical Reliability: Solder-free press-pack structure avoids solder joint fatigue and falling off, with strong thermal cycle impact resistance for long-term frequent start-stop and heavy-load continuous operation.
III. Key Features
1. Ultra-High Withstand Voltage & High Current for High-Power Scenarios
Equipped with 4500V ultra-high reverse withstand voltage and 23kA instantaneous surge current resistance, the module supports kiloampere-level continuous operation, perfectly matching high-power energy conversion requirements of medium and high-voltage industrial power conversion systems. It effectively releases inductive residual energy, clamps circuit overvoltage and absorbs transient voltage spikes, providing comprehensive safety protection for core power semiconductor devices and avoiding breakdown and burnout failures.
2. Optimized Soft-Recovery Design for Low Interference & Low Loss
The built-in soft-recovery diode chip greatly reduces reverse recovery tail current and switching voltage spikes compared with ordinary fast-recovery diodes, suppressing high-frequency electromagnetic interference and switching loss. It improves power conversion efficiency, reduces equipment energy consumption and heat generation, stabilizes voltage waveforms of high-frequency switching systems, and adapts to high-precision and high-frequency industrial power conversion scenarios.
3. Sealed Press-Pack Structure with High Stability & Durability
The solder-free all-metal sealed press-pack structure eliminates inherent solder joint failure risks of traditional welded modules, featuring uniform stress and heat dissipation with stable thermal resistance. It maintains consistent electrical parameters without drift or poor contact under long-term alternating temperature and frequent start-stop conditions. The fully sealed design provides dust-proof, moisture-proof and anti-corrosion performance, adapting to harsh industrial cabinet environments and extending equipment service life.
4. Strong Scenario Adaptability & Expandable Series-Parallel Application
With high device consistency and low parameter dispersion, the module supports series and parallel combination to adapt to customized high-voltage and high-power power conversion systems. It is fully compatible with ABB high-voltage drive equipment and various domestic industrial power conversion devices, widely applicable to wind power, photovoltaic, metallurgy, power and chemical industries with strong universality and scalability.
5. Low Conduction Loss for Outstanding Energy Saving
The optimized chip conduction structure maintains ultra-low forward voltage drop under kiloampere-level high-current operation, significantly reducing device conduction loss and overall heat generation. It lowers the heat dissipation system load and long-term operating energy consumption, ensuring efficient and stable 7×24-hour uninterrupted heavy-load operation of industrial equipment.
IV. Working Principle
The ABB D1031SH45TS02 high-voltage freewheeling diode module operates based on the core principles of unidirectional conductive freewheeling + reverse overvoltage clamping + soft-recovery spike elimination, serving as the core energy buffer and safety protection device for high-voltage power electronic circuits.
During the operation of high-voltage power conversion, inverter and chopper circuits, inductive loads generate extremely high reverse induced electromotive force at the moment of switch device turn-off, forming instantaneous high-voltage spikes that easily break down core devices such as IGBTs and thyristors. Connected in parallel at both ends of the power loop, the module remains cut off under reverse voltage during normal forward conduction of the main circuit without affecting regular system operation. When the switch turns off and reverse electromotive force occurs, the diode conducts rapidly to provide a freewheeling release channel for inductive stored energy, consuming residual energy and smoothing circuit voltage fluctuation.
Meanwhile, the excellent soft-recovery characteristic eliminates severe current mutation during device turn-off, effectively suppressing reverse recovery voltage spikes and high-frequency electromagnetic interference, smoothing circuit voltage stress and reducing system switching loss. It realizes triple protection of voltage clamping, energy release and interference suppression for the power loop, ensuring stable switching action, consistent system voltage and safe operation of core devices for high-voltage power conversion systems.
