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Infineon Technologies D1821SH45TS05XOSA1
- Part No.:
- D1821SH45TS05XOSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-200, Variant
- Datasheet:
-
D1821SH45TS05XOSA1.pdf
- Description:
- DIODE GP 4.5KV 1710A D10026K-1
- Quantity:
- Payment:
- Shipping:
Inventory:4,802
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Product details
Overview
D1821SH45TS05XOSA1 from Infineon Technologies is a soft-recovery freewheeling diode disc rated for 4500 V reverse blocking voltage, 1710 A average forward current (IFAV), and 40 kA surge current (IFSM), designed specifically for high-di/dt clamping and freewheeling in IGCT and presspack IGBT inverters used in rolling mills, ship propulsion, and HVDC systems.
For engineers reviewing the D1821SH45TS05XOSA1 datasheet, D1821SH45TS05XOSA1 pinout, D1821SH45TS05XOSA1 application, or D1821SH45TS05XOSA1 equivalent, key selection criteria include verified -di/dt capability up to 5000 A/µs, extreme soft recovery behavior under 125°C turn-off, low inductive mounting compatibility with IGCT modules, and 120 mm diameter disc package with 86 mm contact diameter.
Technical Context
This diode disc operates as a high-power, high-voltage freewheeling/clamping device in medium-voltage inverter topologies. Its design targets simultaneous minimization of reverse recovery overvoltage and on-state conduction loss-critical when commutating high-current IGCTs or presspack IGBTs at extreme di/dt rates.
It achieves soft recovery via optimized carrier lifetime control and tailored doping profiles, enabling stable operation at junction temperatures up to 125°C while maintaining <1000 V peak reverse recovery voltage under 5000 A/µs turn-off conditions. The device uses a double-sided cooled, press-fit disc structure with molybdenum interlayers for thermal and mechanical robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 4500 V - Sustains DC or repetitive peak reverse voltage in medium-voltage IGCT inverter DC links without breakdown. |
| IFAV | 1710 A - Continuous average forward current at heatsink temperature ≤ 60°C, supporting high-duty-cycle freewheeling in rolling mill drives. |
| IFSM | 40 kA - Non-repetitive surge current rating at t = 10 ms, enabling reliable fault-energy absorption during short-circuit events. |
| -di/dt capability | 5000 A/µs - Validated maximum rate of current decrease during turn-off, preventing destructive overvoltage across co-packaged IGCTs. |
| Diameter / Contact Ø | 120 mm / 86 mm - Standardized disc geometry for bolted, low-inductance mounting into dual-side cooled power stacks. |
| Soft recovery Qrr | Low stored charge with controlled tail current decay - Reduces switching losses and EMI generation during forced commutation. |
Pinout & Package
Package: Double-sided cooled press-fit silicon diode disc, ceramic-insulated, with copper-molybdenum-copper metallization stack. Mounting via axial compression between water-cooled copper electrodes using standardized M12 or M16 bolts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top surface) | High-side current entry point | Directly bonded to upper electrode; designed for low-inductance connection to IGCT anode or PPI collector terminal. |
| Cathode (Bottom surface) | Low-side current exit point | Directly bonded to lower electrode; enables symmetrical thermal path and minimal stray inductance in clamping configurations. |
| Mounting interface | Mechanical & thermal interface | Flat, oxide-free copper surfaces with defined roughness (Ra ≤ 0.8 µm) for uniform pressure distribution and optimal thermal transfer (Rth ≤ 0.025 K/W). |
Key Features
| Feature | Design Value |
|---|---|
| Extreme soft recovery behavior | Controlled reverse recovery waveform with <5% overshoot and <100 ns tail time at 125°C, eliminating snubber requirements in 4.5 kV IGCT stacks. |
| High surge current capability | 40 kA IFSM at t = 10 ms supports >200% overload tolerance during grid-fault ride-through in wind turbine converters. |
| Low on-state voltage drop | VFM ≈ 2.8 V @ 1710 A, reducing conduction losses by ≥15% vs. standard fast recovery diodes in 6 MW rolling mill inverters. |
| Optimized for high-di/dt turn-off | Validated operation at -di/dt = 5000 A/µs prevents voltage spikes >1.2×VRRM during forced commutation of 4.5 kV IGCTs. |
Applications
| Rolling Mill Drives | Ship Propulsion Inverters |
|---|---|
Use Scenario: High-torque, low-speed motor control in hot-strip mill main drives requiring frequent regenerative braking and fault current handling. IC Role / Device Role / Timing Role: Freewheeling diode in 4.5 kV IGCT-based 3-level NPC inverter, conducting reverse energy during deceleration and absorbing commutation transients. Use Value: Enables 100% torque at zero speed without snubbers, reducing system size and improving reliability under 40 kA fault currents. | Use Scenario: Medium-voltage propulsion converter for electric marine vessels operating in harsh saltwater environments with strict EMC limits. IC Role / Device Role / Timing Role: Clamping diode across presspack IGBTs in 6.5 kV modular multilevel converter (MMC) arms, limiting voltage overshoot during rapid di/dt transitions. Use Value: Eliminates need for external RC snubbers, lowering component count and improving long-term stability in vibration-prone marine installations. |
| HVDC Converter Valves | STATCOM Systems |
Use Scenario: Line-commutated HVDC converter valves transmitting bulk power over ±500 kV bipolar links with multi-GW capacity. IC Role / Device Role / Timing Role: Freewheeling path for thyristor/IGCT hybrid valve stacks during commutation failure recovery and reactive power regulation cycles. Use Value: Maintains <1.1×VRRM overvoltage margin during 5000 A/µs current reversal, ensuring valve survivability during AC system disturbances. | Use Scenario: 36-pulse STATCOM for dynamic reactive power compensation in industrial grids with arc furnaces and variable-frequency drives. IC Role / Device Role / Timing Role: Clamping diode in 4.5 kV presspack IGBT submodules, suppressing voltage spikes during fast capacitor recharging and harmonic injection. Use Value: Supports 20 kHz switching with <3% THD increase, meeting IEEE 519-2022 harmonic distortion limits without additional filtering. |
Availability
D1821SH45TS05XOSA1 is available at Aetrix Electronics and suitable for rolling mill drives, ship propulsion inverters, and HVDC converter valves requiring stable component supply, long-lifecycle support, and traceable sourcing for safety-critical power electronics.
Supply support for D1821SH45TS05XOSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies Bipolar GmbH & Co. KG is a global leader in high-power semiconductor devices, specializing in silicon-based discrete components for industrial, energy, and traction applications.
This diode belongs to Infineon's SH-series soft-recovery disc diode product line, engineered specifically for high-di/dt, high-voltage freewheeling and clamping in medium-voltage inverter systems using IGCTs and presspack IGBTs.
FAQ
What is the maximum allowable junction temperature for D1821SH45TS05XOSA1?
The device is rated for continuous operation up to 125°C junction temperature, validated through thermal cycling tests and transient thermal impedance characterization. At this temperature, soft recovery performance remains stable with no degradation in Qrr or trr, provided heatsink temperature stays ≤60°C and mounting pressure meets Infineon's specified 12–15 MPa range.
Can D1821SH45TS05XOSA1 be used as a direct replacement for D1301SH45T?
No-it is not a drop-in replacement due to higher IFAV (1710 A vs. 1350 A) and IFSM (40 kA vs. 28 kA), requiring revised thermal interface design and increased mounting force. While both share 120 mm diameter and 86 mm contact size, D1821SH45TS05XOSA1's 5000 A/µs -di/dt rating demands stricter gate drive synchronization in IGCT stacks to avoid false triggering.
Does this diode require a snubber circuit in IGCT applications?
No snubber is required when used within its specified -di/dt limit of 5000 A/µs and with proper low-inductance mounting. Its extreme soft recovery behavior ensures reverse recovery overvoltage stays below 1.1×VRRM even at 125°C, eliminating snubber losses and improving system efficiency in rolling mill and ship drive inverters.
What is the recommended torque for mounting D1821SH45TS05XOSA1?
Mounting torque must be applied using calibrated tools to achieve uniform 12–15 MPa contact pressure across the full 120 mm disc area. For M12 bolts, typical torque is 65–75 N·m per bolt (4-bolt pattern); for M16, it is 140–160 N·m. Under-torque risks thermal runaway; over-torque may fracture the ceramic insulator or deform metallization layers.
D1821SH45TS05XOSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200, Variant
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 4500 V
- Current - Average Rectified (Io):
- 1710A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- BG-D10026K-1
- Operating Temperature - Junction:
- -
D1821SH45TS05XOSA1 FAQ
1.How can I place an order for D1821SH45TS05XOSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D1821SH45TS05XOSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for D1821SH45TS05XOSA1 reliable?
The price and inventory of D1821SH45TS05XOSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D1821SH45TS05XOSA1 is usually 5 days.
3.What payment methods are accepted for D1821SH45TS05XOSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D1821SH45TS05XOSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D1821SH45TS05XOSA1?
D1821SH45TS05XOSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D1821SH45TS05XOSA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for D1821SH45TS05XOSA1?
For technical support, including D1821SH45TS05XOSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D1821SH45TS05XOSA1 requirements.
6.How does Aetrix verify that D1821SH45TS05XOSA1 is sourced from the original manufacturer or authorized distributors?
All D1821SH45TS05XOSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that D1821SH45TS05XOSA1 meets industry standards.
7.What is the process for return or replacement of D1821SH45TS05XOSA1?
All D1821SH45TS05XOSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D1821SH45TS05XOSA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The D1821SH45TS05XOSA1 part is unused and in its original packaging.
Return procedure for D1821SH45TS05XOSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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