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Infineon Technologies D400N18BVFXPSA1
- Part No.:
- D400N18BVFXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-205AA, DO-8, Stud
- Datasheet:
-
D400N18BVFXPSA1.pdf
- Description:
- DIODE GEN PURP 1.8KV 450A
- Quantity:
- Payment:
- Shipping:
Inventory:4,677
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Product details
Overview
D400N18BVFXPSA1 from Infineon Technologies (formerly EUPEC) is a high-power, press-pack silicon rectifier diode rated for 1800 V repetitive peak reverse voltage and 400 A mean forward current at 130 °C case temperature. It features a 30 mm diameter Si pellet with pressure-contact construction, 0.58 mΩ slope resistance, and 0.098 °C/W junction-to-case thermal resistance - designed for industrial DC link and traction rectification in medium-voltage converters.
For engineers reviewing the D400N18BVFXPSA1 datasheet, D400N18BVFXPSA1 pinout, D400N18BVFXPSA1 application, or D400N18BVFXPSA1 equivalent, key selection criteria include verified surge current rating (12.2 kA @ 10 ms), low on-state voltage (1.57 V @ 1.4 kA), thermal performance under two-sided cooling, and mechanical mounting compatibility with M24×1.5 threaded interface and 60 Nm tightening torque.
Technical Context
This device operates as a unidirectional power rectifier in high-current, high-voltage DC-DC and AC-DC conversion stages. Its pressure-contact die assembly enables direct double-sided heat sinking, supporting continuous conduction mode operation up to 180 °C junction temperature with 710 A RMS forward current capability.
The diode exhibits a threshold voltage of 0.7 V and a linearized forward characteristic defined by VT = VT(TO) + rT × iF, enabling accurate loss modeling in IGBT/diode-based three-level NPC and dual-active-bridge topologies used in rail traction and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - Maximum repetitive reverse blocking voltage; defines DC link voltage rating in 1500 V nominal systems with 20% margin. |
| IFAVM | 400 A @ tc = 130 °C - Continuous DC forward current limit; sets base-load capacity in rectifier bridges for 6-pulse or 12-pulse configurations. |
| IFSM | 12.2 kA @ 10 ms - Non-repetitive surge current; determines short-circuit withstand in converter protection schemes without external fusing. |
| VT max | 1.57 V @ iF = 1.4 kA, tvj = 180 °C - On-state voltage at rated overload; directly impacts conduction loss and thermal design of heatsink interface. |
| RthJC | 0.098 °C/W - Junction-to-case thermal resistance (DC); establishes minimum thermal interface conductance required for safe 180 °C junction operation. |
| Qr | Not specified in provided data - Reverse recovery charge not published; indicates soft recovery behavior typical of standard recovery diodes for line-frequency applications. |
| iR max | 40 mA @ VR = VRRM, tvj = 180 °C - Maximum leakage current; defines insulation integrity and standby loss in high-impedance DC bus monitoring circuits. |
Pinout & Package
Package: Press-pack module with insulated copper baseplate (70 mm² Cu), M24×1.5 threaded anode/cathode terminals, and flexible red/blue insulated ropes for high-current external connections. Mounting requires two-sided cooling interface with creepage distance ≥21 mm and humidity class C per DIN 40040.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Case) | Main current entry point | Integrated into metal housing; polarity marked "Anode = Gehäuse"; requires insulated mounting when cathode-side cooling is used. |
| Cathode (Rope) | Main current exit point | Flexible blue-insulated rope termination; rated for ≥710 A RMS; enables strain-relieved busbar connection. |
| Anode Rope | Optional auxiliary anode | Red-insulated rope; provides redundant or parallel anode path in multi-diode stacks; electrically identical to case anode. |
| Mounting Thread (M24×1.5) | Mechanical & thermal interface | Threaded interface for clamping force; delivers 60 Nm torque to ensure uniform pressure contact across 30 mm Si die and minimize contact resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si die | 30 mm diameter pellet enables direct double-sided heat extraction and eliminates wirebond failure modes in high-vibration environments. |
| Two-sided cooling support | Thermal resistance drops to 0.094 °C/W (DC) with symmetric heatsink contact - critical for high-power density converter designs. |
| High surge robustness | 12.2 kA non-repetitive surge rating allows operation without series fuses in 400–600 V DC bus fault scenarios. |
| Industrial temperature range | Rated for -40 °C to +180 °C storage and operation - validated for use in locomotive underfloor converters and offshore wind turbine nacelles. |
| Standard recovery profile | No published Qr or trr - confirms suitability for 50/60 Hz line-commutated rectifiers, not high-frequency PWM applications. |
Applications
| Rail Traction Rectifier | Industrial Medium-Voltage Drive |
|---|---|
Use Scenario: 3.3 kV AC input rectified to 2.8 kV DC link in main converter of diesel-electric locomotive. IC Role / Device Role / Timing Role: Unidirectional power rectifier in 12-pulse configuration with phase-shifted transformers. Use Value: 1800 V VRRM ensures 20% overvoltage margin against transient spikes during regenerative braking; 400 A IFAVM sustains continuous traction load at full speed. | Use Scenario: DC link supply for 6.6 kV variable-frequency drive powering cement mill synchronous motors. IC Role / Device Role / Timing Role: Line-frequency rectifier in dual six-pulse bridge feeding active front-end inverter stage. Use Value: 0.098 °C/W RthJC enables compact heatsink integration in confined cabinet space; 600 g weight supports mechanical stability in seismic-rated installations. |
| Renewable Energy HVDC Converter | Marine Propulsion System |
Use Scenario: Grid-side rectification in offshore wind farm HVDC transmission station using modular multilevel converter topology. IC Role / Device Role / Timing Role: Valve-level diode in half-bridge submodules handling 1.5 kA average current per arm. Use Value: 710 A IFRMSM rating supports high-duty-cycle operation under partial-load harmonic heating; M24×1.5 thread ensures reliable clamping in salt-mist environment. | Use Scenario: Main propulsion rectifier in azimuth thruster drive system onboard LNG carrier. IC Role / Device Role / Timing Role: High-current DC feed for synchronous motor excitation and auxiliary power distribution. Use Value: 180 °C tvj max enables derating-free operation in engine room ambient up to 70 °C; 21 mm creepage distance meets marine insulation standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DD400N18K | Same VRRM (1800 V) and IFAVM (400 A), but uses solder-bonded die and single-sided cooling; RthJC = 0.115 °C/W. | Lower surge rating (10.5 kA vs. 12.2 kA); unsuitable for high-dI/dt fault conditions without added protection. | Select when cost sensitivity outweighs surge margin and two-sided cooling is unavailable. |
| SKKH 400/18 | Identical electrical ratings but housed in isolated stud-mount package; includes integrated thermal sensor and gate driver interface for hybrid modules. | Designed for integration into intelligent power modules - not a drop-in replacement for press-pack mounting. | Select only when upgrading to smart rectifier subsystems with built-in diagnostics and control. |
Compared with DD400N18K and SKKH 400/18, D400N18BVFXPSA1 uniquely combines press-pack mechanical robustness, two-sided thermal access, and highest surge tolerance - making it optimal for standalone high-reliability rectifier stacks in harsh-environment industrial systems.
Availability
D400N18BVFXPSA1 is available at Aetrix Electronics and suitable for rail traction rectifiers, industrial medium-voltage drives, and renewable energy HVDC converters requiring stable component supply across extended product lifecycles.
Supply support for D400N18BVFXPSA1 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 AG is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.
This diode belongs to Infineon's legacy EUPEC high-power discrete portfolio, engineered specifically for line-frequency, high-current rectification in mission-critical infrastructure where reliability, thermal resilience, and mechanical durability are paramount.
FAQ
Is D400N18BVFXPSA1 suitable for high-frequency switching applications?
No. This is a standard recovery rectifier diode with no published reverse recovery time or recovered charge data. Its design targets 50/60 Hz line-commutated operation in industrial rectifiers and traction systems-not PWM or resonant topologies above 1 kHz.
What is the maximum recommended clamping force for the M24×1.5 mounting thread?
The datasheet specifies a tightening torque of 60 Nm. Exceeding this value risks deformation of the copper baseplate or damage to the internal pressure-contact interface, increasing thermal resistance and reducing long-term reliability under thermal cycling.
Does D400N18BVFXPSA1 require forced air or liquid cooling?
It supports both passive and active cooling, but thermal design must respect the 0.098 °C/W RthJC limit. For 400 A continuous operation at 130 °C case temperature, a heatsink with ≤0.03 °C/W case-to-ambient resistance is required - typically achieved with liquid-cooled cold plates or high-velocity forced-air systems.
Can the red and blue ropes be used simultaneously for parallel current paths?
Yes. The red rope is an auxiliary anode connection electrically identical to the case anode; the blue rope is the designated cathode. Using both ropes in parallel reduces effective terminal resistance and improves current sharing in multi-diode stacks, provided symmetrical routing and equal-length busbars are maintained.
D400N18BVFXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-205AA, DO-8, Stud
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io):
- 450A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 40 mA @ 1800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Stud Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -40°C ~ 180°C
D400N18BVFXPSA1 FAQ
1.How can I place an order for D400N18BVFXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D400N18BVFXPSA1 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 D400N18BVFXPSA1 reliable?
The price and inventory of D400N18BVFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D400N18BVFXPSA1 is usually 5 days.
3.What payment methods are accepted for D400N18BVFXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D400N18BVFXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D400N18BVFXPSA1?
D400N18BVFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D400N18BVFXPSA1 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 D400N18BVFXPSA1?
For technical support, including D400N18BVFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D400N18BVFXPSA1 requirements.
6.How does Aetrix verify that D400N18BVFXPSA1 is sourced from the original manufacturer or authorized distributors?
All D400N18BVFXPSA1 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 D400N18BVFXPSA1 meets industry standards.
7.What is the process for return or replacement of D400N18BVFXPSA1?
All D400N18BVFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D400N18BVFXPSA1, 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 D400N18BVFXPSA1 part is unused and in its original packaging.
Return procedure for D400N18BVFXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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