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Infineon Technologies D770N18TXPSA1
- Part No.:
- D770N18TXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-200AA, A-PUK
- Datasheet:
-
D770N18TXPSA1.pdf
- Description:
- DIODE GEN PURP 1.8KV 770A
- Quantity:
- Payment:
- Shipping:
Inventory:8,483
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Product details
Overview
D770N18TXPSA1 from Infineon Technologies is a high-power, press-pack silicon rectifier diode designed for industrial AC/DC conversion in medium-voltage drives and traction systems. It delivers 770 A average on-state current at TC = 100 °C, 1800 V repetitive peak reverse voltage (VRRM), and 7700 A surge current (IFSM) at tP = 10 ms - enabling robust operation in 3-phase bridge rectifiers for rail propulsion inverters.
For engineers reviewing the D770N18TXPSA1 datasheet, D770N18TXPSA1 pinout, D770N18TXPSA1 application, or D770N18TXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.057 °C/W two-sided), on-state voltage (1.76 V at 1.6 kA), and transient thermal impedance behavior under sinusoidal conduction angles - critical for thermal design of forced-air or liquid-cooled power stacks.
Technical Context
This device is a single-element, two-terminal, unidirectional power rectifier with pressure-contact Si pellet construction and no integrated gate or control logic. Its electrical behavior follows a defined on-state characteristic vF = A + B·iF + C·ln(iF) + D·iF², with coefficients validated at Tvj = 180 °C.
Thermal performance is highly dependent on mounting configuration: two-sided cooling yields RthJC = 0.057 °C/W, while anode- or cathode-only cooling degrades it to 0.094–0.134 °C/W. Transient thermal impedance ZthJC is analytically modeled using seven RC network elements, supporting accurate loss and temperature simulation under pulsed load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - maximum repetitive reverse voltage before avalanche breakdown; sets system-level DC bus insulation and snubber sizing |
| IFAVM @ TC=100°C | 770 A - continuous DC forward current capability with two-sided heatsink cooling at 100 °C case temperature |
| IFSM @ tP=10 ms | 7700 A - short-circuit withstand current for protection coordination with fast-acting fuses or IGBT desaturation circuits |
| vF @ iF=1.6 kA | 1.76 V - forward voltage drop defining conduction loss at rated overload; used to calculate PFAV = vF × IFAV |
| RthJC (two-sided) | 0.057 °C/W - thermal resistance from junction to case under optimal dual-surface clamping; determines minimum heatsink size |
| I²t @ tP=10 ms | 296.45 × 10³ A²s - energy withstand capability during fault clearing; used for fuse I²t matching |
| Tvj max | 180 °C - absolute maximum junction temperature; defines safe operating area limits for pulse-width and duty-cycle derating |
Pinout & Package
Package: Press-pack, double-side cooled, stud-mount diode with isolated anode and cathode terminals. Requires mechanical clamping force of 3.2–7.6 kN and provides 10 mm creepage distance. Weight: 75 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (stud) | Forward current entry point | High-current input terminal; must be torqued to specified clamping force for low RthCH and reliable thermal transfer |
| Cathode (stud) | Forward current exit point | High-current output terminal; electrically isolated from anode; forms complete current path through external busbar |
Key Features
| Feature | Design Value |
|---|---|
| Two-sided thermal interface | Enables 0.057 °C/W RthJC - reduces required heatsink volume by ~40% vs. single-sided mounting |
| High IFSM rating | 7700 A surge current supports coordination with Class T fuses in 690 V AC systems without upstream breaker tripping |
| Low slope resistance rT | 0.54 mΩ - minimizes forward voltage rise under overload, improving efficiency in high-current DC links |
| Validated on-state model | Four-coefficient vF = A + B·iF + C·ln(iF) + D·iF² enables precise SPICE-level loss simulation across 100–2000 A range |
| 180 °C junction rating | Extends usable temperature margin in sealed enclosures or high-ambient environments common in rail and marine applications |
Applications
| Rail Traction Rectifier | Industrial Medium-Voltage Drive |
|---|---|
Use Scenario: Converting 1500 V DC or 25 kV AC (via transformer) to regulated DC link for asynchronous motor inverters in mainline locomotives. IC Role / Device Role / Timing Role: Uncontrolled rectifier element in 12-pulse Graetz bridge; handles 770 A continuous and 7700 A fault currents. Use Value: 1800 V VRRM ensures >2× safety margin against line surges; 0.057 °C/W RthJC enables compact, air-cooled stack design meeting EN 50155 thermal cycling requirements. | Use Scenario: Front-end rectification in 690 V AC variable-frequency drives for mining conveyors and steel mill rolling stands. IC Role / Device Role / Timing Role: Main power diode in parallel-connected modules delivering >2 MW total DC power. Use Value: 296.45 × 10³ A²s I²t rating matches 1000 A Class T fuse let-through energy, ensuring selective coordination during short-circuit events. |
| Renewable Energy HVDC Converter | Marine Propulsion System |
Use Scenario: Grid-side rectification stage in offshore wind farm HVDC transmission converters interfacing with 33 kV collection grids. IC Role / Device Role / Timing Role: High-reliability, long-life diode in modular multilevel converter (MMC) submodules operating at 2.5 kV per arm. Use Value: 180 °C Tvj max allows derated operation at 150 °C junction under 25-year lifetime projections, reducing thermal aging of silicone encapsulants. | Use Scenario: DC bus supply for azimuth thruster inverters on dynamically positioned offshore support vessels. IC Role / Device Role / Timing Role: Primary rectifier in dual-redundant 6-pulse bridges feeding 900 V DC propulsion buses. Use Value: 10 mm creepage distance meets IEC 60092-350 marine insulation requirements for salt-laden, high-humidity engine room environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DD700N18K | Same VRRM (1800 V), lower IFAVM (700 A @ TC=100°C), higher RthJC (0.065 °C/W) | Suitable for lower-current, space-constrained stacks where 70 A derating is acceptable | Select when thermal margin exists and module footprint must be minimized |
| D780N18TXPSA1 | Higher IFAVM (780 A), identical package and thermal specs, same VRRM | Direct upgrade path for designs needing +10 A margin without layout change | Choose for new designs targeting extended lifetime under 100 °C case temperature |
Compared with DD700N18K, D770N18TXPSA1 delivers 10% higher continuous current and 12% lower thermal resistance; versus D780N18TXPSA1, it trades 10 A of current headroom for proven field reliability and broader fuse coordination margin.
Availability
D770N18TXPSA1 is available at Aetrix Electronics and suitable for rail traction rectifiers, industrial medium-voltage drives, renewable energy HVDC converters, and marine propulsion systems requiring stable component supply across multi-year production cycles.
Supply support for D770N18TXPSA1 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 is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy infrastructure markets.
D770N18TXPSA1 belongs to Infineon's IFBIP high-power rectifier diode product line, engineered for reliability in mission-critical AC/DC conversion where thermal stability, surge robustness, and long-term parameter consistency are mandatory.
FAQ
What is the recommended clamping force for D770N18TXPSA1 installation?
The datasheet specifies a mechanical clamping force of 3.2–7.6 kN across both anode and cathode studs. Applying force below 3.2 kN increases RthCH and risks hot-spot formation; exceeding 7.6 kN may deform internal pressure contacts or damage ceramic insulators. Torque values depend on stud thread size and lubrication - refer to Infineon Application Note AN2017-05 for calibrated torque-to-force conversion tables.
Can D770N18TXPSA1 be used in single-sided cooling configurations?
Yes, but with significant thermal penalty: RthJC rises to 0.094 °C/W (anode-side only) or 0.134 °C/W (cathode-side only). This requires either 65% larger heatsink surface area or 30 °C lower ambient temperature to maintain Tvj ≤ 150 °C at 770 A. Dual-sided cooling is strongly recommended for rated performance.
Does D770N18TXPSA1 have a specified reverse recovery time (trr)?
No - as a standard (non-fast) rectifier diode, trr is not characterized or guaranteed. Instead, recovered charge Qr is specified: 100–10000 µAs depending on -di/dt and iFM. For snubberless operation in line-commutated converters, Qr data supports calculation of commutation overshoot and turn-off losses in thyristor-based systems.
Is D770N18TXPSA1 qualified to AEC-Q101 or similar automotive standards?
No - this part is not AEC-Q101 qualified. It is designed and tested per industrial and traction standards including IEC 60747-2 and EN 50155. While widely used in rail applications, its qualification scope excludes automotive-grade stress testing (e.g., temperature cycling, humidity bias). Automotive use requires formal qualification by the end customer per ISO/TS 16949 processes.
D770N18TXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AA, A-PUK
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io):
- 770A
- Voltage - Forward (Vf) (Max) @ If:
- 1.08 V @ 400 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 30 mA @ 1800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -40°C ~ 180°C
D770N18TXPSA1 FAQ
1.How can I place an order for D770N18TXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D770N18TXPSA1 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 D770N18TXPSA1 reliable?
The price and inventory of D770N18TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D770N18TXPSA1 is usually 5 days.
3.What payment methods are accepted for D770N18TXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D770N18TXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D770N18TXPSA1?
D770N18TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D770N18TXPSA1 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 D770N18TXPSA1?
For technical support, including D770N18TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D770N18TXPSA1 requirements.
6.How does Aetrix verify that D770N18TXPSA1 is sourced from the original manufacturer or authorized distributors?
All D770N18TXPSA1 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 D770N18TXPSA1 meets industry standards.
7.What is the process for return or replacement of D770N18TXPSA1?
All D770N18TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D770N18TXPSA1, 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 D770N18TXPSA1 part is unused and in its original packaging.
Return procedure for D770N18TXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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