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Infineon Technologies D1050N18TXPSA1
- Part No.:
- D1050N18TXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-200AB, B-PUK
- Datasheet:
-
D1050N18TXPSA1.pdf
- Description:
- DIODE GEN PURP 1.8KV 1050A
- Quantity:
- Payment:
- Shipping:
Inventory:5,596
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Product details
Overview
D1050N18TXPSA1 from Infineon Technologies is a high-power, press-pack silicon rectifier diode designed for industrial AC/DC conversion in medium-voltage drive systems and traction inverters. It delivers 1050 A average on-state current at TC = 130 °C, supports 1800 V repetitive peak reverse voltage (VRRM), and withstands 24 kA surge current (IFSM) at 10 ms - enabling robust operation in 3-phase line-commutated rectifiers and grid-connected converters.
For engineers reviewing the D1050N18TXPSA1 datasheet, D1050N18TXPSA1 pinout, D1050N18TXPSA1 application, or D1050N18TXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.038 °C/W two-sided), forward voltage drop (1.76 V at 5 kA), recovery charge (Qr ≤ 100 µAs at 100 A), and clamping force requirements (10–24 kN) for reliable thermal interface integrity.
Technical Context
This device is a non-controlled, two-terminal power semiconductor with a single silicon pellet mounted in a pressure-contact package. Its conduction behavior follows a defined on-state characteristic (vF = A + B·iF + C·ln(iF) + D·iF²) and exhibits low slope resistance (rT = 0.17 mΩ) at Tvj max, ensuring predictable forward loss under high-current DC and phase-controlled AC conditions.
Thermal performance is highly dependent on mounting configuration: two-sided cooling yields the lowest RthJC (0.038 °C/W), while anode- or cathode-side-only cooling increases it to 0.064–0.085 °C/W. Transient thermal impedance data confirms suitability for short-duration overload pulses up to 20 half-waves at 50 Hz without exceeding 180 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - Maximum repetitive reverse blocking voltage; defines usable DC bus voltage rating in rectifier bridges. |
| IFAVM @ TC=130°C | 1050 A - Continuous average forward current capability under forced two-sided cooling; sets base-load capacity. |
| IFRMS | 3140 A - RMS on-state current rating; determines thermal stress under sinusoidal or pulsed conduction. |
| IFSM (10 ms) | 24000 A - Peak non-repetitive surge current; enables survival during short-circuit events in motor drives. |
| vF @ 5 kA, Tvj max | 1.76 V - Forward voltage at full-rated pulse current; directly impacts conduction loss and heatsink sizing. |
| RthJC (two-sided) | 0.038 °C/W - Junction-to-case thermal resistance; dictates minimum required heatsink thermal conductance. |
| Qr @ 100 A | ≤100 µAs - Recovered charge during turn-off; influences snubber design and commutation losses in phase-controlled rectifiers. |
Pinout & Package
Package: Press-pack, double-sided cooled, stud-mount diode with isolated anode and cathode terminals. Requires mechanical clamping force of 10–24 kN for optimal thermal and electrical contact. Weight: 280 g. Creepage distance: 25 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Forward current entry point | High-current input terminal; must be thermally and electrically coupled to heatsink via insulated mounting interface. |
| Cathode (2) | Forward current exit point | High-current output terminal; symmetrically mounted opposite anode for balanced thermal path in two-sided cooling. |
Key Features
| Feature | Design Value |
|---|---|
| High surge current capability | 24 kA IFSM (10 ms) - Enables use in fault-prone industrial rectifier applications without derating. |
| Low forward voltage slope resistance | 0.17 mΩ rT - Reduces conduction loss variance across operating current range, improving efficiency predictability. |
| Defined on-state characteristic equation | vF = −0.6685 + 2.114×10⁻⁴·iF + 0.2752·ln(iF) − 0.01385·iF² - Allows precise loss modeling in system-level thermal simulations. |
| Two-sided thermal optimization | RthJC = 0.038 °C/W - Supports compact, high-power-density converter designs when both terminals are actively cooled. |
| Controlled recovery behavior | Qr ≤ 100 µAs at 100 A - Limits reverse recovery energy dissipation, reducing snubber component stress in line-commutated circuits. |
Applications
| Industrial Motor Drives | Traction Rectification |
|---|---|
|
Use Scenario: Three-phase, line-commutated rectifier stage in 2 MW variable-speed drive for extrusion machinery. IC Role / Device Role / Timing Role: Uncontrolled power conversion element conducting continuous 1050 A average current at 130 °C case temperature. Use Value: Enables direct integration into liquid-cooled busbars with minimal thermal interface layers due to low RthJC and high IFAVM rating. |
Use Scenario: Grid-side rectifier in diesel-electric locomotive auxiliary power supply feeding 750 V DC bus. IC Role / Device Role / Timing Role: High-reliability, high-surge diode handling 50 Hz half-wave overloads during regenerative braking transients. Use Value: Survives 20 consecutive 50 Hz half-wave surges at 1600 A peak without exceeding 180 °C junction limit. |
| Medium-Voltage UPS Systems | Renewable Energy Grid Interface |
|
Use Scenario: Input rectifier bridge in 1.5 MVA double-conversion UPS for data center critical load support. IC Role / Device Role / Timing Role: Primary AC/DC conversion device operating continuously at 95% rated load with forced-air heatsinking. Use Value: Delivers stable 1.76 V vF at 5 kA, enabling accurate loss budgeting and thermal margin verification per IEC 62040-3. |
Use Scenario: Front-end rectifier in solar farm central inverter connecting 1200 V DC string to 35 kV AC grid via transformer. IC Role / Device Role / Timing Role: High-voltage, high-current diode supporting 1800 V VRRM and 24 kA IFSM for grid-fault ride-through compliance. Use Value: Meets IEEE 1547-2018 Category III overvoltage withstand requirements with no external crowbar needed. |
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 |
|---|---|---|---|
| DD900N18K | Lower IFAVM (900 A @ TC=130°C); identical VRRM (1800 V); higher RthJC (0.042 °C/W two-sided). | Suitable for lower-base-load applications where 150 A margin is acceptable and thermal interface is less optimized. | Select when cost sensitivity outweighs marginal derating need and existing heatsink design cannot accommodate tighter thermal resistance. |
| D1100N18TXPSA1 | Higher IFAVM (1100 A @ TC=130°C); same VRRM, RthJC, and Qr; requires 12–26 kN clamping force. | Used in next-generation traction converters requiring extended continuous current headroom without changing footprint. | Choose for new designs targeting >10% current margin or where long-term reliability under sustained overload is prioritized. |
Compared with D1050N18TXPSA1, DD900N18K trades 150 A current capacity for slightly relaxed thermal interface demands, while D1100N18TXPSA1 extends continuous current capability within identical thermal and voltage constraints - making the latter ideal for future-proofed industrial drive platforms.
Availability
D1050N18TXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, traction rectification, medium-voltage UPS systems, and renewable energy grid interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing for high-reliability power electronics.
Supply support for D1050N18TXPSA1 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 markets.
This part belongs to Infineon's "Press-Pack Diodes" product line, engineered for high-current, high-voltage industrial rectification where reliability under extreme thermal and mechanical stress is mandatory.
FAQ
What is the maximum allowable clamping force for D1050N18TXPSA1?
The specified clamping force range is 10–24 kN. Exceeding 24 kN risks pellet fracture or metallization damage, while forces below 10 kN increase contact resistance and thermal impedance beyond rated limits. Force must be applied uniformly across both terminals using calibrated torque tools and flat, parallel mounting surfaces.
Can D1050N18TXPSA1 be used with single-sided cooling?
Yes, but with significant derating: RthJC rises to 0.064 °C/W (anode-side) or 0.085 °C/W (cathode-side), reducing maximum IFAVM by ~35–45% at TC = 130 °C. Single-sided use is only recommended for short-duration duty cycles or where mechanical constraints prohibit dual-interface mounting.
What is the typical reverse recovery charge (Qr) at 1600 A?
Per the datasheet Qr diagram, at iFM = 1600 A and Tvj = Tvj max, Qr is approximately 1000 µAs for -di/dt = 100 A/µs. This value scales nonlinearly with current and di/dt - system-level snubber design must reference the full Qr vs. -di/dt curve on page 7, not extrapolate from lower-current points.
Does D1050N18TXPSA1 meet AEC-Q101 qualification?
No. This device is qualified per industrial standards (IEC 60747-2) and Infineon's internal high-reliability test program for power modules, but it is not AEC-Q101 certified. It is intended for industrial, traction, and energy infrastructure - not automotive passenger safety systems.
D1050N18TXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AB, B-PUK
- Packaging:
- Tray
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io):
- 1050A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1000 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 60 mA @ 1800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -40°C ~ 180°C
D1050N18TXPSA1 FAQ
1.How can I place an order for D1050N18TXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D1050N18TXPSA1 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 D1050N18TXPSA1 reliable?
The price and inventory of D1050N18TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D1050N18TXPSA1 is usually 5 days.
3.What payment methods are accepted for D1050N18TXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D1050N18TXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D1050N18TXPSA1?
D1050N18TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D1050N18TXPSA1 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 D1050N18TXPSA1?
For technical support, including D1050N18TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D1050N18TXPSA1 requirements.
6.How does Aetrix verify that D1050N18TXPSA1 is sourced from the original manufacturer or authorized distributors?
All D1050N18TXPSA1 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 D1050N18TXPSA1 meets industry standards.
7.What is the process for return or replacement of D1050N18TXPSA1?
All D1050N18TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D1050N18TXPSA1, 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 D1050N18TXPSA1 part is unused and in its original packaging.
Return procedure for D1050N18TXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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