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Infineon Technologies D56U45CPRXPSA1
- Part No.:
- D56U45CPRXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- Stud
- Datasheet:
-
D56U45CPRXPSA1.pdf
- Description:
- DIODE GP 4.5KV 102A DSW272-1
- Quantity:
- Payment:
- Shipping:
Inventory:8,138
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Product details
Overview
D56U45CPRXPSA1 from eupec (Infineon Technologies) is a high-voltage, fast-recovery power diode designed for series-connected thyristor/diode stacks in industrial HVDC and medium-frequency rectification systems. It delivers 4500 V repetitive peak reverse voltage (VRRM), 140 A RMS forward current (IFRMSM), and 3.3 µs reverse recovery time (trr) at 125°C junction temperature, enabling efficient operation in 3-phase bridge rectifiers for traction converters and static VAR compensators.
For engineers reviewing the D56U45CPRXPSA1 datasheet, D56U45CPRXPSA1 pinout, D56U45CPRXPSA1 application, or D56U45CPRXPSA1 equivalent, key selection criteria include its pressure-contact 21 mm disc package, 0.325 °C/W junction-to-case thermal resistance under DC conditions, soft recovery behavior (SR = 0.004 µs/A), and compatibility with M12 heatsink mounting per K1.1-M12-A specification.
Technical Context
This diode employs planar passivated silicon die with controlled lifetime reduction to achieve fast, soft reverse recovery-critical for minimizing switching losses and voltage overshoot in high-dI/dt applications like line-commutated inverters. Its 8 mΩ forward slope resistance (rT) and 1.64 V threshold voltage (V(TO)) define the conduction knee at elevated temperatures.
The device operates within a -40°C to +125°C case temperature range and requires single-sided heatsinking with ≤0.04 °C/W interface resistance. Its 230 A peak reverse recovery current (IRM) and 550 µAs recovered charge (Qr) are specified under standardized IEC 747-2 test conditions (iFM = 150 A, -diF/dt = 200 A/µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 4500 V - maximum repetitive reverse blocking voltage, enabling use in 3.3 kV-class HVDC valve arms |
| IFRMSM | 140 A - RMS forward current rating at case temperature ≤73°C, defining continuous conduction capability |
| trr | 3.3 µs - reverse recovery time at 125°C, ensuring low commutation losses in 500–2000 Hz converters |
| rT | 8 mΩ - forward slope resistance at 125°C, directly determining conduction loss at high load currents |
| RthJC (DC) | 0.325 °C/W - junction-to-case thermal resistance under steady-state DC, critical for heatsink sizing |
| Qr | 550 µAs - recovered charge during turn-off, influencing snubber design and EMI generation |
| SR | 0.004 µs/A - softness factor quantifying di/dt dependence of reverse recovery tail, reducing voltage spikes |
Pinout & Package
Package: 21 mm diameter press-fit disc diode with isolated anode and cathode metal surfaces; mounted via M20 torque (20 Nm) to heatsink K1.1-M12-A or equivalent; weight 110 g; creepage distance 21 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | High-side current entry point | Press-contact surface requiring flat, clean heatsink interface; carries full forward current and reverse blocking stress |
| Cathode | Low-side current exit point | Isolated metal surface electrically referenced to system ground or negative rail; must maintain ≥21 mm creepage |
Key Features
| Feature | Design Value |
|---|---|
| Soft reverse recovery | SR = 0.004 µs/A ensures gradual current decay, reducing dv/dt stress on parallel thyristors |
| High surge robustness | 1350 A non-repetitive surge current (IFSM) supports fault clearing in grid-tied rectifier stacks |
| Thermal stability | Rated for 125°C max junction temperature with validated RthJC up to 0.340 °C/W at AC conduction |
| Standardized mechanical interface | M12 mounting and K1.1-M12-A heatsink compatibility enable drop-in replacement in legacy EUPEC valve designs |
Applications
| High-Voltage DC Transmission | Traction Motor Drives |
|---|---|
Use Scenario: Series-connected diode stacks in ±500 kV HVDC converter valves performing unidirectional power flow control. IC Role / Device Role / Timing Role: Main freewheeling and rectification element handling 2–4 kA DC current with forced-air or oil cooling. Use Value: 4500 V VRRM and 140 A IFRMSM allow fewer series devices per arm, reducing complexity and failure points. | Use Scenario: Line-commutated rectifier feeding DC link of 3-level NPC inverters in railway locomotive propulsion systems. IC Role / Device Role / Timing Role: Fast, soft-recovery diode enabling reliable commutation at 1–2 kHz with minimal snubber loss. Use Value: 3.3 µs trr and 0.004 µs/A softness minimize voltage overshoot across IGBTs during turn-on transitions. |
| Static VAR Compensation | Industrial Medium-Frequency Rectification |
Use Scenario: Thyristor-controlled reactor (TCR) modules in utility-scale reactive power compensation systems operating at 50/60 Hz. IC Role / Device Role / Timing Role: Anti-parallel diode providing path for reactive current circulation during zero-crossing intervals. Use Value: 50 mA max reverse leakage at 125°C ensures stable conduction angle control without thermal runaway. | Use Scenario: 1 kHz–10 kHz induction heating power supplies using phase-controlled rectifier front-ends. IC Role / Device Role / Timing Role: High-current, high-speed rectifier managing 100–200 A RMS loads with rapid polarity reversal. Use Value: 230 A IRM and 550 µAs Qr support predictable snubber sizing and reduced EMI filter burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage fast diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DD560N45K | Same VRRM (4500 V), higher IFRMSM (160 A), lower RthJC (0.245 °C/W DC), but larger 28 mm package | Requires redesigned heatsink interface and mounting hardware; suitable only where space and thermal margin permit | Select when higher RMS current headroom and lower thermal resistance justify mechanical redesign |
| D56U40CPRXPSA1 | Identical package and thermal specs, but rated for 4000 V VRRM and 1200 A IFSM (vs. 1350 A) | Acceptable in 2.5–3.3 kV systems with lower overvoltage margin requirements | Choose for cost-sensitive 4 kV-class designs where 500 V derating margin is acceptable |
Compared with DD560N45K and D56U40CPRXPSA1, D56U45CPRXPSA1 uniquely balances 4500 V blocking, 140 A RMS rating, and 21 mm form factor-making it optimal for retrofitting existing EUPEC 21 mm valve assemblies without heatsink modification.
Availability
D56U45CPRXPSA1 is available at Aetrix Electronics and suitable for high-voltage rectification, traction converter design, and static VAR compensation requiring stable component supply across multi-year industrial programs.
Supply support for D56U45CPRXPSA1 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
eupec was a European power semiconductor joint venture later fully integrated into Infineon Technologies, specializing in high-power discrete devices and modules for industrial, energy, and traction markets.
D56U45CPRXPSA1 belongs to eupec's D56U series of press-pack fast recovery diodes, engineered specifically for series-stacking in high-reliability HVDC and medium-frequency rectifier applications where thermal stability and soft switching are mandatory.
FAQ
What is the maximum allowable mounting torque for D56U45CPRXPSA1?
The specified tightening torque is 20 Nm applied to the M20 threaded stud. Exceeding this value risks deforming the internal pressure-contact structure, increasing forward voltage and accelerating thermal fatigue. Torque must be applied uniformly using a calibrated tool, and the heatsink surface must be flat to ±0.05 mm across the 21 mm contact area.
Can D56U45CPRXPSA1 be used in parallel configurations?
No-this device is not characterized or guaranteed for parallel operation. Its forward voltage spread and thermal coupling characteristics are not matched for current sharing. Parallel use requires external ballasting resistors or active current balancing, which negates efficiency gains and is not recommended per eupec application guidance.
What heatsink types are certified for use with D56U45CPRXPSA1?
Only heatsinks conforming to eupec's K1.1-M12-A, K0.55-M12-A, or GK-M12-A mechanical specifications are validated. These define precise flatness, surface finish (Ra ≤ 1.6 µm), and M12 mounting hole geometry. Use of non-certified heatsinks voids thermal performance guarantees and may cause premature failure due to uneven pressure distribution.
Does D56U45CPRXPSA1 meet RoHS or REACH compliance?
As a legacy eupec part manufactured prior to 2006, D56U45CPRXPSA1 contains leaded solder in its internal interconnects and is exempt under RoHS Annex III (category 7a). Full material declarations and SVHC screening reports are available upon request from Aetrix Electronics' technical support team for compliance documentation purposes.
D56U45CPRXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Stud
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 4500 V
- Current - Average Rectified (Io):
- 102A
- Voltage - Forward (Vf) (Max) @ If:
- 4.5 V @ 320 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 3.3 µs
- Current - Reverse Leakage @ Vr:
- 5 mA @ 4500 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Stud Mount
- Supplier Device Package:
- BG-DSW272-1
- Operating Temperature - Junction:
- 125°C
D56U45CPRXPSA1 FAQ
1.How can I place an order for D56U45CPRXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D56U45CPRXPSA1 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 D56U45CPRXPSA1 reliable?
The price and inventory of D56U45CPRXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D56U45CPRXPSA1 is usually 5 days.
3.What payment methods are accepted for D56U45CPRXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D56U45CPRXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D56U45CPRXPSA1?
D56U45CPRXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D56U45CPRXPSA1 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 D56U45CPRXPSA1?
For technical support, including D56U45CPRXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D56U45CPRXPSA1 requirements.
6.How does Aetrix verify that D56U45CPRXPSA1 is sourced from the original manufacturer or authorized distributors?
All D56U45CPRXPSA1 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 D56U45CPRXPSA1 meets industry standards.
7.What is the process for return or replacement of D56U45CPRXPSA1?
All D56U45CPRXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D56U45CPRXPSA1, 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 D56U45CPRXPSA1 part is unused and in its original packaging.
Return procedure for D56U45CPRXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D56U45CPRXPSA1 Tags
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