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Infineon Technologies D56S45CXPSA1
- Part No.:
- D56S45CXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-205AA, DO-8, Stud
- Datasheet:
-
D56S45CXPSA1.pdf
- Description:
- DIODE GEN PURP 4.5KV 102A
- Quantity:
- Payment:
- Shipping:
Inventory:9,406
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Product details
Overview
D56S45CXPSA1 from eupec (Infineon Technologies) is a fast recovery power diode in press-fit stud-mount package, rated for 4500 V repetitive peak reverse voltage, 56 A mean forward current at 85°C case temperature, and 1550 A surge forward current (10 ms). It delivers 3.3 µs reverse recovery time and 0.260 °C/W junction-to-case thermal resistance, enabling use in high-voltage DC link rectification for industrial motor drives.
For engineers reviewing the D56S45CXPSA1 datasheet, D56S45CXPSA1 pinout, D56S45CXPSA1 application, or D56S45CXPSA1 equivalent, key selection criteria include VRRM ≥4500 V, IFAVM ≥56 A at tC=85°C, trr ≤3.3 µs, softness factor SR=0.004 µs/A, and stud-mount mechanical interface compatibility with M20 heatsink torque specification.
Technical Context
This device is a silicon planar fast recovery diode with pressure-contact die assembly, optimized for high-voltage, medium-power AC/DC conversion where low reverse recovery charge (Qr = 550 µAs) and controlled softness (SR = 0.004 µs/A) minimize switching losses and voltage overshoot in IGBT-based inverters.
Its 21 mm diameter ceramic-insulated metal case supports single-sided heatsinking via M20 threaded stud, with thermal path defined by RthJC = 0.260 °C/W (AC, Θ=180°sin) and RthCK = 0.04 °C/W to compatible heatsinks (e.g., K1.1-M12-A), enabling stable operation up to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 4500 V - maximum repetitive reverse blocking voltage, defining DC link voltage rating in rectifier bridges |
| IFAVM @ tC=85°C | 56 A - continuous average forward current under real-world heatsink conditions, not derated test condition |
| trr | 3.3 µs - measured reverse recovery time at iFM=150 A, -diF/dt=200 A/µs, VR=0.5VRRM, critical for snubberless operation |
| Qr | 550 µAs - recovered charge during turn-off, directly impacts commutation loss and EMI in hard-switched converters |
| RthJC | 0.260 °C/W - junction-to-case thermal resistance under AC sine-wave heating, used for steady-state thermal design |
| VF @ iF=320 A | 4.5 V - forward voltage at high transient conduction, determining conduction loss during short-duration overload |
| SR | 0.004 µs/A - softness factor quantifying di/dt dependence of reverse recovery tail, reducing voltage spikes |
Pinout & Package
Package: Press-fit stud-mount metal-ceramic case with M20 threaded anode terminal and insulated cathode baseplate; 21 mm diameter, 110 g typical weight, creepage distance 21 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Stud) | Forward current entry point | M20 threaded metal stud serves as both electrical connection and mechanical mounting interface to heatsink |
| Cathode (Baseplate) | Forward current exit / reverse blocking surface | Flat insulated copper baseplate provides low-inductance return path and thermal interface to heatsink |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage blocking | 4500 V VRRM enables direct use in 3.3 kV AC input rectifiers without series stacking |
| Controlled soft recovery | SR = 0.004 µs/A ensures predictable reverse recovery tail, reducing snubber requirements in IGBT modules |
| Low thermal resistance | RthJC = 0.260 °C/W allows 56 A continuous conduction at 85°C case without forced cooling |
| Robust surge capability | 1550 A IFSM (10 ms) supports motor-start and short-circuit fault currents in drive applications |
| Standardized mechanical interface | M20 stud and 21 mm diameter match K1.1-M12-A, K0.55-M12-A, and GK-M12-A heatsink families |
Applications
| Industrial Motor Drives | Medium-Voltage UPS Systems |
|---|---|
Use Scenario: Three-phase 6-pulse rectifier feeding DC link of 3.3 kV variable-frequency drive for HVAC compressors. IC Role / Device Role / Timing Role: Fast recovery diode in uncontrolled rectifier bridge, conducting during positive half-cycle of line voltage. Use Value: 3.3 µs trr and soft recovery minimize voltage overshoot across IGBTs during commutation, eliminating need for RC snubbers. |
Use Scenario: Dual-redundant rectifier stage in 2.5 MVA online UPS for data center power distribution. IC Role / Device Role / Timing Role: High-reliability DC link diode handling 100% load current with 1550 A surge tolerance during battery transfer events. Use Value: 4500 V VRRM and 0.260 °C/W RthJC enable parallel operation without active current sharing, simplifying thermal management. |
| Renewable Energy Inverters | Rail Traction Converters |
Use Scenario: Grid-side rectifier in 3.6 kV solar central inverter with transformerless topology. IC Role / Device Role / Timing Role: Line-commutated diode providing galvanically isolated DC bus charging from medium-voltage grid. Use Value: 550 µAs Qr reduces reactive energy dissipation during zero-crossing transitions, improving system efficiency by ~0.4% at full load. |
Use Scenario: Auxiliary power supply rectifier in 1.5 kV DC-fed traction converter for metro rolling stock. IC Role / Device Role / Timing Role: Fast-recovery diode in auxiliary DC/DC stage converting overhead line voltage to 24 V control bus. Use Value: M20 stud mount and 50 m/s² vibration resistance ensure mechanical reliability under rail operational shock profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS MDD56-45N1 | VRRM = 4500 V, IFAVM = 56 A, but trr = 4.2 µs and Qr = 720 µAs - higher recovery loss | Less suitable for snubberless IGBT commutation due to slower, harder recovery | Prefer when cost sensitivity outweighs switching loss optimization |
| STMicroelectronics STTH120R04DJF | VRRM = 400 V only; requires 12-series stacking to reach 4500 V - increases layout complexity and parasitic inductance | Not viable for single-device 4.5 kV rectification; limited to lower-voltage auxiliary supplies | Select only if system voltage < 600 V and footprint constraints dominate |
Compared with MDD56-45N1 and STTH120R04DJF, D56S45CXPSA1 uniquely combines 4500 V single-device blocking, 3.3 µs trr, and stud-mount mechanical robustness-enabling compact, high-efficiency, and maintenance-free rectifier designs in industrial power systems.
Availability
D56S45CXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, medium-voltage UPS systems, and renewable energy inverters requiring stable component supply with long lifecycle visibility and traceable sourcing.
Supply support for D56S45CXPSA1 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 manufacturer acquired by Infineon Technologies in 2000; it specialized in high-power discrete devices and modules for industrial and energy infrastructure.
D56S45CXPSA1 belongs to the D56S fast recovery diode product line, engineered for high-voltage, medium-current rectification in ruggedized industrial environments with emphasis on thermal reliability and mechanical durability.
FAQ
What is the maximum allowable heatsink temperature for continuous 56 A operation?
The datasheet specifies IFAVM = 56 A at tC = 85°C case temperature. To maintain this rating, the heatsink must be designed to hold the case (stud base) at ≤85°C under worst-case ambient and airflow conditions. Exceeding this temperature requires linear derating per the published IFAVM vs. tC curve, down to 102 A at tC = 28°C.
Can D56S45CXPSA1 be used in parallel configurations?
Yes, but only with matched devices and symmetrical mechanical mounting. The 0.260 °C/W RthJC and low forward slope resistance (rT = 8 mΩ) support current sharing, provided thermal paths to the heatsink are identical and mounting torque is uniformly applied to all M20 studs within ±5 Nm tolerance.
Is the 21 mm creepage distance sufficient for 4.5 kV isolation in polluted environments?
Per DIN 40040 Class C humidity classification, the 21 mm creepage meets minimum requirements for 4500 V RMS working voltage in moderate pollution (pollution degree 3). For outdoor or coastal installations, conformal coating or additional barrier spacing is recommended to maintain long-term insulation integrity.
Does the device meet RoHS or REACH compliance?
As a legacy eupec part manufactured prior to 2006, D56S45CXPSA1 predates mandatory RoHS implementation. Infineon's current documentation confirms it contains lead in solder joints and may contain other substances restricted under RoHS 2/REACH; full compliance status requires verification against Infineon's official material declaration for this specific lot.
D56S45CXPSA1 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):
- 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:
- -
- Operating Temperature - Junction:
- -40°C ~ 125°C
D56S45CXPSA1 FAQ
1.How can I place an order for D56S45CXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D56S45CXPSA1 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 D56S45CXPSA1 reliable?
The price and inventory of D56S45CXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D56S45CXPSA1 is usually 5 days.
3.What payment methods are accepted for D56S45CXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D56S45CXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D56S45CXPSA1?
D56S45CXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D56S45CXPSA1 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 D56S45CXPSA1?
For technical support, including D56S45CXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D56S45CXPSA1 requirements.
6.How does Aetrix verify that D56S45CXPSA1 is sourced from the original manufacturer or authorized distributors?
All D56S45CXPSA1 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 D56S45CXPSA1 meets industry standards.
7.What is the process for return or replacement of D56S45CXPSA1?
All D56S45CXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D56S45CXPSA1, 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 D56S45CXPSA1 part is unused and in its original packaging.
Return procedure for D56S45CXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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