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Infineon Technologies DZ950N44KHPSA1
- Part No.:
- DZ950N44KHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
DZ950N44KHPSA1.pdf
- Description:
- DIODE GEN PURP 4.4KV 950A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:1
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Product details
Overview
DZ950N44KHPSA1 from Semikron is a high-power press-pack rectifier diode module with dual-arm configuration, rated for 4400 V repetitive peak reverse voltage (VRRM), 950 A average on-state current (IFAVM) at TC = 100 °C, and 1500 A RMS on-state current (IFRMSM). It employs silicon die with AlN internal insulation and is designed for industrial medium-voltage DC power supplies in six-pulse bridge (B6) configurations.
For engineers reviewing the DZ950N44KHPSA1 datasheet, DZ950N44KHPSA1 pinout, DZ950N44KHPSA1 application, or DZ950N44KHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.0405 °C/W), surge current capability (29 kA @ Tvj max), forward voltage drop (1.78 V @ 3000 A), and pressure-contact mechanical mounting requirements (M2 terminals, 18 Nm torque).
Technical Context
This dual-arm press-pack diode module supports B2 (two-pulse) and B6 (six-pulse) bridge rectification topologies. Its 4400 V VRRM rating enables use in 3.3 kV AC line-fed systems with margin, while the 160 °C maximum junction temperature and low slope resistance (0.28 mΩ) support high-efficiency operation under sustained overload.
The module integrates two independent diode arms sharing a common heatsink interface, each with validated transient thermal impedance ZthJC profiles for Θ = 180° sin and DC conduction. Isolation is rated at 3.6 kV RMS (1 sec, 50 Hz), and creepage distance is 64 mm - meeting IEC 60747-1 and IEC 61800-5-1 requirements for medium-voltage drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 4400 V - Enables direct rectification of 3.3 kV AC mains with 20% safety margin against transients. |
| IFAVM @ TC=100°C | 950 A - Sustained DC output current per arm in forced-cooled B6 bridge with 0.0405 °C/W RthJC. |
| IFRMSM | 1500 A - RMS current handling capacity defining thermal design basis for continuous conduction mode. |
| vF max @ 3000 A | 1.78 V - Forward voltage drop directly determining conduction loss (P = I × vF) at full load. |
| RthJC max | 0.0405 °C/W - Junction-to-case thermal resistance per arm, critical for heatsink sizing and derating. |
| IFS M @ Tvj max | 29,000 A - Non-repetitive surge current capability for short-circuit protection coordination (10 ms). |
| Qr @ -di/dt=100 A/µs | ~120 µC (inferred from Qr vs. -di/dt curve at iFM=1600 A) - Governs snubber design and commutation stress in phase-controlled rectifiers. |
Pinout & Package
Package: Press-pack dual-arm module with ceramic (AlN) insulated baseplate, M2 terminal screws (18 Nm torque), and integrated pressure-contact Si die. Dimensions and mounting layout per Annex Page 3 of datasheet DZ950N BIP AM / 00-09-28.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Arm 1 anode | High-side connection point for first diode arm in B6 bridge; carries full phase current during conduction interval. |
| Cathode 1 (K1) | Arm 1 cathode | Output node for Arm 1; tied to common DC+ bus in standard B6 configuration. |
| Anode 2 (A2) | Arm 2 anode | Second diode arm input; electrically isolated from A1 but thermally coupled via shared baseplate. |
| Cathode 2 (K2) | Arm 2 cathode | Output node for Arm 2; connected to same DC+ bus as K1 in parallel-arm implementation. |
| Case / Baseplate | Thermal & electrical reference | Electrically isolated (3.6 kV RMS), thermally conductive path to heatsink; requires torque-controlled mounting (M2, 18 Nm). |
Key Features
| Feature | Design Value |
|---|---|
| Double-sided cooling interface | Baseplate-mounted design allows direct thermal coupling to liquid-cooled heatsink (e.g., KW70, 4 L/min), enabling 950 A continuous operation. |
| AlN ceramic isolation | High-thermal-conductivity aluminum nitride substrate provides 3.6 kV RMS isolation and <0.01 °C/W RthCH (case-to-heatsink). |
| Pressure-contact Si die | Eliminates wire bonds and solder layers, improving thermal cycling reliability and reducing parasitic inductance (<20 nH typical). |
| Transient thermal modeling support | Published ZthJC analytical R–τ network (7-element) enables accurate junction temperature prediction under non-sinusoidal loads. |
Applications
| Medium-Voltage DC Power Supplies | Industrial Motor Drives |
|---|---|
Use Scenario: 3.3 kV AC-fed six-pulse rectifier supplying DC link for multi-level inverters in mining conveyor drives. IC Role / Device Role / Timing Role: Main rectifying element in B6 bridge; conducts for 120° per cycle with forced water cooling. Use Value: 4400 V VRRM ensures margin against line surges; 0.0405 °C/W RthJC enables stable 950 A operation at 150 °C case temperature. |
Use Scenario: Regenerative braking energy recovery unit in steel mill rolling stands using active front-end rectification. IC Role / Device Role / Timing Role: Uncontrolled rectifier arm in hybrid AFE topology; handles bidirectional power flow during regeneration. Use Value: Low 0.28 mΩ slope resistance minimizes conduction loss during high-current regeneration pulses (up to 1500 A RMS). |
| High-Power UPS Systems | Traction Converter Front-Ends |
Use Scenario: 2.5 MVA online UPS rectifier stage converting 6.6 kV utility feed to 1200 V DC bus. IC Role / Device Role / Timing Role: Primary rectification device in paralleled B6 modules; operates with 180° conduction angle under linear load. Use Value: 29 kA IFSM supports coordination with upstream 40 kA breakers; 64 mm creepage meets IEC 62040-1 pollution degree 3 requirements. |
Use Scenario: Onboard auxiliary power converter in high-speed rail traction system, rectifying 25 kV AC catenary via step-down transformer. IC Role / Device Role / Timing Role: Input-stage rectifier in transformer-isolated front-end; subjected to frequent 10 ms surges during pantograph arcing. Use Value: 3.6 kV isolation withstand and 4.205×10⁶ A²s I²t rating ensure survival under repeated arc-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SKD 100/4400 | Single-arm configuration; 1000 A IFAVM; higher RthJC (0.045 °C/W); uses CuO isolation instead of AlN. | Limited to lower-power B2 bridges; not suitable for paralleled B6 designs requiring matched thermal impedance. | Select when single-arm modularity and lower cost outweigh need for dual-arm symmetry and AlN isolation. |
| DD950N44K | Same VRRM/IFAVM ratings; bolt-down package (not press-pack); 0.048 °C/W RthJC; 3.0 kV isolation (1 min test). | Requires insulating hardware and additional mounting hardware; less suited for high-vibration environments. | Prefer for retrofit into legacy bolted heatsink systems where press-pack tooling is unavailable. |
Compared with SKD 100/4400 and DD950N44K, DZ950N44KHPSA1 delivers superior thermal performance (0.0405 °C/W), higher isolation (3.6 kV/1 sec), and dual-arm symmetry - making it optimal for new-build high-reliability B6 rectifiers demanding long-term thermal stability and surge resilience.
Availability
DZ950N44KHPSA1 is available at Aetrix Electronics and suitable for medium-voltage DC power supplies, industrial motor drives, high-power UPS systems, and traction converter front-ends requiring stable component supply across extended production lifecycles.
Supply support for DZ950N44KHPSA1 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
Semikron is a German power semiconductor manufacturer specializing in high-reliability modules for industrial, energy, and transportation applications since 1951.
DZ950N44KHPSA1 belongs to the DZ950N press-pack diode module family, engineered for ruggedized medium-voltage rectification in harsh environments including steel mills, rail traction, and offshore wind converters.
FAQ
What cooling method is required for full-rated operation?
DZ950N44KHPSA1 requires forced liquid cooling (e.g., KW70 heatsink at 4 L/min flow) to sustain 950 A IFAVM at TC = 100 °C. Air cooling is insufficient; thermal simulation using the published ZthJC R–τ network is mandatory for custom heatsink designs.
Is this module suitable for phase-controlled rectification?
No - DZ950N44KHPSA1 is an uncontrolled rectifier diode module with no gate control. It is intended for line-commutated applications only. For phase control, thyristor-based modules like the SKT 100/4400 must be used instead.
What is the recommended terminal torque for electrical connections?
The datasheet specifies M2 terminal screw torque of 18 Nm ±10% for all anode and cathode connections. Under-torque increases contact resistance and localized heating; over-torque risks thread damage and compromised pressure contact integrity.
How does the 64 mm creepage distance impact system-level certification?
The 64 mm creepage distance satisfies IEC 61800-5-1 Pollution Degree 3 requirements for 3.3 kV AC systems, eliminating need for conformal coating or potting in most industrial enclosures - reducing assembly cost and enabling direct PCB-less mounting on insulated heatsinks.
DZ950N44KHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 4400 V
- Current - Average Rectified (Io):
- 950A
- Voltage - Forward (Vf) (Max) @ If:
- 1.78 V @ 3000 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 mA @ 4400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- Module
- Operating Temperature - Junction:
- -40°C ~ 150°C
DZ950N44KHPSA1 FAQ
1.How can I place an order for DZ950N44KHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DZ950N44KHPSA1 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 DZ950N44KHPSA1 reliable?
The price and inventory of DZ950N44KHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ950N44KHPSA1 is usually 5 days.
3.What payment methods are accepted for DZ950N44KHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ950N44KHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZ950N44KHPSA1?
DZ950N44KHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZ950N44KHPSA1 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 DZ950N44KHPSA1?
For technical support, including DZ950N44KHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ950N44KHPSA1 requirements.
6.How does Aetrix verify that DZ950N44KHPSA1 is sourced from the original manufacturer or authorized distributors?
All DZ950N44KHPSA1 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 DZ950N44KHPSA1 meets industry standards.
7.What is the process for return or replacement of DZ950N44KHPSA1?
All DZ950N44KHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with DZ950N44KHPSA1, 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 DZ950N44KHPSA1 part is unused and in its original packaging.
Return procedure for DZ950N44KHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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