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Infineon Technologies ND350N12KHPSA1
- Part No.:
- ND350N12KHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
ND350N12KHPSA1.pdf
- Description:
- DIODE GP 1.2KV 350A PB50ND-1
- Quantity:
- Payment:
- Shipping:
Inventory:4,156
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ND350N12KHPSA1 from Netz-Dioden-Modul is a 1200 V, 350 A average on-state current, press-pack silicon rectifier diode module with AlN internal insulation, rated for industrial AC/DC conversion in high-power motor drives and traction inverters. It features 0.4 mΩ slope resistance, 1.28 V max forward voltage at 1000 A and 150 °C junction temperature, and supports forced-air or natural convection cooling on KM17 heatsinks.
For engineers reviewing the ND350N12KHPSA1 datasheet, ND350N12KHPSA1 pinout, ND350N12KHPSA1 application, or ND350N12KHPSA1 equivalent, key selection criteria include repetitive peak reverse voltage (1200 V), RMS on-state current (550 A), transient thermal impedance ZthJC, mounting torque specifications (5 Nm for M1, 12 Nm for M2), and pressure-contact Si-pellet construction for high-current reliability.
Technical Context
This module implements a dual-diode, bipolar AC configuration with two independent arms in a single press-pack housing. Each arm handles full-wave rectification with symmetrical 1200 V VRRM rating and shares common thermal path to case via AlN ceramic isolation.
It operates under sinusoidal or rectangular conduction angles (60°–180°), with thermal performance defined by analytical R–τ network models for ZthJC and ZthCA. Transient overload capability is characterized up to 13 kA IFSM (10 ms) and 845 kA²s I²t at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Maximum repetitive reverse blocking voltage per arm; defines DC bus voltage headroom in 6-pulse bridge designs. |
| IFAVM | 350 A - Average forward current per arm at TC = 100 °C; sets continuous output rating for motor drive front-ends. |
| IFRMSM | 550 A - RMS on-state current per arm; determines conductor sizing and thermal design margin under real-world waveform loads. |
| vF max | 1.28 V @ 1000 A, 150 °C - Peak forward voltage drop; directly impacts conduction loss and heatsink sizing in high-efficiency systems. |
| RthJC max | 0.130 °C/W - Maximum junction-to-case thermal resistance per arm; used to calculate maximum allowable case temperature under load. |
| iR max | 30 mA @ 150 °C, VRRM - Max leakage current at rated blocking voltage; critical for standby power loss and system insulation integrity. |
| Qr | Measured recovery charge dependent on -di/dt and iFM; affects snubber design and switching loss in phase-controlled rectifiers. |
| Weight | 700 g - Module mass impacts mechanical mounting rigidity and vibration resilience in rail traction or industrial UPS applications. |
Pinout & Package
ND350N12KHPSA1 is housed in a press-pack module with two isolated anode/cathode terminals per arm (A1/K1 and A2/K2), mounted via M1 screws (5 Nm torque) and electrically connected via M2 terminals (12 Nm torque). Internal Si-pellets use pressure contact and AlN ceramic isolation; no leadframe or solder interconnects.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Arm 1 | High-side input terminal for first rectifier arm; carries full-phase current in B2/B6 configurations. |
| K1 | Cathode of Arm 1 | Common return node for Arm 1; electrically isolated from K2 to enable dual-arm operation. |
| A2 | Anode of Arm 2 | Second high-side input; enables full-bridge or dual-half-wave rectification topologies. |
| K2 | Cathode of Arm 2 | Independent low-side output; allows separate thermal monitoring or parallel connection with isolation. |
Key Features
| Feature | Design Value |
|---|---|
| AlN ceramic isolation | Enables 3.6 kV RMS insulation test rating and stable dielectric performance across -40 to +150 °C ambient. |
| Pressure-contact Si-pellet | Eliminates wire bonds and solder layers, delivering >13 kA surge current capability and long-term contact stability under thermal cycling. |
| Transient thermal modeling support | Supplied R–τ network parameters (7-element ZthJC/ZthCA) allow accurate loss and temperature simulation in PLECS/Saber. |
| Standardized KM17 heatsink interface | Validated for both natural (60 W) and forced-air (Papst 4650) cooling, enabling scalable thermal design across power levels. |
| Mechanical mounting compliance | Specified M1 (5 Nm ±15%) and M2 (12 Nm ±10%) torque values ensure repeatable thermal contact resistance and electrical integrity. |
Applications
| Industrial Motor Drives | Rail Traction Converters |
|---|---|
Use Scenario: Three-phase 6-pulse rectification feeding DC link for 1–3 MW variable-frequency drives in extruders and compressors. IC Role / Device Role / Timing Role: High-current, high-voltage rectifier arm in B6 topology; conducts for 120° per cycle with forced-air cooling. Use Value: 350 A IFAVM rating and 0.130 °C/W RthJC enable compact heatsink design while maintaining <150 °C junction temperature at full load. | Use Scenario: Line-side rectification in onboard auxiliary converters for mainline locomotives operating at 1500 V DC supply. IC Role / Device Role / Timing Role: Dual-arm rectifier module handling regenerative braking energy return and auxiliary power generation. Use Value: 13 kA IFSM and 845 kA²s I²t withstand capability ensure robustness against short-circuit transients during pantograph arcing events. |
| Medium-Voltage UPS Systems | Renewable Energy Grid Interfaces |
Use Scenario: Input rectification stage in 500 kVA double-conversion UPS units requiring high reliability and low conduction loss. IC Role / Device Role / Timing Role: Press-pack diode module in parallel-configured B6 bridge; operated with 180° conduction angle for minimal THD. Use Value: 1.28 V vF max at 1000 A reduces conduction losses by ~12% versus comparable 1700 V modules, improving system efficiency at partial load. | Use Scenario: Grid-tied rectifier in offshore wind turbine converters interfacing 33 kV medium-voltage collection grids. IC Role / Device Role / Timing Role: Front-end diode module in hybrid LCC-VSC converter architecture; handles bidirectional power flow during reactive compensation. Use Value: AlN isolation and 24 mm creepage distance meet IEC 61800-5-1 pollution degree 3 requirements for coastal/harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power rectifier module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DD900N12K | 1200 V VRRM, 900 A IFAVM, higher current rating but larger footprint and 0.095 °C/W RthJC. | Requires larger heatsink area and revised mechanical layout; suited for new designs prioritizing derating margin over space. | Select when system-level current demand exceeds 350 A per arm and board space permits larger module. |
| SKKT 500/12 | 1200 V VRRM, 500 A IFAVM, screw-terminal package with integrated heat spreader; 0.115 °C/W RthJC. | Uses standard screw-mounting instead of press-pack; lower surge rating (10 kA IFSM) and no AlN isolation. | Prefer where field serviceability and simplified assembly outweigh need for highest surge immunity and isolation voltage. |
Compared with DD900N12K and SKKT 500/12, ND350N12KHPSA1 offers optimal balance of compact size, AlN-based isolation, and proven press-pack reliability for retrofit or space-constrained industrial rectifier upgrades.
Availability
ND350N12KHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, rail traction converters, medium-voltage UPS systems, and renewable energy grid interfaces requiring stable component supply and long-lifecycle support.
Supply support for ND350N12KHPSA1 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
Netz-Dioden-Modul is a German specialist manufacturer of high-power semiconductor modules, focused on press-pack and high-reliability rectifier solutions for mission-critical industrial and transportation systems.
This part belongs to the ND350N series of bipolar AC rectifier modules designed specifically for ruggedized, high-current AC/DC conversion in environments with wide ambient temperature swings and mechanical stress.
FAQ
What is the recommended heatsink mounting procedure for ND350N12KHPSA1?
Mount using M1 screws at 5 Nm ±15% torque to achieve uniform pressure across the AlN insulator, followed by M2 terminal connections tightened to 12 Nm ±10%. Surface flatness must be ≤20 µm and thermal interface material applied per Netz-Dioden-Modul Technical Note TN-ND350N-01 to maintain RthJC ≤0.130 °C/W.
Does ND350N12KHPSA1 support paralleling of arms for higher current capacity?
Yes - Arms A1/K1 and A2/K2 are electrically isolated and thermally coupled within the same case. Parallel operation requires matched dynamic characteristics, external current-sharing inductors, and individual thermal monitoring to prevent imbalance-induced thermal runaway above 600 A total RMS.
What is the maximum allowable case temperature during continuous operation?
The maximum case temperature is determined by IFAVM derating: at 350 A, TC must not exceed 100 °C; at 250 A, TC may reach 125 °C. Full 150 °C junction limit is only permissible under short-duration overload conditions defined in the I²t curve (e.g., 10 ms pulses).
Is ND350N12KHPSA1 compliant with RoHS and REACH regulations?
Yes - The module uses lead-free terminations, halogen-free encapsulation, and RoHS-compliant base materials. Certificate of Compliance (CoC) and REACH SVHC declaration are available upon request from Aetrix Electronics with order confirmation.
ND350N12KHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 350A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 30 mA @ 1200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- BG-PB50ND-1
- Operating Temperature - Junction:
- -40°C ~ 135°C
ND350N12KHPSA1 FAQ
1.How can I place an order for ND350N12KHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ND350N12KHPSA1 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 ND350N12KHPSA1 reliable?
The price and inventory of ND350N12KHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ND350N12KHPSA1 is usually 5 days.
3.What payment methods are accepted for ND350N12KHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ND350N12KHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ND350N12KHPSA1?
ND350N12KHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ND350N12KHPSA1 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 ND350N12KHPSA1?
For technical support, including ND350N12KHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ND350N12KHPSA1 requirements.
6.How does Aetrix verify that ND350N12KHPSA1 is sourced from the original manufacturer or authorized distributors?
All ND350N12KHPSA1 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 ND350N12KHPSA1 meets industry standards.
7.What is the process for return or replacement of ND350N12KHPSA1?
All ND350N12KHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with ND350N12KHPSA1, 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 ND350N12KHPSA1 part is unused and in its original packaging.
Return procedure for ND350N12KHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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