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Infineon Technologies ND171N18KHPSA2
- Part No.:
- ND171N18KHPSA2
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
ND171N18KHPSA2.pdf
- Description:
- DIODE GEN PURP 1.8KV 171A
- Quantity:
- Payment:
- Shipping:
Inventory:8
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Product details
Overview
ND171N18KHPSA2 from Semikron is a press-pack dual-diode rectifier module rated for 1800 V repetitive peak reverse voltage (VRRM), 171 A average on-state current (IFAVM) at TC = 100°C, and 270 A RMS on-state current (IFRMSM), designed for high-power industrial AC/DC conversion in six-pulse bridge configurations.
For engineers reviewing the ND171N18KHPSA2 datasheet, ND171N18KHPSA2 pinout, ND171N18KHPSA2 application, or ND171N18KHPSA2 equivalent, key selection criteria include junction-to-case thermal resistance (0.126 °C/W per arm), surge current capability (5600 A @ 10 ms), and pressure-contact Si pellet construction with AlN isolation for high-reliability traction and medium-voltage drive systems.
Technical Context
This dual-arm rectifier module integrates two independent high-voltage diode chips in a single press-pack housing with isolated copper baseplates, enabling parallel operation without external balancing components. Its 1800 V VRRM rating supports 1380 V AC line-to-line input in B6 bridge topologies with 2.5 kV RMS insulation test voltage.
The module uses silicon die with threshold voltage (V(TO)) of 0.75 V and slope resistance (rT) of 0.8 mΩ at Tvj max, delivering low conduction loss under 500 A forward current (vF ≤ 1.26 V). Thermal performance is defined by transient impedance models for both natural and forced-air cooling on KM17 heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - supports 1380 VAC line-to-line input in six-pulse rectifiers with 1.3× safety margin |
| IFAVM | 171 A @ TC = 100°C - continuous DC output current capability per arm in forced-air-cooled drives |
| IFRMSM | 270 A - RMS current handling for sinusoidal or phase-controlled waveforms in industrial converters |
| RthJC | 0.126 °C/W per arm - enables 150°C max junction temperature with ≤19.2 W conduction loss per arm |
| IFS M | 5600 A @ 10 ms, Tvj max - withstands short-circuit currents in motor drive DC-link protection |
| vF | ≤1.26 V @ iF = 500 A, Tvj max - low forward drop reduces power loss in high-current rectification stages |
| Qr | Not specified in provided data - recovery charge not listed in available datasheet excerpt |
Pinout & Package
ND171N18KHPSA2 is housed in a press-pack module with two isolated copper baseplates (anode/cathode terminals per arm) and M1/M2 threaded terminals. Mechanical mounting uses M1 screws (6 Nm ±15%) and electrical connections use M2 terminals (6 Nm ±10%). Weight: 310 g; creepage distance: 15 mm; internal isolation: AlN ceramic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode Arm 1 (A1) | Positive input terminal for first diode arm | Connects to AC phase input in B6 bridge; rated for full 171 A IFAVM and 1800 V isolation |
| Cathode Arm 1 (K1) | Negative output terminal for first diode arm | Routes rectified current to DC bus; electrically isolated from A2/K2 via AlN substrate |
| Anode Arm 2 (A2) | Positive input terminal for second diode arm | Independent AC phase connection; enables dual-arm paralleling or split-phase rectification |
| Cathode Arm 2 (K2) | Negative output terminal for second diode arm | Shared cathode configuration possible; requires external busbar layout to maintain thermal symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si pellet | Enables high-current density and replaceable die without solder reflow; supports field maintenance |
| AlN ceramic isolation | Provides 2.5 kV RMS insulation and 0.126 °C/W RthJC for reliable operation in harsh environments |
| Dual-arm independent structure | Allows flexible B2/B6 bridge implementation and thermal load distribution across two baseplates |
| Rated for 150°C junction | Supports operation in high-ambient industrial enclosures without derating below 100°C case temperature |
Applications
| Industrial Motor Drives | Traction Converters |
|---|---|
Use Scenario: Six-pulse rectification in 400–690 VAC variable-frequency drives for pumps and compressors. IC Role / Device Role / Timing Role: Dual-arm diode module providing unidirectional DC bus charging with 171 A continuous output per arm. Use Value: Low RthJC (0.126 °C/W) maintains junction temperature ≤150°C under full-load conduction loss. | Use Scenario: Line-side rectification in rail traction inverters feeding 1500 VDC overhead catenary systems. IC Role / Device Role / Timing Role: High-voltage diode module handling 1800 V reverse blocking and 5600 A surge during regenerative braking events. Use Value: 2.5 kV insulation test voltage ensures compliance with EN 50155 for rolling stock electronics. |
| Renewable Energy Inverters | High-Power UPS Systems |
Use Scenario: Grid-tied solar central inverters requiring 1000+ VDC bus generation from three-phase AC input. IC Role / Device Role / Timing Role: B6 bridge rectifier arm enabling efficient energy transfer with minimal conduction loss (vF ≤ 1.26 V). Use Value: 270 A IFRMSM rating supports high crest-factor waveforms typical in photovoltaic generation profiles. | Use Scenario: Double-conversion online UPS units delivering clean 400 VAC output from utility or generator input. IC Role / Device Role / Timing Role: Rectifier module supplying stable DC link for IGBT-based inverter stage under dynamic load transients. Use Value: 5600 A IFSM rating handles inrush currents during battery recharge cycles without thermal runaway. |
Availability
ND171N18KHPSA2 is available at Aetrix Electronics and suitable for industrial motor drives, traction converters, renewable energy inverters, and high-power UPS systems requiring stable component supply with long lifecycle support.
Supply support for ND171N18KHPSA2 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, traction, and renewable energy applications.
This ND-series press-pack rectifier module belongs to Semikron's high-power discrete diode portfolio, engineered for ruggedized medium-voltage AC/DC conversion where solder-free assembly and field-replaceable dies are critical.
FAQ
What is the maximum junction temperature for ND171N18KHPSA2?
The maximum junction temperature (Tvj max) is 150°C, as confirmed in the datasheet's "Thermische Eigenschaften" section. This rating applies under all operating conditions including surge current events and defines the upper thermal limit for safe device operation.
Does ND171N18KHPSA2 require a heatsink? If so, what type is recommended?
Yes - it requires an externally mounted heatsink. The datasheet specifies KM17 heatsinks: KM17 (60W) for natural cooling and KM17 (Papst 4650) for forced-air cooling. Thermal design must respect RthCH max of 0.03 °C/W per module to maintain safe junction temperatures.
Is ND171N18KHPSA2 RoHS compliant and AEC-Q101 qualified?
No - this part is not automotive-qualified. The datasheet identifies it as a general industrial rectifier module (Netz-Dioden-Modul), with no AEC-Q101 reference. RoHS status is not stated in the provided document; verification requires Semikron's official compliance documentation.
How is the isolation between arms achieved in ND171N18KHPSA2?
Isolation between the two diode arms is achieved via aluminum nitride (AlN) ceramic substrates separating the copper baseplates. This provides 2.5 kV RMS insulation test voltage and ensures galvanic separation required for multi-arm bridge configurations.
ND171N18KHPSA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io):
- 171A
- Voltage - Forward (Vf) (Max) @ If:
- 1.26 V @ 500 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 20 mA @ 1800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- 150°C
ND171N18KHPSA2 FAQ
1.How can I place an order for ND171N18KHPSA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ND171N18KHPSA2 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 ND171N18KHPSA2 reliable?
The price and inventory of ND171N18KHPSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ND171N18KHPSA2 is usually 5 days.
3.What payment methods are accepted for ND171N18KHPSA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ND171N18KHPSA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ND171N18KHPSA2?
ND171N18KHPSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ND171N18KHPSA2 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 ND171N18KHPSA2?
For technical support, including ND171N18KHPSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ND171N18KHPSA2 requirements.
6.How does Aetrix verify that ND171N18KHPSA2 is sourced from the original manufacturer or authorized distributors?
All ND171N18KHPSA2 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 ND171N18KHPSA2 meets industry standards.
7.What is the process for return or replacement of ND171N18KHPSA2?
All ND171N18KHPSA2 units undergo pre-shipment inspection (PSI). If there is an issue with ND171N18KHPSA2, 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 ND171N18KHPSA2 part is unused and in its original packaging.
Return procedure for ND171N18KHPSA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ND171N18KHPSA2 Tags
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