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Infineon Technologies DD171N18KHPSA2
- Part No.:
- DD171N18KHPSA2
- Manufacturer:
- Infineon Technologies
- Category:
- Diode Arrays
- Package:
- Module
- Datasheet:
-
DD171N18KHPSA2.pdf
- Description:
- DIODE MODULE GEN PURP 1800V 171A
- Quantity:
- Payment:
- Shipping:
Inventory:4
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Product details
Overview
DD171N18KHPSA2 from Semikron is a dual-arm press-pack rectifier diode 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 DD171N18KHPSA2 datasheet, DD171N18KHPSA2 pinout, DD171N18KHPSA2 application, or DD171N18KHPSA2 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 internal insulation.
Technical Context
This module integrates two independent diode arms in a single press-pack housing, each with a threshold voltage of 0.75 V and slope resistance of 0.8 mΩ at Tvj max, enabling low-conduction-loss operation in high-current DC link applications such as traction converters and medium-voltage UPS systems.
Its transient thermal impedance (ZthJC) is characterized by analytical R–τ elements for Θ = 180° conduction, supporting accurate loss and temperature modeling under non-sinusoidal load conditions; isolation rating is 2.5 kV RMS (1 min) between case and terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - Maximum repetitive reverse blocking voltage per arm, defining usable DC bus voltage headroom in B6 rectifiers. |
| IFAVM | 171 A - Continuous average forward current per arm at 100°C case temperature, sets steady-state power handling limit. |
| IFRMSM | 270 A - RMS on-state current rating, directly constrains thermal design for sinusoidal or distorted load currents. |
| RthJC | 0.126 °C/W - Junction-to-case thermal resistance per arm under DC conditions, critical for heatsink sizing. |
| vF max | 1.26 V - Maximum forward voltage at 500 A and Tvj max, determines conduction loss at full load. |
| IFS M | 5600 A - Non-repetitive surge current per arm at Tvj max and 10 ms, supports short-circuit withstand in drive inverters. |
| Qr | Not specified in provided data - Recovered charge not listed; softness not quantified in source sheet. |
Pinout & Package
DD171N18KHPSA2 uses a press-pack module package with two isolated anode/cathode terminal pairs (one per arm), housed in a ceramic-insulated metal baseplate. Mechanical mounting uses M1 screws (6 Nm ±15%) and M2 terminal screws (6 Nm ±10%). Weight: 310 g; creepage distance: 15 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Arm 1 anode connection | High-side input for first diode arm in B6 bridge; requires insulated mounting to heatsink. |
| Cathode 1 (K1) | Arm 1 cathode connection | Common DC output node for Arm 1; electrically tied to K2 in standard B6 layout. |
| Anode 2 (A2) | Arm 2 anode connection | Second phase input for B6 configuration; galvanically isolated from A1/K1. |
| Cathode 2 (K2) | Arm 2 cathode connection | Shared cathode node with K1; forms positive DC rail when used in common-cathode arrangement. |
Key Features
| Feature | Design Value |
|---|---|
| Si pellet with pressure contact | Enables replaceable, high-current interconnect without solder fatigue; supports field maintenance in traction systems. |
| AlN internal insulation | Provides 2.5 kV RMS isolation and low thermal resistance (0.126 °C/W) between junction and baseplate. |
| Dual-arm symmetry | Identical electrical specs per arm allow balanced current sharing in parallel or multi-pulse rectifier topologies. |
| DC and transient R–τ thermal model | Supplied analytical ZthJC and ZthCA parameters enable precise junction temperature prediction under real-world duty cycles. |
Applications
| Industrial UPS Systems | Traction Motor Drives |
|---|---|
Use Scenario: Three-phase 600–900 VAC input rectification feeding IGBT-based inverter stage in double-conversion UPS. IC Role / Device Role / Timing Role: Dual-arm diode module operating in six-pulse B6 bridge configuration, providing unidirectional DC link charging. Use Value: 171 A IFAVM and 0.126 °C/W RthJC support continuous 150 kW operation with forced-air-cooled KM17 heatsink. | Use Scenario: Regenerative braking energy recovery and line-side rectification in railway auxiliary converters. IC Role / Device Role / Timing Role: High-reliability press-pack diode module used in dual three-phase rectifier banks for 1500 VDC overhead line interface. Use Value: 5600 A IFSM and 150 °C Tvj max ensure robust short-circuit ride-through during pantograph arcing events. |
| Medium-Voltage Variable Frequency Drives | Grid-Scale Energy Storage Rectifiers |
Use Scenario: Input stage of 3.3 kV-class MV drives converting utility AC to DC link for cascaded H-bridge inverters. IC Role / Device Role / Timing Role: Modular rectifier building block deployed in series-string or multi-level front-end topologies. Use Value: 1800 V VRRM and 15 mm creepage distance meet IEC 61800-5-1 pollution degree 3 requirements for outdoor substations. | Use Scenario: Bi-directional power conversion interface between 1000 VDC battery stack and 35 kV grid via transformer-coupled rectifier/inverter. IC Role / Device Role / Timing Role: Unidirectional, high-efficiency AC/DC conversion element in modular multilevel rectifier (MMR) submodules. Use Value: 270 A IFRMSM and low 0.8 mΩ rT minimize conduction losses across 24/7 charge/discharge cycles. |
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 |
|---|---|---|---|
| SKKD 162/18 | 1800 V VRRM, 162 A IFAVM, 0.145 °C/W RthJC, solder-bonded Si die | Lower average current rating; requires reflow soldering instead of pressure contact | Select when PCB-mount integration and lower cost outweigh field-serviceability needs. |
| DD162N18KHP | 1800 V VRRM, 162 A IFAVM, identical press-pack construction and AlN insulation | 10% lower IFAVM; otherwise pin- and footprint-compatible | Use where derated current capacity is acceptable and legacy inventory alignment is required. |
Compared with SKKD 162/18 and DD162N18KHP, DD171N18KHPSA2 delivers higher continuous current (171 A vs. 162 A) and lower thermal resistance (0.126 vs. 0.145 °C/W), enabling tighter thermal margins in space-constrained traction and UPS designs.
Availability
DD171N18KHPSA2 is available at Aetrix Electronics and suitable for industrial UPS systems, traction motor drives, medium-voltage variable frequency drives, and grid-scale energy storage rectifiers requiring stable component supply and long-term lifecycle support.
Supply support for DD171N18KHPSA2 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 since 1951.
This part belongs to Semikron's DD-series press-pack rectifier modules, engineered for maximum thermal performance and service life in mission-critical high-power AC/DC conversion systems.
FAQ
What is the maximum junction temperature for DD171N18KHPSA2?
The maximum junction temperature (Tvj max) is 150 °C, as specified in the datasheet's thermal properties table. This limit applies under all operating conditions including surge events and defines the upper boundary for thermal modeling and heatsink design.
Does DD171N18KHPSA2 require thermal compound between baseplate and heatsink?
No thermal compound is required or recommended. The module uses direct pressure contact between its copper baseplate and the heatsink surface; proper mounting torque (6 Nm ±15% for M1 screws) ensures optimal thermal transfer without interstitial material.
Can DD171N18KHPSA2 be used in parallel configurations?
Yes - its matched dual-arm structure and symmetric thermal design support parallel operation when paired with current-sharing reactors and balanced busbar layout. Derating by 10–15% per module is advised to account for parameter spread and thermal coupling.
What is the isolation voltage rating between terminals and baseplate?
The insulation test voltage is 2.5 kV RMS at 50 Hz for 1 minute between case and terminals, confirming compliance with reinforced insulation requirements for industrial equipment operating up to 1000 VAC systems.
DD171N18KHPSA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- DD171N
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io) (per Diode):
- 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
- Operating Temperature - Junction:
- 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
DD171N18KHPSA2 FAQ
1.How can I place an order for DD171N18KHPSA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for DD171N18KHPSA2 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 DD171N18KHPSA2 reliable?
The price and inventory of DD171N18KHPSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DD171N18KHPSA2 is usually 5 days.
3.What payment methods are accepted for DD171N18KHPSA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DD171N18KHPSA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DD171N18KHPSA2?
DD171N18KHPSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DD171N18KHPSA2 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 DD171N18KHPSA2?
For technical support, including DD171N18KHPSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DD171N18KHPSA2 requirements.
6.How does Aetrix verify that DD171N18KHPSA2 is sourced from the original manufacturer or authorized distributors?
All DD171N18KHPSA2 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 DD171N18KHPSA2 meets industry standards.
7.What is the process for return or replacement of DD171N18KHPSA2?
All DD171N18KHPSA2 units undergo pre-shipment inspection (PSI). If there is an issue with DD171N18KHPSA2, 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 DD171N18KHPSA2 part is unused and in its original packaging.
Return procedure for DD171N18KHPSA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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