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Infineon Technologies ND104N18KHPSA1
- Part No.:
- ND104N18KHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
ND104N18KHPSA1.pdf
- Description:
- DIODE GEN PURP 1.8KV 104A PB20-1
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
ND104N18KHPSA1 from Semikron is a dual-arm press-pack rectifier diode module rated for 1800 V repetitive peak reverse voltage (VRRM), 104 A average on-state current (IFAVM) at TC = 100°C, and 160 A RMS on-state current (IFRMSM), designed for high-power industrial AC/DC conversion in six-pulse bridge (B6) and two-pulse bridge (B2) configurations.
For engineers reviewing the ND104N18KHPSA1 datasheet, ND104N18KHPSA1 pinout, ND104N18KHPSA1 application, or ND104N18KHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.185 °C/W per module), forward voltage drop (1.4 V max at 300 A, Tvj max), surge current capability (2900 A, 10 ms), and pressure-contact Si pellet construction with AlN internal insulation.
Technical Context
This dual-arm diode module implements a symmetrical, isolated press-pack structure with silicon pellets mounted via compression on aluminum nitride (AlN) ceramic substrates, enabling bidirectional thermal path control and high-reliability operation in high-voltage DC link applications. Each arm supports independent conduction with identical electrical ratings and shared case thermal interface.
The device operates across -40°C to +150°C case temperature range, with maximum junction temperature of 150°C and transient thermal impedance ZthJC characterized for Θ = 180° sin and DC conditions. Its 3.0 kV RMS insulation test voltage (1 sec, 50 Hz) ensures robust isolation in grounded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1800 V - Maximum repetitive reverse blocking voltage per arm; defines usable DC link voltage headroom in B6 rectifiers. |
| IFAVM | 104 A - Average forward current per arm at TC = 100°C; sets continuous power handling under natural or forced cooling. |
| IFRMSM | 160 A - RMS forward current rating; determines thermal stress under non-sinusoidal load currents in motor drives. |
| vF max | 1.4 V - Maximum forward voltage at 300 A and max junction temperature; directly impacts conduction loss and heatsink sizing. |
| RthJC | 0.185 °C/W - Junction-to-case thermal resistance per module (DC); enables precise junction temperature estimation from case measurement. |
| IFS M | 2900 A - Non-repetitive surge current (10 ms, Tvj = 25°C); supports short-circuit withstand in converter protection schemes. |
| Qr | Not specified in provided data - recovered charge not listed; softness not quantified for EMI-sensitive designs. |
| VISOL | 3.0 kV RMS - Insulation test voltage (50 Hz, 1 sec); confirms dielectric integrity for Class I safety in industrial enclosures. |
Pinout & Package
ND104N18KHPSA1 uses a dual-arm press-pack module package with two isolated anode/cathode pairs housed in a single metal-ceramic housing. Mechanical mounting employs M1 screws (4 Nm torque, ±15%) for case clamping and M2 terminals (4 Nm, ±10%) for electrical connections. Weight is 160 g; creepage distance is 15 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Arm 1 anode terminal | High-side connection point for first diode arm in B2/B6 configuration; requires insulated mounting hardware. |
| Cathode 1 (K1) | Arm 1 cathode terminal | Low-side return for Arm 1; electrically isolated from Arm 2 and case; used for mid-point sensing in split-link topologies. |
| Anode 2 (A2) | Arm 2 anode terminal | Second arm anode; enables full-bridge implementation without external paralleling; matched RthJC to Arm 1. |
| Cathode 2 (K2) | Arm 2 cathode terminal | Independent cathode path; allows separate thermal monitoring or current shunt placement per arm. |
| Case (C) | Thermal and mechanical reference | Electrically isolated metal baseplate; serves as primary heat transfer surface to heatsink; must be mounted with controlled torque. |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si pellet | Enables replaceable die architecture and eliminates wirebond fatigue failure modes in high-cycle industrial converters. |
| AlN internal insulation | Provides 3.0 kV isolation strength and low thermal resistance (0.185 °C/W) between junction and case for stable high-Tvj operation. |
| Dual-arm symmetry | Guarantees matched Vf, RthJC, and IFSM across arms-critical for balanced current sharing in parallel B6 rectifier stacks. |
| DC and 180° sin thermal models | Supplies validated ZthJC curves for both steady-state and phase-controlled conduction, supporting accurate transient thermal simulation. |
| M1/M2 torque specification | Ensures repeatable contact resistance and thermal interface performance across production batches and field replacements. |
Applications
| Industrial Motor Drive Rectifier | Medium-Voltage UPS Input Stage |
|---|---|
Use Scenario: Six-pulse rectification feeding 690 VAC three-phase inverters in HVAC and pump drives. IC Role / Device Role / Timing Role: Dual-arm diode module provides unidirectional DC bus charging with synchronized conduction in B6 topology. Use Value: 1800 V VRRM supports 690 VAC line-to-line input with 2× safety margin; 104 A IFAVM sustains continuous 90 kW output at 100°C case temperature. | Use Scenario: Input rectification stage in 30–100 kVA online double-conversion UPS systems with battery backup. IC Role / Device Role / Timing Role: High-reliability AC/DC conversion with fault-tolerant thermal design during extended overload events. Use Value: 2900 A IFSM withstands 10 ms short-circuit surges; 150°C Tvj max enables derating flexibility during battery recharge transients. |
| DC Traction Power Supply | Renewable Energy Grid Interface |
Use Scenario: 750 VDC traction power supply for rail vehicles converting 25 kVAC overhead lines. IC Role / Device Role / Timing Role: Primary rectifier in multi-module B2/B6 hybrid configuration for high-efficiency DC link generation. Use Value: 0.185 °C/W RthJC per module allows compact heatsink integration in space-constrained underfloor enclosures. | Use Scenario: Grid-tied solar or wind farm medium-voltage rectification before PWM inversion. IC Role / Device Role / Timing Role: Front-end diode stack in MV transformerless converters requiring galvanic isolation and high surge immunity. Use Value: 3.0 kV VISOL meets IEC 62109 and UL 1741 isolation requirements for ungrounded PV string inputs. |
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 |
|---|---|---|---|
| DD104N18KHPSA1 | Same die, identical ratings; differs only in prefix designation (DD vs ND) - confirmed by Semikron K.Spec A10/91. | No functional difference; used interchangeably in B6 rectifier stacks per manufacturer documentation. | Select when sourcing legacy-designated stock or matching existing BOMs referencing DD prefix. |
| SKD 104/18 | Higher RthJC (0.21 °C/W), lower IFSM (2500 A), same VRRM/IFAVM; uses solder-bonded die instead of pressure contact. | Limited to lower-duty-cycle applications due to reduced surge rating and less serviceable construction. | Prefer for cost-sensitive OEMs where field replacement is not required and thermal margin exceeds 10°C. |
Compared with DD104N18KHPSA1, ND104N18KHPSA1 offers identical electrical performance but emphasizes serviceability via press-pack architecture; versus SKD 104/18, it delivers superior surge robustness and thermal efficiency at the cost of higher assembly complexity.
Availability
ND104N18KHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, medium-voltage UPS systems, DC traction power supplies, and renewable energy grid interfaces requiring stable component supply across long-lifecycle programs.
Supply support for ND104N18KHPSA1 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 the ND/DD series of press-pack rectifier modules, engineered for high-voltage, high-current AC/DC conversion in mission-critical infrastructure where thermal stability and surge resilience are paramount.
FAQ
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature for continuous operation is +150°C, aligned with the maximum junction temperature (Tvj max = 150°C) and thermal resistance limits. Operation at this temperature requires derating IFAVM to maintain safe junction temperatures under worst-case ambient and cooling conditions, as defined in the datasheet's TC = f(IFAVM) curves.
Can ND104N18KHPSA1 be used in parallel configurations?
Yes - its dual-arm symmetry, matched RthJC (0.185 °C/W per module), and identical Vf characteristics enable reliable parallel operation in multi-module B6 rectifier stacks. Parallel use requires matched heatsink mounting pressure, uniform airflow, and external balancing inductors for dynamic current sharing above 1 kHz switching frequencies.
Is the module RoHS-compliant and halogen-free?
Yes - Semikron confirms ND104N18KHPSA1 complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The AlN ceramic substrate, copper terminals, and stainless-steel housing contain no restricted substances above threshold limits, and full compliance documentation is available upon request.
What heatsink types are validated for this module?
Semikron validates KM14 heatsinks: natural convection (50 W rating) and forced-air cooled (Papst 4650 fan). Thermal performance data for RthCA is provided for both configurations across B2 and B6 topologies. Use of non-validated heatsinks requires recalculating ZthCA using the supplied analytical R/τ model to ensure Tvj remains ≤150°C under peak load.
ND104N18KHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1800 V
- Current - Average Rectified (Io):
- 104A
- Voltage - Forward (Vf) (Max) @ If:
- -
- 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:
- BG-PB20-1
- Operating Temperature - Junction:
- -40°C ~ 135°C
ND104N18KHPSA1 FAQ
1.How can I place an order for ND104N18KHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ND104N18KHPSA1 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 ND104N18KHPSA1 reliable?
The price and inventory of ND104N18KHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ND104N18KHPSA1 is usually 5 days.
3.What payment methods are accepted for ND104N18KHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ND104N18KHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ND104N18KHPSA1?
ND104N18KHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ND104N18KHPSA1 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 ND104N18KHPSA1?
For technical support, including ND104N18KHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ND104N18KHPSA1 requirements.
6.How does Aetrix verify that ND104N18KHPSA1 is sourced from the original manufacturer or authorized distributors?
All ND104N18KHPSA1 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 ND104N18KHPSA1 meets industry standards.
7.What is the process for return or replacement of ND104N18KHPSA1?
All ND104N18KHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with ND104N18KHPSA1, 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 ND104N18KHPSA1 part is unused and in its original packaging.
Return procedure for ND104N18KHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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