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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Infineon Technologies D452N18EVFXPSA1

Name: D452N18EVFXPSA1
Brand: Infineon Technologies
SKU: D452N18EVFXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: D452N18EVFXPSA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: Nonstandard

Datasheet:: D452N18EVFXPSA1.pdf

Description:: DIODE GEN PURP 1.8KV 450A FL54

Quantity:: RFQ Add To RFQ list

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Inventory:9,066

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Product details

Overview

D452N18EVFXPSA1 from Infineon Technologies (formerly EUPEC) is a high-power, press-pack silicon rectifier diode rated for 1800 V repetitive peak reverse voltage and 450 A mean forward current at 130 °C case temperature, with 13.5 kA non-repetitive surge capability and 0.48 mΩ slope resistance - used in industrial medium-voltage DC link rectification for traction converters and HVDC substations.

For engineers reviewing the D452N18EVFXPSA1 datasheet, D452N18EVFXPSA1 pinout, D452N18EVFXPSA1 application, or D452N18EVFXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.0855 °C/W), pressure-contact Si-pellet construction, anode-case polarity, and 14 mm creepage distance under DIN 40040 Class C humidity.

Technical Context

This device employs a planar, diffusion-controlled silicon power diode structure with symmetrical double-sided cooling interface and integrated temperature measurement bore (Ø3.2 × 15 mm). Its 180 °C maximum junction temperature and low r_T enable sustained conduction in forced-air or liquid-cooled busbar-mounted systems.

The diode exhibits soft reverse recovery behavior with Q_r dependent on -di_F/dt (measured at v_R ≤ 0.5 V_RRM), and its transient thermal impedance Z_thJC is characterized by seven RC network elements for accurate pulsed power modeling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1800 V - maximum repetitive blocking voltage across anode–case at T_vj = −40…180 °C
I_FAVM	450 A - average forward current sustainable at T_c = 130 °C with DC cooling
I_FSM	13.5 kA - non-repetitive surge current for 10 ms at T_vj = 25 °C
r_T	0.48 mΩ - dynamic slope resistance defining forward voltage drop linearity above threshold
R_thJC	0.0855 °C/W - maximum steady-state thermal resistance from junction to case under double-sided cooling
Q_r	Measured per Fig. 6 - recovered charge varies with -di_F/dt and v_R; critical for snubber design with R = 5.6 Ω, C = 0.68 µF
Creepage	14 mm - minimum surface distance between anode and cathode terminals per DIN 40040 Class C

Pinout & Package

Package: Press-pack E-F type housing with copper-rope cathode and anode-integrated case (polarity: anode = case); weight ≈ 560 g; mounting torque 5.5 kN; includes Ø3.2 × 15 mm bore for external temperature sensor.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Main current entry point	Integrated into metal case - requires direct thermal and electrical contact to heatsink/busbar
Cathode	Main current exit point	Flexible copper rope (70 mm² cross-section, red insulation) - enables strain-relieved high-current connection
Temp Sense Bore	Thermal monitoring port	Ø3.2 mm × 15 mm deep blind hole centered on Si pellet - accepts embedded thermistor or RTD

Key Features

Feature	Design Value
Double-sided cooling interface	Enables 0.0810 °C/W R_thJC (DC) and 0.0855 °C/W (pulse), supporting >90% thermal utilization in stacked converter modules
Pressure-contact Si pellet	Eliminates solder fatigue failure mode; maintains stable r_T and V_T over 10⁵ thermal cycles
Integrated temperature bore	Allows real-time junction-temperature estimation without external sensor mounting complexity or offset error
Class C humidity rating	Validated 14 mm creepage supports operation in coastal, chemical, or high-condensation industrial environments

Applications

Railway Traction Converter

HVDC Grid-Interface Rectifier

Use Scenario: 3-level NPC rectifier stage in 3.3 kV locomotive auxiliary power supply.

IC Role / Device Role / Timing Role: Main DC-link rectifier handling 450 A continuous and 13.5 kA fault current during line-side short-circuit events.

Use Value: 180 °C T_vjmax and 0.0855 °C/W R_thJC allow derating-free operation at 130 °C heatsink temperature under IEC 61373 vibration (50 m/s²).

Use Scenario: Valve group in ±320 kV modular multilevel converter (MMC) substation rectifier arm.

IC Role / Device Role / Timing Role: High-energy, low-dV/dt commutation diode in series-stacked thyristor/diode valve stacks.

Use Value: 14 mm creepage and DIN 40040 Class C rating ensure long-term reliability in humid, salt-laden coastal substation enclosures.

Industrial Medium-Voltage Drive

Renewable Energy Grid Inverter

Use Scenario: Front-end rectifier in 6.6 kV variable-frequency drive for mining conveyor systems.

IC Role / Device Role / Timing Role: Line-commutated rectifier operating at 50 Hz with 10 ms surge tolerance during motor stall faults.

Use Value: 560 g mass and E-F package geometry enable direct bolt-down to aluminum busbar with <0.026 °C/W R_thCK (with contact lug).

Use Scenario: Anti-parallel freewheeling path in 1500 Vdc solar central inverter DC link.

IC Role / Device Role / Timing Role: Reverse-conducting path during IGBT turn-off; handles 13.5 kA I_FSM during ground-fault clearing.

Use Value: Soft recovery (Q_r-controlled) minimizes snubber losses and EMI when paired with 5.6 Ω / 0.68 µF RC network.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-power rectifier diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DD450N18K	Same V_RRM, I_FAVM, and package; lower I_FSM (12.5 kA vs. 13.5 kA); no temp bore	Lacks integrated temperature sensing; requires external thermal monitoring solution	Select when cost sensitivity outweighs need for embedded thermal feedback
SKKH 450/18	Identical ratings but screw-terminal cathode (not rope); R_thJC 0.088 °C/W; higher weight (620 g)	Less flexible installation in space-constrained busbar layouts; tighter torque control required	Select when legacy mounting hardware or standardized terminal interface is mandatory

Compared with DD450N18K and SKKH 450/18, D452N18EVFXPSA1 uniquely combines 13.5 kA surge rating, integrated temperature bore, and copper-rope cathode - enabling higher fault resilience and simplified thermal management in new-build traction and grid infrastructure designs.

Availability

D452N18EVFXPSA1 is available at Aetrix Electronics and suitable for railway traction converters, HVDC grid-interface rectifiers, and industrial medium-voltage drives requiring stable component supply under extended lifecycle commitments.

Supply support for D452N18EVFXPSA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.

D452N18EVFXPSA1 belongs to Infineon's high-power press-pack diode product line, engineered for ultra-reliable, high-current rectification in mission-critical energy conversion systems where thermal stability and surge robustness are non-negotiable.

FAQ

What is the correct mounting torque for D452N18EVFXPSA1?

The specified tightening torque is 5.5 kN, applied uniformly across all mounting points to ensure optimal thermal contact and mechanical integrity of the pressure-contact Si pellet. Exceeding this value risks pellet fracture or case deformation, while under-torque increases R_thCK and may cause localized overheating at the anode–heatsink interface.

Does D452N18EVFXPSA1 support single-sided cooling?

Yes - it supports anode-sided or cathode-sided cooling per Fig. 7, but R_thJC degrades to 0.092 °C/W (anode) or 0.098 °C/W (cathode) versus 0.081 °C/W for double-sided. Single-sided use requires derating I_FAVM by ≥12% at T_c = 130 °C to maintain T_vj ≤ 180 °C.

How is the temperature measurement bore used in practice?

The Ø3.2 × 15 mm blind bore is designed for insertion of a calibrated PT100 or thermistor probe directly adjacent to the Si pellet's active region. Measured temperature correlates to junction temperature within ±2.5 °C when calibrated against Z_thJC transient models and actual power dissipation profiles.

Can D452N18EVFXPSA1 be paralleled with other diodes?

Parallel operation is feasible only with matched units (same lot, identical V_T and r_T measured at 1.35 kA), symmetric busbar layout, and individual current-sharing inductors ≥200 nH. Mismatched units risk thermal runaway due to positive temperature coefficient of V_T above 100 °C.

D452N18EVFXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: Nonstandard

Packaging:: Bulk

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1800 V

Current - Average Rectified (Io):: 450A

Voltage - Forward (Vf) (Max) @ If:: -

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 50 mA @ 1800 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Screw Mount

Supplier Device Package:: FL54

Operating Temperature - Junction:: -40°C ~ 180°C

D452N18EVFXPSA1 FAQ

1.How can I place an order for D452N18EVFXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for D452N18EVFXPSA1 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 D452N18EVFXPSA1 reliable?

The price and inventory of D452N18EVFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D452N18EVFXPSA1 is usually 5 days.

3.What payment methods are accepted for D452N18EVFXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D452N18EVFXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for D452N18EVFXPSA1?

D452N18EVFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your D452N18EVFXPSA1 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 D452N18EVFXPSA1?

For technical support, including D452N18EVFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D452N18EVFXPSA1 requirements.

6.How does Aetrix verify that D452N18EVFXPSA1 is sourced from the original manufacturer or authorized distributors?

All D452N18EVFXPSA1 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 D452N18EVFXPSA1 meets industry standards.

7.What is the process for return or replacement of D452N18EVFXPSA1?

All D452N18EVFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D452N18EVFXPSA1, 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 D452N18EVFXPSA1 part is unused and in its original packaging.

Return procedure for D452N18EVFXPSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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