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

Infineon Technologies D1481N58T

Name: D1481N58T
Brand: Infineon Technologies
SKU: D1481N58T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: D1481N58T

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: DO-200AC, K-PUK

Datasheet:: D1481N58T.pdf

Description:: DIODE GEN PURP 5.8KV 2200A

Quantity:: RFQ Add To RFQ list

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Inventory:3,008

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Product details

Overview

D1481N58T from Infineon Technologies is a high-power, hermetically sealed ceramic-packaged press-pack rectifier diode designed for medium-voltage industrial drive and pulsed-power systems. It delivers 1590 A average forward current (TC = 100 °C), 6800 V repetitive peak reverse voltage, and 28 kA surge current capability with 0.75 V threshold voltage and 0.42 mΩ slope resistance.

For engineers reviewing the D1481N58T datasheet, D1481N58T pinout, D1481N58T application, or D1481N58T equivalent, this device is selected for high-reliability, high-current DC link rectification where thermal stability, surge robustness, and long-term blocking integrity under 50/60 Hz AC line conditions are critical.

Technical Context

This diode employs a silicon pellet with double-sided pressure contact architecture, enabling bidirectional heat extraction and stable junction temperature up to 160 °C. Its low R_thJC of 14 K/kW (two-sided cooling) and 0.39–0.42 mΩ dynamic slope resistance support high-efficiency conduction in high-current DC bus applications.

The device exhibits full 50/60 Hz blocking capability across –40 °C to +160 °C ambient and junction temperatures, with verified reverse recovery characteristics: Q_r = 7.2 mAs (typ.) and I_RM = 210 A (typ.) at VR = 100 V, –di/dt = 10 A/µs - confirming suitability for crowbar and medium-voltage converter snubber circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	6800 V - Enables direct use in 6.6 kV-class medium-voltage drives without series stacking.
I_FAVM	1590 A @ TC = 100 °C - Sustains continuous DC output current in high-power rectifier bridges.
I_FSM	28000 A @ t_P = 10 ms - Withstands short-circuit fault currents in motor drive inverters.
V_T0	0.75 V - Low threshold voltage minimizes conduction loss at light-to-moderate loads.
r_T	0.42 mΩ - Linear slope resistance ensures predictable voltage drop scaling with load current.
R_thJC	14 K/kW (two-sided) - Enables efficient thermal coupling to liquid-cooled heatsinks in compact power modules.
Q_r	7.2 mAs (typ., VR = 100 V) - Low recovered charge reduces switching losses and EMI in forced-commutated converters.
Clamping Force	15–36 kN - Required mechanical preload ensures stable contact resistance and thermal interface over lifetime.

Pinout & Package

Hermetically sealed ceramic press-pack package with two external terminals: anode (terminal 1) and cathode (terminal 2), designed for bolt-down mounting with controlled clamping force. No internal bonding wires; conduction and heat transfer occur via direct silicon-to-metal pressure contact on both sides.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	Forward current entry point	High-current input terminal; must be mounted to heatsink with specified clamping force (15–36 kN) for thermal and electrical integrity.
2 (Cathode)	Forward current exit point	High-current return terminal; symmetrically engineered for bidirectional cooling and equal current sharing in parallel configurations.

Key Features

Feature	Design Value
Hermetic ceramic enclosure	Prevents moisture ingress and contamination, ensuring long-term reliability in harsh industrial environments (e.g., steel mills, traction substations).
Full 50/60 Hz blocking stability	Maintains rated V_RRM across –40 °C to +160 °C, eliminating derating concerns in variable-temperature drive cabinets.
High case non-rupture current	Withstands >24.5 kA surge at max junction temperature without mechanical failure - critical for crowbar protection circuits.
Two-sided thermal path	Enables dual-surface heatsinking, reducing effective R_thJC by ~12% vs. single-sided mounting and supporting higher power density layouts.
DC blocking stability	Guarantees <50 mA leakage at V_RRM and T_vj = 160 °C - essential for energy storage and HVDC link hold-off.

Applications

Drive Rectifier Bridge

Medium-Voltage Converter

Use Scenario: Three-phase AC-to-DC conversion in 3.3–6.6 kV industrial motor drives.

IC Role / Device Role / Timing Role: Main power diode in uncontrolled rectifier bridge supplying DC link to inverter stage.

Use Value: 6800 V V_RRM and 1590 A I_FAVM allow single-device operation per leg, minimizing component count and thermal mismatch.

Use Scenario: Grid-tied renewable energy converters (e.g., wind turbine back-to-back converters).

IC Role / Device Role / Timing Role: High-current freewheeling and rectification element in multi-level NPC or CHB topologies.

Use Value: Low r_T (0.42 mΩ) and high I_FSM (28 kA) ensure low conduction loss and fault ride-through during grid faults.

Pulsed Power Supply

Crowbar Protection

Use Scenario: High-energy capacitor charging and discharge circuits in medical imaging (CT/X-ray) and laser systems.

IC Role / Device Role / Timing Role: Unidirectional switch enabling controlled energy transfer into storage capacitors.

Use Value: 28 kA I_FSM and 3920×10³ A²s I²t rating support repeated high-peak pulse operation without degradation.

Use Scenario: Overvoltage protection in high-power UPS and HVDC systems using fast-acting short-circuit activation.

IC Role / Device Role / Timing Role: Crowbar switch that latches short-circuit across DC bus during overvoltage events.

Use Value: Hermetic ceramic housing prevents arc-induced failure; high case non-rupture current ensures mechanical survival during crowbar activation.

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
DD900N16K	1600 V V_RRM, 900 A I_FAVM, TO-247 package - lower voltage/current rating, not press-pack.	Designed for 1.2 kV industrial SMPS, not medium-voltage drives or crowbar circuits.	Select only for lower-power, PCB-mount applications requiring standard packaging.
SKKH 105/16 E	1600 V V_RRM, 105 A I_FAVM, module-integrated thyristor/diode - includes gate control, not passive rectification.	Used in phase-controlled rectifiers and soft-start circuits, not uncontrolled high-current DC links.	Choose when active phase-angle control is required; not a drop-in replacement for D1481N58T's passive, high-power role.

Compared with DD900N16K and SKKH 105/16 E, D1481N58T uniquely supports 6.8 kV blocking and 1.6 kA continuous current in a press-pack format - making it irreplaceable in medium-voltage drive rectifiers and crowbar systems where voltage, current, and mechanical robustness converge.

Availability

D1481N58T is available at Aetrix Electronics and suitable for medium-voltage drive rectifiers, pulsed power supplies, crowbar protection circuits, and industrial converter systems requiring stable component supply under high thermal and mechanical stress.

Supply support for D1481N58T 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 is a German semiconductor manufacturer specializing in power semiconductors, automotive ICs, and security solutions, with global manufacturing and R&D infrastructure.

D1481N58T belongs to Infineon's high-power press-pack diode product line, engineered specifically for reliability-critical, high-current industrial power conversion where hermetic sealing, thermal resilience, and surge immunity are mandatory.

FAQ

What is the maximum clamping force required for D1481N58T installation?

The device requires a controlled mechanical clamping force between 15 kN and 36 kN to ensure optimal thermal contact, low contact resistance, and long-term reliability. Exceeding 36 kN risks ceramic housing fracture; below 15 kN increases thermal resistance and risk of hot-spot formation at the silicon/metal interface.

Does D1481N58T support two-sided cooling, and how does it affect thermal performance?

Yes - D1481N58T is explicitly designed for two-sided cooling, achieving R_thJC = 14 K/kW under DC conditions. This configuration reduces junction-to-heatsink thermal resistance by approximately 12% compared to single-sided mounting and enables balanced thermal expansion, critical for paralleling multiple devices in high-power stacks.

What is the significance of the 7.2 mAs typical recovered charge (Q_r) value?

The 7.2 mAs Q_r (measured at VR = 100 V, Tvj = 160 °C) reflects low stored minority-carrier charge, resulting in reduced reverse recovery losses and lower EMI generation during commutation. This enables cleaner switching behavior in medium-voltage converters operating at moderate di/dt rates (≤10 A/µs).

Can D1481N58T be used in parallel configurations, and what design considerations apply?

Yes - its symmetrical two-terminal structure, matched thermal impedance, and low r_T tolerance support parallel operation. Critical requirements include matched clamping force per device, identical heatsink surface flatness (<5 µm deviation), and current-sharing inductors or busbar symmetry to minimize dynamic current imbalance during transients.

D1481N58T Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: DO-200AC, K-PUK

Packaging:: Bulk

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 5800 V

Current - Average Rectified (Io):: 2200A

Voltage - Forward (Vf) (Max) @ If:: 1.8 V @ 2500 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 50 mA @ 5800 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Clamp On

Supplier Device Package:: -

Operating Temperature - Junction:: -40°C ~ 160°C

D1481N58T FAQ

1.How can I place an order for D1481N58T through Aetrix?

Please submit a Request for Quotation (RFQ) for D1481N58T 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 D1481N58T reliable?

The price and inventory of D1481N58T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D1481N58T is usually 5 days.

3.What payment methods are accepted for D1481N58T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D1481N58T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for D1481N58T?

D1481N58T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your D1481N58T 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 D1481N58T?

For technical support, including D1481N58T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D1481N58T requirements.

6.How does Aetrix verify that D1481N58T is sourced from the original manufacturer or authorized distributors?

All D1481N58T 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 D1481N58T meets industry standards.

7.What is the process for return or replacement of D1481N58T?

All D1481N58T units undergo pre-shipment inspection (PSI). If there is an issue with D1481N58T, 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 D1481N58T part is unused and in its original packaging.

Return procedure for D1481N58T:

1.Submit a request within 90 days.

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

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