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

Infineon Technologies D1331SH45TXPSA1

Name: D1331SH45TXPSA1
Brand: Infineon Technologies
SKU: D1331SH45TXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: D1331SH45TXPSA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: DO-200AE

Datasheet:: D1331SH45TXPSA1.pdf

Description:: DIODE GEN PURP 4.5KV 1710A

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Product details

Overview

D1331SH45TXPSA1 from Infineon Technologies is a press-pack, stud-mounted, fast-recovery high-voltage diode designed for medium-voltage converter freewheeling and snubber applications. It delivers V_RRM = 4500 V, I_FAVM = 1310 A (T_C = 85 °C), I_FSM = 28 kA, r_T = 0.948 mΩ, and soft reverse recovery (FRRS = 1.6) in a 121 mm diameter, dual-sided cooled package with 36–52 kN clamping force.

For engineers reviewing the D1331SH45TXPSA1 datasheet, D1331SH45TXPSA1 pinout, D1331SH45TXPSA1 application, or D1331SH45TXPSA1 equivalent, key selection criteria include its 4.2 V max forward voltage at 2500 A, 3.5 mAs max recovered charge under 1000 A/µs di/dt, 140 °C max junction temperature, and two-sided thermal resistance of 7.5 K/kW - all critical for IGCT/IGBT snubber and pulsed-power freewheeling designs.

Technical Context

This diode employs a silicon pressure-contact pellet structure with no bond wires or solder layers, enabling ultra-high surge current capability and robust thermal cycling performance. Its soft reverse recovery behavior (FRRS = 1.6) and low stored charge (Q_r ≤ 3.5 mAs) minimize voltage overshoot during forced commutation in high-di/dt circuits.

The device operates with dual-sided cooling via anode and cathode contact surfaces, achieving R_thJC = 7.5 K/kW under DC conditions. Its transient thermal impedance model includes seven RC network elements, supporting accurate junction temperature prediction in pulsed-power duty cycles up to 10 s.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	4500 V - Withstands repetitive 50/60 Hz reverse voltage up to 4.5 kV without breakdown.
I_FAVM	1310 A @ T_C = 85 °C - Continuous average forward current rating under standard heatsink conditions.
I_FSM	28000 A @ t_P = 10 ms - Peak non-repetitive surge current handling for short-circuit protection.
r_T	0.948 mΩ - Slope resistance defining linear on-state voltage drop above threshold (v_F = V_T0 + r_T·i_F).
FRRS	1.6 - Reverse recovery softness factor quantifying gradual current decay to limit dv/dt stress on switching devices.
R_thJC	7.5 K/kW - Thermal resistance from junction to case under two-sided DC cooling, enabling precise thermal design.
Q_r	3.5 mAs - Recovered charge during turn-off, directly impacting snubber loss and voltage overshoot in clamp circuits.

Pinout & Package

Package: Press-pack, double-sided cooled, stud-mounted diode with isolated anode and cathode terminals. Diameter: 121 mm; contact diameter: 86 mm; height: 26 mm; clamping force range: 36–52 kN.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Stud)	Forward current entry point	Mechanically robust threaded stud serving as both electrical terminal and thermal interface to heatsink.
Cathode (Stud)	Forward current exit point	Second threaded stud providing symmetrical thermal path and enabling dual-sided cooling configuration.

Key Features

Feature	Design Value
Soft turn-off behavior	FRRS = 1.6 ensures controlled reverse recovery current decay, reducing EMI and voltage spikes in high-di/dt converters.
High DC blocking stability	VR(D) = 2800 V continuous reverse voltage rating supports stable operation under long-term DC bias in HVDC links.
Pressure-contact Si pellet	Eliminates wire bonds and solder interfaces, delivering superior reliability under thermal cycling and mechanical shock.
Two-sided thermal path	R_thJC = 7.5 K/kW enables balanced heat extraction from both anode and cathode, improving power density vs. single-sided packages.

Applications

Medium-Voltage Converters

IGCT Freewheeling

Use Scenario: Grid-connected medium-voltage drives operating at 3.3–6.6 kV AC output.

IC Role / Device Role / Timing Role: Freewheeling diode in three-level NPC or cascaded H-bridge topologies.

Use Value: 4500 V V_RRM and 28 kA I_FSM ensure safe energy recirculation during IGBT/IGCT turn-off transients.

Use Scenario: Forced-commutated gate-turn-off thyristor (IGCT) inverters in traction and industrial motor drives.

IC Role / Device Role / Timing Role: Snubber diode absorbing turn-off energy from IGCTs during active clamping.

Use Value: Soft recovery (FRRS = 1.6) and low Q_r (≤3.5 mAs) suppress voltage overshoot when di/dt exceeds 1000 A/µs.

IGBT Freewheeling

Pulsed Power Systems

Use Scenario: High-power UPS and welding inverters using 1.7–3.3 kV IGBT modules.

IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode in half-bridge legs handling >1000 A RMS currents.

Use Value: 1310 A I_FAVM at 85 °C and 7.5 K/kW R_thJC support sustained conduction with minimal thermal derating.

Use Scenario: Capacitor discharge units in electromagnetic launchers and laser pulse modulators.

IC Role / Device Role / Timing Role: Main discharge path switch in high-current, short-duration (<10 ms) pulse circuits.

Use Value: 28 kA I_FSM and 3920×10³ A²s I²t rating enable reliable operation under extreme pulsed loads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage, high-current freewheeling diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IXYS MDD1300-45	V_RRM = 4500 V, I_FAVM = 1300 A, but uses solder-bonded die and single-sided cooling (R_thJC = 11.5 K/kW).	Limited to lower di/dt and thermal cycling endurance due to metallurgical interconnects.	Prefer for cost-sensitive, lower-reliability industrial drives where dual-sided cooling is unavailable.
Powerex CM1300HA-45H	V_RRM = 4500 V, I_FAVM = 1300 A, but features faster recovery (t_rr < 2 µs vs. ~3.5 µs) and higher FRRS (≥2.0).	Better suited for very high-frequency snubbing but exhibits higher forward voltage (v_F = 4.5 V @ 2500 A).	Choose when minimizing reverse recovery time outweighs forward conduction loss in resonant topologies.

Compared with MDD1300-45 and CM1300HA-45H, D1331SH45TXPSA1 offers superior thermal management via dual-sided cooling and enhanced mechanical robustness through pressure-contact construction - making it optimal for mission-critical medium-voltage converters requiring long service life under thermal stress.

Availability

D1331SH45TXPSA1 is available at Aetrix Electronics and suitable for medium-voltage converters, IGCT freewheeling circuits, and pulsed power systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from original manufacturer stock.

Supply support for D1331SH45TXPSA1 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, microcontrollers, and security solutions, with global R&D and manufacturing infrastructure.

This part belongs to Infineon's "Fast Hard Drive Diode" product line, engineered specifically for high-reliability, high-current freewheeling and snubbing in medium-voltage industrial and traction converters.

FAQ

What is the maximum clamping force required for proper thermal contact?

The D1331SH45TXPSA1 requires a mechanical clamping force between 36 kN and 52 kN to ensure optimal thermal interface resistance between the anode/cathode surfaces and the heatsink. Exceeding 52 kN risks damaging the internal pressure-contact structure, while forces below 36 kN increase R_thCH and risk localized overheating under full load.

Does this diode require a heatsink on both sides?

Yes - the device is explicitly rated for two-sided cooling, with R_thJC = 7.5 K/kW specified only under dual-sided thermal contact. Using single-sided cooling degrades thermal resistance to ≥13.3 K/kW (anode-side) or ≥17.2 K/kW (cathode-side), requiring significant current derating and risking junction temperature exceedance above 125 °C.

Can D1331SH45TXPSA1 be used in 60 Hz rectifier bridges?

Yes - its full 50/60 Hz blocking capability over –40 °C to +140 °C junction temperature range, combined with 4500 V V_RRM and 1310 A I_FAVM, makes it suitable for line-frequency medium-voltage rectification. However, its soft recovery profile is optimized for forced-commutated converters, not passive rectifiers where faster recovery may reduce losses.

What is the significance of the "XPSA1" suffix in the part number?

The "XPSA1" suffix denotes Infineon's internal revision and packaging variant: "XP" indicates extended performance grade, "SA" specifies the standard anode/cathode stud configuration with 121 mm diameter and 26 mm height, and "1" identifies the first release of this mechanical variant per the D1331SH family. It does not indicate RoHS or halogen-free status.

D1331SH45TXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: DO-200AE

Packaging:: Tray

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 4500 V

Current - Average Rectified (Io):: 1710A

Voltage - Forward (Vf) (Max) @ If:: 4.2 V @ 2500 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 150 mA @ 4500 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

Supplier Device Package:: -

Operating Temperature - Junction:: 0°C ~ 140°C

D1331SH45TXPSA1 FAQ

1.How can I place an order for D1331SH45TXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for D1331SH45TXPSA1 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 D1331SH45TXPSA1 reliable?

The price and inventory of D1331SH45TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D1331SH45TXPSA1 is usually 5 days.

3.What payment methods are accepted for D1331SH45TXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D1331SH45TXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for D1331SH45TXPSA1?

D1331SH45TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your D1331SH45TXPSA1 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 D1331SH45TXPSA1?

For technical support, including D1331SH45TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D1331SH45TXPSA1 requirements.

6.How does Aetrix verify that D1331SH45TXPSA1 is sourced from the original manufacturer or authorized distributors?

All D1331SH45TXPSA1 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 D1331SH45TXPSA1 meets industry standards.

7.What is the process for return or replacement of D1331SH45TXPSA1?

All D1331SH45TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D1331SH45TXPSA1, 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 D1331SH45TXPSA1 part is unused and in its original packaging.

Return procedure for D1331SH45TXPSA1:

1.Submit a request within 90 days.

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

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