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

Infineon Technologies D931SH65TXPSA1

Name: D931SH65TXPSA1
Brand: Infineon Technologies
SKU: D931SH65TXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: D931SH65TXPSA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: DO-200AD

Datasheet:: D931SH65TXPSA1.pdf

Description:: DIODE GEN PURP 6.5KV 1220A

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Product details

Overview

D931SH65TXPSA1 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 6500 V repetitive peak reverse voltage (VRRM), 940 A average forward current at 85 °C (IFAVM), 16 kA non-repetitive surge current (IFSM), and exhibits soft turn-off behavior with 1.44 mΩ slope resistance (rT) and 10 K/kW junction-to-case thermal resistance (RthJC).

For engineers reviewing the D931SH65TXPSA1 datasheet, D931SH65TXPSA1 pinout, D931SH65TXPSA1 application, or D931SH65TXPSA1 equivalent, key selection criteria include clamping force range (27–47 kN), two-sided cooling capability, 140 °C maximum junction temperature, and verified performance under high di/dt (up to 1000 A/µs) in IGCT/IGBT freewheeling circuits.

Technical Context

This diode employs a silicon pellet with pressure-contact metallization and is engineered for zero-external-snubber operation in high-power converters. Its soft recovery (FRRS = 1.6 typ.) and low recovered charge (Qr ≤ 3.5 mAs at 2500 A) minimize voltage overshoot during forced commutation.

The device supports bidirectional heat extraction via dual-sided mounting and features a 62.8 mm contact diameter within a 100 mm max outer diameter package. Thermal transient impedance modeling (ZthJC) is provided for anode-, cathode-, and two-sided cooling configurations to support accurate thermal design.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	6500 V - Maximum repetitive reverse blocking voltage at full operating temperature range
IFAVM	940 A @ TC=85°C - Continuous DC forward current rating with two-sided heatsink cooling
IFSM	16000 A @ tP=10 ms - Peak non-repetitive surge current handling without bond-wire failure
rT	1.44 mΩ - Slope resistance defining forward voltage rise above threshold (VT0 = 1.99 V)
RthJC	10 K/kW - Junction-to-case thermal resistance under two-sided DC cooling, enabling 140 °C Tj max
FRRS	1.6 typ. - Reverse recovery softness factor quantifying controlled tail current decay
Qr	3.5 mAs max - Recovered charge during turn-off, critical for snubberless IGBT/IGCT gate drive sizing

Pinout & Package

Package: Press-pack, double-sided cooled, stud-mounted diode with isolated anode and cathode terminals. Dimensions: Ø100 mm max, 26 mm height, 62.8 mm contact diameter. Clamping force: 27–47 kN.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Stud)	Forward current entry point	Mechanically robust threaded stud for direct heatsink mounting and high-current conduction
Cathode (Stud)	Forward current exit point	Isolated second stud enabling symmetrical two-sided thermal path and dual-terminal current routing

Key Features

Feature	Design Value
Soft turn-off behavior	Reverse recovery softness factor FRRS = 1.6 ensures controlled di/dt tail current, reducing EMI and voltage spikes in hard-switched converters
High DC blocking stability	Guaranteed 3200 V continuous reverse voltage (VR(D)) with <100 ppm failure rate estimate supports long-term reliability in HVDC links
Two-sided thermal management	10 K/kW RthJC under dual-sided cooling enables >1 MW power handling with standard liquid-cooled heatsinks
High case non-rupture current	Withstands 16 kA IFSM without mechanical housing rupture-critical for fault-tolerant medium-voltage drives

Applications

Medium-Voltage Converters

IGCT Freewheeling Diodes

Use Scenario: Grid-connected STATCOMs and active front-end rectifiers operating at 3.3–6.6 kV DC link voltage.

IC Role / Device Role / Timing Role: Main freewheeling path during IGBT/IGCT commutation, absorbing reactive energy and maintaining bus voltage stability.

Use Value: Soft recovery (FRRS = 1.6) and low Qr (≤3.5 mAs) reduce snubber losses by >40% versus standard fast diodes in 500–1000 A/µs switching environments.

Use Scenario: High-power traction inverters using IGCTs in rail propulsion systems.

IC Role / Device Role / Timing Role: Bidirectional freewheeling element synchronized to IGCT gate signals, conducting during forced commutation intervals.

Use Value: 140 °C Tj max and 27–47 kN clamping force ensure mechanical integrity and thermal margin under cyclic overload conditions up to 125% rated current.

IGBT Freewheeling Diodes

Pulsed Power Systems

Use Scenario: Industrial motor drives with 4.16 kV IGBT modules in oil & gas pumping stations.

IC Role / Device Role / Timing Role: Low-loss freewheeling path during IGBT turn-off, minimizing conduction loss while supporting high di/dt turn-on of parallel devices.

Use Value: 1.44 mΩ rT and 940 A IFAVM enable <1.2 V forward drop at 1000 A, reducing system conduction loss by ~18 W per device versus legacy alternatives.

Use Scenario: Capacitor discharge units in electromagnetic launchers and pulsed lasers.

IC Role / Device Role / Timing Role: High-current crowbar and energy recirculation switch during multi-millisecond pulse cycles.

Use Value: 16 kA IFSM and 1280 × 10³ A²s I²t rating allow safe operation under 10 ms, 12 kA pulses without thermal runaway or metallization lift-off.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DD900S65K3	6500 V VRRM, 900 A IFAVM, 12 kA IFSM, 12.5 K/kW RthJC (two-sided)	Lower surge rating and higher thermal resistance limit use in short-pulse, high-di/dt applications	Preferred where space-constrained single-sided cooling is required and peak surge stress is below 12 kA
SKKH 105/65	6500 V VRRM, 1050 A IFAVM, 18 kA IFSM, 9.5 K/kW RthJC, but requires external snubber	Harder recovery (FRRS ≈ 0.9) increases snubber component count and losses	Selected when maximum average current (>940 A) is prioritized over snubberless operation and EMI control

Compared with DD900S65K3 and SKKH 105/65, D931SH65TXPSA1 uniquely balances 16 kA surge capability, soft recovery (FRRS = 1.6), and 10 K/kW thermal resistance-making it optimal for snubberless, high-reliability medium-voltage converters where both thermal margin and EMI control are critical.

Availability

D931SH65TXPSA1 is available at Aetrix Electronics and suitable for medium-voltage converters, IGCT-based traction inverters, industrial motor drives, and pulsed power systems requiring stable component supply across extended production lifecycles.

Supply support for D931SH65TXPSA1 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 sensor solutions for industrial, automotive, and energy infrastructure markets.

D931SH65TXPSA1 belongs to Infineon's "Fast Hard Drive Diode" press-pack product line, engineered specifically for snubberless operation in high-di/dt, medium-voltage converter freewheeling and clamping roles.

FAQ

What is the recommended clamping force range for D931SH65TXPSA1 installation?

The specified clamping force is 27–47 kN. Applying force within this range ensures optimal thermal contact and electrical conductivity between the silicon pellet and copper baseplates. Under-clamping increases RthJC and risks hot-spot formation; over-clamping may deform the housing or damage internal metallization. Torque values must be validated per the mounting stud thread specification and thermal interface material used.

Does D931SH65TXPSA1 require an external snubber circuit?

No-D931SH65TXPSA1 is explicitly designed as a "fast hard drive diode" for snubberless operation in IGCT and IGBT applications. Its soft recovery (FRRS = 1.6) and low recovered charge (Qr ≤ 3.5 mAs) suppress voltage overshoot during high-di/dt turn-off without external RC networks, provided the clamp circuit (LS ≤ 0.25 µH, RCL = 68 Ω, CCL = 3 µF) is implemented per Infineon's reference design.

Can D931SH65TXPSA1 be used with single-sided cooling?

Yes, but with derating. The datasheet specifies RthJC = 17.4 K/kW (anode-side) and 23.6 K/kW (cathode-side) for single-sided cooling. This increases thermal resistance by ≥74% versus two-sided operation (10 K/kW), requiring reduced IFAVM or enhanced heatsink performance. For sustained 940 A operation, two-sided cooling is mandatory per the rated specification.

What is the maximum allowable junction temperature and how is it monitored?

The absolute maximum junction temperature (Tvj max) is 140 °C. Since the device lacks integrated temperature sensors, Tvj must be calculated using the thermal model ZthJC(t) and measured case temperature (Tc) at the anode or cathode stud. Real-time monitoring requires external thermistors mounted on the heatsink surface adjacent to each stud, calibrated against the published transient thermal impedance curves.

D931SH65TXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: DO-200AD

Packaging:: Tray

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 6500 V

Current - Average Rectified (Io):: 1220A

Voltage - Forward (Vf) (Max) @ If:: 5.6 V @ 2500 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 mA @ 6500 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

Supplier Device Package:: -

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

D931SH65TXPSA1 FAQ

1.How can I place an order for D931SH65TXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for D931SH65TXPSA1 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 D931SH65TXPSA1 reliable?

The price and inventory of D931SH65TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D931SH65TXPSA1 is usually 5 days.

3.What payment methods are accepted for D931SH65TXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D931SH65TXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for D931SH65TXPSA1?

D931SH65TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your D931SH65TXPSA1 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 D931SH65TXPSA1?

For technical support, including D931SH65TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D931SH65TXPSA1 requirements.

6.How does Aetrix verify that D931SH65TXPSA1 is sourced from the original manufacturer or authorized distributors?

All D931SH65TXPSA1 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 D931SH65TXPSA1 meets industry standards.

7.What is the process for return or replacement of D931SH65TXPSA1?

All D931SH65TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D931SH65TXPSA1, 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 D931SH65TXPSA1 part is unused and in its original packaging.

Return procedure for D931SH65TXPSA1:

1.Submit a request within 90 days.

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

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