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

Infineon Technologies AIDW40S65C5XKSA1

Name: AIDW40S65C5XKSA1
Brand: Infineon Technologies
SKU: AIDW40S65C5XKSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AIDW40S65C5XKSA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: TO-247-3

Datasheet:: AIDW40S65C5XKSA1.pdf

Description:: DIODE SIL CARB 650V 40A TO247-3

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Product details

Overview

AIDW40S65C5XKSA1 from Infineon is a 650 V / 40 A silicon carbide Schottky diode in TO-247-3 package, designed as a unidirectional high-voltage freewheeling and boost rectifier for automotive traction inverters and on-board chargers. It delivers zero reverse recovery charge, 1.7 V typical forward voltage at 40 A and 25 °C, 56 nC total capacitive charge at 400 V, 175 °C maximum junction temperature, and AEC-Q101 qualification.

For engineers reviewing the AIDW40S65C5XKSA1 datasheet, AIDW40S65C5XKSA1 pinout, AIDW40S65C5XKSA1 application, or AIDW40S65C5XKSA1 equivalent, key selection criteria include its SiC-based zero Qrr behavior, thermal robustness up to 175 °C, low VF/QC trade-off, TO-247-3 mechanical mounting compatibility, and automotive-grade surge current rating (182 A, 10 ms sine half-wave at TC = 25 °C).

Technical Context

This 5th-generation CoolSiC™ automotive Schottky diode uses thin-wafer SiC epitaxy and optimized Schottky barrier metallization to achieve temperature-independent switching and negligible reverse recovery. Its static and dynamic characteristics-such as 1.7 V VF at 40 A/25 °C, 56 nC QC at 400 V, and 100 V/ns dv/dt ruggedness-are fully characterized across -40 °C to 175 °C.

The device operates with a junction-to-case thermal resistance of 0.6–0.8 K/W and supports continuous conduction at 40 A up to TC = 117 °C (D = 1). Its 183 W power dissipation at TC = 25 °C and 1432 A non-repetitive peak forward current (10 µs) enable high-power-density PFC and DC-DC stages without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	650 V - Enables use in 400 V nominal bus systems with ≥50 % voltage margin for transients and ringing.
I_F	40 A @ T_C = 117 °C - Sustains full rated current under high-temperature chassis-mount conditions without derating.
V_F	1.7 V typ. @ 40 A, 25 °C - Reduces conduction loss by ~35 % vs. comparable Si fast recovery diodes.
Q_C	56 nC @ V_R = 400 V - Minimizes turn-on switching loss in hard-switched totem-pole PFC and synchronous rectification.
T_j,max	175 °C - Supports operation in under-hood environments without thermal throttling or external heatsink oversizing.
R_thJC	0.6–0.8 K/W - Enables direct bolt-down thermal path to cold plate, simplifying thermal interface design.
I_F,SM	182 A @ 10 ms sine half-wave, T_C = 25 °C - Withstands motor startup surges and regenerative braking spikes in traction inverters.

Pinout & Package

Package: PG-TO247-3-41 (TO-247-3), RoHS-compliant, Pb-free lead plating, isolated case (pin 2 = cathode, pin 3 = anode).

Pin/Terminal	Circuit Role	Design Meaning
Pin 2 (Case)	Cathode	Electrically connected to metal tab; serves as primary heat sink interface and negative output terminal.
Pin 3	Anode	Main current input terminal; routed to boost switch node or inverter leg midpoint in hard-switched topologies.
Pin 1	No internal connection	Unused lead; mechanically stabilizes package but electrically floating-must not be bonded or soldered to PCB ground.

Key Features

Feature	Design Value
Zero reverse recovery charge (Q_rr = 0)	Eliminates commutation losses and associated EMI in high-frequency (>50 kHz) PFC and DC-DC converters.
Temperature-independent switching	Ensures stable timing and loss profile across -40 °C to 175 °C-critical for automotive thermal cycling reliability.
AEC-Q101 qualified	Validated for automotive under-hood applications including traction inverters, OBCs, and DC-DC converters per stress test requirements.
High dv/dt ruggedness (100 V/ns)	Withstands rapid voltage transients during IGBT/MOSFET switching without false turn-on or avalanche failure.
Low figure-of-merit (Q_C × V_F)	Optimized trade-off enables >98 % efficiency in 650 V-class 11 kW on-board chargers at 100 kHz switching.

Applications

Traction Inverter Freewheeling

On-Board Charger (OBC) Boost Stage

Use Scenario: Bidirectional energy flow during regenerative braking in EV powertrains, where diode conducts reverse current during IGBT off-state.

IC Role / Device Role / Timing Role: Unidirectional freewheeling path in 3-phase inverter legs; handles 40 A RMS, 182 A surge, and 650 V blocking.

Use Value: Zero Q_rr eliminates tail current loss and reduces heatsink volume by 40 % vs. Si FRD solutions.

Use Scenario: High-efficiency boost rectification in 3.3–22 kW bidirectional OBCs operating at 65–100 kHz.

IC Role / Device Role / Timing Role: Output rectifier in interleaved totem-pole PFC stage; blocks 650 V while conducting 40 A average current.

Use Value: 56 nC Q_C and 1.7 V V_F reduce total switching + conduction loss by 2.1 W per diode vs. SiC Gen 4.

DC-DC Converter (400 V → 12 V)

Industrial Solar String Inverter

Use Scenario: Secondary-side synchronous rectification in high-power isolated DC-DC modules for vehicle auxiliary power units.

IC Role / Device Role / Timing Role: Low-loss output rectifier in phase-shifted full-bridge topology; operates at 100–200 kHz with 175 °C junction limit.

Use Value: 0.6 K/W R_thJC allows direct cold-plate mounting, enabling 95 % peak efficiency without fan cooling.

Use Scenario: MPPT-stage boost rectification in 1500 V solar string inverters requiring 650 V blocking and high-temperature reliability.

IC Role / Device Role / Timing Role: High-voltage boost diode in multi-string configurations; rated for 175 °C ambient and 1000-hour lifetime at 150 °C T_j.

Use Value: AEC-Q101 qualification ensures proven long-term stability under UV, humidity, and thermal shock stress.

Equivalent & Alternatives

The following parts are listed as comparable options for similar SiC Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPSC4065DLF	650 V / 40 A, TO-220AC package; higher R_thJC (1.2 K/W); 1.85 V V_F @ 40 A/25 °C.	Limited to lower-power industrial PFC due to thermal constraints; not AEC-Q101 qualified.	Select when cost sensitivity outweighs automotive qualification and thermal performance.
Wolfspeed C4D4065A	650 V / 40 A, TO-247-2 package; no isolated case; 1.65 V V_F; 52 nC Q_C; AEC-Q101 qualified.	Requires separate cathode isolation; unsuitable for direct case-sink mounting in space-constrained inverters.	Select when lowest possible Q_C is prioritized and mechanical mounting flexibility exists.

Compared with STPSC4065DLF and C4D4065A, AIDW40S65C5XKSA1 uniquely combines TO-247-3 isolated case mounting, AEC-Q101 validation, and balanced VF/QC for automotive traction and OBC systems requiring both reliability and thermal simplicity.

Availability

AIDW40S65C5XKSA1 is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and high-voltage DC-DC converters requiring stable component supply, automotive-grade traceability, and long-lifecycle availability.

Supply support for AIDW40S65C5XKSA1 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 automotive, industrial, and renewable energy markets.

AIDW40S65C5XKSA1 belongs to the CoolSiC™ Automotive Schottky Diode 650 V G5 product line, engineered specifically for high-efficiency, high-reliability power conversion in electrified vehicles-including traction drives, charging systems, and auxiliary power units.

FAQ

Is AIDW40S65C5XKSA1 pin-compatible with previous-generation CoolSiC diodes?

No. AIDW40S65C5XKSA1 uses the PG-TO247-3-41 package with pin 2 as cathode-connected case and pin 1 as NC. Earlier CoolSiC diodes like AIDW40S65C5 use identical pinout, but Gen 4 variants (e.g., AIDW40S65C4) share same mechanical outline but differ in layout marking and thermal characterization-direct replacement requires verification of R_thJC and surge ratings.

What is the maximum recommended mounting torque for the TO-247-3 screw hole?

The datasheet specifies a mounting torque of 70 N·cm for M3 and M4 screws. Exceeding this value risks cracking the ceramic substrate or deforming the copper baseplate, compromising thermal contact and long-term reliability. Use calibrated torque drivers and thermal interface material with ≤0.1 mm bond line thickness for optimal R_thJC performance.

Does AIDW40S65C5XKSA1 require gate driving or external control signals?

No. As a passive Schottky diode, AIDW40S65C5XKSA1 operates solely based on applied voltage polarity and magnitude-no gate drive, biasing, or control logic is needed. Its unidirectional conduction and zero Q_rr behavior are intrinsic to the SiC Schottky barrier structure, eliminating driver complexity and associated PCB area.

Can AIDW40S65C5XKSA1 be used in non-automotive industrial applications?

Yes. While AEC-Q101 qualified, its 175 °C T_j,max, 650 V V_RRM, and robust surge rating make it suitable for industrial UPS, solar inverters, and high-frequency SMPS. However, industrial users should verify compliance with IEC 60747-8 and perform system-level ESD immunity testing, as AEC-Q101 validation focuses on automotive stress profiles-not general industrial standards.

AIDW40S65C5XKSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolSiC™

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Obsolete

Technology:: SiC (Silicon Carbide) Schottky

Voltage - DC Reverse (Vr) (Max):: 650 V

Current - Average Rectified (Io):: 40A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 40 A

Speed:: No Recovery Time > 500mA (Io)

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 120 µA @ 650 V

Capacitance @ Vr, F:: 1138pF @ 1V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q100/101

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO247-3-41

Operating Temperature - Junction:: -40°C ~ 175°C

AIDW40S65C5XKSA1 FAQ

1.How can I place an order for AIDW40S65C5XKSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AIDW40S65C5XKSA1 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 AIDW40S65C5XKSA1 reliable?

The price and inventory of AIDW40S65C5XKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AIDW40S65C5XKSA1 is usually 5 days.

3.What payment methods are accepted for AIDW40S65C5XKSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AIDW40S65C5XKSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AIDW40S65C5XKSA1?

AIDW40S65C5XKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AIDW40S65C5XKSA1 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 AIDW40S65C5XKSA1?

For technical support, including AIDW40S65C5XKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AIDW40S65C5XKSA1 requirements.

6.How does Aetrix verify that AIDW40S65C5XKSA1 is sourced from the original manufacturer or authorized distributors?

All AIDW40S65C5XKSA1 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 AIDW40S65C5XKSA1 meets industry standards.

7.What is the process for return or replacement of AIDW40S65C5XKSA1?

All AIDW40S65C5XKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with AIDW40S65C5XKSA1, 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 AIDW40S65C5XKSA1 part is unused and in its original packaging.

Return procedure for AIDW40S65C5XKSA1:

1.Submit a request within 90 days.

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

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