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

Vishay General Semiconductor - Diodes Division VS-40HFL60S02

Name: VS-40HFL60S02
Brand: Vishay General Semiconductor - Diodes Division
SKU: VS-40HFL60S02
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VS-40HFL60S02

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-203AB, DO-5, Stud

Datasheet:: VS-40HFL60S02.pdf

Description:: DIODE GEN PURP 600V 40A DO203AB

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Product details

Overview

VS-40HFL60S02 from Vishay Semiconductors is a fast recovery stud-mount diode rated for 40 A average forward current, 600 V peak repetitive reverse voltage (V_RRM), and 400 A non-repetitive surge current (I_FSM, 10 ms, 50 Hz). It features a short 70 ns typical reverse recovery time (t_rr) at 25 °C with 1 A forward current and 30 V reverse voltage, low 160 nC reverse recovered charge (Q_rr), and is used as a freewheeling or output rectifier in high-current DC power supplies and inverters.

For engineers reviewing the VS-40HFL60S02 datasheet, VS-40HFL60S02 pinout, VS-40HFL60S02 application, or VS-40HFL60S02 equivalent, key selection criteria include its DO-5 (DO-203AB) stud cathode package, thermal resistance of 0.60 K/W (junction-to-case), and compatibility with high-surge, high-temperature industrial switching circuits requiring stable conduction up to 125 °C junction temperature.

Technical Context

This device belongs to the VS-40HFL series of fast recovery diodes optimized for high-current, high-voltage switching applications where low stored charge and rapid turn-off are critical. Its design targets minimal reverse recovery loss during commutation in hard-switched converters and choppers.

The VS-40HFL60S02 uses a planar junction structure with controlled lifetime reduction to achieve fast recovery while maintaining high surge capability and low forward voltage drop (V_FM = 1.95 V at 25 °C, I_F = π × 40 A). It is specified for operation across -40 °C to +125 °C junction temperature range and requires mechanical mounting to a heatsink via its threaded stud cathode terminal.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - Maximum repetitive reverse blocking voltage; defines maximum DC bus or AC peak voltage it can withstand without breakdown.
I_F(AV)	40 A - Average forward current at 85 °C case temperature; determines continuous conduction capability in half-wave or full-wave rectifiers.
t_rr (typ)	70 ns - Reverse recovery time at 25 °C, 1 A, 30 V, 100 A/μs dI/dt; directly impacts switching losses and EMI in high-frequency converters.
Q_rr (typ)	160 nC - Reverse recovered charge under same conditions; lower value reduces tail current and improves efficiency in hard-switched topologies.
R_thJC	0.60 K/W - Junction-to-case thermal resistance; enables accurate thermal design when mounted to a heatsink with known R_thCS.
V_FM	1.95 V - Forward voltage drop at 25 °C and π × 40 A; sets conduction loss baseline for thermal and efficiency calculations.
I_FSM	400 A - Non-repetitive surge current (10 ms, 50 Hz); supports short-term overload tolerance during motor startup or fault transients.

Pinout & Package

VS-40HFL60S02 uses a DO-5 (DO-203AB) stud-mount package with cathode connected to the threaded metal stud and anode accessible via the insulated lead. Mounting torque is 3.4 N·m (30 lbf·in) for non-lubricated threads tightened on the nut.

Pin/Terminal	Circuit Role	Design Meaning
Stud (cathode)	DC return path / heat sink interface	Electrically and thermally connects to system ground or negative rail; must be mounted to a heatsink with thermal grease for reliable operation.
Anode lead	Forward current input	Insulated wire lead carrying positive-side current; requires proper strain relief and creepage clearance in high-voltage designs.

Key Features

Feature	Design Value
Short reverse recovery time	70 ns typical enables use in 20–100 kHz switching converters without excessive switching loss or snubber requirements.
Low stored charge	160 nC Q_rr minimizes reverse conduction tail current, reducing cross-conduction risk in bridge configurations.
High surge capability	400 A I_FSM (10 ms) supports robust operation during inrush or short-circuit events in industrial motor drives.
Stud cathode construction	DO-5 metal stud provides direct thermal path to heatsink and eliminates need for additional mounting hardware or insulating washers.
Wide operating temperature	-40 °C to +125 °C junction range ensures reliability in demanding environments such as solar inverters and UPS systems.

Applications

DC Power Supplies	Inverters
Use Scenario: High-current output rectification in three-phase 400 V AC–DC front ends for telecom and industrial SMPS. IC Role / Device Role / Timing Role: Output freewheeling diode conducting during low-side switch off-time in synchronous rectification or passive rectifier stages. Use Value: Low t_rr and Q_rr reduce switching losses by >15 % compared to standard recovery diodes, improving overall efficiency at 50–100 kHz.	Use Scenario: DC link clamping and regenerative energy recirculation in 30–50 kW motor drive inverters. IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across IGBTs, handling reactive current during PWM dead-time and braking intervals. Use Value: 400 A I_FSM and 0.60 K/W R_thJC allow sustained conduction during transient overloads without thermal runaway.
Converters	Ultrasonic Systems
Use Scenario: Output stage rectification in isolated DC–DC converters for battery chargers and EV auxiliary power units. IC Role / Device Role / Timing Role: Secondary-side fast recovery diode in center-tapped or full-bridge synchronous rectifier designs. Use Value: 600 V V_RRM supports 400 V nominal DC bus with 50 % safety margin, meeting IEC 61000-4-5 surge immunity requirements.	Use Scenario: High-frequency (>20 kHz) resonant rectification in ultrasonic cleaning and welding generators. IC Role / Device Role / Timing Role: Unidirectional current path in Class-D resonant tank output stages, requiring minimal reverse recovery delay. Use Value: 70 ns t_rr prevents reverse conduction overlap with switching transitions, preserving waveform fidelity and minimizing heating in ceramic transducers.

DC Power Supplies

Inverters

Use Scenario: High-current output rectification in three-phase 400 V AC–DC front ends for telecom and industrial SMPS.

IC Role / Device Role / Timing Role: Output freewheeling diode conducting during low-side switch off-time in synchronous rectification or passive rectifier stages.

Use Value: Low t_rr and Q_rr reduce switching losses by >15 % compared to standard recovery diodes, improving overall efficiency at 50–100 kHz.

Use Scenario: DC link clamping and regenerative energy recirculation in 30–50 kW motor drive inverters.

IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across IGBTs, handling reactive current during PWM dead-time and braking intervals.

Use Value: 400 A I_FSM and 0.60 K/W R_thJC allow sustained conduction during transient overloads without thermal runaway.

Converters

Ultrasonic Systems

Use Scenario: Output stage rectification in isolated DC–DC converters for battery chargers and EV auxiliary power units.

IC Role / Device Role / Timing Role: Secondary-side fast recovery diode in center-tapped or full-bridge synchronous rectifier designs.

Use Value: 600 V V_RRM supports 400 V nominal DC bus with 50 % safety margin, meeting IEC 61000-4-5 surge immunity requirements.

Use Scenario: High-frequency (>20 kHz) resonant rectification in ultrasonic cleaning and welding generators.

IC Role / Device Role / Timing Role: Unidirectional current path in Class-D resonant tank output stages, requiring minimal reverse recovery delay.

Use Value: 70 ns t_rr prevents reverse conduction overlap with switching transitions, preserving waveform fidelity and minimizing heating in ceramic transducers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
VS-40EWH60S02	Same 40 A / 600 V rating but epoxy-encapsulated DO-201AD package; no stud mount; higher R_thJC (1.2 K/W).	Suitable for PCB-mounted designs with forced-air cooling; not for high-power stud-heatsink interfaces.	Select VS-40EWH60S02 only if mechanical mounting constraints prohibit stud installation or if isolation from heatsink is required.
VS-70HFL60S02	Higher 70 A I_F(AV), same 600 V V_RRM, lower R_thJC (0.36 K/W), identical DO-5 stud package and pinout.	Direct upgrade path for higher current density designs; requires same heatsink but delivers 75 % more average current capacity.	Choose VS-70HFL60S02 when system derating or future-proofing demands headroom beyond 40 A continuous conduction.

Compared with VS-40EWH60S02, VS-40HFL60S02 offers superior thermal performance and ruggedness for high-power stud-mount applications; versus VS-70HFL60S02, it provides cost and size optimization where 40 A is sufficient, avoiding unnecessary overspec.

Availability

VS-40HFL60S02 is available at Aetrix Electronics and suitable for DC power supplies, inverters, and converters requiring stable component supply with long-term industrial lifecycle support.

Supply support for VS-40HFL60S02 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

Vishay Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for industrial, automotive, and power systems.

The VS-40HFL series is designed for high-current, high-voltage switching applications including industrial motor drives, renewable energy inverters, and heavy-duty power conversion where fast recovery, surge robustness, and thermal stability are essential.

FAQ

What is the maximum junction temperature rating for VS-40HFL60S02?

The VS-40HFL60S02 has a specified junction operating temperature range of -40 °C to +125 °C. This rating is confirmed in the "THERMAL AND MECHANICAL SPECIFICATIONS" table of Vishay document 93150. Operation beyond +125 °C risks permanent degradation of the silicon die and must be avoided even for short durations. Thermal design must ensure T_J remains within this limit under worst-case load and ambient conditions.

Is VS-40HFL60S02 a stud-anode or stud-cathode configuration?

VS-40HFL60S02 is a stud-cathode device: the metal stud serves as the cathode terminal, and the insulated lead is the anode. This is explicitly stated in the "ELECTRICAL SPECIFICATIONS" note (1): "Types listed are cathode case, for anode case add 'R' to code", and VS-40HFL60S02 contains no 'R' suffix. The DO-5 package outline drawing confirms cathode connection to the stud.

What does the 'S02' suffix mean in VS-40HFL60S02?

The 'S02' suffix in VS-40HFL60S02 denotes the reverse recovery speed grade: S02 indicates a typical t_rr of 70 ns at 25 °C, 1 A, 30 V, and 100 A/μs dI/dt. This is verified in the "RECOVERY CHARACTERISTICS" table on page 3 of document 93150, which lists S02 variants for all VS-40HFL types with identical 70 ns t_rr values.

Can VS-40HFL60S02 be used in place of VS-40HFL60S05?

No - VS-40HFL60S02 and VS-40HFL60S05 are not interchangeable without circuit validation. While both share 40 A / 600 V ratings, the S05 variant has a slower 180 ns typical t_rr and higher 750 nC Q_rr. Substituting S02 for S05 may cause increased EMI or gate drive stress in circuits designed around slower recovery; substituting S05 for S02 risks excessive switching loss and thermal failure.

What is the recommended mounting torque for VS-40HFL60S02?

The recommended mounting torque for VS-40HFL60S02 is 3.4 N·m (30 lbf·in) when using non-lubricated threads tightened on the nut, as specified in the "THERMAL AND MECHANICAL SPECIFICATIONS" table on page 3 of document 93150. Exceeding this torque risks damaging the stud or compromising the internal bond; under-torquing increases thermal resistance and may cause premature failure under thermal cycling.

VS-40HFL60S02 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-203AB, DO-5, Stud

Packaging:: Bulk

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 600 V

Current - Average Rectified (Io):: 40A

Voltage - Forward (Vf) (Max) @ If:: 1.95 V @ 40 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 200 ns

Current - Reverse Leakage @ Vr:: 100 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Chassis, Stud Mount

Supplier Device Package:: DO-203AB (DO-5)

Operating Temperature - Junction:: -40°C ~ 125°C

VS-40HFL60S02 FAQ

1.How can I place an order for VS-40HFL60S02 through Aetrix?

Please submit a Request for Quotation (RFQ) for VS-40HFL60S02 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 VS-40HFL60S02 reliable?

The price and inventory of VS-40HFL60S02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-40HFL60S02 is usually 5 days.

3.What payment methods are accepted for VS-40HFL60S02?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-40HFL60S02 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VS-40HFL60S02?

VS-40HFL60S02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VS-40HFL60S02 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 VS-40HFL60S02?

For technical support, including VS-40HFL60S02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-40HFL60S02 requirements.

6.How does Aetrix verify that VS-40HFL60S02 is sourced from the original manufacturer or authorized distributors?

All VS-40HFL60S02 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 VS-40HFL60S02 meets industry standards.

7.What is the process for return or replacement of VS-40HFL60S02?

All VS-40HFL60S02 units undergo pre-shipment inspection (PSI). If there is an issue with VS-40HFL60S02, 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 VS-40HFL60S02 part is unused and in its original packaging.

Return procedure for VS-40HFL60S02:

1.Submit a request within 90 days.

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

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