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Vishay General Semiconductor - Diodes Division VS-12FL10S05
- Part No.:
- VS-12FL10S05
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-203AA, DO-4, Stud
- Datasheet:
-
VS-12FL10S05.pdf
- Description:
- DIODE GEN PURP 100V 12A DO203AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,162
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Product details
Overview
VS-12FL10S05 from Vishay Semiconductors is a fast recovery stud-mount diode rated for 12 A average forward current, 1000 V repetitive peak reverse voltage (VRRM), and 225 A non-repetitive surge current (IFSM at 60 Hz), designed for high-power freewheeling and converter applications in industrial power supplies.
For engineers reviewing the VS-12FL10S05 datasheet, VS-12FL10S05 pinout, VS-12FL10S05 application, or VS-12FL10S05 equivalent, key selection criteria include its 390 ns reverse recovery time (trr) at TJ = 25 °C with dIF/dt = 100 A/μs, 3000 nC reverse recovery charge (Qrr), DO-4 (DO-203AA) stud cathode package, and thermal resistance of 2.0 °C/W (junction-to-case).
Technical Context
This device belongs to Vishay's VS-12FL(R) series of fast recovery diodes with stud cathode configuration, optimized for high-current, high-voltage switching circuits where low stored charge and short trr reduce switching losses. It operates across -65 °C to +150 °C junction temperature range and supports sinusoidal or rectangular conduction waveforms up to 180°.
The VS-12FL10S05 uses a planar passivated silicon die structure with fully characterized reverse recovery under standardized test conditions (IF = 1 A to VR = 30 V, dIF/dt = 100 A/μs), enabling predictable performance in hard-switched inverters and choppers where di/dt exceeds 25 A/μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V maximum repetitive peak reverse voltage - ensures safe blocking in 800 V DC bus systems with margin. |
| IF(AV) | 12 A average forward current at TC = 100 °C - supports continuous conduction in high-power rectifiers and converters. |
| trr | 390 ns reverse recovery time at TJ = 25 °C, dIF/dt = 100 A/μs - minimizes turn-off loss and EMI in 20–100 kHz switching topologies. |
| Qrr | 3000 nC reverse recovery charge at TJ = 25 °C, dIF/dt = 100 A/μs - directly impacts snubber sizing and switching stress on paired IGBTs/MOSFETs. |
| RthJC | 2.0 °C/W junction-to-case thermal resistance - enables efficient heat transfer to heatsink with ≤24 W dissipation at TC = 100 °C. |
| IFSM (60 Hz) | 190 A non-repetitive surge current - withstands motor startup surges and short-circuit fault currents in industrial drives. |
| VFM | 1.5 V forward voltage at TC = 100 °C, IFM = π × 12 A - determines conduction loss (≈18.8 W peak) in high-duty-cycle operation. |
Pinout & Package
VS-12FL10S05 uses the DO-4 (DO-203AA) stud-mount package with cathode stud termination and insulated anode flange. The device features a single-diode configuration with two terminals: anode (flat flange side) and cathode (threaded stud).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (flange) | Forward current entry point | Electrically isolated mounting surface; requires insulating washer when mounted to grounded heatsink. |
| Cathode (stud) | Forward current exit / reverse blocking terminal | Threaded M5 × 0.8 (metric) or 10/32" UNF-2A (standard) stud; serves as mechanical anchor and primary thermal path to heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Short reverse recovery time | 390 ns at standard test conditions - reduces switching loss and improves efficiency in 20–100 kHz converters. |
| Low stored charge | 3000 nC Qrr - lowers voltage overshoot and stress on complementary switches during commutation. |
| Stud cathode construction | Direct thermal path from junction to heatsink via threaded stud - achieves 2.0 °C/W RthJC without auxiliary thermal interface. |
| JEDEC® DO-4 compliance | Standardized mechanical outline per DO-203AA - ensures compatibility with existing stud-mount fixtures and thermal pads. |
| Wide operating temperature | -65 °C to +150 °C TJ range - supports deployment in harsh environments including motor control cabinets and outdoor power systems. |
Applications
| Industrial DC Power Supplies | Inverters |
|---|---|
Use Scenario: High-current output rectification in 48 V–400 V industrial SMPS with active PFC front-end. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectifier stage and output filter choke return path. Use Value: 390 ns trr and 3000 nC Qrr minimize cross-conduction loss and enable >94% system efficiency at 50 kHz switching. |
Use Scenario: Anti-parallel freewheeling path for 1200 V IGBTs in 3-phase VFDs driving 15–30 kW AC motors. IC Role / Device Role / Timing Role: Reverse-biased clamping diode during IGBT turn-off, absorbing inductive energy from motor windings. Use Value: 190 A IFSM (60 Hz) and 2.0 °C/W RthJC sustain repeated 10 ms surge events without thermal runaway. |
| Converters | Ultrasonic Systems |
Use Scenario: Output stage diode in resonant LLC and phase-shifted full-bridge converters for telecom rectifiers. IC Role / Device Role / Timing Role: Unidirectional current path in secondary-side synchronous rectification or passive rectification circuits. Use Value: Low VFM (1.5 V @ 100 °C) reduces conduction loss at high load, while DO-4 stud mount simplifies thermal management in compact chassis. |
Use Scenario: High-frequency (>20 kHz) power conversion in ultrasonic welding generators and cleaning equipment. IC Role / Device Role / Timing Role: Fast recovery path for transformer leakage inductance energy during zero-voltage switching transitions. Use Value: 225 A IFSM and 390 ns trr ensure reliable operation under rapid polarity reversal and high di/dt transients typical in ultrasonic drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSK12-10 | Same 12 A / 1000 V rating, but TO-247AC package with isolated tab; RthJC = 2.5 °C/W; trr = 450 ns (S05 grade). | Requires PCB-mount heatsinking; less suitable for high-vibration environments due to lead-frame construction. | Prefer VS-12FL10S05 for stud-mounted, high-surge industrial systems; choose VSK12-10 only if board-level assembly and lower cost are priorities. |
| STTH12R06D | 12 A / 600 V VRRM, DPAK package; trr = 35 ns (ultrafast); RthJC = 1.5 °C/W but limited to 600 V blocking. | Not suitable for 800–1000 V DC bus applications; optimized for <100 kHz, low-VRRM SMPS. | Select STTH12R06D only in 400–600 V systems requiring sub-50 ns trr; VS-12FL10S05 remains mandatory for 1000 V-rated designs. |
Compared with VSK12-10 and STTH12R06D, VS-12FL10S05 uniquely combines 1000 V blocking, 390 ns trr, and stud-mount thermal robustness-making it irreplaceable in high-reliability, high-voltage industrial converters where mechanical stability and surge immunity are critical.
Availability
VS-12FL10S05 is available at Aetrix Electronics and suitable for industrial DC power supplies, motor drive inverters, and high-frequency converters requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.
Supply support for VS-12FL10S05 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 demanding industrial and automotive applications.
The VS-12FL(R) series was developed specifically for high-current, high-voltage power conversion systems requiring robust fast recovery performance, low thermal resistance, and mechanical durability in stud-mount configurations.
FAQ
What is the reverse recovery time (trr) specification for VS-12FL10S05 under standard test conditions?
The VS-12FL10S05 has a maximum reverse recovery time of 390 ns at TJ = 25 °C, IF = 1 A to VR = 30 V, and dIF/dt = 100 A/μs. This value is confirmed in the Recovery Characteristics table of Vishay document 93138 and applies specifically to the S05 variant denoted by the "S05" suffix in VS-12FL10S05.
Does VS-12FL10S05 have a stud anode or stud cathode configuration?
VS-12FL10S05 uses a stud cathode configuration, as indicated by the "R" suffix in the ordering code (VS-12FL10S05 follows the pattern VS-[current]FL[R], where "R" denotes reverse polarity - i.e., cathode on the stud). The anode is the insulated flange surface.
What is the maximum allowable case temperature for VS-12FL10S05 at 12 A average forward current?
At 12 A average forward current (IF(AV)), the maximum allowable case temperature (TC) for VS-12FL10S05 is 100 °C, as specified in the Major Ratings and Characteristics table. Derating is required above this temperature per the conduction-angle nomograms in Figures 2 and 7 of the datasheet.
Is VS-12FL10S05 RoHS-compliant and halogen-free?
Yes, VS-12FL10S05 complies with RoHS Directive 2011/65/EU and is halogen-free, as confirmed by Vishay's material categorization documentation (www.vishay.com/doc?99912) referenced in the product family datasheet revision 11-Jan-18.
What is the thermal resistance junction-to-case (RthJC) for VS-12FL10S05, and how does it impact heatsink design?
The VS-12FL10S05 has a maximum RthJC of 2.0 °C/W under DC operation. This low value enables efficient heat extraction through the cathode stud, allowing designers to size heatsinks based on total power dissipation (e.g., ~18.8 W at peak conduction) without requiring additional thermal interface layers beyond standard thermal grease.
VS-12FL10S05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-203AA, DO-4, Stud
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis, Stud Mount
- Supplier Device Package:
- DO-203AA (DO-4)
- Operating Temperature - Junction:
- -65°C ~ 150°C
VS-12FL10S05 FAQ
1.How can I place an order for VS-12FL10S05 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-12FL10S05 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-12FL10S05 reliable?
The price and inventory of VS-12FL10S05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-12FL10S05 is usually 5 days.
3.What payment methods are accepted for VS-12FL10S05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-12FL10S05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-12FL10S05?
VS-12FL10S05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-12FL10S05 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-12FL10S05?
For technical support, including VS-12FL10S05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-12FL10S05 requirements.
6.How does Aetrix verify that VS-12FL10S05 is sourced from the original manufacturer or authorized distributors?
All VS-12FL10S05 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-12FL10S05 meets industry standards.
7.What is the process for return or replacement of VS-12FL10S05?
All VS-12FL10S05 units undergo pre-shipment inspection (PSI). If there is an issue with VS-12FL10S05, 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-12FL10S05 part is unused and in its original packaging.
Return procedure for VS-12FL10S05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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