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Vishay General Semiconductor - Diodes Division VS-85HFLR10S02M
- Part No.:
- VS-85HFLR10S02M
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-203AB, DO-5, Stud
- Datasheet:
-
VS-85HFLR10S02M.pdf
- Description:
- DIODE GP REV 100V 85A DO203AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,937
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Product details
Overview
VS-85HFLR10S02M from Vishay Semiconductors is a fast recovery stud-mount diode with 85 A average forward current, 100 V peak repetitive reverse voltage (VRRM), and 50 ns typical reverse recovery time (trr) at TJ = 25 °C, IF = 1 A, dIF/dt = 100 A/μs. It features low forward voltage drop (1.75 V at TJ = 25 °C, IFM = π × IF(AV)), low stored charge, and high surge capability (IFSM = 1151 A at 60 Hz), designed for high-power freewheeling and DC power supply rectification.
For engineers reviewing the VS-85HFLR10S02M datasheet, VS-85HFLR10S02M pinout, VS-85HFLR10S02M application, or VS-85HFLR10S02M equivalent, this device delivers verified fast-recovery performance in DO-5 (DO-203AB) stud-anode configuration with M6 × 1 threaded stud, supporting thermal management in industrial inverters, motor drives, and high-current chopper circuits where low Qrr and robust I²t rating are critical.
Technical Context
This diode belongs to Vishay's VS-85HFL series of fast recovery rectifiers optimized for high-current, high-efficiency switching applications. Its short trr and low Qrr stem from controlled lifetime carrier recombination, enabling reduced switching losses in hard-commutated topologies.
The M-suffixed variant uses an M6 × 1 metric stud (vs. standard 1/4"–28 UNF), ensuring compatibility with metric heatsink mounting. As a stud-anode device (denoted by "R"), the anode is electrically connected to the metal stud, requiring insulated mounting when cathode-referenced circuitry is used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC-link or freewheeling paths. |
| IF(AV) | 85 A - Average forward current at TC = 85 °C; enables continuous conduction in high-power converters without derating. |
| trr (typ) | 50 ns - Measured at TJ = 25 °C, IF = 1 A, dIF/dt = 100 A/μs; ensures minimal switching loss and EMI in kHz-range SMPS. |
| Qrr (typ) | 70 nC - Reverse recovered charge under same conditions; directly impacts snubber sizing and turn-off stress on paired switches. |
| VF (max) | 1.75 V - Forward voltage at TJ = 25 °C, IFM = π × 85 A ≈ 267 A; determines conduction loss and thermal load at rated current. |
| RthJC | 0.30 K/W - Junction-to-case thermal resistance; supports >100 W dissipation with modest heatsinking (e.g., RthSA ≤ 0.5 K/W). |
| IFSM (60 Hz) | 1151 A - Non-repetitive surge current; withstands motor startup inverter overloads and line transients without failure. |
Pinout & Package
VS-85HFLR10S02M uses the DO-5 (DO-203AB) stud package with M6 × 1 metric threaded anode stud and isolated cathode terminal. The stud serves as the anode connection; the cathode is brought out via an insulated lead or solder lug depending on assembly method. Mounting requires torque control (3.2 N·m for lubricated hexagon tightening) to ensure thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode Stud (M6 × 1) | Anode connection | Electrically active anode terminal; must be mounted to heatsink with insulating washer if cathode-referenced topology is used. |
| Cathode Lead | Cathode connection | Isolated copper lead for PCB or busbar connection; polarity confirmed by "R" suffix (stud = anode). |
Key Features
| Feature | Design Value |
|---|---|
| Stud-anode configuration | Enables direct thermal coupling to heatsink while isolating cathode node-critical for high-side switch freewheeling in three-phase inverters. |
| 50 ns trr (S02 speed grade) | Reduces reverse recovery energy loss by >40% vs. S05 grade (120 ns), improving efficiency in 20–50 kHz motor drive carriers. |
| Low Qrr (70 nC) | Minimizes voltage overshoot across IGBTs during turn-off, reducing need for clamping circuits in high-dV/dt environments. |
| M6 × 1 metric stud | Ensures mechanical compatibility with international industrial heatsinks and eliminates thread adapter requirements in EU/APAC designs. |
| 1151 A IFSM (60 Hz) | Supports 3× rated current surges for ≥10 ms-sufficient for 150% motor overload protection without parallel devices. |
Applications
| Industrial Motor Drives | Uninterruptible Power Supplies (UPS) |
|---|---|
Use Scenario: Bidirectional energy flow in regenerative braking circuits of AC servo drives. IC Role / Device Role / Timing Role: Freewheeling diode in IGBT half-bridge leg, conducting reverse current during inductive kickback. Use Value: 50 ns trr and 70 nC Qrr limit voltage spikes across IGBTs, enabling reliable operation at 16 kHz PWM without snubber redesign. |
Use Scenario: Output rectification in double-conversion online UPS systems handling 10–30 kVA loads. IC Role / Device Role / Timing Role: High-current output stage diode converting inverter AC to regulated DC bus for battery charging. Use Value: 85 A IF(AV) and 0.30 K/W RthJC allow full-load operation with passive heatsinking, reducing fan dependency and acoustic noise. |
| DC Power Supply Rectification | Welding Equipment Choppers |
Use Scenario: Primary rectification in high-efficiency 5 kW telecom rectifier modules. IC Role / Device Role / Timing Role: Input bridge diode handling 3-phase 400 VAC input, conducting during positive half-cycles. Use Value: 100 V VRRM and low VF (1.75 V) reduce conduction loss by ~12% vs. standard 1200 V diodes, improving system efficiency above 94%. |
Use Scenario: Current chopping in resonant inverter-based arc welding power supplies. IC Role / Device Role / Timing Role: Fast-switching freewheel path during MOSFET/IGBT dead-time intervals. Use Value: 1151 A IFSM withstands 10 ms arc initiation surges; 50 ns trr prevents cross-conduction in 100 kHz chopper stages. |
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-85HF10S02M | No "R" suffix → stud-cathode configuration (cathode tied to stud); otherwise identical electrical specs and package. | Requires cathode-referenced heatsink mounting; unsuitable for anode-referenced topologies like high-side freewheeling. | Select VS-85HF10S02M only when thermal path must reference cathode potential and isolation is not required. |
| IXYS DSEI85-12A | 1200 V VRRM, 85 A IF(AV), 75 ns trr (S02), TO-247AC package with isolated tab; higher voltage rating but slower recovery. | Better suited for 600–1200 V DC-link applications (e.g., solar inverters); less optimal for 100 V low-loss rectification. | Choose DSEI85-12A only when higher blocking voltage or TO-247 footprint is mandatory; avoid for 100 V systems due to higher VF. |
Compared with VS-85HFLR10S02M, VS-85HF10S02M offers identical performance in stud-cathode layouts but lacks anode-isolation capability, while DSEI85-12A trades lower trr and optimized 100 V conduction for broader voltage coverage-making VS-85HFLR10S02M the preferred choice for cost-sensitive, thermally constrained 100 V industrial rectification.
Availability
VS-85HFLR10S02M is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and DC power supply rectification requiring stable component supply, long-term BOM continuity, and traceable sourcing from authorized channels.
Supply support for VS-85HFLR10S02M 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 computing markets.
The VS-85HFL series was engineered for high-current, fast-recovery rectification in ruggedized power conversion systems-emphasizing surge robustness, thermal efficiency, and mechanical versatility in stud-mount configurations.
FAQ
What does the "R" in VS-85HFLR10S02M signify?
The "R" suffix indicates stud-anode polarity: the metal M6 × 1 stud serves as the anode terminal, while the isolated lead is the cathode. This configuration is essential for high-side freewheeling applications where the anode must connect directly to the heatsink. VS-85HFLR10S02M differs from non-R variants like VS-85HF10S02M, which use stud-cathode construction. Always verify mounting insulation requirements before layout.
What is the maximum case temperature for continuous operation of VS-85HFLR10S02M?
The maximum case temperature (TC) for VS-85HFLR10S02M is 85 °C under 180° conduction with sinusoidal half-wave current. At this temperature, it sustains 85 A average forward current. Exceeding 85 °C requires derating per Fig. 16 in the datasheet; junction temperature must remain within -40 °C to +125 °C. Thermal design must account for RthJC = 0.30 K/W and mounting torque (3.2 N·m for lubricated hexagon).
How does the S02 speed grade compare to S05 in VS-85HFLR10S02M?
VS-85HFLR10S02M uses the S02 recovery grade, delivering 50 ns typical trr at TJ = 25 °C, IF = 1 A, dIF/dt = 100 A/μs-versus 120 ns for the S05 grade (e.g., VS-85HFLR10S05). This 58% faster recovery reduces Qrr to 70 nC (vs. 340 nC), lowering switching losses and EMI in high-frequency choppers and motor drives. S02 is optimal for 20–100 kHz operation; S05 suits cost-sensitive, lower-frequency applications.
Can VS-85HFLR10S02M be used in parallel for higher current handling?
VS-85HFLR10S02M is not recommended for direct parallel operation without external balancing-its forward voltage variation (VF max = 1.75 V at 267 A) and thermal coupling differences can cause current imbalance. For >85 A systems, use individual VS-85HFLR10S02M units in separate branches with matched heatsinking and current-sharing inductors. Parallel use requires careful thermal layout and dynamic characterization per application.
What is the I²t rating of VS-85HFLR10S02M and why does it matter?
VS-85HFLR10S02M has an I²t rating of 5523 A²s at t = 8.3 ms (60 Hz) with no voltage reapplied. This value quantifies its ability to survive short-duration overcurrent events-such as motor startup surges or fault currents-without metallurgical failure. Designers use I²t to coordinate upstream fusing and ensure the diode clears faults before fuse interruption, preventing catastrophic thermal runaway.
VS-85HFLR10S02M 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, Reverse Polarity
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 85A
- Voltage - Forward (Vf) (Max) @ If:
- 1.75 V @ 267 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 120 ns
- Current - Reverse Leakage @ Vr:
- -
- 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-85HFLR10S02M FAQ
1.How can I place an order for VS-85HFLR10S02M through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-85HFLR10S02M 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-85HFLR10S02M reliable?
The price and inventory of VS-85HFLR10S02M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-85HFLR10S02M is usually 5 days.
3.What payment methods are accepted for VS-85HFLR10S02M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-85HFLR10S02M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-85HFLR10S02M?
VS-85HFLR10S02M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-85HFLR10S02M 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-85HFLR10S02M?
For technical support, including VS-85HFLR10S02M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-85HFLR10S02M requirements.
6.How does Aetrix verify that VS-85HFLR10S02M is sourced from the original manufacturer or authorized distributors?
All VS-85HFLR10S02M 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-85HFLR10S02M meets industry standards.
7.What is the process for return or replacement of VS-85HFLR10S02M?
All VS-85HFLR10S02M units undergo pre-shipment inspection (PSI). If there is an issue with VS-85HFLR10S02M, 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-85HFLR10S02M part is unused and in its original packaging.
Return procedure for VS-85HFLR10S02M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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