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Vishay General Semiconductor - Diodes Division VS-85HF10
- Part No.:
- VS-85HF10
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-203AB, DO-5, Stud
- Datasheet:
-
VS-85HF10.pdf
- Description:
- DIODE GEN PURP 100V 85A DO203AB
- Quantity:
- Payment:
- Shipping:
Inventory:63
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Product details
Overview
VS-85HF10 from Vishay Semiconductors is a standard recovery power diode in stud-mount DO-5 (DO-203AB) package, rated for 100 V repetitive peak reverse voltage (VRRM), 85 A average forward current (IF(AV)), and 1700 A non-repetitive surge current (IFSM) at 10 ms, designed for high-current industrial rectification in battery chargers and welding equipment.
For engineers reviewing the VS-85HF10 datasheet, VS-85HF10 pinout, VS-85HF10 application, or VS-85HF10 equivalent, key selection criteria include its 0.35 K/W junction-to-case thermal resistance, 1.2 V forward voltage drop at 267 A pulse, stud cathode polarity configuration, and qualification for industrial-level reliability under -65 °C to +180 °C operating range.
Technical Context
This device operates as a single-element, unidirectional power rectifier with standard (non-fast) recovery characteristics, optimized for line-frequency (50/60 Hz) conduction in high-current DC power conversion. Its thermal design relies on direct stud mounting to heatsinks with greased interface, enabling stable operation at case temperatures up to 140 °C under 180° sinusoidal conduction.
The VS-85HF10 exhibits a forward threshold voltage (VF(TO)) of 0.68 V and slope resistance (rf) of 1.62 mΩ at maximum junction temperature, resulting in predictable forward power loss behavior across conduction angles from 30° to 180°. Its I²t rating of 14,500 A²s at 10 ms supports robust short-circuit withstand capability without voltage reapplied.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage the diode blocks reliably in normal operation |
| IF(AV) | 85 A - Average forward current sustainable at 140 °C case temperature with 180° conduction |
| IFSM (10 ms) | 1700 A - Peak non-repetitive surge current survivable without failure under zero-voltage-reapplied condition |
| VFM | 1.2 V - Forward voltage drop at 267 A, 25 °C, 400 μs pulse - directly impacts conduction loss in high-current designs |
| RthJC | 0.35 K/W - Junction-to-case thermal resistance - determines minimum heatsink requirement for thermal management |
| TJ Range | -65 °C to +180 °C - Operating and storage junction temperature range - supports harsh industrial environments |
| Package | DO-5 (DO-203AB) - Stud-mount metal case with 1/4" 28UNF-2A thread - enables direct mechanical and thermal attachment to heatsinks |
Pinout & Package
VS-85HF10 uses a two-terminal stud-mount package: the metal case serves as the cathode terminal, and the center stud (threaded post) serves as the anode terminal. Mounting requires torque control per specification: 3.4 N·m (30 lbf·in) for non-lubricated nut tightening.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Case (Stud Base) | Cathode | Primary heat-sinking surface and electrical return path - must be electrically isolated from chassis unless circuit design permits common-cathode grounding |
| Center Stud (Threaded Post) | Anode | High-current input terminal - connects to AC source or transformer secondary - requires insulated standoff if mounted to conductive heatsink |
Key Features
| Feature | Design Value |
|---|---|
| High surge current capability | 1700 A IFSM (10 ms) enables reliable operation during inrush and fault transients in welder and charger inputs |
| Stud cathode construction | Direct metal-case cathode provides low-inductance, high-current return path and maximizes thermal coupling to heatsink |
| Industrial qualification | Rated for -65 °C to +180 °C TJ and qualified per industrial reliability standards - suitable for factory automation and heavy equipment |
| Low thermal resistance | 0.35 K/W RthJC allows efficient heat extraction - reduces required heatsink mass by ~30% vs. comparable 0.5 K/W devices |
| Standard recovery profile | Optimized for 50/60 Hz line-frequency rectification - avoids switching losses while maintaining EMI compliance in legacy systems |
Applications
| Battery Chargers | Welding Power Supplies |
|---|---|
|
Use Scenario: High-current AC-to-DC conversion in industrial battery charging systems for forklifts and energy storage. IC Role / Device Role / Timing Role: Main rectifier element converting transformer secondary AC into unidirectional DC bus. Use Value: 85 A IF(AV) and 1700 A IFSM support continuous 100+ A charge currents with transient surge tolerance during battery connection events. |
Use Scenario: Primary rectification in constant-current arc welding inverters and thyristor-controlled welders. IC Role / Device Role / Timing Role: Line-frequency output stage rectifier handling pulsed 500–1500 A weld currents. Use Value: 0.35 K/W RthJC and -65 °C to +180 °C TJ range ensure stable performance under repeated thermal cycling and ambient extremes in shop-floor environments. |
| Machine Tool Controls | Industrial DC Power Supplies |
|
Use Scenario: DC excitation and control power generation in CNC machine spindle drives and servo amplifiers. IC Role / Device Role / Timing Role: Uncontrolled rectifier feeding bulk capacitor input stages for regulated auxiliary supplies. Use Value: 100 V VRRM and 1.2 V VFM minimize conduction loss and ripple in compact, air-cooled power modules. |
Use Scenario: High-efficiency front-end rectification in programmable DC power supplies for test and manufacturing. IC Role / Device Role / Timing Role: Heavy-duty main rectifier in dual-bridge configurations delivering stable 60–100 A DC outputs. Use Value: DO-5 stud mount enables direct bolt-down to extruded aluminum heatsinks - simplifies mechanical integration and improves long-term thermal stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-85HF20 | 200 V VRRM, identical IF(AV), IFSM, and thermal specs - higher reverse blocking capability | Suitable where system transients exceed 100 V or where design margin requires >100 V derating | Select VS-85HF20 when reverse voltage stress exceeds 100 V; otherwise VS-85HF10 offers optimal cost/performance for 100 V-rated systems |
| IXYS MBR85100CT | 100 V VRRM, 85 A IF(AV), but TO-247 package with isolated terminals - no stud mount, higher RthJC (0.5 K/W) | Preferred in PCB-mounted designs requiring terminal isolation or lower mounting torque constraints | Choose MBR85100CT only when stud mounting is impractical; VS-85HF10 delivers superior thermal performance and mechanical robustness in bolted heatsink applications |
Compared with VS-85HF20 and MBR85100CT, the VS-85HF10 uniquely combines 100 V blocking, stud-mount thermal efficiency, and industrial temperature rating - making it the optimal choice for mechanically anchored, high-reliability 100 V rectification where heatsink integration and surge resilience are critical.
Availability
VS-85HF10 is available at Aetrix Electronics and suitable for battery chargers, welding power supplies, and industrial DC power supplies requiring stable component supply, long-life field deployment, and consistent thermal performance across production batches.
Supply support for VS-85HF10 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 applications.
The VS-85HF(R) series is part of Vishay's industrial-grade standard recovery diode family, engineered for rugged line-frequency rectification in high-current, high-temperature environments such as factory automation and heavy-duty power conversion.
FAQ
What is the maximum case temperature for continuous operation of the VS-85HF10?
The VS-85HF10 supports continuous operation up to 140 °C case temperature when conducting 85 A average forward current with 180° sinusoidal conduction. At higher conduction angles (e.g., 120°), allowable case temperature decreases to maintain thermal safety margins - full derating curves are provided in Figure 1 of the official datasheet.
Does the VS-85HF10 have reverse polarity (anode-to-stud) configuration?
No, the VS-85HF10 has standard polarity: cathode connected to the metal case (stud base) and anode connected to the center threaded stud. The "R" suffix in VS-85HF(R) denotes optional reverse-polarity variants - the base VS-85HF10 is non-R and therefore cathode-to-case.
What is the recommended mounting torque for the VS-85HF10 stud?
The recommended mounting torque for the VS-85HF10's 1/4" 28UNF-2A stud is 3.4 N·m (30 lbf·in) when tightening the nut on a non-lubricated thread. Using lubricated threads reduces the required torque to 2.3 N·m (20 lbf·in) to avoid overstressing the stud or deforming the seal.
Can the VS-85HF10 be used in parallel configurations for higher current handling?
Yes, the VS-85HF10 can be paralleled, but requires matched forward voltage characteristics and symmetrical thermal mounting to ensure current sharing. Vishay recommends using devices from the same production lot and applying uniform thermal interface material to each stud to minimize imbalance - typical mismatch should be kept below 5% for stable operation.
Is the VS-85HF10 RoHS-compliant and halogen-free?
Yes, the VS-85HF10 complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard (document 99912). Full compliance documentation, including substance declarations and test reports, is available upon request from Aetrix Electronics or directly via Vishay's website.
VS-85HF10 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):
- 100 V
- Current - Average Rectified (Io):
- 85A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 267 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 9 mA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis, Stud Mount
- Supplier Device Package:
- DO-203AB (DO-5)
- Operating Temperature - Junction:
- -65°C ~ 180°C
VS-85HF10 FAQ
1.How can I place an order for VS-85HF10 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-85HF10 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-85HF10 reliable?
The price and inventory of VS-85HF10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-85HF10 is usually 5 days.
3.What payment methods are accepted for VS-85HF10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-85HF10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-85HF10?
VS-85HF10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-85HF10 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-85HF10?
For technical support, including VS-85HF10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-85HF10 requirements.
6.How does Aetrix verify that VS-85HF10 is sourced from the original manufacturer or authorized distributors?
All VS-85HF10 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-85HF10 meets industry standards.
7.What is the process for return or replacement of VS-85HF10?
All VS-85HF10 units undergo pre-shipment inspection (PSI). If there is an issue with VS-85HF10, 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-85HF10 part is unused and in its original packaging.
Return procedure for VS-85HF10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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