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Vishay General Semiconductor - Diodes Division VS-80PF120W
- Part No.:
- VS-80PF120W
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-203AB, DO-5, Stud
- Datasheet:
-
VS-80PF120W.pdf
- Description:
- DIODE GEN PURP 1.2KV 80A DO203AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,943
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Product details
Overview
VS-80PF120W from Vishay Semiconductors is a standard recovery power diode in DO-5 (DO-203AB) stud-mount package, rated for 80 A average forward current at 140 °C case temperature, 1200 V maximum repetitive peak reverse voltage, and 1570 A non-repetitive surge current at 60 Hz. It serves as a high-current rectifier in industrial welding equipment and heavy-duty DC power supplies.
For engineers reviewing the VS-80PF120W datasheet, VS-80PF120W pinout, VS-80PF120W application, or VS-80PF120W equivalent, key selection criteria include thermal resistance (RthJC = 0.30 K/W), low forward voltage drop (VFM = 1.40 V at 220 A), surge robustness (I²t = 10 230 A²s at 60 Hz), and wire-terminal mechanical interface compatibility with holed heatsinks.
Technical Context
This diode operates as a single-element, unidirectional rectifier with stud-anode polarity (R suffix) and wire-terminal configuration (W suffix). Its thermal design centers on low junction-to-case resistance (0.30 K/W DC) and controlled mounting torque (3.2–4.2 N·m depending on lubrication and tightening point).
Electrical behavior is defined by its standard recovery profile: VF(TO) = 0.73 V and rf = 3.0 mΩ at maximum junction temperature, enabling predictable conduction loss modeling across conduction angles from 30° to 180°, with derated current capability per thermal impedance curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 80 A at TC = 140 °C - defines continuous DC or half-sine conduction limit with mandatory heatsink cooling |
| VRRM | 1200 V - maximum repetitive reverse voltage; sets minimum isolation margin in 1000 V DC bus applications |
| IFSM (60 Hz) | 1570 A - surge rating for short-circuit protection coordination in welder primary rectification |
| I²t (60 Hz) | 10 230 A²s - fusing energy threshold used to size upstream fast-acting fuses |
| RthJC | 0.30 K/W - enables 24 W dissipation at 7.2 K ΔT; requires flat, greased mounting surface |
| VFM | 1.40 V at Ipk = 220 A, TJ = 25 °C - measured forward drop under pulsed overload, not steady-state |
| TJ Range | −55 to +180 °C - supports operation in sealed industrial enclosures without active air cooling |
Pinout & Package
VS-80PF120W uses a DO-5 (DO-203AB) stud-mount package with wire terminals. The anode is connected to the stud (R = reverse polarity), and the cathode is brought out via insulated wire lead. Mounting requires 1/4"-28-UNF-2A threaded stud with torque limited to 3.2 N·m (lubricated) or 4.2 N·m (non-lubricated) applied only to the hexagon, not plastic cap.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode Stud | Main anode connection | Threaded metal stud (1/4"-28-UNF-2A) serves as both electrical terminal and mechanical mount; must be torqued to heatsink |
| Cathode Wire | Main cathode connection | Insulated wire lead (blue sleeve per Vishay polarity coding) - routed away from stud to avoid shorting during assembly |
Key Features
| Feature | Design Value |
|---|---|
| Stud-anode reverse polarity (R) | Enables direct mounting to grounded chassis or heatsink while keeping cathode at system output potential |
| Wire-terminal configuration (W) | Eliminates need for pass-through holes in heatsink; simplifies mechanical integration in space-constrained welder cabinets |
| Low RthJC (0.30 K/W) | Reduces thermal bottleneck between junction and heatsink, allowing higher ambient operation without forced air |
| High I²t rating (10 230 A²s) | Supports coordination with Class T or J fuses in high-inertia motor drive input stages |
| 180 °C max junction temperature | Permits sustained operation in sealed enclosures up to 95 °C ambient when properly heatsinked |
Applications
| Industrial Welding Power Supplies | DC Motor Drive Input Rectifiers |
|---|---|
Use Scenario: Primary-side rectification in 3-phase 600 V AC-fed resistance spot welders with high peak current demands. IC Role / Device Role / Timing Role: Standard recovery diode conducting full half-sine cycles; no switching timing role. Use Value: 1570 A surge rating withstands repeated short-circuit weld pulses; 0.30 K/W RthJC maintains <180 °C junction under 80 A RMS load. |
Use Scenario: Input bridge rectification for 400 V DC bus in 75 kW variable-frequency drives powering conveyor systems. IC Role / Device Role / Timing Role: Uncontrolled rectifier converting AC line to DC bus; operates at line frequency with 180° conduction. Use Value: 1200 V VRRM provides 2× safety margin over 560 V peak line voltage; wire terminals simplify busbar routing. |
| High-Current Battery Chargers | Machine Tool DC Power Modules |
Use Scenario: Secondary-side rectification in 120 V DC, 500 A battery chargers for forklift fleets. IC Role / Device Role / Timing Role: High-current freewheeling and rectification element in phase-controlled SCR+diode hybrid topologies. Use Value: 80 A IF(AV) rating supports continuous charging duty cycle; stud-mount enables direct attachment to liquid-cooled cold plates. |
Use Scenario: DC link rectification in CNC machine spindle drive power modules requiring >60 A continuous output. IC Role / Device Role / Timing Role: Line-frequency rectifier feeding regulated DC supply for servo amplifier stages. Use Value: −55 to +180 °C TJ range accommodates unventilated cabinet mounting; 10 230 A²s I²t allows fuseless protection in some configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSKY12012 | 1200 V, 80 A, TO-247AC package; faster recovery (trr ≈ 2.5 μs vs. standard >10 μs); RthJC = 0.45 K/W | Lower EMI in switched-mode PFC stages; unsuitable for pure line-frequency rectification due to higher conduction loss | Select VS-80PF120W for cost-sensitive, high-surge, stud-mounted industrial rectification; choose VSKY12012 only if trr-driven EMI reduction is required and thermal margin permits higher RthJC |
| IXYS DSEI30-12A | 1200 V, 30 A average rating; TO-247 package; ultrafast recovery (trr = 35 ns); RthJC = 0.55 K/W | Designed for high-frequency inverters; insufficient IF(AV) for 80 A continuous use without parallel devices | VS-80PF120W is not interchangeable with DSEI30-12A due to 2.7× lower current rating and incompatible mounting; use only as functional alternative in lower-current designs where stud mount is unnecessary |
Compared with VSKY12012 and DSEI30-12A, VS-80PF120W uniquely combines stud-mount mechanical integration, 80 A thermal rating, and standard recovery behavior optimized for line-frequency industrial rectification-not high-frequency switching-making it irreplaceable in welding and heavy-duty charger platforms without redesign.
Availability
VS-80PF120W is available at Aetrix Electronics and suitable for industrial welding power supplies, DC motor drive input rectifiers, and high-current battery chargers requiring stable component supply, long-life mechanical reliability, and traceable sourcing for OEM production programs.
Supply support for VS-80PF120W 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with emphasis on high-reliability industrial and automotive-grade devices.
VS-80PF120W belongs to Vishay's VS-80PF(R)...(W) Series of standard recovery power diodes engineered for high-current, high-surge industrial rectification where thermal robustness and mechanical mounting simplicity are critical.
FAQ
What is the mounting torque specification for VS-80PF120W?
The recommended mounting torque for VS-80PF120W is 3.2 N·m (28 lbf·in) for lubricated threads tightened on the hexagon, or 4.2 N·m (37 lbf·in) for non-lubricated threads. Torque must be applied only to the hexagon-not the plastic cap-to prevent damage and ensure proper thermal contact to the heatsink.
Does VS-80PF120W have reverse polarity configuration?
Yes, VS-80PF120W features reverse polarity (R suffix): the anode is connected to the stud, and the cathode is brought out via the insulated wire lead. This configuration allows direct mounting to a grounded heatsink while maintaining cathode at the positive DC output potential in conventional rectifier layouts.
What is the maximum allowable case temperature for VS-80PF120W at 80 A average forward current?
The maximum allowable case temperature for VS-80PF120W at 80 A average forward current is 140 °C, as specified in the major ratings table. Operation above this temperature requires derating per the conduction angle derating curves in the datasheet to prevent exceeding the 180 °C maximum junction temperature.
Can VS-80PF120W be used in parallel with other diodes for higher current handling?
VS-80PF120W is not characterized for forced current sharing in parallel configurations. Its forward voltage characteristics (VF(TO) = 0.73 V, rf = 3.0 mΩ) are not matched across units, and thermal coupling differences between stud-mounted units can cause imbalance. Parallel use requires external ballasting resistors or active current-sharing circuits.
What does the "W" suffix indicate in VS-80PF120W?
The "W" suffix in VS-80PF120W denotes wire-terminal configuration: the cathode is accessed via an insulated wire lead instead of a second stud. This eliminates the need for pass-through holes in the heatsink and simplifies wiring in compact industrial enclosures such as welder control cabinets.
VS-80PF120W 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):
- 1200 V
- Current - Average Rectified (Io):
- 80A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 220 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Stud Mount
- Supplier Device Package:
- DO-203AB (DO-5)
- Operating Temperature - Junction:
- -55°C ~ 180°C
VS-80PF120W FAQ
1.How can I place an order for VS-80PF120W through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-80PF120W 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-80PF120W reliable?
The price and inventory of VS-80PF120W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-80PF120W is usually 5 days.
3.What payment methods are accepted for VS-80PF120W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-80PF120W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-80PF120W?
VS-80PF120W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-80PF120W 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-80PF120W?
For technical support, including VS-80PF120W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-80PF120W requirements.
6.How does Aetrix verify that VS-80PF120W is sourced from the original manufacturer or authorized distributors?
All VS-80PF120W 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-80PF120W meets industry standards.
7.What is the process for return or replacement of VS-80PF120W?
All VS-80PF120W units undergo pre-shipment inspection (PSI). If there is an issue with VS-80PF120W, 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-80PF120W part is unused and in its original packaging.
Return procedure for VS-80PF120W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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