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Vishay General Semiconductor - Diodes Division VS-90MT120KPBF
- Part No.:
- VS-90MT120KPBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- MT-K Module
- Datasheet:
-
VS-90MT120KPBF.pdf
- Description:
- BRIDGE RECT 3P 1.2KV 90A MT-K
- Quantity:
- Payment:
- Shipping:
Inventory:5,660
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Product details
Overview
VS-90MT120KPBF from Vishay Semiconductors is a three-phase bridge rectifier module rated for 90 A average output current and 1200 V repetitive peak reverse voltage (VRRM), housed in an electrically insulated MTK package with 4000 VRMS isolation. It delivers reliable AC-to-DC conversion in industrial motor drives, UPS systems, and welding equipment under continuous 120° conduction.
For engineers reviewing the VS-90MT120KPBF datasheet, VS-90MT120KPBF pinout, VS-90MT120KPBF application, or VS-90MT120KPBF equivalent, key selection criteria include thermal resistance (RthJC = 0.21 °C/W per module), surge capability (IFSM = 770 A at 10 ms), forward voltage drop (VFM = 1.6 V at 150 A), and UL E78996 certification for safety-critical power conversion.
Technical Context
This device integrates six high-efficiency silicon diodes in a compact, encapsulated three-phase full-wave bridge configuration. Its MTK package provides electrical isolation between terminals and heatsink, enabling direct mounting without additional insulation hardware.
Designed for industrial-grade reliability, it operates across -40 °C to +150 °C junction temperature range and supports both 50 Hz and 60 Hz line frequencies. The low RthJC (0.21 °C/W) and high I²t rating (3000 A²s) ensure robust thermal management and short-circuit survivability in heavy-duty rectification applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO (DC Output Current) | 90 A at 120° conduction angle, TC = 90 °C - defines continuous load-handling capacity in motor drive DC bus stages |
| VRRM (Peak Reverse Voltage) | 1200 V - enables use with 690 VAC three-phase mains after derating, suitable for industrial 400–690 VAC systems |
| IFSM (Surge Current) | 770 A (10 ms, 50 Hz, no voltage reapplied) - withstands inrush and fault currents in UPS and welder input stages |
| RthJC (Junction-to-Case) | 0.21 °C/W per module - allows efficient heat transfer to heatsink, supporting >200 W total power loss at TJ = 150 °C |
| VISOL (Isolation Voltage) | 4000 VRMS - meets reinforced insulation requirements for Class I industrial equipment per UL E78996 |
| VFM (Forward Voltage) | 1.6 V at Ipk = 150 A, TJ = 25 °C - determines conduction loss and thermal loading in high-current rectifier bridges |
| I²√t (Fusing Integral) | 30 000 A²√s - quantifies energy withstand for fast transient overcurrent protection coordination |
Pinout & Package
The VS-90MT120KPBF uses the MTK package: a 94 mm × 75 mm × 38 mm insulated metal-base module with screw-mount terminals (M5), Fast-on tabs (2.8 × 0.8 mm), and integrated thermal interface surface. Outline conforms to industry-standard INT-A-PAK footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| + | Positive DC Output | Common anode connection point for all three upper diodes; carries full DC output current to load/bus |
| - | Negative DC Output | Common cathode connection point for all three lower diodes; returns DC current to source side |
| ~A, ~B, ~C | AC Input Terminals | Three-phase AC inputs (U/V/W); each connects to one upper and one lower diode pair for full-wave rectification |
Key Features
| Feature | Design Value |
|---|---|
| Electrically insulated case | Enables direct heatsink mounting without insulating washers, reducing thermal interface resistance and assembly complexity |
| UL E78996 approval | Validates compliance with industrial safety standards for reinforced insulation and creepage/clearance distances |
| High power-volume ratio | Delivers 90 A/1200 V performance in 94 × 75 × 38 mm footprint-optimized for space-constrained industrial enclosures |
| Industry-standard INT-A-PAK compatibility | Allows drop-in replacement of legacy modules and simplifies mechanical design reuse across product generations |
| Low RthJC (0.21 °C/W) | Reduces junction temperature rise by ~19 °C per 100 W vs. comparable modules with RthJC > 0.26 °C/W |
Applications
| Industrial Motor Drives | Uninterruptible Power Supplies (UPS) |
|---|---|
Use Scenario: AC-to-DC front-end rectification in variable frequency drives feeding 30–75 kW induction motors. IC Role / Device Role / Timing Role: Three-phase bridge rectifier converting 400–690 VAC mains to stable DC bus voltage. Use Value: High IFSM (770 A) and low VFM (1.6 V) minimize conduction loss and improve efficiency during motor startup surges. | Use Scenario: Input rectification stage in online double-conversion UPS systems handling 20–50 kVA loads. IC Role / Device Role / Timing Role: Primary AC/DC conversion element providing regulated DC bus for inverter and battery charging circuits. Use Value: 4000 VRMS isolation and UL E78996 certification ensure safety compliance in redundant, mission-critical backup power systems. |
| Industrial Welding Equipment | Renewable Energy Inverters |
Use Scenario: High-current DC supply generation in IGBT-based arc welding inverters operating at 500–1000 A output. IC Role / Device Role / Timing Role: Rectifier bridge supplying bulk DC to inverter stage; subjected to repeated high-current pulses and thermal cycling. Use Value: Robust I²t (3000 A²s) and wide Tj range (-40 to +150 °C) ensure long-term reliability under harsh cyclic loading. | Use Scenario: Grid-tie inverter front-end in solar PV or wind turbine converters interfacing medium-voltage AC grids. IC Role / Device Role / Timing Role: Three-phase AC input rectifier feeding DC link capacitor bank prior to H-bridge inversion. Use Value: 1200 V VRRM supports 690 VAC grid interfaces with margin; low RthJC enables passive cooling in outdoor-rated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSKD91-16 | 1600 V VRRM, 90 A IO, TO-247-3L discrete diode module - higher voltage rating but no integrated isolation | Requires external insulator and heatsink interface; less compact than MTK package | Select when >1200 V reverse blocking is required and board-level isolation can be managed externally |
| IXYS MDA90-16N1 | 1600 V VRRM, 90 A IO, isolated M6 module - similar footprint but higher RthJC (0.25 °C/W) | Slightly lower thermal performance; same UL recognition but different mounting torque spec (5.5 Nm) | Choose if existing heatsink layout accommodates M6 pattern and 1600 V margin is critical for future-proofing |
Compared with VS-90MT120KPBF, VSKD91-16 offers higher voltage headroom but demands added insulation design effort, while MDA90-16N1 matches voltage rating but trades 0.04 °C/W higher thermal resistance-impacting maximum ambient temperature capability in thermally constrained systems.
Availability
VS-90MT120KPBF is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, welding equipment, and renewable energy inverters requiring stable component supply and long-lifecycle support.
Supply support for VS-90MT120KPBF 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, power modules, and passive devices for industrial, automotive, and computing applications.
The VS-90MT120KPBF belongs to Vishay's MTK-series three-phase bridge rectifier family, engineered for high-reliability AC/DC conversion in demanding industrial environments where thermal stability, electrical isolation, and surge resilience are critical.
FAQ
What is the maximum junction temperature rating for the VS-90MT120KPBF?
The VS-90MT120KPBF has a maximum junction operating temperature of +150 °C and a storage temperature range of -40 °C to +150 °C. This rating is validated per Vishay's qualification standards for industrial-level reliability and ensures stable operation in high-ambient environments such as enclosed motor control cabinets or outdoor power converters where heatsink temperatures may exceed 90 °C.
Does the VS-90MT120KPBF require external insulation when mounted to a heatsink?
No, the VS-90MT120KPBF does not require external insulation when mounted to a heatsink. Its MTK package features an electrically insulated base that provides 4000 VRMS isolation between terminals and heatsink surface. This eliminates the need for mica washers or silicone pads, simplifying thermal interface design and improving long-term thermal contact reliability in industrial installations.
What is the forward voltage drop specification for the VS-90MT120KPBF at rated current?
The VS-90MT120KPBF has a maximum forward voltage drop (VFM) of 1.6 V at Ipk = 150 A and TJ = 25 °C, measured with a 400 μs pulse. At 90 A DC output under 120° conduction, typical VFM is ~1.35 V. This value directly determines conduction losses-e.g., ~121 W total loss at 90 A-and informs heatsink sizing and system efficiency calculations.
Is the VS-90MT120KPBF RoHS-compliant and lead-free?
Yes, the VS-90MT120KPBF is RoHS-compliant and lead-free, as indicated by the "PbF" suffix in its part number. It meets EU Directive 2011/65/EU and Vishay's material categorization standard (Document #99912), with full traceability documentation available upon request for compliance validation in regulated industrial and medical applications.
What mounting torque is recommended for the VS-90MT120KPBF screws?
The recommended mounting torque for the VS-90MT120KPBF's M5 screws is 4 to 6 Nm when attaching to a heatsink. Vishay specifies using lubricated threads and a mounting compound, with torque rechecked after 3 hours to accommodate compound spreading. Proper torque ensures optimal thermal contact without warping the insulated base or compromising electrical isolation integrity.
VS-90MT120KPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- MT-K Module
- Packaging:
- Tray
- Product Status:
- Active
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1.2 kV
- Current - Average Rectified (Io):
- 90 A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Current - Reverse Leakage @ Vr:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- MT-K
VS-90MT120KPBF FAQ
1.How can I place an order for VS-90MT120KPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-90MT120KPBF 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-90MT120KPBF reliable?
The price and inventory of VS-90MT120KPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-90MT120KPBF is usually 5 days.
3.What payment methods are accepted for VS-90MT120KPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-90MT120KPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-90MT120KPBF?
VS-90MT120KPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-90MT120KPBF 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-90MT120KPBF?
For technical support, including VS-90MT120KPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-90MT120KPBF requirements.
6.How does Aetrix verify that VS-90MT120KPBF is sourced from the original manufacturer or authorized distributors?
All VS-90MT120KPBF 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-90MT120KPBF meets industry standards.
7.What is the process for return or replacement of VS-90MT120KPBF?
All VS-90MT120KPBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-90MT120KPBF, 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-90MT120KPBF part is unused and in its original packaging.
Return procedure for VS-90MT120KPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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