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Vishay General Semiconductor - Diodes Division VS-36MT120
- Part No.:
- VS-36MT120
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 5-Square, D-63
- Datasheet:
-
VS-36MT120.pdf
- Description:
- BRIDGE RECT 3P 1.2KV 35A D-63
- Quantity:
- Payment:
- Shipping:
Inventory:42
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Product details
Overview
VS-36MT120 from Vishay Semiconductors is a three-phase bridge rectifier with 35 A average output current, 1200 V maximum repetitive peak reverse voltage (VRRM), and D-63 package with electrically insulated case. It delivers reliable AC-to-DC conversion in industrial motor drives, UPS systems, and welding equipment where high surge tolerance and thermal robustness are required.
For engineers reviewing the VS-36MT120 datasheet, VS-36MT120 pinout, VS-36MT120 application, or VS-36MT120 equivalent, key selection criteria include its 475 A non-repetitive surge rating at 50 Hz, 1.35 K/W junction-to-case thermal resistance, UL E300359 approval, and compatibility with Pb-free soldering at 260–275 °C.
Technical Context
This device integrates six silicon diodes in a single-phase-input, three-phase-output bridge configuration optimized for line-frequency rectification. Its design supports 120° conduction angle operation and features dual-level forward voltage characteristics (VF(TO)1 = 0.86 V, VF(TO)2 = 1.03 V) with low dynamic resistances (rt1 = 6.3 mΩ, rt2 = 5.0 mΩ) to minimize conduction loss across load ranges.
The D-63 package enables direct heatsink mounting via M4 screw (2.0 Nm torque) and provides 2700 V RMS isolation between terminals and case. Thermal performance is validated under DC and pulsed conditions, with I²t fusing ratings of 1130 A²s (10 ms, no voltage reapplied) and RthJC = 1.35 K/W at steady state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO | 35 A average DC output current at TC = 60 °C - defines continuous power handling capability under real heatsink conditions |
| VRRM | 1200 V maximum repetitive peak reverse voltage - ensures safe blocking during 3-phase line transients up to 1200 V |
| IFSM | 475 A peak non-repetitive surge current (50 Hz, 10 ms) - supports short-term overload in motor startup or fault recovery |
| RthJC | 1.35 K/W junction-to-case thermal resistance - enables efficient heat transfer to external heatsink for sustained 35 A operation |
| VF | 1.19 V maximum forward voltage drop at TJ = 25 °C, IFM = 40 A per junction - directly determines conduction loss and thermal rise |
| IRRM | 100 µA maximum DC reverse current at rated VRRM and TJ = 25 °C - confirms low leakage for stable voltage hold-off |
| VINS | 2700 V RMS isolation voltage (50 Hz, 1 s) - certifies safety margin for reinforced insulation in industrial enclosures |
Pinout & Package
The VS-36MT120 uses the D-63 package: a compact, molded, electrically insulated case (24 mm × 28.5 mm × 22 mm) with center-mounting hole (Ø5.2 mm), three AC input terminals (AC1, AC2, AC3), and dual DC output terminals (+ and –). Terminals accept push-on, wrap-around, or solder connections and are nickel-plated for Pb-free solder compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Three-phase AC input phase A | One of three symmetrical AC inputs; shares common cathode/anode node with other phases inside bridge |
| AC2 | Three-phase AC input phase B | Second AC input terminal; identical electrical role and rating as AC1 and AC3 |
| AC3 | Three-phase AC input phase C | Third AC input terminal; completes full-wave three-phase rectification path |
| + | DC output anode (positive) | Common anode node of three upper diodes; connects to load positive rail or capacitor bank |
| – | DC output cathode (negative) | Common cathode node of three lower diodes; serves as return path and reference ground for output |
Key Features
| Feature | Design Value |
|---|---|
| Universal 3-way terminals | Supports push-on, wrap-around, and solder termination - simplifies assembly across manual, semi-auto, and automated production lines |
| Electrically insulated case | Enables direct mounting to grounded heatsinks without isolation hardware - reduces system BOM and thermal interface complexity |
| UL E300359 approval | Validates compliance with UL/CSA safety standards for industrial end-equipment - accelerates regulatory certification cycles |
| Pb-free solder compatibility | Rated for SAC305 reflow at 260–275 °C - ensures reliability in modern RoHS-compliant manufacturing processes |
| High power/volume ratio | Delivers 35 A / 1200 V in 24 × 28.5 × 22 mm footprint - maximizes power density in space-constrained industrial enclosures |
Applications
| Industrial Motor Drives | Uninterruptible Power Supplies (UPS) |
|---|---|
|
Use Scenario: Three-phase AC input rectification in variable-frequency drive front-ends feeding IGBT inverters. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion stage providing stable DC bus voltage for downstream inverter stage. Use Value: 475 A surge rating handles motor inrush; 1.35 K/W RthJC sustains 35 A output with minimal heatsink size. |
Use Scenario: Line-powered rectification in double-conversion online UPS systems with battery backup. IC Role / Device Role / Timing Role: High-efficiency, high-reliability bridge rectifier converting utility AC to regulated DC for inverter and charger stages. Use Value: 1200 V VRRM accommodates 400 VAC nominal input with margin; 2700 V isolation meets safety requirements for redundant power paths. |
| Welding Equipment | Industrial Power Supplies |
|
Use Scenario: High-current rectification in arc welding power sources requiring rapid current ramp-up and thermal resilience. IC Role / Device Role / Timing Role: Main rectifier delivering pulsed DC output to welding transformer primary winding. Use Value: 1130 A²s I²t rating withstands repeated short-duration surges; low VF minimizes voltage drop during high-duty-cycle operation. |
Use Scenario: General-purpose three-phase rectification in programmable DC power supplies for test and automation. IC Role / Device Role / Timing Role: Core rectification element establishing clean, ripple-controlled DC bus for regulation and filtering. Use Value: Compact D-63 package fits modular chassis designs; UL E300359 approval supports CE/UKCA marking for OEM power modules. |
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 |
|---|---|---|---|
| VSKD36/12 | Same 35 A / 1200 V rating, but TO-247-3L package with isolated tab; higher RthJC = 1.7 K/W | Requires separate insulator when mounted to heatsink; less compact than D-63 | Select when legacy TO-247 footprint compatibility is required over thermal or space optimization |
| GBPC3512 | 35 A / 1200 V, but GBPC package (larger, non-insulated); RthJC = 1.5 K/W; no UL approval | Needs external isolation hardware; lacks safety certification for industrial mains-connected gear | Choose only for cost-sensitive, non-certified internal subsystems where insulation and approvals are not mandated |
Compared with VSKD36/12 and GBPC3512, the VS-36MT120 offers superior thermal efficiency (1.35 K/W), integrated electrical isolation, and UL E300359 listing - making it the preferred choice for certified, space-constrained, high-reliability three-phase rectification.
Availability
VS-36MT120 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and welding equipment requiring stable component supply, long-lifecycle support, and traceable sourcing from authorized channels.
Supply support for VS-36MT120 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 reliability, power handling, and industrial-grade qualification.
The VS-36MT120 belongs to Vishay's VS-36MT.. series of encapsulated three-phase bridge rectifiers, engineered for general-purpose and instrumentation applications demanding compact size, high surge immunity, and certified safety compliance.
FAQ
What is the maximum case temperature for continuous operation of the VS-36MT120?
The VS-36MT120 supports continuous operation with a maximum case temperature (TC) of 60 °C, as specified in its major ratings table. This limit ensures the junction remains within its -55 to +150 °C operating range while delivering 35 A average output current. Exceeding 60 °C requires derating per the current vs. case temperature curve in Figure 6 of the datasheet. The VS-36MT120 must be mounted to a heatsink using an M4 screw at 2.0 Nm torque to maintain thermal integrity.
Does the VS-36MT120 require external insulation when mounted to a metal heatsink?
No, the VS-36MT120 does not require external insulation when mounted to a metal heatsink because its D-63 package features an electrically insulated case. The molded housing provides 2700 V RMS isolation between all terminals and the case surface, enabling direct attachment to grounded heatsinks. This eliminates the need for mica washers or silicone pads, reducing thermal resistance and assembly steps. The VS-36MT120's insulation is validated per UL E300359.
What is the forward voltage behavior of the VS-36MT120 under varying load conditions?
The VS-36MT120 exhibits dual-level forward voltage characteristics: VF(TO)1 = 0.86 V and rt1 = 6.3 mΩ for low-to-moderate currents (16.7% × π × IF(AV) < I < π × IF(AV)), and VF(TO)2 = 1.03 V and rt2 = 5.0 mΩ for higher currents (I > π × IF(AV)). This results in a measured VFM of 1.19 V at 40 A peak per junction and 25 °C. These values are confirmed in the "Forward Conduction" section of the datasheet and define conduction loss across the operating range of the VS-36MT120.
Can the VS-36MT120 be used in 60 Hz applications requiring high surge current?
Yes, the VS-36MT120 is rated for 500 A peak non-repetitive forward current at 60 Hz (t = 8.3 ms) with no voltage reapplied and initial TJ = 150 °C. This exceeds typical 60 Hz surge demands in motor drives and UPS systems. Its I²t rating is 1030 A²s under the same conditions, confirming robustness against short-duration line faults. The VS-36MT120's surge capability is explicitly validated in the "Major Ratings and Characteristics" table and Figure 9.
Is the VS-36MT120 compatible with lead-free reflow soldering processes?
Yes, the VS-36MT120 is fully compatible with lead-free reflow soldering using Sn/Ag/Cu (SAC305) alloy. Its nickel-plated terminals are qualified for soldering at temperatures between 260 °C and 275 °C, as stated in the "Features" section of the datasheet. This ensures reliable joint formation without compromising terminal integrity or insulation performance. The VS-36MT120 meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard handling prior to assembly.
VS-36MT120 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 5-Square, D-63
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1.2 kV
- Current - Average Rectified (Io):
- 35 A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- D-63
VS-36MT120 FAQ
1.How can I place an order for VS-36MT120 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-36MT120 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-36MT120 reliable?
The price and inventory of VS-36MT120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-36MT120 is usually 5 days.
3.What payment methods are accepted for VS-36MT120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-36MT120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-36MT120?
VS-36MT120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-36MT120 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-36MT120?
For technical support, including VS-36MT120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-36MT120 requirements.
6.How does Aetrix verify that VS-36MT120 is sourced from the original manufacturer or authorized distributors?
All VS-36MT120 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-36MT120 meets industry standards.
7.What is the process for return or replacement of VS-36MT120?
All VS-36MT120 units undergo pre-shipment inspection (PSI). If there is an issue with VS-36MT120, 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-36MT120 part is unused and in its original packaging.
Return procedure for VS-36MT120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-36MT120 Tags
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HDS10M-13
Diodes Incorporated
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CD-MBL106S
Bourns Inc.
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MB10S-13
Diodes Incorporated
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CD-MBL206SL
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MB4S-TP
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MB6S-TP
Micro Commercial Co
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CD-MBL210S
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BAS3007ARPPE6327HTSA1
Infineon Technologies
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DF02M
Diodes Incorporated
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CD-MBL210SL
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DF04M
Diodes Incorporated
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DF01M
Diodes Incorporated
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