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Vishay General Semiconductor - Diodes Division VS-36MB120A
- Part No.:
- VS-36MB120A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-Square, D-34
- Datasheet:
-
VS-36MB120A.pdf
- Description:
- BRIDGE RECT 1P 1.2KV 35A D-34
- Quantity:
- Payment:
- Shipping:
Inventory:82
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Product details
Overview
VS-36MB120A from Vishay Semiconductors is a single-phase bridge rectifier with 35 A average forward current, 1200 V maximum repetitive peak reverse voltage (VRRM), and D-34 package featuring electrically insulated case and center-hole mounting. It delivers reliable AC-to-DC conversion in industrial power supplies and motor control input stages.
For engineers reviewing the VS-36MB120A datasheet, VS-36MB120A pinout, VS-36MB120A application, or VS-36MB120A equivalent, key selection criteria include thermal resistance (RthJC = 1.2 K/W), surge current capability (IFSM = 500 A at 60 Hz), and UL E300359 approval for safety-critical deployments.
Technical Context
This device implements a full-wave single-phase bridge configuration using four silicon diodes in a monolithic, encapsulated D-34 housing. Its electrically insulated baseplate enables direct heatsink mounting without isolation hardware, while the 1.2 K/W junction-to-case thermal resistance supports high-power operation up to 150 °C junction temperature.
The VS-36MB120A is rated for 35 A DC output current at 60 °C case temperature under resistive or inductive loads, with forward voltage drop of 1.14 V at 55 A peak and 25 °C. Its I2t rating of 1030 A2s (8.3 ms, no voltage reapplied) defines fusing behavior during short-duration overloads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO | 35 A average forward current at TC = 60 °C - defines continuous DC output capability in rectifier circuits |
| VRRM | 1200 V maximum repetitive peak reverse voltage - sets maximum AC input voltage rating before breakdown |
| RthJC | 1.2 K/W junction-to-case thermal resistance - determines minimum heatsink requirement for thermal management |
| IFSM | 500 A non-repetitive surge current at 60 Hz - supports brief inrush or fault currents without failure |
| VFM | 1.14 V forward voltage drop at IFM = 55 A, TJ = 25 °C - directly impacts conduction loss and efficiency |
| VINS | 2700 V RMS isolation voltage - ensures safe galvanic separation between baseplate and internal circuitry |
| TJ | -55 to +150 °C operating junction temperature range - qualifies for harsh industrial environments |
Pinout & Package
D-34 package: compact, encapsulated, electrically insulated metal baseplate with center mounting hole and three-terminal interface (AC1, AC2, +, –). Terminals support push-on, wrap-around, or solder termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | AC input terminal 1 | One leg of AC input; connects to transformer secondary or line input |
| AC2 | AC input terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| + | Positive DC output | Full-wave rectified positive output node; feeds downstream filter or load |
| – | Negative DC output / common return | Full-wave rectified negative output node; serves as system ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Electrically insulated case | Enables direct mounting to heatsink without additional isolation hardware, reducing BOM count and thermal interface resistance |
| UL E300359 approval | Validates compliance with North American safety standards for industrial equipment use |
| High thermal conductivity package | 1.2 K/W RthJC allows sustained 35 A operation at 60 °C case temperature without derating |
| Three-way terminals | Supports push-on, wrap-around, or solder termination - increases assembly flexibility across production methods |
| Industrial-level qualification | Rated for -55 to +150 °C operation and qualified per industrial reliability standards |
Applications
| Industrial Power Supply Input Stage | Motor Drive Front-End Rectification |
|---|---|
Use Scenario: Converts 3-phase or single-phase AC mains to unregulated DC bus in DIN-rail mounted power supplies. IC Role / Device Role / Timing Role: Single-phase bridge rectifier providing full-wave AC-to-DC conversion at the front end. Use Value: 1200 V VRRM supports 800 V AC line transients; 500 A IFSM withstands capacitor inrush during cold start. | Use Scenario: Rectifies AC input to DC link for variable frequency drives controlling induction motors. IC Role / Device Role / Timing Role: High-current bridge rectifier delivering stable DC bus voltage prior to inverter stage. Use Value: 35 A IO sustains continuous motor load; 1.2 K/W RthJC enables compact heatsink integration in enclosed drive cabinets. |
| Test Equipment AC/DC Conversion | Renewable Energy Inverter Input Stage |
Use Scenario: Provides regulated DC rails for precision analog circuitry in benchtop power analyzers and signal generators. IC Role / Device Role / Timing Role: General-purpose bridge rectifier converting lab-grade AC sources into clean DC supply. Use Value: Low 1.14 V VFM minimizes conduction loss and self-heating, preserving measurement accuracy over extended operation. | Use Scenario: Rectifies generator output in small-scale wind or micro-hydro inverters before MPPT and DC-AC conversion. IC Role / Device Role / Timing Role: Robust front-end rectifier handling variable-frequency, variable-amplitude AC inputs. Use Value: 150 °C TJ max and 1030 A2s I2t rating accommodate intermittent surges and ambient temperature extremes in outdoor installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSKB3612 | Same 35 A / 1200 V rating, but TO-247AC package with isolated tab; RthJC = 1.5 K/W | Requires external insulator for heatsink mounting; less compact than D-34 | Select when existing PCB layout uses TO-247 footprint or when higher creepage/clearance is mandated |
| GBU15J | Lower 15 A rating, 600 V VRRM, GBU package; RthJC = 2.5 K/W | Not suitable for 1200 V systems or >20 A continuous loads | Consider only for cost-sensitive, low-power auxiliary supplies where voltage/current margins allow |
Compared with VSKB3612 and GBU15J, the VS-36MB120A provides superior thermal performance (1.2 K/W vs. 1.5/2.5 K/W) and full 1200 V capability in a space-efficient D-34 package, making it optimal for high-density industrial rectification where isolation and power density are critical.
Availability
VS-36MB120A is available at Aetrix Electronics and suitable for industrial power supplies, motor drives, test equipment, and renewable energy inverters requiring stable component supply and long-term lifecycle support.
Supply support for VS-36MB120A 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 qualification.
The VS-MB series was developed specifically for high-efficiency, high-reliability AC/DC front-end rectification in industrial and instrumentation systems where thermal performance, electrical isolation, and safety certification are mandatory.
FAQ
What is the maximum case temperature for continuous operation of the VS-36MB120A?
The VS-36MB120A supports continuous operation at a maximum case temperature (TC) of 60 °C when delivering its rated 35 A average forward current under resistive or inductive load conditions. Exceeding this temperature requires current derating per the datasheet's derating curves, as thermal limits are defined by the 1.2 K/W junction-to-case resistance and 150 °C maximum junction temperature.
Does the VS-36MB120A require an insulating pad when mounted to a heatsink?
No, the VS-36MB120A does not require an insulating pad because its D-34 package features an electrically insulated metal baseplate rated for 2700 V RMS isolation. This design allows direct mounting to grounded heatsinks without compromising safety or electrical integrity, simplifying thermal management and reducing assembly steps.
What is the forward voltage drop specification for the VS-36MB120A at rated current?
The VS-36MB120A has a maximum forward voltage drop (VFM) of 1.14 V at 55 A peak forward current and 25 °C junction temperature. This value reflects conduction loss under transient conditions; actual steady-state drop at 35 A average current is lower and varies with temperature and load profile.
Is the VS-36MB120A certified for safety standards applicable in North America?
Yes, the VS-36MB120A is UL E300359 approved, confirming compliance with U.S. and Canadian safety requirements for industrial electronic equipment. This certification covers construction, insulation, flammability, and dielectric strength, enabling use in UL-listed end products without additional component-level safety evaluation.
Can the VS-36MB120A be used in capacitive-load applications?
Yes, the VS-36MB120A supports capacitive-load operation with a derated average forward current of 28 A at 60 °C case temperature. This reflects increased stress from high inrush currents during capacitor charging; designers must verify total power loss and thermal margin using the device's I2t and thermal resistance data.
VS-36MB120A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 4-Square, D-34
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single 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-34
VS-36MB120A FAQ
1.How can I place an order for VS-36MB120A through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-36MB120A 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-36MB120A reliable?
The price and inventory of VS-36MB120A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-36MB120A is usually 5 days.
3.What payment methods are accepted for VS-36MB120A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-36MB120A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-36MB120A?
VS-36MB120A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-36MB120A 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-36MB120A?
For technical support, including VS-36MB120A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-36MB120A requirements.
6.How does Aetrix verify that VS-36MB120A is sourced from the original manufacturer or authorized distributors?
All VS-36MB120A 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-36MB120A meets industry standards.
7.What is the process for return or replacement of VS-36MB120A?
All VS-36MB120A units undergo pre-shipment inspection (PSI). If there is an issue with VS-36MB120A, 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-36MB120A part is unused and in its original packaging.
Return procedure for VS-36MB120A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-36MB120A Tags
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HDS10M-13
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CD-MBL106S
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MB10S-13
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CD-MBL210S
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BAS3007ARPPE6327HTSA1
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DF02M
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CD-MBL210SL
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DF04M
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DF01M
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