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Vishay General Semiconductor - Diodes Division VS-36MB140A
- Part No.:
- VS-36MB140A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-Square, D-34
- Datasheet:
-
VS-36MB140A.pdf
- Description:
- BRIDGE RECT 1P 1.4KV 35A D-34
- Quantity:
- Payment:
- Shipping:
Inventory:9
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Product details
Overview
VS-36MB140A from Vishay Semiconductors is a single-phase bridge rectifier rated for 35 A average forward current and 1400 V maximum repetitive peak reverse voltage in a D-34 insulated package. It delivers high thermal conductivity, UL E300359 approval, and supports industrial power supplies requiring robust surge handling (500 A @ 60 Hz) and low forward voltage drop (1.3 V at 55 A peak).
For engineers reviewing the VS-36MB140A datasheet, VS-36MB140A pinout, VS-36MB140A application, or VS-36MB140A equivalent, key selection factors include its 1.35 K/W junction-to-case thermal resistance, 2700 V RMS isolation voltage, and compatibility with Pb-free soldering (SAC305, 260–275 °C).
Technical Context
This device implements a full-wave single-phase bridge configuration using four silicon diodes in a compact, electrically insulated D-34 package with center-hole mounting. Its design targets high-voltage AC/DC conversion where thermal management and electrical isolation are critical.
It operates across -55 °C to +150 °C junction temperature, supports both resistive/inductive (35 A) and capacitive (28 A) loads, and features dual-level forward voltage characteristics (VF(TO)1 = 0.74 V, VF(TO)2 = 0.79 V) with corresponding slope resistances (rt1 = 5.5 mΩ, rt2 = 5.2 mΩ) at max TJ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO (Avg) | 35 A - Sustained DC output current at 55 °C case temperature under resistive/inductive load |
| VRRM | 1400 V - Maximum repetitive reverse voltage per diode; defines safe AC input voltage ceiling (≈990 V RMS) |
| IFSM (60 Hz) | 500 A - Non-repetitive surge current capability without damage; enables robust inrush handling |
| RthJC | 1.35 K/W - Low thermal resistance from junction to case; allows efficient heatsink coupling for high-power operation |
| VFM | 1.3 V - Measured forward voltage at 55 A peak, 25 °C; determines conduction loss in high-current rectification |
| IRRM | 10 µA - Max reverse leakage per diode at 25 °C and VRRM; ensures minimal standby power loss |
| Visol | 2700 V RMS - Isolation voltage between baseplate and terminals; meets safety requirements for Class I equipment |
Pinout & Package
The VS-36MB140A uses the D-34 package: an insulated, rectangular metal-base module with center mounting hole, push-on/wrap-around/solder terminals, and nickel-plated leads compatible with SAC305 solder (260–275 °C).
| 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 single-phase AC path into bridge |
| + | Positive DC output | Full-wave rectified positive output node; supplies filtered DC bus |
| - | Negative DC output | Full-wave rectified negative output node; return path for DC load |
Key Features
| Feature | Design Value |
|---|---|
| Electrically insulated case | Enables direct mounting to grounded heatsinks without isolation hardware, reducing system BOM and assembly cost |
| UL E300359 approval | Validates compliance with UL/CSA safety standards for end-equipment certification in North America |
| Three-terminal interface options | Supports push-on, wrap-around, or solder termination-enabling flexible assembly across prototyping and volume production |
| High power/volume ratio | D-34 footprint (28.5 × 20.3 mm) delivers 35 A/1400 V in <20 g mass, optimizing space-constrained industrial enclosures |
| Pb-free solder compatibility | Rated for SAC305 reflow (260–275 °C), aligning with RoHS-compliant manufacturing without derating |
Applications
| Industrial AC/DC Power Supplies | Motor Drive Front-End Rectifiers |
|---|---|
Use Scenario: Converting 380–480 VAC three-phase line (via step-down transformer) to ~540 VDC bus in factory automation systems. IC Role / Device Role / Timing Role: Single-phase bridge rectifier providing isolated, high-current DC input to bulk capacitor stage. Use Value: 1400 V VRRM withstands transient overvoltages; 500 A IFSM handles motor startup surges without failure. | Use Scenario: Rectifying AC from variable-frequency drive (VFD) control transformers feeding IGBT gate drivers and logic rails. IC Role / Device Role / Timing Role: High-isolation (2700 V RMS) bridge supplying clean, stable DC to auxiliary power modules. Use Value: Electrically insulated D-34 package eliminates need for insulating washers, simplifying heatsink integration and improving thermal reliability. |
| Uninterruptible Power Supply (UPS) Input Stages | Test Equipment AC Line Interfaces |
Use Scenario: Conditioning utility AC input in online double-conversion UPS units before battery charging and inverter stages. IC Role / Device Role / Timing Role: Primary rectification element converting 230 VAC input to ~325 VDC, supporting bidirectional energy flow during battery recharge. Use Value: 35 A IO rating sustains continuous load during brownout conditions; low RthJC (1.35 K/W) prevents thermal runaway during extended overload. | Use Scenario: AC mains interface in programmable AC source analyzers and automated test fixtures requiring precise input conditioning. IC Role / Device Role / Timing Role: Isolated, high-fidelity rectifier front-end ensuring measurement integrity and operator safety. Use Value: UL E300359 listing and 2700 V RMS isolation meet CAT II/III safety requirements for benchtop instrumentation. |
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 |
|---|---|---|---|
| Vishay VS-36MB160A | Same D-34 package and 35 A IO rating, but higher 1600 V VRRM and 500 A IFSM (60 Hz) | Required where input transients exceed 1400 V or system safety margin demands >160 V headroom above nominal line | Select VS-36MB160A when operating near 480 VAC distribution with high lightning-induced surge risk |
| IXYS MBR35140CT | TO-247 package, 35 A IO, 1400 V VRRM, but no baseplate isolation (requires insulator) and higher RthJC (2.0 K/W) | Suitable only where mechanical mounting permits insulator use and thermal budget allows +0.65 K/W penalty | Choose MBR35140CT only if existing PCB layout accommodates TO-247 footprint and heatsink design includes isolation hardware |
Compared with VS-36MB140A, VS-36MB160A offers higher voltage margin without thermal or footprint trade-offs, while MBR35140CT requires added isolation hardware and delivers inferior thermal performance-making VS-36MB140A optimal for insulated, space-constrained, thermally demanding industrial rectification.
Availability
VS-36MB140A is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front-ends, and uninterruptible power supply (UPS) input stages requiring stable component supply, long lifecycle support, and certified safety compliance.
Supply support for VS-36MB140A 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, precision, and power efficiency.
The VS-MB High Voltage Series targets industrial and consumer-grade AC/DC conversion, delivering compact, insulated bridge rectifiers optimized for thermal performance, safety certification, and high-surge resilience in harsh environments.
FAQ
What is the maximum allowable case temperature for continuous operation of the VS-36MB140A?
The VS-36MB140A has a maximum case temperature (TC) of 55 °C for continuous 35 A operation under resistive or inductive load conditions. This limit ensures junction temperature remains within the -55 °C to +150 °C operational range. Exceeding 55 °C requires derating per the current ratings curve in Figure 6 of the datasheet. The VS-36MB140A must be mounted to an adequately sized heatsink with thermal interface material to maintain this TC.
Does the VS-36MB140A support lead-free soldering processes?
Yes, the VS-36MB140A features nickel-plated terminals qualified for Pb-free soldering using Sn/Ag/Cu (SAC305) alloy at peak temperatures of 260–275 °C. This is explicitly confirmed in the Vishay datasheet revision 15-Jan-2019. The VS-36MB140A meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow profiles, and no pre-baking is required for typical assembly conditions.
What is the isolation voltage rating of the VS-36MB140A, and how is it tested?
The VS-36MB140A provides 2700 V RMS isolation voltage between its baseplate and all terminals, tested at 50 Hz for 1 second per the Vishay specification. This rating is measured with the baseplate grounded and all terminals shorted together. The VS-36MB140A's electrically insulated D-34 package enables direct mounting to grounded heatsinks without additional insulation, satisfying reinforced insulation requirements for many industrial safety standards.
How does the forward voltage behavior of the VS-36MB140A vary with current and temperature?
The VS-36MB140A exhibits two-region forward conduction: low-level threshold VF(TO)1 = 0.74 V and high-level VF(TO)2 = 0.79 V at TJ = 150 °C, with corresponding slope resistances rt1 = 5.5 mΩ and rt2 = 5.2 mΩ. This dual-slope model reflects real diode physics under varying current density. The VS-36MB140A's VFM is specified as 1.3 V at 55 A peak and 25 °C, rising slightly at elevated temperatures per the Fig. 7 characteristic curves.
Can the VS-36MB140A be used in capacitive-input filter applications?
Yes, the VS-36MB140A supports capacitive-input filters with a derated average forward current of 28 A (vs. 35 A for resistive/inductive loads), as specified in the "Forward Conduction" table. This derating accounts for higher peak currents and associated thermal stress. The VS-36MB140A's I²t rating of 1030 A²s (60 Hz) and low RthJC (1.35 K/W) ensure reliable operation under these conditions when properly heatsinked.
VS-36MB140A 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):
- 1.4 kV
- Current - Average Rectified (Io):
- 35 A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- D-34
VS-36MB140A FAQ
1.How can I place an order for VS-36MB140A through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-36MB140A 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-36MB140A reliable?
The price and inventory of VS-36MB140A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-36MB140A is usually 5 days.
3.What payment methods are accepted for VS-36MB140A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-36MB140A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-36MB140A?
VS-36MB140A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-36MB140A 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-36MB140A?
For technical support, including VS-36MB140A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-36MB140A requirements.
6.How does Aetrix verify that VS-36MB140A is sourced from the original manufacturer or authorized distributors?
All VS-36MB140A 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-36MB140A meets industry standards.
7.What is the process for return or replacement of VS-36MB140A?
All VS-36MB140A units undergo pre-shipment inspection (PSI). If there is an issue with VS-36MB140A, 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-36MB140A part is unused and in its original packaging.
Return procedure for VS-36MB140A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-36MB140A Tags
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DF04M
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