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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Vishay General Semiconductor - Diodes Division VS-36MB20A

Name: VS-36MB20A
Brand: Vishay General Semiconductor - Diodes Division
SKU: VS-36MB20A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VS-36MB20A

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Bridge Rectifiers

Package:: 4-Square, D-34

Datasheet:: VS-36MB20A.pdf

Description:: BRIDGE RECT 1PHASE 200V 35A D-34

Quantity:: RFQ Add To RFQ list

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Inventory:88

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Product details

Overview

VS-36MB20A from Vishay Semiconductors is a single-phase bridge rectifier with 35 A average forward current, 200 V maximum repetitive peak reverse voltage (V_RRM), and D-34 package featuring electrically insulated case and center-hole mounting. It delivers reliable AC-to-DC conversion in industrial power supplies and instrumentation front-ends where thermal robustness and UL E300359 compliance are required.

For engineers reviewing the VS-36MB20A datasheet, VS-36MB20A pinout, VS-36MB20A application, or VS-36MB20A equivalent, key selection criteria include its 35 A I_O at T_C = 60 °C, 475 A I_FSM (60 Hz), 1.2 K/W R_thJC, and compatibility with Pb-free soldering at 260–275 °C using SAC305 alloy.

Technical Context

This device implements a full-wave single-phase bridge configuration with four silicon diodes integrated into an epoxy-encapsulated D-34 package. Its electrically insulated metal baseplate enables direct heatsink mounting without isolation hardware while maintaining 2700 V RMS isolation voltage.

The VS-36MB20A operates across -55 °C to +150 °C junction temperature range and exhibits low forward voltage drop: V_FM = 1.14 V at I_FM = 55 A_pk, T_J = 25 °C, with forward slope resistances rt1 = 5.8 mΩ and rt2 = 4.5 mΩ at maximum junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
I_O	35 A average forward current at T_C = 60 °C - defines continuous DC output capability under heatsink-cooled conditions
V_RRM	200 V maximum repetitive peak reverse voltage - sets maximum AC input voltage rating before breakdown
I_FSM	500 A peak non-repetitive surge current (60 Hz, t = 8.3 ms) - determines short-circuit withstand capability
R_thJC	1.2 K/W junction-to-case thermal resistance - enables precise heatsink sizing for thermal management
V_FM	1.14 V forward voltage drop at 55 A_pk, 25 °C - directly impacts conduction loss and efficiency in power stage
V_INS	2700 V RMS isolation voltage (50 Hz, 1 s) - ensures safety-compliant insulation between baseplate and internal circuitry
T_J Range	-55 °C to +150 °C operating junction temperature - supports deployment in harsh industrial environments

Pinout & Package

D-34 package: compact, rectangular, epoxy-encapsulated module with electrically insulated metal baseplate, center mounting hole (M4), and three-terminal AC input (±) plus DC output (+/−) configuration. Dimensions: 28.5 × 20.3 × 12.7 mm (L × W × H).

Pin/Terminal	Circuit Role	Design Meaning
AC1 / AC2	AC Input Terminals	Accept bidirectional AC line input; internally connected to opposite diode anodes/cathodes to form full-wave bridge
+	DC Positive Output	Rectified positive DC output node; connects to load/anode of downstream filter capacitor
−	DC Negative Output	Rectified negative DC output node; serves as return path and system ground reference point

Key Features

Feature	Design Value
Electrically insulated case	Enables direct mounting to heatsink without additional insulating washers, reducing thermal interface resistance by ~0.2 K/W
UL E300359 approval	Confirms compliance with UL 60747-1 for component-level safety in end equipment certification
Three-way termination	Supports push-on, wrap-around, or solder connections - increases board assembly flexibility and field-serviceability
Pb-free solder compatible	Rated for reflow with Sn/Ag/Cu (SAC305) at 260–275 °C - meets RoHS and JEDEC J-STD-020 requirements
Industrial qualification	Specified and tested across -55 °C to +150 °C, supporting use in motor drives, UPS, and industrial SMPS

Applications

AC/DC Power Supply Front-End	Industrial Motor Drive Input Stage
Use Scenario: Converts 100–240 VAC 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 with high surge tolerance. Use Value: 500 A I_FSM handles inrush currents during cold-start; 1.2 K/W R_thJC enables compact heatsinking in space-constrained enclosures.	Use Scenario: Rectifies AC line input prior to DC link capacitor in 3 kW–5 kW variable frequency drives. IC Role / Device Role / Timing Role: High-current bridge rectifier delivering stable DC bus voltage under dynamic load transients. Use Value: 35 A I_O sustains continuous operation at 60 °C case temperature; 2700 V isolation ensures safety in grounded-drive architectures.
Test & Measurement Instrumentation	Uninterruptible Power Supply (UPS)
Use Scenario: Provides regulated DC rails for precision analog front-ends and microcontroller subsystems in benchtop multimeters. IC Role / Device Role / Timing Role: Low-noise, thermally stable rectification stage minimizing ripple-induced measurement error. Use Value: Tight V_F matching (0.79 V threshold, 4.5 mΩ slope) ensures predictable conduction loss and thermal drift over temperature.	Use Scenario: Converts utility AC to DC bus during normal operation and supports battery charging circuits in line-interactive UPS units. IC Role / Device Role / Timing Role: Robust bridge rectifier handling both steady-state and transient overload conditions during transfer events. Use Value: UL E300359 approval simplifies end-equipment safety certification; center-hole mounting ensures mechanical stability during vibration-prone backup operation.

AC/DC Power Supply Front-End

Industrial Motor Drive Input Stage

Use Scenario: Converts 100–240 VAC 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 with high surge tolerance.

Use Value: 500 A I_FSM handles inrush currents during cold-start; 1.2 K/W R_thJC enables compact heatsinking in space-constrained enclosures.

Use Scenario: Rectifies AC line input prior to DC link capacitor in 3 kW–5 kW variable frequency drives.

IC Role / Device Role / Timing Role: High-current bridge rectifier delivering stable DC bus voltage under dynamic load transients.

Use Value: 35 A I_O sustains continuous operation at 60 °C case temperature; 2700 V isolation ensures safety in grounded-drive architectures.

Test & Measurement Instrumentation

Uninterruptible Power Supply (UPS)

Use Scenario: Provides regulated DC rails for precision analog front-ends and microcontroller subsystems in benchtop multimeters.

IC Role / Device Role / Timing Role: Low-noise, thermally stable rectification stage minimizing ripple-induced measurement error.

Use Value: Tight V_F matching (0.79 V threshold, 4.5 mΩ slope) ensures predictable conduction loss and thermal drift over temperature.

Use Scenario: Converts utility AC to DC bus during normal operation and supports battery charging circuits in line-interactive UPS units.

IC Role / Device Role / Timing Role: Robust bridge rectifier handling both steady-state and transient overload conditions during transfer events.

Use Value: UL E300359 approval simplifies end-equipment safety certification; center-hole mounting ensures mechanical stability during vibration-prone backup operation.

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
VSKB360	35 A I_O, 600 V V_RRM, TO-247AC package, no baseplate isolation	Requires external insulator for heatsink mounting; higher R_thJC (1.5 K/W)	Choose when higher voltage rating is needed and isolation can be added externally
GBU35J	35 A I_O, 600 V V_RRM, GBU package, 1.4 K/W R_thJC, no UL approval	Lacks UL E300359 certification; lower surge rating (420 A I_FSM)	Choose for cost-sensitive consumer-grade designs where UL certification is not mandated

Compared with VSKB360 and GBU35J, the VS-36MB20A provides superior thermal performance (1.2 K/W), built-in electrical isolation, and UL safety approval - making it preferred for industrial and certified power systems where reliability and regulatory compliance are critical.

Availability

VS-36MB20A is available at Aetrix Electronics and suitable for industrial motor drives, AC/DC power supplies, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for VS-36MB20A 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-handling capability.

The VS-MB Series was designed specifically for high-current, thermally demanding industrial rectification applications - prioritizing low thermal resistance, electrical isolation, and robust surge immunity in compact D-34 packaging.

FAQ

What is the maximum allowable case temperature for continuous operation of the VS-36MB20A?

The VS-36MB20A is rated for 35 A average forward current at a case temperature (T_C) of 60 °C. Operation above this temperature requires derating per the current vs. temperature curves in the datasheet. Exceeding 60 °C without adjustment risks exceeding the 150 °C maximum junction temperature and premature failure. Thermal design must ensure the baseplate remains at or below 60 °C under full load.

Does the VS-36MB20A require an insulating pad when mounted to a heatsink?

No, the VS-36MB20A does not require an insulating pad because its metal baseplate is electrically isolated from internal circuitry, with 2700 V RMS isolation voltage verified per UL E300359. This allows direct mounting to grounded heatsinks while maintaining safety clearance - eliminating thermal interface layers that would increase R_thCS and reduce cooling efficiency.

What is the peak non-repetitive surge current rating for the VS-36MB20A at 60 Hz?

The VS-36MB20A has a peak non-repetitive surge current rating of 500 A at 60 Hz (t = 8.3 ms) with no voltage reapplied, and 420 A under the same duration when rated V_RRM is reapplied after the surge. These values reflect its ability to withstand brief overcurrent events such as capacitor charging inrush or short-circuit transients in industrial power systems.

Is the VS-36MB20A compatible with lead-free reflow soldering processes?

Yes, the VS-36MB20A is fully compatible with lead-free reflow soldering using Sn/Ag/Cu (SAC305) alloy. Its terminals are nickel-plated and qualified for peak solder temperatures of 260–275 °C, meeting JEDEC J-STD-020 moisture sensitivity and thermal profile requirements for surface-mount assembly.

How does the forward voltage drop of the VS-36MB20A compare to the VS-26MB20A?

The VS-36MB20A has a maximum forward voltage drop (V_FM) of 1.14 V at 55 A_pk and 25 °C, versus 1.11 V for the VS-26MB20A at 40 A_pk. While the VS-36MB20A's V_FM is slightly higher, its lower forward slope resistance (rt2 = 4.5 mΩ vs. 5.0 mΩ) results in better conduction efficiency at higher currents - a trade-off optimized for its 35 A rating.

VS-36MB20A 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):: 200 V

Current - Average Rectified (Io):: 35 A

Voltage - Forward (Vf) (Max) @ If:: -

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: QC Terminal

Supplier Device Package:: D-34

VS-36MB20A FAQ

1.How can I place an order for VS-36MB20A through Aetrix?

Please submit a Request for Quotation (RFQ) for VS-36MB20A 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-36MB20A reliable?

The price and inventory of VS-36MB20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-36MB20A is usually 5 days.

3.What payment methods are accepted for VS-36MB20A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-36MB20A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VS-36MB20A?

VS-36MB20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VS-36MB20A 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-36MB20A?

For technical support, including VS-36MB20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-36MB20A requirements.

6.How does Aetrix verify that VS-36MB20A is sourced from the original manufacturer or authorized distributors?

All VS-36MB20A 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-36MB20A meets industry standards.

7.What is the process for return or replacement of VS-36MB20A?

All VS-36MB20A units undergo pre-shipment inspection (PSI). If there is an issue with VS-36MB20A, 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-36MB20A part is unused and in its original packaging.

Return procedure for VS-36MB20A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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