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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Vishay General Semiconductor - Diodes Division MBRB2545CT

Name: MBRB2545CT
Brand: Vishay General Semiconductor - Diodes Division
SKU: MBRB2545CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MBRB2545CT

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Diode Arrays

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: MBRB2545CT.pdf

Description:: DIODE ARR SCHOTT 45V 15A TO263AB

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Product details

Overview

MBRB2545CT from Vishay is a dual common-cathode Schottky rectifier in D2PAK package, rated 2 × 15 A average forward current per leg, 45 V maximum reverse voltage, and 0.73 V forward voltage at 30 A and 125 °C - optimized for high-efficiency DC/DC converters and reverse battery protection circuits.

For engineers reviewing the MBRB2545CT datasheet, MBRB2545CT pinout, MBRB2545CT application, or MBRB2545CT equivalent, key selection criteria include junction temperature capability (–65 to 150 °C), low thermal resistance (1.5 °C/W per leg), and low reverse leakage (40 mA at 125 °C) under high-temperature operation.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode terminal, enabling center-tap configuration for synchronous rectification or dual-path freewheeling. Its proprietary barrier technology ensures stable low-V_F and low I_RM performance up to 150 °C junction temperature.

Designed to Q101 automotive qualification level, it features guard ring structure for ruggedness and high-purity epoxy encapsulation for moisture resistance. Electrical behavior is characterized by 12.3 mΩ forward slope resistance and 700 pF junction capacitance at 5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
IF(AV) per leg	15 A at TC = 130 °C - supports continuous high-current output paths without derating in compact heatsink designs
VRRM	45 V - enables use in 36 V nominal automotive and industrial power rails with margin against transients
VF @ 30 A, 125 °C	0.73 V - reduces conduction loss by ~30 % vs. standard silicon diodes in high-frequency SMPS
IRM @ 125 °C	40 mA - limits standby power loss in reverse-battery protection and OR-ing applications
RthJC per leg	1.5 °C/W - allows direct mounting to PCB copper or small heatsinks for thermal management
dV/dt rating	10,000 V/µs - prevents false turn-on during fast-switching events in synchronous rectifier topologies

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed thermal pad; thermally enhanced for high-power dissipation in space-constrained layouts.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode A)	First anode connection	Input path for first diode leg; routed separately for independent switching control
2 (Cathode)	Common cathode node	Shared return path for both diodes; must be low-inductance connection to minimize voltage overshoot
3 (Anode B)	Second anode connection	Input path for second diode leg; enables dual-channel freewheeling or parallel rectification

Key Features

Feature	Design Value
150 °C TJ operation	Enables reliable deployment in under-hood automotive modules and sealed industrial enclosures without forced air cooling
Guard ring structure	Improves long-term reliability under repetitive avalanche stress and mechanical vibration conditions
Q101 qualification	Validates robustness for automotive powertrain and body electronics applications requiring AEC-Q101 compliance
Low VF slope resistance (12.3 mΩ)	Delivers predictable linear conduction loss across load range, simplifying thermal modeling

Applications

Automotive Reverse Battery Protection	High-Frequency DC/DC Converter Output Rectification
Use Scenario: Prevents damage to vehicle ECUs when battery terminals are accidentally reversed during service or jump-starting. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier configured as back-to-back OR-ing diode with common cathode tied to system ground. Use Value: 45 V VRRM and 40 mA IRM at 125 °C ensure low leakage and safe clamping during sustained reverse polarity exposure.	Use Scenario: Output rectification in 200–500 kHz isolated flyback or forward converters for ADAS camera modules and infotainment supplies. IC Role / Device Role / Timing Role: High-speed switching rectifier replacing slower silicon diodes to reduce switching losses and improve efficiency. Use Value: 0.73 V VF at 125 °C and 10,000 V/µs dV/dt rating prevent spurious conduction during fast voltage transitions.
Industrial Motor Drive Freewheeling	Redundant Power Supply OR-ing
Use Scenario: Freewheeling path for brushed DC motor current during PWM off-time in factory automation actuators. IC Role / Device Role / Timing Role: Dual-leg Schottky clamp providing low-loss recirculation path for inductive kickback energy. Use Value: 1060 A non-repetitive surge rating and 1.5 °C/W RthJC support transient energy absorption without thermal runaway.	Use Scenario: OR-ing two independent 24 V DC power supplies in telecom shelf systems to maintain uptime during single-supply failure. IC Role / Device Role / Timing Role: Common-cathode dual diode enabling independent anode inputs with shared output rail. Use Value: Matched VF characteristics between legs minimize current imbalance and ensure balanced load sharing.

Automotive Reverse Battery Protection

High-Frequency DC/DC Converter Output Rectification

Use Scenario: Prevents damage to vehicle ECUs when battery terminals are accidentally reversed during service or jump-starting.

IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier configured as back-to-back OR-ing diode with common cathode tied to system ground.

Use Value: 45 V VRRM and 40 mA IRM at 125 °C ensure low leakage and safe clamping during sustained reverse polarity exposure.

Use Scenario: Output rectification in 200–500 kHz isolated flyback or forward converters for ADAS camera modules and infotainment supplies.

IC Role / Device Role / Timing Role: High-speed switching rectifier replacing slower silicon diodes to reduce switching losses and improve efficiency.

Use Value: 0.73 V VF at 125 °C and 10,000 V/µs dV/dt rating prevent spurious conduction during fast voltage transitions.

Industrial Motor Drive Freewheeling

Redundant Power Supply OR-ing

Use Scenario: Freewheeling path for brushed DC motor current during PWM off-time in factory automation actuators.

IC Role / Device Role / Timing Role: Dual-leg Schottky clamp providing low-loss recirculation path for inductive kickback energy.

Use Value: 1060 A non-repetitive surge rating and 1.5 °C/W RthJC support transient energy absorption without thermal runaway.

Use Scenario: OR-ing two independent 24 V DC power supplies in telecom shelf systems to maintain uptime during single-supply failure.

IC Role / Device Role / Timing Role: Common-cathode dual diode enabling independent anode inputs with shared output rail.

Use Value: Matched VF characteristics between legs minimize current imbalance and ensure balanced load sharing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS30H45CGY	TO-247 package, 30 A total IF(AV), same 45 V VRRM but higher VF (0.85 V @ 30 A, 125 °C)	Higher thermal mass suits higher ambient environments but requires larger footprint	Preferred where board space permits and higher surge immunity is needed
ON Semiconductor NRVB2545CTT4G	D2PAK package, identical pinout and 45 V rating, but 125 °C max TJ and higher IRM (100 mA @ 125 °C)	Limited to lower-temperature industrial use due to reduced thermal margin	Cost-sensitive alternative where 150 °C operation is not required

Compared with STPS30H45CGY and NRVB2545CTT4G, the MBRB2545CT delivers superior high-temperature stability (150 °C TJ), lower forward voltage, and tighter reverse leakage - making it optimal for automotive and thermally constrained embedded power designs.

Availability

MBRB2545CT is available at Aetrix Electronics and suitable for automotive reverse battery protection, high-frequency DC/DC converter output rectification, and industrial motor drive freewheeling requiring stable component supply and long-lifecycle availability.

Supply support for MBRB2545CT 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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability power devices and sensing solutions.

The MBRB2545CT belongs to Vishay's High Power Products Schottky rectifier family, engineered for automotive-grade efficiency and ruggedness in demanding power conversion and protection applications.

FAQ

What is the maximum junction temperature rating for the MBRB2545CT?

The MBRB2545CT has a maximum junction temperature (T_J) rating of 150 °C, verified per Q101 qualification testing. This allows operation in under-hood automotive environments and sealed industrial enclosures without active cooling. The device maintains stable forward voltage and low reverse leakage up to this limit, and its thermal resistance (R_thJC = 1.5 °C/W per leg) supports effective heat transfer to the PCB or heatsink. Always verify case temperature using the formula T_C = T_J – (P_d + P_dREV) × R_thJC in final layout.

Does the MBRB2545CT support automotive qualification standards?

Yes, the MBRB2545CT is designed and qualified to AEC-Q101 standards for discrete semiconductors. It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and humidity bias HAST - confirming suitability for automotive powertrain, body control, and ADAS applications. The guard ring structure and high-purity epoxy encapsulation further enhance mechanical ruggedness and moisture resistance required in automotive environments. MBRB2545CT meets these requirements as documented in Vishay's qualification report referenced in datasheet 93979.

What is the pin configuration and package type of the MBRB2545CT?

The MBRB2545CT uses a D2PAK (TO-263) surface-mount package with three terminals: Pin 1 (Anode A), Pin 2 (Common Cathode), and Pin 3 (Anode B). The common-cathode topology enables dual-path rectification or OR-ing functionality. The exposed thermal pad on the underside improves thermal performance and must be soldered to a large copper pour. Mechanical dimensions and mounting details are specified in Vishay document 95014. No alternate package variants exist for the MBRB2545CT - only the D2PAK version is offered.

How does the MBRB2545CT compare to the MBRB2535CT in terms of voltage rating and application scope?

The MBRB2545CT has a 45 V maximum reverse voltage (V_RRM), while the MBRB2535CT is rated for 35 V. This 10 V higher rating extends the MBRB2545CT's usability in 36 V nominal automotive systems and industrial 48 V DC rails where transient overvoltage margins are critical. Both share identical thermal, current, and packaging specifications. The MBRB2545CT is preferred for applications requiring headroom above 35 V, such as reverse battery protection in commercial vehicles or 48 V mild-hybrid subsystems - whereas MBRB2535CT suits cost-optimized 24 V systems.

What is the typical reverse leakage current of the MBRB2545CT at elevated temperatures?

The MBRB2545CT specifies a maximum instantaneous reverse current (I_RM) of 40 mA at 125 °C and rated DC reverse voltage. At 25 °C, leakage is ≤0.2 mA. This low, well-characterized leakage supports efficient reverse-battery protection and OR-ing functions where standby power loss must be minimized. The device's proprietary barrier technology stabilizes leakage across temperature, avoiding exponential rise seen in conventional Schottky diodes. Designers should reference Figure 2 in datasheet 93979 for full I_R vs. V_R curves across –65 to 150 °C.

MBRB2545CT Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 45 V

Current - Average Rectified (Io) (per Diode):: 15A

Voltage - Forward (Vf) (Max) @ If:: 820 mV @ 30 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 200 µA @ 45 V

Operating Temperature - Junction:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263AB (D2PAK)

MBRB2545CT FAQ

1.How can I place an order for MBRB2545CT through Aetrix?

Please submit a Request for Quotation (RFQ) for MBRB2545CT 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 MBRB2545CT reliable?

The price and inventory of MBRB2545CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRB2545CT is usually 5 days.

3.What payment methods are accepted for MBRB2545CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRB2545CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MBRB2545CT?

MBRB2545CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MBRB2545CT 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 MBRB2545CT?

For technical support, including MBRB2545CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRB2545CT requirements.

6.How does Aetrix verify that MBRB2545CT is sourced from the original manufacturer or authorized distributors?

All MBRB2545CT 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 MBRB2545CT meets industry standards.

7.What is the process for return or replacement of MBRB2545CT?

All MBRB2545CT units undergo pre-shipment inspection (PSI). If there is an issue with MBRB2545CT, 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 MBRB2545CT part is unused and in its original packaging.

Return procedure for MBRB2545CT:

1.Submit a request within 90 days.

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

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