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Vishay General Semiconductor - Diodes Division MBR2045CT-E3/45
- Part No.:
- MBR2045CT-E3/45
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2045CT-E3/45.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO2203
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MBR2045CT-E3/45 from Vishay General Semiconductor is a dual common-cathode Schottky rectifier in ITO-220AB package, rated for 45 V repetitive peak reverse voltage, 20 A total average forward current (10 A per diode), and 150 A peak surge current per diode. It delivers low forward voltage drop (0.57 V at 10 A, 125 °C) and operates up to 150 °C junction temperature, serving as a high-efficiency freewheeling or output rectifier in DC/DC converters.
For engineers reviewing the MBR2045CT-E3/45 datasheet, MBR2045CT-E3/45 pinout, MBR2045CT-E3/45 application, or MBR2045CT-E3/45 equivalent, key selection criteria include its dual common-cathode configuration, 0.57 V VF at 10 A/125 °C, 5.0 °C/W thermal resistance per diode, RoHS-compliant matte tin plating, and suitability for automotive-grade designs when ordered with HE3 suffix.
Technical Context
This device integrates two independent Schottky diodes sharing a common cathode terminal, enabling compact synchronous rectification or dual-path low-loss DC output stages. Its guardring structure provides overvoltage protection, while the ITO-220AB package supports direct heatsink mounting with 10 in-lbs max torque and 1500 VAC isolation between terminals and heatsink.
Designed for high-frequency switching applications, it exhibits fast recovery (no stored charge), low junction capacitance (~100 pF at 4.0 V), and stable reverse leakage (<15 mA at 125 °C, rated VR). Thermal performance is characterized by RθJC = 5.0 °C/W per diode, enabling reliable operation under continuous 10 A per diode loads at TC ≤ 135 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking capability without breakdown; defines usable input/output voltage margin in buck or flyback secondary-side rectification. |
| IF(AV) total | 20 A - Total average forward current rating at TC = 135 °C; enables dual-diode parallel conduction in high-current DC/DC outputs. |
| VF @ 10 A, 125 °C | 0.57 V - Low conduction loss per diode at elevated temperature; reduces power dissipation and improves system efficiency above ambient. |
| IFSM per diode | 150 A - Peak non-repetitive surge current handling (8.3 ms half-sine); withstands inrush and transient overload in power supply startup. |
| RθJC per diode | 5.0 °C/W - Junction-to-case thermal resistance; determines heatsink sizing requirement for sustained 10 A per diode operation. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in sealed or high-ambient industrial environments. |
| Package | ITO-220AB - Insulated TO-220 variant with isolated heatsink tab (1500 VAC isolation); enables safe chassis-mounting without insulating hardware. |
Pinout & Package
Package: ITO-220AB - 3-terminal insulated power package with isolated metal tab (heatsink interface), matte tin-plated leads, UL 94 V-0 molding compound, and 245 °C maximum solder reflow profile (MSL Level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky diode; connects to switched node or transformer secondary winding in flyback/buck topologies. |
| Pin 2 | Anode 2 | Input terminal for second Schottky diode; enables dual-output or redundant rectification paths without shared anode routing. |
| Pin 3 (K) | Common Cathode | Shared output node for both diodes; serves as single low-impedance return path to output capacitor or load ground. |
Key Features
| Feature | Design Value |
|---|---|
| Guardring overvoltage protection | Enhances ruggedness against voltage transients and line surges without external snubbers in 48 V bus or PoE-powered systems. |
| Low VF at high temperature | 0.57 V at 10 A/125 °C ensures minimal conduction loss rise across automotive or industrial temperature ranges. |
| High surge capability | 150 A IFSM per diode supports robust startup in high-capacitance DC/DC outputs without derating. |
| Isolated heatsink interface | 1500 VAC isolation between pins and heatsink allows direct mounting to grounded chassis in AC/DC front-ends or motor drives. |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability and JESD 201 Class 1A whisker resistance requirements for long-term reliability. |
Applications
| DC/DC Converter Output Rectification | Automotive Body Control Module Power Supply |
|---|---|
Use Scenario: High-efficiency 12 V → 3.3 V/5 V point-of-load conversion in telecom or server power supplies. IC Role / Device Role / Timing Role: Dual common-cathode Schottky rectifier providing low-loss synchronous rectification on secondary side. Use Value: 0.57 V forward drop at 10 A/125 °C reduces conduction loss by ~35 % versus standard silicon diodes, improving full-load efficiency. |
Use Scenario: 12 V battery-fed power supply for BCM microcontrollers, CAN transceivers, and LED drivers. IC Role / Device Role / Timing Role: Freewheeling and reverse-polarity protection diode in buck regulator and relay driver circuits. Use Value: AEC-Q101 qualification available via HE3 suffix; 150 °C TJ max supports under-hood operation without thermal throttling. |
| Industrial Motor Drive Snubberless Freewheeling | Polarity Protection in USB-C PD Adapters |
Use Scenario: Freewheeling path for brushed DC motor H-bridge outputs in factory automation controllers. IC Role / Device Role / Timing Role: Dual-anode common-cathode configuration enables independent freewheeling for upper/lower bridge legs. Use Value: 150 A IFSM per diode handles motor stall currents; 5.0 °C/W RθJC allows direct heatsink mounting without thermal interface pads. |
Use Scenario: Input polarity protection in 20 V/3 A USB-C Power Delivery adapters with dual-output rails. IC Role / Device Role / Timing Role: Common-cathode dual diode used in OR-ing configuration to prevent backfeed between VBUS and auxiliary 5 V rail. Use Value: 45 V VRRM safely blocks 20 V PD transients; low VF minimizes insertion loss in compact adapter PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual common-cathode Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045CT | VF = 0.60 V @ 10 A/125 °C; RθJC = 4.5 °C/W; same ITO-220AB package and pinout. | Slightly lower thermal resistance but higher forward voltage; preferred where heatsinking is constrained but efficiency margin is acceptable. | Select STPS2045CT when optimizing for thermal footprint over conduction loss in space-constrained industrial SMPS. |
| ON Semi MURB2045CT | VF = 0.62 V @ 10 A/125 °C; no AEC-Q101 option; RθJC = 5.5 °C/W; identical mechanical outline. | Lacks automotive qualification and has higher thermal resistance; suitable for commercial-grade consumer power supplies only. | Choose MURB2045CT for cost-sensitive, non-automotive applications where AEC-Q101 compliance is not required. |
Compared with MBR2045CT-E3/45, STPS2045CT offers better thermal dissipation but trades 0.03 V higher VF, while MURB2045CT lacks automotive qualification and has reduced surge margin-making MBR2045CT-E3/45 the optimal choice for thermally demanding, AEC-Q101–compliant designs.
Availability
MBR2045CT-E3/45 is available at Aetrix Electronics and suitable for DC/DC converter output rectification, automotive body control module power supplies, and industrial motor drive freewheeling requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for MBR2045CT-E3/45 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 General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for industrial, automotive, and computing markets.
The MBR2045CT-E3/45 belongs to Vishay's MBRF20xxCT family of dual common-cathode Schottky rectifiers, engineered for high-efficiency, high-frequency switching power supplies where low forward voltage and rugged surge capability are critical.
FAQ
What is the maximum junction temperature rating for the MBR2045CT-E3/45?
The MBR2045CT-E3/45 has a maximum junction temperature (TJ) of +150 °C, verified per Vishay's datasheet revision 25-Oct-2023. This rating enables reliable operation in under-hood automotive environments and sealed industrial enclosures. Derating curves confirm 20 A total average forward current is sustainable at case temperatures up to 135 °C. The MBR2045CT-E3/45 must be mounted to a heatsink capable of maintaining TC ≤ 135 °C under worst-case load conditions.
Does the MBR2045CT-E3/45 have AEC-Q101 qualification?
The base MBR2045CT-E3/45 is RoHS-compliant commercial grade; AEC-Q101 qualification is available under the ordering code MBRF2045CTHE3_A/P (ITO-220AB) or MBRB2045CTHM3/I (D2PAK). The MBR2045CT-E3/45 itself is not AEC-Q101 qualified, but shares identical die and construction with the HE3/HM3 variants. For automotive use, specify the HE3 suffix version to ensure qualification documentation and test reports are provided with shipment.
What is the thermal resistance from junction to case for each diode in the MBR2045CT-E3/45?
Each diode in the MBR2045CT-E3/45 has a typical junction-to-case thermal resistance (RθJC) of 5.0 °C/W, measured per diode under standard test conditions. This value applies to the ITO-220AB package with proper heatsink mounting and 10 in-lbs torque. The MBR2045CT-E3/45 requires a heatsink that maintains case temperature ≤ 135 °C to sustain 10 A per diode average current continuously, based on this thermal metric.
How does the forward voltage of the MBR2045CT-E3/45 compare at 25 °C versus 125 °C?
At 10 A, the MBR2045CT-E3/45 exhibits VF = 0.65 V at 25 °C and 0.57 V at 125 °C - a negative temperature coefficient typical of Schottky diodes. This reduction lowers conduction loss at elevated operating temperatures, improving efficiency stability in thermally stressed applications. The MBR2045CT-E3/45 datasheet confirms this behavior across the full 25–125 °C range, with no thermal runaway risk.
What is the isolation voltage rating between terminals and heatsink for the MBR2045CT-E3/45?
The MBR2045CT-E3/45 in ITO-220AB package provides 1500 VAC isolation (1 minute duration) between all electrical terminals and the metal heatsink tab. This rating is specified in the Vishay datasheet and enables safe direct mounting to grounded chassis in AC/DC power supplies and motor drives. The MBR2045CT-E3/45 does not require insulating washers or pads when used within this isolation limit.
MBR2045CT-E3/45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-3
- 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 650 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MBR2045CT-E3/45 FAQ
1.How can I place an order for MBR2045CT-E3/45 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045CT-E3/45 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 MBR2045CT-E3/45 reliable?
The price and inventory of MBR2045CT-E3/45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045CT-E3/45 is usually 5 days.
3.What payment methods are accepted for MBR2045CT-E3/45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045CT-E3/45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045CT-E3/45?
MBR2045CT-E3/45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045CT-E3/45 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 MBR2045CT-E3/45?
For technical support, including MBR2045CT-E3/45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045CT-E3/45 requirements.
6.How does Aetrix verify that MBR2045CT-E3/45 is sourced from the original manufacturer or authorized distributors?
All MBR2045CT-E3/45 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 MBR2045CT-E3/45 meets industry standards.
7.What is the process for return or replacement of MBR2045CT-E3/45?
All MBR2045CT-E3/45 units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045CT-E3/45, 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 MBR2045CT-E3/45 part is unused and in its original packaging.
Return procedure for MBR2045CT-E3/45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR2045CT-E3/45 Tags
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