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Taiwan Semiconductor Corporation MBR2045PT
- Part No.:
- MBR2045PT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
MBR2045PT.pdf
- Description:
- DIODE ARR SCHOTT 45V 20A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,323
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Product details
Overview
MBR2045PT from Taiwan Semiconductor is a 20A, 45V dual-die Schottky barrier rectifier in TO-247AD (TO-3P) package, designed for high-efficiency DC/DC conversion and SMPS output stages with low forward voltage (0.84 V at 20 A, 25°C) and high surge capability (150 A IFSM). It features guard ring overvoltage protection and meets UL 94V-0 flammability rating.
For engineers reviewing the MBR2045PT datasheet, MBR2045PT pinout, MBR2045PT application, or MBR2045PT equivalent, key selection criteria include its 45 V repetitive peak reverse voltage, 150 A surge rating, junction-to-case thermal resistance of 1.0 °C/W, and AEC-Q101 qualification availability - critical for automotive power supply designs requiring reliability under thermal stress and transient conditions.
Technical Context
The MBR2045PT integrates two independent Schottky diodes in a single TO-247AD package, enabling dual-output or parallel-configured rectification without external pairing. Its low VF (0.72 V at 20 A, 125°C) minimizes conduction loss in high-current, high-temperature environments typical of industrial DC/DC converters.
With dV/dt rating of 10,000 V/μs and guard ring structure, the device sustains fast-switching transients without avalanche breakdown. The 1.0 °C/W RθJC supports direct heatsink mounting for thermal management in space-constrained power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating limit in flyback or buck output rectification. |
| IF | 20 A - Continuous average forward current per diode; enables compact 20 A output stage without forced air cooling. |
| IFSM | 150 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients in adapter and SMPS applications. |
| VF @ 20 A, 25°C | 0.84 V - Low conduction loss reduces power dissipation by ~1.7 W vs. silicon diodes at same current, improving system efficiency. |
| RθJC | 1.0 °C/W - Enables predictable thermal design: 20 W dissipation yields only 20°C junction-to-case rise, simplifying heatsink sizing. |
| TJ max | 150 °C - Extended junction temperature range supports operation in sealed enclosures or high-ambient industrial environments. |
| IR @ 45 V, 125°C | 15 mA - Reverse leakage level at rated voltage and elevated temperature; impacts standby power in always-on systems. |
Pinout & Package
Package: TO-247AD (TO-3P), 3-terminal case with isolated tab. Mounting torque ≤1.13 N·m. Matte tin-plated leads, J-STD-002 solderable. Polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first diode | Connects to switching node (e.g., transformer secondary center-tap or buck switch node); must handle full 20 A forward path. |
| Cathode (K) | Common cathode for both diodes | Shared output node; ties both diodes to positive rail - enables dual-anode, single-cathode configuration for center-tapped rectifiers. |
| Anode 2 (A2) | Input terminal for second diode | Independent anode for second diode; allows separate input paths (e.g., dual-winding transformer or interleaved phase). |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die Schottky configuration | Two independent 20 A/45 V diodes in one TO-247AD package - eliminates discrete pairing, reduces PCB area and interconnect inductance. |
| Guard ring overvoltage protection | Prevents premature edge breakdown during fast dV/dt events (10,000 V/μs), enhancing reliability in high-frequency SMPS. |
| AEC-Q101 qualified option (MBR2045PTH) | Validated for automotive-grade temperature cycling, humidity, and mechanical stress - suitable for under-hood DC/DC converters. |
| UL Recognized (E-326243) | Meets safety requirements for end-equipment certification in AC/DC adapters and industrial power supplies. |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with environmental regulations for global OEM production; no brominated flame retardants or antimony trioxide. |
Applications
| Switching Mode Power Supply (SMPS) | Automotive DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 200–500 W server PSUs using center-tapped transformer topology. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing low-loss, high-speed recovery for both transformer halves. Use Value: Reduces conduction loss by >40% vs. fast recovery diodes, lowering thermal load and enabling passive cooling. |
Use Scenario: 12 V to 5 V/3.3 V step-down converter in ADAS camera ECU with ambient temperature up to 105°C. IC Role / Device Role / Timing Role: Output rectifier handling continuous 15 A load with transient surges during sensor activation. Use Value: 150 A IFSM and 150°C TJ max ensure robustness against load dumps and cold-crank pulses. |
| LCD Monitor Power Board | Industrial Adapter |
Use Scenario: +12 V and +5 V dual-rail generation from single transformer secondary in slim-profile LCD monitor. IC Role / Device Role / Timing Role: Dual-diode rectifier delivering independent outputs via common-cathode architecture. Use Value: Shared cathode simplifies layout and reduces component count versus two discrete TO-220 devices. |
Use Scenario: Universal-input 100–240 VAC adapter for PoE-powered access points with 24 V/20 A output. IC Role / Device Role / Timing Role: Primary rectifier in active-clamp forward or LLC resonant converter output stage. Use Value: 0.72 V VF at 125°C maintains efficiency above 90% across full operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20BQ045PBF | Same 20 A / 45 V rating, TO-220AC package (single diode), no dual-die configuration. | Requires two devices for dual-anode use; higher thermal resistance (RθJC = 3.0 °C/W) limits power density. | Select when board space allows discrete placement and lower cost outweighs integration benefit. |
| ON Semiconductor MBR2045CT | 20 A / 45 V dual common-cathode Schottky in TO-220AB; RθJC = 2.5 °C/W; no AEC-Q101 option. | Compatible pinout but lower thermal performance; not qualified for automotive temperature cycling. | Choose for cost-sensitive industrial adapters where AEC-Q101 and ultra-low RθJC are not required. |
Compared with VS-20BQ045PBF and MBR2045CT, the MBR2045PT delivers superior thermal performance (1.0 °C/W), integrated dual-die layout, and optional AEC-Q101 qualification - making it optimal for high-power-density and automotive-grade designs where heatsink interface efficiency and reliability validation are critical.
Availability
MBR2045PT is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and industrial adapters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MBR2045PT 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1995.
The MBR2045PT belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in space- and thermally-constrained applications such as server PSUs and automotive ECUs.
FAQ
What is the maximum junction temperature rating for the MBR2045PT?
The MBR2045PT has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating allows reliable operation in sealed enclosures or high-ambient environments such as automotive under-hood locations. Derating curves confirm usable current capacity down to 125°C case temperature, and the device must be mounted with thermal interface material to maintain this limit in continuous 20 A operation. The MBR2045PT achieves this rating through optimized die metallization and TO-247AD package thermal design.
Does the MBR2045PT have AEC-Q101 qualification?
The base MBR2045PT is not AEC-Q101 qualified, but the variant MBR2045PTH is explicitly listed in the ordering information as AEC-Q101 qualified. This qualification covers temperature cycling, mechanical shock, and humidity testing per AEC standard, making MBR2045PTH suitable for automotive power modules. Designers requiring automotive compliance must specify the "H" suffix version; the MBR2045PT itself does not carry this qualification and should not be used in safety-critical automotive applications without additional validation.
What is the forward voltage drop of the MBR2045PT at full rated current and elevated temperature?
At 20 A forward current and 125°C junction temperature, the MBR2045PT exhibits a typical forward voltage (VF) of 0.72 V, as specified in the electrical characteristics table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects real-world conduction loss in thermally stressed operation. At 25°C, VF is 0.84 V under the same 20 A condition. These values are confirmed across the MBR20xPT family and directly impact thermal design and system efficiency calculations for the MBR2045PT.
How is the pin configuration arranged in the TO-247AD package of the MBR2045PT?
The MBR2045PT uses a 3-pin TO-247AD (TO-3P) package with Anode 1, Cathode (common), and Anode 2 terminals - arranged left-to-right as A1–K–A2 when viewed with marking side up and tab facing away. The metal tab is electrically isolated and serves as a thermal path only. Polarity is marked on the device body per the manufacturer's marking diagram. This configuration supports center-tapped transformer rectification and dual-input topologies without external wiring between cathodes.
What is the reverse leakage current specification for the MBR2045PT at 45 V and 125°C?
At 45 V reverse voltage and 125°C junction temperature, the MBR2045PT has a maximum reverse leakage current (IR) of 15 mA per diode, as stated in the electrical specifications table. This value is measured under pulse test conditions (PW = 30 ms) and represents worst-case leakage under thermal stress. Leakage increases exponentially with temperature, so this parameter critically affects standby power in always-on systems. The MBR2045PT's 15 mA rating is consistent with other 45 V Schottky rectifiers in its class and is validated across production lots.
MBR2045PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
MBR2045PT FAQ
1.How can I place an order for MBR2045PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045PT 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 MBR2045PT reliable?
The price and inventory of MBR2045PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045PT is usually 5 days.
3.What payment methods are accepted for MBR2045PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045PT?
MBR2045PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045PT 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 MBR2045PT?
For technical support, including MBR2045PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045PT requirements.
6.How does Aetrix verify that MBR2045PT is sourced from the original manufacturer or authorized distributors?
All MBR2045PT 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 MBR2045PT meets industry standards.
7.What is the process for return or replacement of MBR2045PT?
All MBR2045PT units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045PT, 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 MBR2045PT part is unused and in its original packaging.
Return procedure for MBR2045PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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