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Taiwan Semiconductor Corporation MBR1545CT
- Part No.:
- MBR1545CT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR1545CT.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,097
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Product details
Overview
MBR1545CT from Taiwan Semiconductor is a 15A dual-die Schottky barrier rectifier in TO-220AB package, rated for 45V repetitive peak reverse voltage (VRRM), 150A surge current (IFSM), and maximum junction temperature of 150°C. It delivers low forward voltage drop (0.84V at 15A/25°C) and low reverse leakage (500µA at 45V/25°C), enabling high-efficiency operation in DC–DC converters and switching power supplies.
For engineers reviewing the MBR1545CT datasheet, MBR1545CT pinout, MBR1545CT application, or MBR1545CT equivalent, key selection criteria include its dual-diode configuration, TO-220AB thermal performance (RθJC = 1.5°C/W), AEC-Q101 qualification option, and verified 45V VRRM rating - all critical for automotive-grade SMPS and industrial adapter designs.
Technical Context
The MBR1545CT integrates two independent Schottky diodes in a single TO-220AB package with common cathode configuration. Its guard ring structure provides overvoltage protection, and it supports high dv/dt (10,000 V/μs) to withstand fast-switching transients in high-frequency converters.
Thermally, it features low junction-to-case resistance (1.5°C/W) and is rated for continuous operation from –55°C to +150°C. The matte tin-plated leads meet J-STD-002 solderability standards, and the molding compound complies with UL 94V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum reverse blocking voltage per diode; defines safe operating range in 48V-input SMPS topologies |
| IF | 15 A - Continuous average forward current per diode; supports high-current output rails without parallel devices |
| IFSM | 150 A - Non-repetitive surge current capability; handles inrush and transient overload without failure |
| VF @ 15A/25°C | 0.84 V - Low conduction loss per diode; reduces power dissipation and improves system efficiency |
| IR @ 45V/25°C | 500 µA - Low reverse leakage; minimizes standby power loss in always-on circuits |
| RθJC | 1.5 °C/W - Efficient heat transfer to heatsink; enables compact thermal design with standard mounting torque (0.56 N·m) |
| TJ max | 150 °C - High junction temperature rating; supports operation in under-hood or enclosed industrial environments |
Pinout & Package
Package: TO-220AB, 3-terminal case with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, 1.88g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first Schottky diode | Connects to input/high-side node in dual-output or center-tap rectification |
| Pin 2 (Cathode) | Common cathode terminal | Electrically tied to metal tab; must be electrically isolated from heatsink unless referenced to system ground |
| Pin 3 (Anode 2) | Anode of second Schottky diode | Enables independent control or dual-path rectification; supports full-wave or dual-output configurations |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Enhances ruggedness against voltage transients without external snubbers in 48V automotive systems |
| AEC-Q101 qualified version available | Validated for automotive power electronics including engine control modules and ADAS power supplies |
| Low VF at high current (0.72V @ 15A/125°C) | Maintains efficiency across full industrial temperature range, reducing thermal runaway risk |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and environmental compliance requirements for global OEM production |
| High dv/dt immunity (10,000 V/μs) | Stable operation in fast-switching GaN/SiC-based converters without false triggering or breakdown |
Applications
| Automotive DC–DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: Step-down conversion from 48V battery rail to 12V/5V subsystems in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous rectification in interleaved buck stages. Use Value: 0.84V VF at 15A lowers conduction loss by >30% vs. silicon diodes, directly improving converter efficiency and thermal margin. | Use Scenario: Secondary-side rectification in 500W open-frame industrial SMPS with forced-air cooling. IC Role / Device Role / Timing Role: High-current output rectifier handling continuous 15A load with minimal heatsink area. Use Value: RθJC = 1.5°C/W allows direct mounting to chassis, eliminating dedicated heatsinks and reducing BOM cost. |
| USB-C PD Adapters | Telecom Power Modules |
Use Scenario: Dual-output rectification (5V + 20V) in compact 65W USB-C power adapters. IC Role / Device Role / Timing Role: Common-cathode dual diode enabling independent voltage regulation on two outputs. Use Value: Shared cathode simplifies PCB layout and reduces trace inductance, improving EMI performance at 100–300kHz switching frequencies. | Use Scenario: -48V telecom rectifier module supplying redundant 3.3V/5V logic rails. IC Role / Device Role / Timing Role: High-reliability output rectifier with 150A IFSM tolerance for hot-swap and lightning surge events. Use Value: Guard ring and 10,000 V/μs dv/dt rating prevent failure during line-induced transients per GR-1089-CORE. |
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-MBR1545CT | Identical VRRM (45V), IF (15A), TO-220AB package; VF slightly higher (0.87V @ 15A/25°C) | No AEC-Q101 variant offered; limited automotive qualification documentation | Preferred for cost-sensitive industrial designs where AEC-Q101 is not required |
| ON Semiconductor MBR1545CTG | Same electrical specs and TO-220AB mechanical outline; Pb-free and halogen-free compliant | Not AEC-Q101 qualified; different marking and date code format | Suitable for RoHS-only consumer/industrial programs requiring alternate supply chain |
Compared with VS-MBR1545CT and MBR1545CTG, the Taiwan Semiconductor MBR1545CT offers verified AEC-Q101 qualification, lower typical VF (0.84V), and tighter IR specification (500µA), making it the preferred choice for automotive and high-reliability industrial power stages where thermal and surge robustness are prioritized.
Availability
MBR1545CT is available at Aetrix Electronics and suitable for automotive DC–DC converters, industrial SMPS outputs, and USB-C PD adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant alternatives.
Supply support for MBR1545CT 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 discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and computing markets since 1979.
The MBR1545CT belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in harsh-environment applications including automotive infotainment, body electronics, and industrial motor drives.
FAQ
What is the pin configuration of the MBR1545CT?
The MBR1545CT uses a TO-220AB package with three terminals: Pin 1 is Anode 1, Pin 2 is the common cathode (connected to the metal tab), and Pin 3 is Anode 2. This dual-anode/common-cathode arrangement supports full-wave or dual-output rectification. Polarity is marked on the device body, and the tab must be electrically isolated unless referenced to system ground. The MBR1545CT datasheet confirms this configuration in the mechanical drawings and marking diagram.
Is the MBR1545CT AEC-Q101 qualified?
The base MBR1545CT is not automatically AEC-Q101 qualified; however, the AEC-Q101-qualified version is available as MBR1545CTH (with "H" suffix). This variant undergoes stress testing per AEC-Q101 Rev D, including HTGB, HTRB, and temperature cycling. For automotive applications requiring qualification, specify MBR1545CTH - the MBR1545CT itself shares identical electrical and thermal specs but lacks formal automotive certification documentation.
What is the maximum junction temperature rating for the MBR1545CT?
The MBR1545CT has a maximum junction temperature (TJ max) of +150°C, as specified in the Absolute Maximum Ratings table. This rating applies across the full operating ambient range (–55°C to +150°C storage) and enables reliable operation in under-hood automotive environments or enclosed industrial enclosures. Derating curves in the MBR1545CT datasheet show usable current drops linearly above 100°C case temperature, supporting thermal design up to the 150°C limit.
How does the forward voltage of the MBR1545CT compare at different temperatures?
The MBR1545CT exhibits a negative temperature coefficient for forward voltage: VF = 0.84V at 15A and 25°C, dropping to 0.72V at 15A and 125°C. This behavior reduces conduction loss at elevated temperatures, improving thermal stability in high-power-density designs. The MBR1545CT datasheet provides VF vs. IF curves at 25°C, 75°C, and 125°C, confirming consistent performance across its rated junction range.
Can the MBR1545CT replace the MBR1535CT in an existing design?
Yes, the MBR1545CT can directly replace the MBR1535CT in most designs because both share identical package (TO-220AB), pinout, thermal characteristics (RθJC = 1.5°C/W), and forward current rating (15A). The only difference is VRRM: 45V for MBR1545CT vs. 35V for MBR1535CT. This higher blocking voltage provides additional margin against voltage spikes, making the MBR1545CT a robust upgrade - provided the original design does not rely on the lower VRRM for specific clamping behavior.
MBR1545CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- 840 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR1545CT FAQ
1.How can I place an order for MBR1545CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1545CT 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 MBR1545CT reliable?
The price and inventory of MBR1545CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1545CT is usually 5 days.
3.What payment methods are accepted for MBR1545CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1545CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1545CT?
MBR1545CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1545CT 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 MBR1545CT?
For technical support, including MBR1545CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1545CT requirements.
6.How does Aetrix verify that MBR1545CT is sourced from the original manufacturer or authorized distributors?
All MBR1545CT 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 MBR1545CT meets industry standards.
7.What is the process for return or replacement of MBR1545CT?
All MBR1545CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR1545CT, 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 MBR1545CT part is unused and in its original packaging.
Return procedure for MBR1545CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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