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Taiwan Semiconductor Corporation MBRS1645
- Part No.:
- MBRS1645
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS1645.pdf
- Description:
- 16A, 45V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:7,541
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Product details
Overview
MBRS1645 from Taiwan Semiconductor is a 16A, 45V Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.63 V at 16 A, 25°C) and high surge capability (150 A IFSM). It serves as the primary output rectifier in compact switching power supplies.
For engineers reviewing the MBRS1645 datasheet, MBRS1645 pinout, MBRS1645 application, or MBRS1645 equivalent, key selection criteria include its 45 V repetitive peak reverse voltage, 1.5 °C/W junction-to-case thermal resistance, 150°C maximum junction temperature, and compatibility with automated SMT placement per J-STD-020 Level 1 moisture sensitivity.
Technical Context
The MBRS1645 employs a single-die Schottky structure with guard ring overvoltage protection, enabling fast recovery and minimal switching loss. Its low VF and high IFSM support high-frequency operation in SMPS topologies where conduction efficiency and thermal robustness are critical.
Designed for surface-mount assembly, it features matte tin-plated leads compliant with J-STD-002 solderability and meets JESD 201 Class 2 whisker resistance. The TO-263AB package provides enhanced thermal dissipation versus smaller SMD packages while maintaining compatibility with standard D2PAK footprints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC/DC output stage |
| IF | 16 A - Continuous forward current rating; supports high-power adapter and converter designs |
| IFSM | 150 A - Non-repetitive surge current; withstands startup and transient overload events |
| VF @ 16A, 25°C | 0.63 V - Low conduction loss; reduces heat generation and improves system efficiency |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; enables effective heatsinking via PCB copper pour |
| TJ max | 150 °C - Maximum junction temperature; allows operation in thermally constrained industrial environments |
| IR @ 45V, 25°C | 500 µA - Low leakage current; minimizes standby power loss in energy-sensitive applications |
Pinout & Package
Package: TO-263AB (D2PAK), 3-terminal surface-mount package with exposed cathode tab for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to switch node or transformer secondary; carries full load current into device |
| Cathode (Tab) | Output current terminal & thermal path | Electrically and thermally connected to PCB copper area; serves as main current return and heatsink interface |
| Case / Tab | Common cathode connection | Internally tied to cathode; requires isolation from other potentials unless used as ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances voltage ruggedness and prevents premature edge breakdown under transient overvoltage |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; simplifies manufacturing and reduces process risk |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental regulations for commercial and industrial deployment |
| High surge current capability (150 A) | Supports reliable operation during inrush and fault conditions without degradation |
| Low VF at high temperature (0.57 V @ 16 A, 125°C) | Maintains efficiency across wide ambient range; reduces thermal runaway risk in enclosed systems |
Applications
| Laptop AC/DC Adapter | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side rectification in 65–90 W laptop power adapters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Schottky rectifier replacing conventional diodes to minimize conduction loss and improve efficiency. Use Value: 0.63 V forward drop at 16 A reduces power dissipation by ~30% vs. silicon diodes, lowering thermal design burden. | Use Scenario: Output rectification in isolated 24 V input, 5/12 V output industrial DC/DC modules. IC Role / Device Role / Timing Role: Primary high-current output rectifier handling continuous 12–16 A loads with transient surges. Use Value: 150 A IFSM rating ensures survival during 100 ms output short-circuit events without failure. |
| USB-C PD Power Delivery Module | Telecom Power Supply Unit |
Use Scenario: 20 V output rectification in compact USB-C PD 60 W chargers with tight thermal constraints. IC Role / Device Role / Timing Role: High-density synchronous rectifier alternative with simplified drive requirements. Use Value: TO-263AB package enables >20 W/cm² power density while maintaining <95°C case temperature at full load. | Use Scenario: +48 V telecom rectifier stage feeding distributed point-of-load converters. IC Role / Device Role / Timing Role: Bulk output rectifier in offline flyback or forward converter delivering up to 16 A. Use Value: 150°C TJ max and 1.5 °C/W RθJC allow stable operation at 70°C ambient with minimal heatsink area. |
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-MBR1645CT | TO-220AC package; higher RθJC (2.5 °C/W); VF = 0.65 V @ 16 A | Requires mechanical mounting and heatsink; less suitable for ultra-thin adapters | Prefer when through-hole assembly or legacy footprint reuse is required |
| ON Semiconductor MBR1645CT | TO-220AB package; same VF spec but 125°C TJ max; no guard ring | Limited high-temp reliability in sealed enclosures; lower surge margin (120 A IFSM) | Consider only if cost sensitivity outweighs thermal and ruggedness requirements |
Compared with VS-MBR1645CT and MBR1645CT, the MBRS1645 delivers superior thermal performance (1.5 vs. ≥2.5 °C/W), integrated overvoltage protection via guard ring, and surface-mount scalability-making it optimal for space-constrained, high-reliability DC/DC designs.
Availability
MBRS1645 is available at Aetrix Electronics and suitable for laptop adapters, industrial DC/DC converters, and USB-C PD power modules requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for MBRS1645 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 discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power and protection markets since 1979.
The MBRS1645 belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact switching power supplies and DC/DC converters.
FAQ
What is the maximum junction temperature rating for the MBRS1645?
The MBRS1645 has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating enables reliable operation in thermally demanding applications such as enclosed industrial power supplies and high-density USB-C PD modules where ambient temperatures exceed 70°C. Derating curves confirm usable current capacity down to 10 A at 125°C case temperature.
Does the MBRS1645 have a guard ring structure, and what is its function?
Yes, the MBRS1645 incorporates a guard ring structure explicitly documented in its features list. This design element prevents premature edge breakdown under transient overvoltage conditions, improving ruggedness in applications subject to line surges or inductive kickback. The guard ring enhances long-term reliability in SMPS and adapter designs where voltage transients exceed nominal VRRM during fault events.
What is the forward voltage of the MBRS1645 at 16 A and 125°C?
The MBRS1645 exhibits a typical forward voltage of 0.57 V at 16 A and 125°C junction temperature, as specified in the Electrical Specifications table. This value reflects reduced series resistance at elevated temperature and confirms stable conduction performance across the full industrial operating range-critical for maintaining efficiency in high-ambient environments without thermal runaway.
Is the MBRS1645 RoHS and halogen-free compliant?
Yes, the MBRS1645 is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. These compliance statements apply directly to the MBRS1645 ordering variant and are verified through material declarations and third-party testing-ensuring suitability for export-controlled and environmentally regulated end equipment.
What is the moisture sensitivity level (MSL) of the MBRS1645, and does it require baking before reflow?
The MBRS1645 has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not moisture-sensitive and does not require dry-packaging or pre-reflow baking. This eliminates handling complexity in SMT lines and supports uninterrupted high-volume production-particularly advantageous for contract manufacturers building consumer power adapters and telecom power supplies.
MBRS1645 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 630 mV @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRS1645 FAQ
1.How can I place an order for MBRS1645 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS1645 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 MBRS1645 reliable?
The price and inventory of MBRS1645 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS1645 is usually 5 days.
3.What payment methods are accepted for MBRS1645?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS1645 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS1645?
MBRS1645 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS1645 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 MBRS1645?
For technical support, including MBRS1645 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS1645 requirements.
6.How does Aetrix verify that MBRS1645 is sourced from the original manufacturer or authorized distributors?
All MBRS1645 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 MBRS1645 meets industry standards.
7.What is the process for return or replacement of MBRS1645?
All MBRS1645 units undergo pre-shipment inspection (PSI). If there is an issue with MBRS1645, 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 MBRS1645 part is unused and in its original packaging.
Return procedure for MBRS1645:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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