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Taiwan Semiconductor Corporation MBRAD1045H
- Part No.:
- MBRAD1045H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MBRAD1045H.pdf
- Description:
- 10A, 45V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
MBRAD1045H from Taiwan Semiconductor is a 10 A, 45 V Schottky barrier rectifier in ThinDPAK package, designed for low-loss freewheeling and reverse battery protection in automotive DC/DC converters. It features 0.60 V forward voltage at 10 A/25°C, 200 A surge capability, AEC-Q101 qualification, and operates up to 150°C junction temperature.
For engineers reviewing the MBRAD1045H datasheet, MBRAD1045H pinout, MBRAD1045H application, or MBRAD1045H equivalent, key selection factors include its 2.5°C/W junction-to-lead thermal resistance, J-STD-020 Level 1 moisture sensitivity, matte tin-plated leads, and cathode-band polarity marking - all critical for high-reliability automotive power designs.
Technical Context
The MBRAD1045H is a single-die Schottky rectifier optimized for high-frequency switching topologies where low forward voltage and fast recovery are essential. Its 490 pF junction capacitance at 4 V reverse bias and 0.53 V typical VF at 5 A/25°C directly support efficiency in 100 kHz–1 MHz DC/DC stages.
Thermally, it leverages the ThinDPAK's exposed leadframe for low RθJL (2.5°C/W), enabling high-current operation without external heatsinking when mounted on an Al-plate per JESD51-2. The -55°C to +150°C operating range and AEC-Q101 qualification confirm suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous) | 10 A - supports sustained output current in 12 V automotive DC/DC converters without derating below 100°C ambient |
| VRRM | 45 V - withstands load-dump transients up to ISO 7637-2 Pulse 5a (clamped at ~40 V) with margin |
| VF @ 10A/25°C | 0.60 V max - reduces conduction loss to ≤6 W per device vs. silicon diodes (>1.1 V), improving system efficiency |
| IFSM (8.3 ms) | 200 A - handles cold-crank inrush and motor stall surges in car lighting and ECU power rails |
| RθJL | 2.5°C/W - enables direct thermal coupling to PCB copper pour or chassis, simplifying thermal design |
| Junction Temp Range | -55°C to +150°C - meets AEC-Q101 temperature cycling and storage requirements for engine bay placement |
| CJ @ 4 V | 490 pF - limits capacitive switching loss and EMI in high-frequency synchronous rectifier applications |
Pinout & Package
Package: ThinDPAK (JEDEC TO-252 variation AE), surface-mount, single-ended anode-cathode configuration with exposed leadframe for thermal dissipation. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Input current terminal | Connected to switched input rail (e.g., battery or boost stage output); carries full load current |
| Pin 2 (Cathode) | Output current terminal | Connected to load or inductor node; marked by cathode band; primary heat path to PCB |
| Pin 3 (Exposed Pad) | Thermal & electrical cathode | Internally tied to cathode; soldered to large copper pour for thermal management and low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HAST, and mechanical shock per stress test plan |
| Moisture Sensitivity Level 1 | No floor life limitation or baking required before reflow - compatible with standard SMT assembly lines |
| Matte tin-plated leads | Ensures reliable solder wetting and intermetallic formation per J-STD-002; eliminates whisker risk per JESD201 Class 2 |
| UL 94V-0 molding compound | Meets flammability safety requirement for under-hood electronics and lighting modules |
| Halogen-free & RoHS compliant | Complies with automotive ELV directive and global environmental regulations for vehicle production |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 3.3 V/5 V for infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter topology, conducting during low-side switch off-time. Use Value: 0.60 V VF minimizes power loss at 10 A, reducing thermal stress and enabling compact layout without heatsink. | Use Scenario: Preventing damage when battery terminals are accidentally reversed during service or jump-start. IC Role / Device Role / Timing Role: Series-connected Schottky rectifier blocking reverse current flow into sensitive downstream circuitry. Use Value: 45 V VRRM provides margin above 14 V nominal system voltage and transient spikes, while low VF avoids excessive voltage drop. |
| Car Lighting Drivers | Inverter Output Stage |
Use Scenario: LED headlamp drivers requiring high-efficiency, high-current rectification in PWM-controlled constant-current stages. IC Role / Device Role / Timing Role: Output rectifier in flyback or buck-boost LED driver, handling pulsed 10 A loads. Use Value: 200 A IFSM accommodates lamp cold-resistance inrush, and 150°C TJ rating ensures reliability in sealed headlamp housings. | Use Scenario: Low-voltage, high-frequency inverters for HVAC blower motors or seat control actuators. IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across MOSFETs in half-bridge output stage. Use Value: 490 pF CJ and fast recovery minimize switching losses and EMI generation at 20–100 kHz switching frequencies. |
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-MBR1045TRPBF | Same 10 A/45 V rating; TO-220AC package; higher RθJA (50°C/W); no AEC-Q101 qualification | Not suitable for automotive under-hood mounting; requires heatsink for 10 A continuous | Select only for industrial or non-automotive applications where qualification and thermal performance are less critical |
| ON Semiconductor SB1045-T | Same 10 A/45 V; SMC (DO-214AB) package; RθJA = 35°C/W; AEC-Q101 qualified; VF = 0.72 V max @ 10 A | Higher VF increases conduction loss; smaller footprint but lower thermal mass than ThinDPAK | Prefer when board space is constrained and 0.12 V higher VF is acceptable for thermal budget |
Compared with VS-MBR1045TRPBF and SB1045-T, the MBRAD1045H uniquely combines AEC-Q101 qualification, ThinDPAK's superior thermal performance (RθJL = 2.5°C/W), and lowest VF in its class - making it optimal for space- and thermally constrained automotive power stages.
Availability
MBRAD1045H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting drivers requiring stable component supply and long-term production continuity.
Supply support for MBRAD1045H 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 automotive, industrial, and consumer markets since 1979.
The MBRAD1045H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability 12 V automotive power systems including start-stop ECUs and LED lighting modules.
FAQ
What is the maximum junction temperature rating for the MBRAD1045H?
The MBRAD1045H has a maximum junction temperature (TJ) of +150°C, validated per AEC-Q101 stress testing. This allows operation in under-hood environments where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature within this limit using the device's 2.5°C/W RθJL path. The MBRAD1045H datasheet specifies derating curves confirming 10 A continuous current capability up to 100°C ambient with appropriate PCB copper area.
Is the MBRAD1045H pin-compatible with other ThinDPAK Schottky rectifiers?
The MBRAD1045H uses standard JEDEC TO-252 (ThinDPAK) pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Exposed Cathode Pad. While physical footprint matches other TO-252 devices, electrical compatibility depends on voltage/current ratings and thermal specs - e.g., MBRAD1045H is not a drop-in replacement for 60 V or 15 A variants. Always verify VF, IFSM, and RθJA against target application requirements before substituting any part, including the MBRAD1045H.
Does the MBRAD1045H require special handling due to moisture sensitivity?
No - the MBRAD1045H is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or baking prior to reflow soldering. This simplifies SMT line integration and eliminates moisture-related popcorning risk. The MBRAD1045H's matte tin plating and UL 94V-0 molding compound further support robust, high-yield assembly without special process controls.
What is the marking code printed on the MBRAD1045H package?
The MBRAD1045H is marked with "1045" on the top surface of the ThinDPAK body, per its ordering information. This 4-digit code identifies the device's voltage (45 V) and current (10 A) ratings. The full part number MBRAD1045H appears only in packaging labels and documentation - not on the device itself. Date code and factory code follow the "YWWF" format adjacent to the "1045" marking.
How does the MBRAD1045H perform at elevated temperature?
At 125°C junction temperature, the MBRAD1045H maintains VF = 0.53 V max at 10 A - a 0.07 V reduction versus 25°C, improving conduction efficiency in hot environments. Reverse leakage rises to 20 mA at 125°C, which remains manageable in most automotive applications due to the device's low dynamic impedance. The MBRAD1045H's guaranteed -55°C to +150°C operating range ensures functionality across full automotive temperature extremes without parameter drift beyond spec limits.
MBRAD1045H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Capacitance @ Vr, F:
- 490pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ThinDPAK
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRAD1045H FAQ
1.How can I place an order for MBRAD1045H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRAD1045H 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 MBRAD1045H reliable?
The price and inventory of MBRAD1045H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRAD1045H is usually 5 days.
3.What payment methods are accepted for MBRAD1045H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRAD1045H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRAD1045H?
MBRAD1045H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRAD1045H 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 MBRAD1045H?
For technical support, including MBRAD1045H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRAD1045H requirements.
6.How does Aetrix verify that MBRAD1045H is sourced from the original manufacturer or authorized distributors?
All MBRAD1045H 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 MBRAD1045H meets industry standards.
7.What is the process for return or replacement of MBRAD1045H?
All MBRAD1045H units undergo pre-shipment inspection (PSI). If there is an issue with MBRAD1045H, 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 MBRAD1045H part is unused and in its original packaging.
Return procedure for MBRAD1045H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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