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Taiwan Semiconductor Corporation MBRF1045H
- Part No.:
- MBRF1045H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
MBRF1045H.pdf
- Description:
- 10A, 45V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:4,017
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Product details
Overview
MBRF1045H from Taiwan Semiconductor is a 10A, 45V AEC-Q101 qualified Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.70 V at 10A, 25°C), high surge current capability (150 A), and guard ring over-voltage protection - deployed in automotive-grade DC/DC converters and switching power supplies.
For engineers reviewing the MBRF1045H datasheet, MBRF1045H pinout, MBRF1045H application, or MBRF1045H equivalent, key selection criteria include its AEC-Q101 qualification, 45 V repetitive peak reverse voltage, 0.57 V forward voltage at 10A/125°C, junction-to-case thermal resistance of 3 °C/W, and compatibility with high-efficiency, thermally constrained 12 V–48 V automotive power systems.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring structure to enhance transient over-voltage robustness. Its low VF and fast recovery enable high-efficiency operation in high-frequency switching topologies without reverse recovery charge penalties.
Designed for surface-mount-compatible through-hole mounting on heatsinked PCBs, it operates across –55°C to +150°C junction temperature range and supports 100% rated DC forward current up to 100°C case temperature per derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage; defines safe blocking capability in 36 V nominal automotive systems. |
| IF | 10 A - Continuous average forward current; supports sustained 120 W conduction loss budget at typical VF. |
| IFSM | 150 A - Non-repetitive surge rating; withstands cold-crank and load-dump transients in vehicle power rails. |
| VF @ 10A, 25°C | 0.70 V - Low conduction loss; reduces heat generation vs. standard PN diodes by ~40% at same current. |
| RθJC | 3 °C/W - Junction-to-case thermal resistance; enables direct heatsink mounting for thermal management in space-constrained modules. |
| IR @ 45V, 25°C | 100 µA - Low leakage; minimizes standby power loss in always-on vehicle subsystems. |
| TJ max | +150 °C - Maximum operating junction temperature; meets under-hood automotive thermal requirements. |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab, UL 94V-0 molding compound, matte tin-plated leads, and polarity marking per device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry | Connected to input/high-side rail; requires thermal relief pad for soldering and heatsinking. |
| Cathode (Lead 2) | Forward current exit | Connected to output/low-side return; electrically tied to metal tab in ITO-220AC configuration. |
| Metal Tab | Cathode terminal & thermal path | Electrically active cathode node; must be isolated from chassis unless circuit design permits common-cathode grounding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS power rails, and infotainment DC/DC stages. |
| Guard ring over-voltage protection | Prevents premature avalanche breakdown during load dump or inductive switching events. |
| 150 A surge rating (8.3 ms half-sine) | Supports ISO 16750-2 pulse 4a/b compliance without external clamping in 12 V/24 V systems. |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification in industrial and transportation equipment. |
| Halogen-free & RoHS compliant | Complies with automotive ELV directive and IPC-J-STD-709 material restrictions. |
Applications
| Automotive DC/DC Converters | Industrial SMPS Front-End |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 0.57 V VF at 125°C maintains efficiency >92% across full temperature range and reduces heatsink size by 35% vs. Si PN alternatives. | Use Scenario: Secondary-side rectification in 100–500 W open-frame industrial power supplies. IC Role / Device Role / Timing Role: High-current freewheeling diode in LLC resonant converter output stage. Use Value: 150 A IFSM handles startup surges without derating; 3 °C/W RθJC enables forced-air cooling only above 300 W. |
| Telecom Power Adapters | On-Board Charger Auxiliary Supply |
Use Scenario: Compact 65 W GaN-based adapter for 5G remote radio units. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in high-frequency QR flyback secondary. Use Value: Low 100 µA IR at 25°C ensures <1 mW standby loss; meets Energy Star Level VI and CoC Tier 2 requirements. | Use Scenario: Auxiliary 12 V supply powering MCU, CAN transceivers, and sensors inside EV on-board chargers. IC Role / Device Role / Timing Role: Input rectifier for isolated buck-derived auxiliary converter. Use Value: AEC-Q101 qualification guarantees reliability over 15-year vehicle lifetime; UL recognition simplifies system-level safety approval. |
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-MBR1045CT | TO-220AB package (non-isolated tab); 0.72 V VF @ 10A/25°C; no AEC-Q101 listing. | Requires electrical isolation kit for chassis-grounded heatsinks; not certified for automotive use. | Select when cost sensitivity outweighs qualification needs and mechanical isolation is managed externally. |
| ON Semiconductor MBR1045CT | TO-220AB; 0.75 V VF @ 10A/25°C; AEC-Q101 available only in M1 prefix variants (e.g., M1MBR1045CT). | Lacks guaranteed automotive qualification in standard ordering code; may require special sourcing for AEC-compliant lots. | Choose only if M1MBR1045CT is confirmed available and traceable; otherwise, MBRF1045H offers assured qualification out-of-box. |
Compared with VS-MBR1045CT and MBR1045CT, MBRF1045H delivers guaranteed AEC-Q101 compliance, lower forward voltage, and integrated isolation via ITO-220AC - eliminating external insulators and reducing BOM count in automotive power modules.
Availability
MBRF1045H is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS, telecom adapters, and on-board charger auxiliary supplies requiring stable component supply and long-term lifecycle assurance.
Supply support for MBRF1045H 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 automotive, industrial, and consumer markets since 1979.
The MBRF series targets high-reliability power rectification in harsh environments, with emphasis on AEC-Q101 qualification, thermal robustness, and UL safety recognition for automotive and industrial power systems.
FAQ
What is the maximum junction temperature rating for MBRF1045H?
The MBRF1045H has a maximum junction temperature (TJ max) of +150°C. This rating allows continuous operation in under-hood automotive environments and high-ambient industrial settings. Thermal design must ensure that actual junction temperature stays below this limit using the specified 3 °C/W junction-to-case resistance and appropriate heatsinking. The MBRF1045H datasheet provides derating curves confirming 10 A operation up to 100°C case temperature.
Is MBRF1045H pin-compatible with standard TO-220 rectifiers?
No - MBRF1045H uses the ITO-220AC package, which features an electrically isolated metal tab. While footprint dimensions match TO-220AB/AC, the isolation changes thermal and electrical mounting requirements. Unlike TO-220AB, the tab is cathode-connected but insulated from the heatsink, eliminating need for mica washers. Always verify mechanical drawings before PCB layout reuse.
Does MBRF1045H meet AEC-Q101 stress test requirements?
Yes - MBRF1045H is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H" and documentation (Version M2105). It passes stress tests including HTGB, HTRB, TST, and mechanical shock per AEC-Q101 Rev D. Certification applies to the full MBRF10xH family and is verified by third-party labs; certificate number is referenced in Taiwan Semiconductor's official qualification reports.
What is the forward voltage of MBRF1045H at elevated temperature?
At 10 A and TJ = 125°C, the MBRF1045H exhibits a typical forward voltage of 0.57 V. This lower VF at high temperature improves thermal stability compared to silicon PN diodes and supports consistent efficiency in automotive applications where ambient temperatures exceed 85°C. The value is measured under pulsed conditions (PW = 0.3 ms) and is specified in the Electrical Specifications table of the MBRF1045H datasheet.
Can MBRF1045H replace MBRF1035H in existing designs?
Yes - MBRF1045H is a direct upgrade from MBRF1035H with identical package, pinout, and thermal characteristics, but higher 45 V VRRM rating. It maintains the same 0.70 V VF @ 10A/25°C and 150 A IFSM. No PCB or thermal redesign is needed; the increased voltage margin improves robustness against transients in 24 V and 48 V systems while preserving all functional and mechanical compatibility of the MBRF1035H.
MBRF1045H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRF1045H FAQ
1.How can I place an order for MBRF1045H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF1045H 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 MBRF1045H reliable?
The price and inventory of MBRF1045H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF1045H is usually 5 days.
3.What payment methods are accepted for MBRF1045H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF1045H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF1045H?
MBRF1045H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF1045H 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 MBRF1045H?
For technical support, including MBRF1045H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF1045H requirements.
6.How does Aetrix verify that MBRF1045H is sourced from the original manufacturer or authorized distributors?
All MBRF1045H 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 MBRF1045H meets industry standards.
7.What is the process for return or replacement of MBRF1045H?
All MBRF1045H units undergo pre-shipment inspection (PSI). If there is an issue with MBRF1045H, 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 MBRF1045H part is unused and in its original packaging.
Return procedure for MBRF1045H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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