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Taiwan Semiconductor Corporation MBRS1045H
- Part No.:
- MBRS1045H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS1045H.pdf
- Description:
- 10A, 45V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,354
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Product details
Overview
MBRS1045H from Taiwan Semiconductor is a 10A, 45V AEC-Q101-qualified Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring low forward voltage (0.84V at 20A/25°C), 120A surge capability, and guard ring for overvoltage protection-used in automotive DC/DC converters and reverse battery protection circuits.
For engineers reviewing the MBRS1045H datasheet, MBRS1045H pinout, MBRS1045H application, or MBRS1045H equivalent, key selection criteria include VRRM = 45V, IF = 10A continuous, TJMAX = 175°C, RθJC = 2°C/W, and AEC-Q101 qualification for under-hood automotive use.
Technical Context
The MBRS1045H is a single-die Schottky rectifier optimized for low-loss, high-frequency operation in automotive power systems. Its 45V VRRM, 120A IFSM, and 2°C/W junction-to-case thermal resistance enable robust performance in space-constrained, thermally demanding environments.
Designed with a guard ring structure and matte tin-plated leads compliant with J-STD-002, it supports automated SMT placement and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in reverse-biased freewheeling or reverse-polarity protection. |
| IF | 10 A - Continuous forward current rating at TC = 110°C; determines steady-state power delivery capacity. |
| IFSM | 120 A - Non-repetitive peak surge current (8.3 ms half-sine); supports transient load dumps and inrush events. |
| VF | 0.84 V @ 20A, 25°C - Low conduction loss enables high-efficiency DC/DC conversion and reduced thermal stress. |
| RθJC | 2 °C/W - Thermal resistance from junction to case; enables direct heatsinking via the exposed tab for thermal management. |
| TJMAX | 175 °C - Maximum junction temperature; allows operation in under-hood automotive environments. |
Pinout & Package
Package: TO-263AB (D2PAK) - surface-mount power package with exposed metal tab for thermal dissipation and mechanical anchoring; polarity marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Tab) | Power input / cathode-side reference | Exposed copper tab serves as anode terminal and primary thermal path; must be soldered to large copper area for heat transfer. |
| Cathode (Lead 2) | Power output / load return | Single gull-wing lead carries full forward current; connects to PCB trace routing to load or ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test conditions. |
| Guard ring structure | Enhances edge termination robustness against voltage transients and localized field crowding during reverse bias. |
| Moisture sensitivity Level 1 | No floor life limitation or bake requirement before reflow; compatible with standard SMT assembly lines without dry pack handling. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive; supports environmentally regulated automotive supply chains. |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion in 12V/48V hybrid architectures with high switching frequency (>200 kHz). IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to minimize conduction loss and improve efficiency. Use Value: 0.84V VF at 20A reduces power loss by >40% vs. comparable fast recovery diodes, lowering thermal design burden. | Use Scenario: Preventing damage during accidental reverse connection of vehicle battery terminals. IC Role / Device Role / Timing Role: Series-connected anode-to-battery-positive blocking element that conducts only during correct polarity. Use Value: 45V VRRM and 120A IFSM withstand jump-start surges and load dump transients without failure. |
| Freewheeling Diodes | Car Lighting Systems |
Use Scenario: Inductive kickback suppression in LED driver and motor control H-bridge outputs. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path for inductive current decay during PWM off-time. Use Value: Schottky architecture eliminates minority-carrier storage delay, enabling clean current commutation at >500 kHz. | Use Scenario: Power rectification and polarity protection in adaptive headlamp modules and interior ambient lighting. IC Role / Device Role / Timing Role: Input-stage rectifier and reverse-polarity safeguard in compact LED driver PCBs. Use Value: TO-263AB footprint and 1.37g weight support miniaturized, vibration-resistant automotive lighting assemblies. |
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-220AC package; dual common-cathode configuration; VF = 0.78V @ 10A, 25°C. | Requires different mounting and thermal interface; not surface-mount; lacks AEC-Q101 qualification. | Preferred where through-hole assembly or dual-diode topology is required; not suitable for AEC-Q101-compliant automotive SMT designs. |
| ON Semiconductor MBR1045CT | TO-220AB package; dual common-cathode; VF = 0.75V @ 10A, 25°C; no AEC-Q101 data published. | Higher thermal resistance (~3.5°C/W); incompatible footprint; unqualified for automotive stress testing. | Acceptable for industrial DC/DC where qualification and SMT are not mandatory; requires layout redesign and thermal reassessment. |
Compared with VS-MBR1045CT and MBR1045CT, the MBRS1045H offers AEC-Q101 compliance, TO-263AB SMT compatibility, lower RθJC (2°C/W), and guaranteed 45V VRRM - making it the only qualified choice for automotive front-end rectification where reliability, thermal performance, and automated assembly converge.
Availability
MBRS1045H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and freewheeling diode applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for MBRS1045H 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 MBRS10xxH series targets high-reliability automotive power conversion, delivering Schottky rectifiers with AEC-Q101 qualification, optimized thermal performance, and SMT-ready packaging for under-hood and body-control module applications.
FAQ
What is the maximum junction temperature rating for MBRS1045H?
The MBRS1045H has a maximum junction temperature (TJMAX) of 175°C, validated per AEC-Q101 stress testing. This rating enables reliable operation in high-ambient automotive environments such as engine compartments and power distribution units. The device maintains specified electrical parameters up to this temperature when thermal design ensures junction-to-case resistance remains within 2°C/W limits. Derating curves in the MBRS1045H datasheet confirm usable current capacity down to 110°C case temperature.
Is MBRS1045H qualified to AEC-Q101 standards?
Yes, the MBRS1045H is explicitly AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's official documentation (Version A2103). Qualification includes temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD) testing per AEC-Q101-004 and -005. This makes MBRS1045H suitable for automotive applications where component-level reliability validation is mandatory, unlike non-qualified alternatives such as MBR1045CT or VS-MBR1045CT.
What is the forward voltage drop of MBRS1045H at rated current?
The MBRS1045H exhibits a typical forward voltage (VF) of 0.84 V at 20 A and 25°C, and 0.72 V at 20 A and 125°C. At its rated continuous current of 10 A, VF is approximately 0.65–0.70 V depending on junction temperature. These values are measured under pulsed conditions per JEDEC standards and reflect the low-loss Schottky architecture critical for high-efficiency DC/DC converter designs using MBRS1045H.
Does MBRS1045H have a guard ring structure?
Yes, the MBRS1045H incorporates a guard ring structure in its die design, as stated in Taiwan Semiconductor's official features list. This guard ring improves edge termination robustness, mitigates electric field crowding at the silicon periphery, and enhances resistance to overvoltage transients and localized breakdown-particularly important in automotive load-dump and inductive-switching environments where MBRS1045H is deployed.
What is the moisture sensitivity level (MSL) of MBRS1045H?
The MBRS1045H is rated at 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 manufacturing logistics and eliminates yield risk from moisture-induced popcorning during SMT assembly-a key advantage for high-volume automotive electronics production using MBRS1045H.
MBRS1045H 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- -
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MBRS1045H FAQ
1.How can I place an order for MBRS1045H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS1045H 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 MBRS1045H reliable?
The price and inventory of MBRS1045H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS1045H is usually 5 days.
3.What payment methods are accepted for MBRS1045H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS1045H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS1045H?
MBRS1045H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS1045H 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 MBRS1045H?
For technical support, including MBRS1045H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS1045H requirements.
6.How does Aetrix verify that MBRS1045H is sourced from the original manufacturer or authorized distributors?
All MBRS1045H 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 MBRS1045H meets industry standards.
7.What is the process for return or replacement of MBRS1045H?
All MBRS1045H units undergo pre-shipment inspection (PSI). If there is an issue with MBRS1045H, 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 MBRS1045H part is unused and in its original packaging.
Return procedure for MBRS1045H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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