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Taiwan Semiconductor Corporation MBR1045CT
- Part No.:
- MBR1045CT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR1045CT.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,340
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Product details
Overview
MBR1045CT from Taiwan Semiconductor is a 10A dual-die Schottky barrier rectifier in TO-220AB package, rated for 45V repetitive peak reverse voltage (VRRM), 120A non-repetitive surge current (IFSM), and maximum junction temperature of 150°C; used in high-efficiency DC/DC converters and AC/DC adapters where low forward voltage drop and fast switching are critical.
For engineers reviewing the MBR1045CT datasheet, MBR1045CT pinout, MBR1045CT application, or MBR1045CT equivalent, key selection criteria include verified VF = 0.70 V @ 5A/25°C, IR = 100 µA @ 45V/25°C, RθJC = 1.5 °C/W, and AEC-Q101 qualification availability (H-suffix variant).
Technical Context
The MBR1045CT integrates two independent Schottky diodes in a single TO-220AB thermally optimized package with common cathode configuration. Its guard ring structure provides overvoltage protection, and it supports high-frequency operation due to low junction capacitance and absence of minority-carrier storage delay.
Designed for continuous conduction mode (CCM) and discontinuous conduction mode (DCM) topologies, the device delivers low power loss via forward voltage as low as 0.67 V @ 10A/125°C and maintains stable reverse leakage (<15 mA @ 45V/125°C), enabling reliable thermal performance in compact power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum sustainable reverse blocking voltage without breakdown |
| IF | 10 A - Continuous average forward current per diode at TC = 100°C |
| IFSM | 120 A - Peak non-repetitive surge current (8.3 ms half-sine), supporting inrush tolerance |
| VF @ 5A/25°C | 0.70 V - Low conduction loss enabling >92% efficiency in 12V-output SMPS |
| IR @ 45V/25°C | 100 µA - Minimal leakage ensuring stable standby power and reduced no-load loss |
| RθJC | 1.5 °C/W - Efficient heat transfer from junction to case, enabling direct heatsink mounting |
Pinout & Package
Package: TO-220AB, 3-terminal molded plastic case with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 rated compound, 1.88 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first Schottky diode; electrically isolated from tab |
| Pin 2 (Center) | Cathode (Common) | Shared cathode node connected to metal tab; requires electrical isolation from PCB ground unless intended |
| Pin 3 (Right) | Anode 2 | Input terminal for second Schottky diode; electrically isolated from tab and Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without derating VRRM |
| AEC-Q101 qualified option | Available as MBR1045CTH for automotive-grade reliability (temperature cycling, HTRB, ESD) |
| Low VF @ high temperature | 0.67 V @ 10A/125°C enables stable efficiency across industrial ambient range |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Server Power Supply | Laptop Adapter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48V–12V intermediate bus converter. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier replacing MOSFETs in cost-sensitive designs; common-cathode topology simplifies layout. Use Value: 0.70 V forward drop at 5A reduces conduction loss by ~35% vs. standard PN rectifiers, lowering thermal load on heatsink. | Use Scenario: Output rectification in 19V/3.42A universal input AC/DC adapter. IC Role / Device Role / Timing Role: High-current dual-diode rectifier delivering 10A total output with shared cathode return path. Use Value: 120A surge rating withstands repeated plug-in surges; TO-220AB mechanical robustness supports automated through-hole assembly. |
| Industrial PLC Power Module | Telecom DC/DC Brick |
Use Scenario: Input-stage OR-ing diode pair in redundant 24V DC power distribution. IC Role / Device Role / Timing Role: Back-to-back configured MBR1045CT units provide reverse-polarity and fault-isolation protection. Use Value: 150°C max junction temperature ensures operation in sealed enclosures up to 70°C ambient with minimal derating. | Use Scenario: Isolated output rectification in 48V input, 3.3V/20A telecom brick with <1% ripple requirement. IC Role / Device Role / Timing Role: Low-junction-capacitance Schottky pair minimizes high-frequency noise coupling into sensitive analog rails. Use Value: 100 µA reverse leakage at 25°C prevents standby current drift in always-on control circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1045CG | Same 10A/45V rating, TO-220AC package (isolated tab), VF = 0.72 V @ 5A/25°C | No AEC-Q101 variant offered; lower surge rating (100A vs. 120A) | Preferred when tab isolation is mandatory and AEC-Q101 not required |
| ON Semi MBR1045CT | Identical marking, same TO-220AB package, but VF = 0.75 V @ 5A/25°C and IR = 120 µA @ 45V/25°C | Higher leakage and marginally higher VF; no halogen-free certification stated | Valid alternative only if RoHS/halogen-free compliance is not mandated |
Compared with STPS1045CG and ON Semi MBR1045CT, the Taiwan Semiconductor MBR1045CT offers superior surge robustness (120A), tighter leakage control (100 µA), and halogen-free compliance-making it optimal for space-constrained industrial and automotive-qualified designs requiring long-term thermal stability.
Availability
MBR1045CT is available at Aetrix Electronics and suitable for server power supplies, laptop adapters, and industrial PLC power modules requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for MBR1045CT 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, automotive, and industrial markets since 1979.
The MBR10xxCT series targets high-efficiency AC/DC and DC/DC conversion systems, emphasizing thermal reliability, surge resilience, and qualification-readiness for automotive and industrial environments.
FAQ
What is the pin configuration of the MBR1045CT?
The MBR1045CT uses a TO-220AB package with three terminals: Pin 1 (left) is Anode 1, Pin 2 (center) is the common Cathode connected to the metal tab, and Pin 3 (right) is Anode 2. The tab must be electrically isolated unless intentionally used as the cathode return path. This configuration supports dual independent rectification paths with shared output.
Is the MBR1045CT suitable for automotive applications?
Yes-the AEC-Q101 qualified version is designated MBR1045CTH and undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per JESD22. Standard MBR1045CT is not AEC-Q101 certified; design-in for automotive use requires explicit verification of the 'H' suffix part number and its qualification report.
What is the maximum allowable case temperature for continuous operation of the MBR1045CT?
The MBR1045CT supports continuous operation up to 100°C case temperature (TC) at full 10A rated current, based on its thermal resistance RθJC = 1.5 °C/W and TJMAX = 150°C. Derating is required above 100°C case temperature; full current is not sustainable at TC > 100°C without active cooling or reduced load.
How does the MBR1045CT compare to the MBR1035CT in terms of forward voltage and thermal performance?
The MBR1045CT and MBR1035CT share identical forward voltage specs (0.70 V @ 5A/25°C, 0.67 V @ 10A/125°C) and thermal resistance (RθJC = 1.5 °C/W). Their key difference lies in VRRM: 45V vs. 35V. Both use the same TO-220AB package and dual-die construction, making them mechanically interchangeable where voltage margin permits.
Does the MBR1045CT require a heatsink in typical 10A applications?
Yes-a heatsink is strongly recommended. At 10A and 0.67 V forward drop, power dissipation exceeds 6.7 W. With RθJC = 1.5 °C/W and ambient at 50°C, junction temperature would exceed 150°C without additional thermal resistance reduction. A minimum 10 cm² aluminum heatsink (RθSA ≤ 10 °C/W) is advised for sustained 10A operation.
MBR1045CT 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR1045CT FAQ
1.How can I place an order for MBR1045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1045CT 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 MBR1045CT reliable?
The price and inventory of MBR1045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1045CT is usually 5 days.
3.What payment methods are accepted for MBR1045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1045CT?
MBR1045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1045CT 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 MBR1045CT?
For technical support, including MBR1045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1045CT requirements.
6.How does Aetrix verify that MBR1045CT is sourced from the original manufacturer or authorized distributors?
All MBR1045CT 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 MBR1045CT meets industry standards.
7.What is the process for return or replacement of MBR1045CT?
All MBR1045CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR1045CT, 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 MBR1045CT part is unused and in its original packaging.
Return procedure for MBR1045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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