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Taiwan Semiconductor Corporation MBR3045CT
- Part No.:
- MBR3045CT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR3045CT.pdf
- Description:
- DIODE ARR SCHOTT 45V 30A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,915
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Product details
Overview
MBR3045CT from Taiwan Semiconductor is a 30A, 45V dual-die Schottky barrier rectifier in TO-220AB package, featuring low forward voltage (0.70 V at 15 A, 25°C), high surge current capability (200 A), and junction-to-case thermal resistance of 1.0°C/W. It serves as a primary output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the MBR3045CT datasheet, MBR3045CT pinout, MBR3045CT application, or MBR3045CT equivalent, key selection criteria include its 45 V repetitive peak reverse voltage, dual-common-cathode configuration, AEC-Q101 qualification option (MBR3045CTH), and thermal performance under continuous 30 A conduction.
Technical Context
This device integrates two independent Schottky diodes in a single TO-220AB package with common cathode connection, enabling synchronous rectification or dual-output configurations. Its guard ring structure provides overvoltage protection, and it supports operation from –55°C to +150°C junction temperature.
The MBR3045CT delivers low conduction loss with VF = 0.70 V (typ.) at 15 A/25°C and 0.73 V (max.) at 30 A/125°C, while maintaining IR ≤ 200 µA at 45 V/25°C and ≤15 mA at 45 V/125°C - critical for standby efficiency in SMPS designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - maximum repetitive reverse blocking voltage per diode; defines safe operating range in secondary-side rectification |
| IF(AV) | 30 A - average forward current rating; supports continuous high-current output stages without forced air cooling |
| IFSM | 200 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush and transient overload events |
| VF @ 15A, 25°C | ≤0.70 V - low forward drop reduces conduction loss and improves system efficiency above 90% |
| RθJC | 1.0 °C/W - thermal resistance from junction to case; enables direct heatsink mounting for thermal management |
| IR @ 45V, 25°C | ≤200 µA - low leakage preserves light-load efficiency and minimizes standby power draw |
Pinout & Package
Package: TO-220AB, 3-terminal, dual-diode common-cathode configuration. Matte tin-plated leads, UL 94V-0 molding compound, polarity marked on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first Schottky diode | Connects to transformer secondary or switching node for first output path |
| Pin 2 (Cathode) | Common cathode terminal | Shared output node; connects to output capacitor and load return path |
| Pin 3 (Anode 2) | Anode of second Schottky diode | Enables dual-output or interleaved rectification; electrically isolated from Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Provides robust overvoltage protection against transient spikes without external snubbers |
| AEC-Q101 qualified version available | MBR3045CTH meets automotive-grade reliability requirements for under-hood power modules |
| Halogen-free construction | Complies with IEC 61249-2-21; supports RoHS-compliant and environmentally regulated manufacturing |
| High dv/dt capability | 10,000 V/μs rating ensures stable operation during fast-switching transitions in high-frequency SMPS |
Applications
| Server Power Supply | Laptop Adapter |
|---|---|
Use Scenario: Primary 12 V output rectification in 80 PLUS Titanium-certified server PSUs. IC Role / Device Role / Timing Role: Dual-common-cathode Schottky rectifier replacing conventional silicon diodes to reduce conduction loss. Use Value: Enables >96% full-load efficiency by limiting VF to 0.73 V at 30 A/125°C and minimizing thermal derating. | Use Scenario: Dual-output (5 V + 20 V) USB-C PD adapter with shared ground architecture. IC Role / Device Role / Timing Role: Simultaneous rectification of two isolated secondary windings using common-cathode topology. Use Value: Reduces component count vs. discrete diodes and maintains <200 µA leakage at 45 V for low no-load power. |
| Industrial DC-DC Converter | Automotive Infotainment Power Module |
Use Scenario: 24 V input to ±15 V dual-rail converter in PLC I/O modules. IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering symmetrical positive/negative output rails. Use Value: Junction temperature range (–55°C to +150°C) and 1.0°C/W RθJC support convection-cooled operation in sealed enclosures. | Use Scenario: 12 V battery-fed power supply for head unit display backlight and audio amplifier. IC Role / Device Role / Timing Role: Output rectifier in buck-derived auxiliary rail; AEC-Q101-qualified variant used for qualification compliance. Use Value: Withstands automotive load dump transients via guard ring and sustains 200 A surge without failure per JESD201 Class 2 whisker testing. |
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-30CPH045 | Same 45 V VRRM, 30 A IF, TO-247AC package; RθJC = 0.9°C/W; VF = 0.69 V @ 15 A | Higher thermal performance but larger footprint; requires PCB re-layout | Select when board space allows and lower thermal resistance is prioritized over cost and form factor |
| ON Semiconductor MBR3045CT | Identical electrical specs and TO-220AB package; differs in marking, traceability, and qualification status (no AEC-Q101 option) | Drop-in replacement where automotive qualification is not required | Choose for cost-sensitive industrial designs where Taiwan Semiconductor's AEC-Q101 option is unnecessary |
Compared with VS-30CPH045 and ON Semiconductor's MBR3045CT, the Taiwan Semiconductor MBR3045CT offers unique AEC-Q101 qualification (via H-suffix variant) and identical TO-220AB mechanical fit, making it optimal for automotive-adjacent industrial power supplies requiring qualification traceability without layout change.
Availability
MBR3045CT is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC-DC converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MBR3045CT 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.
The MBR3045CT belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency secondary-side rectification in compact, thermally constrained AC-DC and DC-DC power systems.
FAQ
What is the maximum junction temperature rating for the MBR3045CT?
The MBR3045CT has a maximum junction temperature (TJ MAX) of +150°C, with operational range from –55°C to +150°C. This rating allows reliable use in high-temperature environments such as enclosed power supplies or under-hood automotive applications when paired with appropriate heatsinking per its 1.0°C/W RθJC specification.
Does the MBR3045CT have AEC-Q101 qualification?
The standard MBR3045CT is not AEC-Q101 qualified, but the variant MBR3045CTH is explicitly qualified to AEC-Q101. The "H" suffix denotes automotive-grade screening and testing; both share identical electrical and thermal specifications, differing only in qualification status and traceability documentation.
What is the forward voltage drop of the MBR3045CT at full rated current?
At 30 A and 25°C, the MBR3045CT exhibits a maximum forward voltage (VF) of 0.82 V per diode. At elevated junction temperature (125°C), VF rises to a maximum of 0.73 V - a key advantage over silicon rectifiers, enabling higher efficiency in thermally demanding applications.
How is the pin configuration arranged in the TO-220AB package of the MBR3045CT?
The MBR3045CT uses a 3-pin TO-220AB package with pins labeled Anode 1, Common Cathode, and Anode 2 - physically arranged left-to-right when viewing the front (marked side) with leads down. Pin 2 is the electrically common cathode; Pins 1 and 3 are isolated anodes, enabling dual-output or parallel rectification topologies.
What packaging and ordering options are available for the MBR3045CT?
The MBR3045CT is supplied in TO-220AB package, packed 50 units per tube. Ordering codes include MBR3045CT (standard) and MBR3045CTH (AEC-Q101 qualified). Both versions comply with RoHS and halogen-free standards per IEC 61249-2-21, and feature matte tin-plated leads solderable per J-STD-002.
MBR3045CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 820 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR3045CT FAQ
1.How can I place an order for MBR3045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR3045CT 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 MBR3045CT reliable?
The price and inventory of MBR3045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR3045CT is usually 5 days.
3.What payment methods are accepted for MBR3045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR3045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR3045CT?
MBR3045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR3045CT 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 MBR3045CT?
For technical support, including MBR3045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR3045CT requirements.
6.How does Aetrix verify that MBR3045CT is sourced from the original manufacturer or authorized distributors?
All MBR3045CT 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 MBR3045CT meets industry standards.
7.What is the process for return or replacement of MBR3045CT?
All MBR3045CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR3045CT, 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 MBR3045CT part is unused and in its original packaging.
Return procedure for MBR3045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR3045CT Tags
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