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Taiwan Semiconductor Corporation MBRS1045CT-Y
- Part No.:
- MBRS1045CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS1045CT-Y.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,187
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Product details
Overview
MBRS1045CT-Y from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 10 A average forward current and 45 V repetitive peak reverse voltage, with 0.80 V max forward voltage at 10 A and 25°C, used in high-efficiency DC/DC converters and switching power supplies.
For engineers reviewing the MBRS1045CT-Y datasheet, MBRS1045CT-Y pinout, MBRS1045CT-Y application, or MBRS1045CT-Y equivalent, key selection criteria include its 120 A surge capability, 2 °C/W junction-to-case thermal resistance, guard-ring overvoltage protection, and J-STD-020 Level 1 moisture sensitivity rating.
Technical Context
This dual-die surface-mount Schottky rectifier integrates two independent 45 V / 10 A diodes in a common-cathode configuration, enabling synchronous rectification or dual-output SMPS topologies. Its low VF and fast recovery support high-frequency operation up to 20 kHz with minimal conduction loss.
The device features a guard ring structure for enhanced transient overvoltage immunity and meets JESD201 Class 1A whisker resistance. Thermal performance is defined by RθJC = 2 °C/W, supporting high-power density designs without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for output capacitor and snubber design in 36–48 V input systems |
| IF(AV) | 10 A - Continuous forward current per diode; determines heatsink sizing and PCB copper area for 50–100 W power stages |
| VF @ 10A, 25°C | 0.80 V max - Directly impacts conduction loss (Pcond ≈ 0.8 W/diode), critical for >90% efficiency targets |
| IFSM | 120 A - Single half-sine surge rating (8.3 ms); supports cold-start and short-circuit robustness in AC/DC adapters |
| RθJC | 2 °C/W - Enables direct thermal coupling to heatsink or copper pour; allows ~50°C temperature rise at full load with 100 W dissipation |
| IR @ 45 V, 25°C | 100 µA max - Low leakage preserves standby power in energy-efficient PSUs meeting DOE Level VI or EU CoC Tier 2 |
| TJ max | +150 °C - Supports operation in sealed enclosures or high-ambient industrial environments without derating |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, 3-terminal case with exposed thermal pad. Cathode common to tab (Pin 3), Anode 1 (Pin 1), Anode 2 (Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input node for first diode leg; connects to primary-side switch node in synchronous buck or secondary-side winding in flyback |
| Pin 2 | Anode 2 | Input node for second diode leg; enables dual-output or interleaved converter configurations |
| Pin 3 (Tab) | Common Cathode | Output return path for both diodes; must be soldered to large copper pour or heatsink for thermal and EMI control |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Prevents premature avalanche failure during line transients or inductive kickback in unregulated supplies |
| Matte tin-plated leads | Ensures reliable solder wetting and long-term joint integrity under thermal cycling per J-STD-002 |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirement prior to reflow; supports standard SMT assembly without special handling |
| Dual-die common-cathode topology | Reduces component count vs. discrete diodes; simplifies layout and improves current sharing in dual-rail outputs |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certifications (IEC 62368-1, UL 62368) |
Applications
| Server VRM Power Stage | Laptop Adapter Secondary Side |
|---|---|
Use Scenario: High-current, high-frequency point-of-load regulation delivering 12 V @ 10 A to CPU/GPU VRMs. IC Role / Device Role / Timing Role: Synchronous rectifier replacing MOSFETs in secondary-side synchronous buck; leverages low VF for <1 W conduction loss. Use Value: Enables >94% efficiency at full load while maintaining compact footprint due to D2PAK thermal performance. | Use Scenario: 65 W USB-C PD adapter with dual-output (5 V/3 A + 20 V/3.25 A) architecture. IC Role / Device Role / Timing Role: Common-cathode dual Schottky for independent 5 V and 20 V secondary rectification. Use Value: Reduces BOM count by one diode vs. discrete solution and maintains <0.5% cross-regulation error. |
| Industrial DC/DC Converter | Automotive Infotainment PSU |
Use Scenario: 24 V input, 5 V/12 V dual-output isolated DC/DC module for PLC I/O modules. IC Role / Device Role / Timing Role: Output rectifier in forward converter secondary; handles 100 kHz switching with minimal reverse recovery loss. Use Value: Guarantees -40°C to +105°C ambient operation with no derating, supported by 150°C TJ rating. | Use Scenario: 12 V battery-fed power supply for head unit display backlight and audio amplifier rails. IC Role / Device Role / Timing Role: Clamp and rectifier in boost-derived auxiliary supply; withstands load dump transients via guard ring. Use Value: Survives ISO 7637-2 Pulse 5a (120 V/100 ms) without degradation due to overvoltage ruggedness. |
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 | Same 10 A / 45 V rating, RθJC = 2.2 °C/W, VF = 0.79 V max @ 10 A, 25°C; RoHS-compliant but halogen-free status not specified | No guard ring; lower surge immunity limits use in unclamped inductive loads | Preferred where cost sensitivity outweighs transient robustness; verify layout clearance for dv/dt stress |
| ON Semiconductor MBR1045CT | Identical electrical specs, same TO-263AB package, but moisture sensitivity level is Level 3 (requires bake before reflow) | Not suitable for high-volume automated assembly without humidity control or pre-bake process | Acceptable for low-volume prototyping; avoid in production lines lacking J-STD-020 Level 1 handling capability |
Compared with VS-MBR1045CT and MBR1045CT, MBRS1045CT-Y offers superior transient ruggedness via guard ring and eliminates reflow bake steps with Level 1 moisture rating-critical for automotive and industrial manufacturing lines requiring zero process deviation.
Availability
MBRS1045CT-Y is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply, high thermal reliability, and RoHS/halogen-free compliance.
Supply support for MBRS1045CT-Y 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 electronics markets since 1979.
The MBRS1045CT-Y belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in consumer, industrial, and computing applications.
FAQ
What is the maximum junction temperature rating for MBRS1045CT-Y?
The MBRS1045CT-Y has a maximum junction temperature (TJ) of +150°C, allowing uninterrupted operation in sealed enclosures or high-ambient environments such as industrial motor drives or automotive under-hood modules. This rating is validated across the full -55°C to +150°C storage range and supports derating curves up to 100% IF at 100°C case temperature.
Does MBRS1045CT-Y have a common-cathode or common-anode configuration?
The MBRS1045CT-Y uses a common-cathode configuration: Pin 1 and Pin 2 are independent anodes, and Pin 3 (the exposed tab) is the shared cathode. This arrangement is confirmed in the marking diagram and mechanical outline, and enables dual-output DC/DC designs without external parallel diodes.
Is MBRS1045CT-Y halogen-free and RoHS compliant?
Yes, MBRS1045CT-Y is both RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, satisfying environmental requirements for export to EU, Japan, and China RoHS jurisdictions without exception reporting.
What is the forward voltage drop of MBRS1045CT-Y at 10 A and 125°C?
At 10 A forward current and 125°C junction temperature, the MBRS1045CT-Y exhibits a typical forward voltage of 0.67 V, with no maximum specified-only a 0.80 V max at 25°C. This lower VF at elevated temperature improves thermal stability in high-power-density designs where self-heating would otherwise increase losses.
Can MBRS1045CT-Y replace MBRS1060CT-Y in a 45 V design?
No-MBRS1060CT-Y is rated for 60 V VRRM, while MBRS1045CT-Y is strictly rated for 45 V. Substituting MBRS1045CT-Y in a 60 V system risks reverse breakdown during transients or ripple peaks. The "x" in MBRS10xCT-Y denotes voltage grade; only identical "x" values guarantee voltage compatibility.
MBRS1045CT-Y 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
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
MBRS1045CT-Y FAQ
1.How can I place an order for MBRS1045CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS1045CT-Y 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 MBRS1045CT-Y reliable?
The price and inventory of MBRS1045CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS1045CT-Y is usually 5 days.
3.What payment methods are accepted for MBRS1045CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS1045CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS1045CT-Y?
MBRS1045CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS1045CT-Y 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 MBRS1045CT-Y?
For technical support, including MBRS1045CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS1045CT-Y requirements.
6.How does Aetrix verify that MBRS1045CT-Y is sourced from the original manufacturer or authorized distributors?
All MBRS1045CT-Y 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 MBRS1045CT-Y meets industry standards.
7.What is the process for return or replacement of MBRS1045CT-Y?
All MBRS1045CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBRS1045CT-Y, 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 MBRS1045CT-Y part is unused and in its original packaging.
Return procedure for MBRS1045CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRS1045CT-Y Tags
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