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Taiwan Semiconductor Corporation MBRF1545CT-Y
- Part No.:
- MBRF1545CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
MBRF1545CT-Y.pdf
- Description:
- DIODE ARR SCHOT 45V 15A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,748
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Product details
Overview
MBRF1545CT-Y from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in ITO-220AB package, rated for 15 A average forward current, 45 V repetitive peak reverse voltage, and 150 A surge current. It delivers low forward voltage (0.84 V at 15 A, 25°C) and operates up to 150°C junction temperature, enabling high-efficiency power conversion in compact AC/DC adapters.
For engineers reviewing the MBRF1545CT-Y datasheet, MBRF1545CT-Y pinout, MBRF1545CT-Y application, or MBRF1545CT-Y equivalent, key selection criteria include its 45 V VRRM, dual common-cathode configuration, ITO-220AB thermal performance (RθJC = 3.5°C/W), and RoHS/halogen-free compliance for industrial power supply design.
Technical Context
This device integrates two independent Schottky diodes in a single ITO-220AB thermally enhanced package with common cathode connection. Its guard ring structure provides overvoltage protection, while the matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 1A whisker resistance requirements.
The MBRF1545CT-Y supports high-frequency switching with 10,000 V/µs critical dv/dt rating and exhibits low reverse leakage (500 µA max at 25°C, 45 V) - critical for maintaining efficiency in SMPS and DC/DC converters operating near thermal limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum reverse blocking capability without breakdown; defines usable input voltage range in rectification stage |
| IF | 15 A - Continuous average forward current per diode; determines steady-state power handling in adapter designs |
| IFSM | 150 A - Non-repetitive surge current (8.3 ms half-sine); enables robustness against line transients and inrush events |
| VF @ 15 A, 25°C | 0.84 V - Low conduction loss per diode; directly reduces power dissipation and improves system efficiency |
| RθJC | 3.5 °C/W - Junction-to-case thermal resistance; enables predictable heatsink sizing for 15 A operation at ≤150°C TJ |
| TJ max | 150 °C - Maximum allowable junction temperature; sets upper thermal limit for reliability in enclosed power supplies |
| IR @ 45 V, 25°C | 500 µA - Reverse leakage per diode; impacts standby power and thermal runaway risk in parallel configurations |
Pinout & Package
Package: ITO-220AB - Thermally optimized plastic package with exposed metal tab for direct heatsink mounting; meets UL 94V-0 flammability rating and supports 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab (Anode 1) | Anode of first diode | Electrically connected to case; requires isolation from heatsink unless referenced to system ground |
| Tab (Anode 2) | Anode of second diode | Dual anodes share same tab; enables common-anode configuration when used with external cathode routing |
| Lead 1 (Cathode) | Common cathode terminal | Single output node for both diodes; simplifies PCB layout in center-tapped transformer rectifiers |
| Lead 2 (Cathode) | Common cathode terminal | Redundant cathode lead for current sharing and mechanical stability; electrically tied to Lead 1 internally |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Prevents premature avalanche failure under transient reverse stress, extending lifetime in unregulated input stages |
| Matte tin-plated leads | Ensures reliable solder wetting and long-term intermetallic formation control per J-STD-002 |
| Dual-die common-cathode configuration | Reduces component count vs. discrete diodes; maintains matched thermal and electrical characteristics between channels |
| RoHS and halogen-free compliance | Fulfills IEC 61249-2-21 requirements for environmentally constrained industrial and consumer end equipment |
| JESD 201 Class 1A whisker resistance | Eliminates risk of tin whisker growth-induced short circuits in high-reliability, long-life applications |
Applications
| Laptop AC Adapter | Industrial DC/DC Converter |
|---|---|
Use Scenario: Rectifying 100–240 VAC input after bridge rectification and PFC stage in compact 65 W laptop adapters. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous secondary-side conduction with minimal conduction loss. Use Value: 0.84 V forward drop at 15 A reduces heat generation by ~1.5 W vs. standard silicon diodes, enabling smaller heatsinks and higher power density. | Use Scenario: Output rectification in isolated 48 V to 12 V telecom DC/DC modules operating at 200 kHz switching frequency. IC Role / Device Role / Timing Role: High-speed, low-loss secondary-side rectifier handling continuous 12 A load with transient surges. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast voltage transitions, ensuring stable regulation under dynamic load steps. |
| LED Driver Power Supply | Automotive Infotainment PSU |
Use Scenario: Secondary-side rectification in constant-current LED drivers powering streetlight arrays with wide ambient temperature range (-40°C to +85°C). IC Role / Device Role / Timing Role: High-efficiency Schottky rectifier delivering stable output under variable thermal conditions. Use Value: 150°C max junction temperature and low 500 µA reverse leakage at 25°C ensure consistent lumen output and reduced thermal derating across operating life. | Use Scenario: Input rectification in 12 V automotive infotainment systems subjected to load dump pulses and cold-crank conditions. IC Role / Device Role / Timing Role: Robust front-end rectifier with 150 A surge capability and guard ring protection. Use Value: Guard ring structure withstands 120 V load dump transients without degradation, meeting ISO 7637-2 Pulse 5a requirements. |
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-15BQ045PBF | Same 45 V VRRM, 15 A IF, but TO-220AC package (single anode, single cathode); RθJC = 4.0°C/W | Requires separate cathode routing; less suitable for center-tapped transformer topologies | Select when discrete anode/cathode isolation is required or when existing layout uses TO-220AC footprint |
| ON Semiconductor MBR1545CT | Identical electrical specs and ITO-220AB package, but lacks "-Y" suffix indicating halogen-free compound per IEC 61249-2-21 | Not compliant with halogen-free mandates in EU medical/consumer products | Select only for cost-sensitive industrial applications where halogen-free certification is not required |
Compared with VS-15BQ045PBF and MBR1545CT, the MBRF1545CT-Y uniquely combines dual common-cathode topology, halogen-free construction, and superior thermal resistance (3.5°C/W) - making it optimal for space-constrained, thermally demanding, and environmentally regulated power supplies.
Availability
MBRF1545CT-Y is available at Aetrix Electronics and suitable for laptop AC adapters, industrial DC/DC converters, and LED driver power supplies requiring stable component supply, full RoHS/halogen-free compliance, and verified thermal performance.
Supply support for MBRF1545CT-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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The MBRF15xxCT-Y series was developed specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion, emphasizing thermal robustness, surge resilience, and environmental compliance in compact form factors.
FAQ
What is the pin configuration of the MBRF1545CT-Y?
The MBRF1545CT-Y features a three-terminal ITO-220AB package with dual anodes connected to the metal tab and a common cathode shared between both diodes on Lead 1 and Lead 2. This common-cathode configuration supports center-tapped transformer rectification and simplifies PCB routing. The tab must be electrically isolated from the heatsink unless intentionally grounded.
Does the MBRF1545CT-Y support surface-mount assembly?
No, the MBRF1545CT-Y is through-hole mounted in the ITO-220AB package and requires mechanical screw or clamp attachment to a heatsink. Its leads are designed for wave or hand soldering per J-STD-002, and the exposed tab is not compatible with reflow profiles or SMT pick-and-place processes.
What is the maximum junction temperature rating for the MBRF1545CT-Y?
The MBRF1545CT-Y has a maximum junction temperature (TJ) rating of +150°C, validated across its full operating range. This allows sustained 15 A conduction in ambient temperatures up to +85°C when properly heatsinked, based on its 3.5°C/W junction-to-case thermal resistance and derating curves in the official TSC datasheet.
How does the guard ring in the MBRF1545CT-Y improve reliability?
The guard ring in the MBRF1545CT-Y mitigates edge breakdown under high dv/dt or transient overvoltage conditions by distributing electric field stress away from the active junction periphery. This structural feature extends operational lifetime in applications exposed to line surges or inductive switching noise, such as offline SMPS front ends.
Is the MBRF1545CT-Y halogen-free and RoHS compliant?
Yes, the MBRF1545CT-Y is fully RoHS compliant and halogen-free per IEC 61249-2-21, confirmed by Taiwan Semiconductor's material declarations. The "-Y" suffix explicitly denotes halogen-free molding compound, distinguishing it from non-suffixed variants like MBR1545CT that do not meet this requirement.
MBRF1545CT-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
MBRF1545CT-Y FAQ
1.How can I place an order for MBRF1545CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF1545CT-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 MBRF1545CT-Y reliable?
The price and inventory of MBRF1545CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF1545CT-Y is usually 5 days.
3.What payment methods are accepted for MBRF1545CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF1545CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF1545CT-Y?
MBRF1545CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF1545CT-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 MBRF1545CT-Y?
For technical support, including MBRF1545CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF1545CT-Y requirements.
6.How does Aetrix verify that MBRF1545CT-Y is sourced from the original manufacturer or authorized distributors?
All MBRF1545CT-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 MBRF1545CT-Y meets industry standards.
7.What is the process for return or replacement of MBRF1545CT-Y?
All MBRF1545CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBRF1545CT-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 MBRF1545CT-Y part is unused and in its original packaging.
Return procedure for MBRF1545CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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