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Vishay General Semiconductor - Diodes Division MBR1545CT-1HE3/45
- Part No.:
- MBR1545CT-1HE3/45
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR1545CT-1HE3/45.pdf
- Description:
- DIODE ARR SCHOT 45V 7.5A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:9,419
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Product details
Overview
MBR1545CT-1HE3/45 from Vishay General Semiconductor is a dual common-cathode Schottky rectifier in TO-220AB package, rated for 45 V repetitive peak reverse voltage, 7.5 A average forward current per diode, and 150 A non-repetitive surge current. It features low forward voltage drop (0.55 V at 7.5 A, 25 °C), low leakage current (50 µA at 45 V, 25 °C), and operates up to 175 °C junction temperature - used in high-efficiency DC-DC converters and freewheeling paths in automotive-grade power supplies.
For engineers reviewing the MBR1545CT-1HE3/45 datasheet, MBR1545CT-1HE3/45 pinout, MBR1545CT-1HE3/45 application, or MBR1545CT-1HE3/45 equivalent, key selection criteria include its AEC Q101 qualification, 0.55 V VF at 7.5 A/25 °C, 175 °C TJ max, TO-220AB thermal resistance (3.0 °C/W), and HE3 suffix indicating high-reliability whisker-tested leads.
Technical Context
This dual Schottky rectifier uses high-barrier technology to maintain stable VF and low IR across elevated temperatures up to 175 °C. Its guardring structure provides overvoltage protection, while the common-cathode configuration enables independent anode switching with shared cathode return path.
Designed for high-frequency switching applications, it supports fast recovery (dV/dt = 10,000 V/µs) and exhibits low junction capacitance (typ. 200 pF at 4.5 V). The device meets J-STD-020 MSL Level 1 and is qualified to AEC Q101 for automotive underhood use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - maximum repetitive reverse blocking voltage; defines safe operating range in buck/flyback clamp circuits |
| IF(AV) per diode | 7.5 A - continuous DC current handling per anode; supports 15 A total device rating with dual independent paths |
| VF @ 7.5 A, 25 °C | 0.55 V - low conduction loss enabling >92 % efficiency in 5–12 V output DC-DC stages |
| IR @ 45 V, 25 °C | 50 µA - minimal leakage ensures low standby power in battery-backed systems |
| TJ max | 175 °C - extended thermal capability allows operation in engine bay or sealed industrial enclosures without derating |
| RθJC | 3.0 °C/W - low thermal resistance from junction to case enables direct heatsink mounting for sustained 7.5 A loads |
| IFSM | 150 A - robust surge tolerance handles inrush in motor drive freewheeling and SMPS startup |
Pinout & Package
Package: TO-220AB - insulated plastic case with metal tab (pin 2) serving as heatsink interface and cathode connection; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky diode; connects to switching node in synchronous rectification or freewheeling path |
| Pin 2 | Cathode (common) | Shared cathode output; electrically tied to metal tab and must be isolated from chassis unless referenced to system ground |
| Pin 3 | Anode 2 | Input terminal for second Schottky diode; enables dual-output or phase-interleaved converter topologies |
Key Features
| Feature | Design Value |
|---|---|
| High-barrier Schottky architecture | Enables stable VF and IR performance up to 175 °C junction temperature - critical for under-hood automotive modules |
| Guardring overvoltage protection | Prevents edge breakdown during transient voltage spikes in 48 V automotive systems and industrial DC bus clamping |
| AEC Q101 qualification (HE3 suffix) | Validated reliability for automotive applications including engine control units and ADAS power supplies |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements in SMT assembly lines |
| J-STD-201 Class 2 whisker testing | Ensures long-term mechanical integrity of tin-plated leads in thermally cycled environments |
Applications
| Automotive DC-DC Converters | Industrial Freewheeling Diodes |
|---|---|
|
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in electric vehicles. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous rectification in interleaved buck topology. Use Value: 0.55 V VF minimizes conduction loss at 7.5 A per phase, improving overall converter efficiency by ≥3.2 % vs. standard silicon diodes. |
Use Scenario: Flyback energy recirculation in 24 V industrial PLC power supplies. IC Role / Device Role / Timing Role: Freewheeling path for inductive load current during MOSFET off-time. Use Value: 150 A IFSM withstands repeated inductive kickback surges without degradation, extending system lifetime. |
| USB-C PD Power Delivery | Polarity Protection Circuits |
|
Use Scenario: Output rectification in compact 100 W USB-C PD adapters with GaN FETs. IC Role / Device Role / Timing Role: High-frequency output rectifier operating at 200–500 kHz switching frequency. Use Value: Low junction capacitance (200 pF) and fast dV/dt (10,000 V/µs) prevent switching losses and ringing in high-speed designs. |
Use Scenario: Reverse-voltage protection on 5–24 V input rails for embedded controllers. IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse current flow. Use Value: 50 µA IR at 45 V ensures <1 µW standby dissipation, preserving battery life in always-on IoT nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1545CGY | Same 45 V VRRM, 7.5 A IF(AV)/diode, but TO-220AC package (non-insulated tab); RθJC = 3.5 °C/W | Lacks isolation between tab and cathode; requires insulating hardware for heatsink mounting | Select when cost-sensitive industrial designs allow non-isolated thermal interface and JEDEC-standard footprint compatibility |
| ON Semiconductor MBR1545CT | Identical electrical specs but E3 suffix (consumer grade); not AEC Q101 qualified; JESD201 Class 1A whisker test only | Not approved for automotive underhood use; limited to commercial temperature range (-40 to +125 °C) | Choose for cost-driven consumer power adapters where AEC Q101 and 175 °C operation are unnecessary |
Compared with STPS1545CGY and ON Semiconductor MBR1545CT, the MBR1545CT-1HE3/45 uniquely combines AEC Q101 qualification, 175 °C operation, and TO-220AB insulation - making it the only option qualified for automotive-grade DC-DC converters requiring both reliability and thermal headroom.
Availability
MBR1545CT-1HE3/45 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial freewheeling circuits, and USB-C PD power adapters requiring stable component supply, long-lifecycle support, and traceable AEC Q101-compliant sourcing.
Supply support for MBR1545CT-1HE3/45 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in power rectifiers, MOSFETs, and optoelectronics with emphasis on high-reliability, high-efficiency solutions.
The MBR1545CT-1HE3/45 belongs to Vishay's high-temperature Schottky rectifier family, engineered specifically for automotive and industrial power conversion where thermal stability, surge robustness, and AEC Q101 compliance are mandatory.
FAQ
What does the "HE3" suffix mean in MBR1545CT-1HE3/45?
The HE3 suffix in MBR1545CT-1HE3/45 indicates high-reliability qualification: it meets AEC Q101 for automotive use and passes JESD201 Class 2 whisker testing. This distinguishes it from E3-suffix variants (Class 1A, consumer grade). The MBR1545CT-1HE3/45 is rated for operation up to 175 °C and intended for under-hood and industrial environments demanding proven long-term reliability.
Is MBR1545CT-1HE3/45 pin-compatible with standard TO-220AB dual diodes?
Yes - MBR1545CT-1HE3/45 uses the standard TO-220AB outline with pin 1 (Anode 1), pin 2 (Common Cathode/Tab), and pin 3 (Anode 2), matching JEDEC TO-220AB mechanical dimensions and lead spacing. Its metal tab is electrically connected to the cathode, requiring appropriate isolation if mounted to a grounded heatsink - consistent with industry-standard dual common-cathode Schottky layouts.
What is the maximum junction temperature and thermal resistance of MBR1545CT-1HE3/45?
The MBR1545CT-1HE3/45 has a maximum junction temperature (TJ max) of 175 °C and a junction-to-case thermal resistance (RθJC) of 3.0 °C/W per diode. These values are measured under specified test conditions and enable sustained 7.5 A per diode operation with proper heatsinking - critical for automotive and industrial applications where ambient temperatures exceed 105 °C.
Does MBR1545CT-1HE3/45 support high-frequency switching above 100 kHz?
Yes - MBR1545CT-1HE3/45 is optimized for high-frequency operation with dV/dt capability of 10,000 V/µs and typical junction capacitance of 200 pF at 4.5 V. Its low stored charge and fast recovery characteristics make it suitable for switch-mode power supplies operating up to 1 MHz, including GaN-based USB-C PD adapters and multiphase DC-DC converters where switching losses must be minimized.
How does the guardring feature improve reliability in MBR1545CT-1HE3/45?
The guardring in MBR1545CT-1HE3/45 prevents premature edge breakdown during voltage transients by controlling electric field distribution at the silicon periphery. This enhances ruggedness against repetitive 45 V reverse surges and improves long-term reliability in automotive 48 V systems and industrial DC bus clamping - directly contributing to the device's AEC Q101 qualification and 150 A IFSM rating.
MBR1545CT-1HE3/45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 7.5A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MBR1545CT-1HE3/45 FAQ
1.How can I place an order for MBR1545CT-1HE3/45 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1545CT-1HE3/45 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 MBR1545CT-1HE3/45 reliable?
The price and inventory of MBR1545CT-1HE3/45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1545CT-1HE3/45 is usually 5 days.
3.What payment methods are accepted for MBR1545CT-1HE3/45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1545CT-1HE3/45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1545CT-1HE3/45?
MBR1545CT-1HE3/45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1545CT-1HE3/45 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 MBR1545CT-1HE3/45?
For technical support, including MBR1545CT-1HE3/45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1545CT-1HE3/45 requirements.
6.How does Aetrix verify that MBR1545CT-1HE3/45 is sourced from the original manufacturer or authorized distributors?
All MBR1545CT-1HE3/45 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 MBR1545CT-1HE3/45 meets industry standards.
7.What is the process for return or replacement of MBR1545CT-1HE3/45?
All MBR1545CT-1HE3/45 units undergo pre-shipment inspection (PSI). If there is an issue with MBR1545CT-1HE3/45, 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 MBR1545CT-1HE3/45 part is unused and in its original packaging.
Return procedure for MBR1545CT-1HE3/45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR1545CT-1HE3/45 Tags
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