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Vishay General Semiconductor - Diodes Division MBR2545CT
- Part No.:
- MBR2545CT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2545CT.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:9,890
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Product details
Overview
MBR2545CT from Diodes Incorporated is a 45 V, 30 A dual common-cathode Schottky barrier rectifier in TO-220AB package, featuring 0.82 V max forward voltage at 30 A and 25°C, 0.2 mA max reverse leakage at 45 V and 25°C, and 150 A non-repetitive surge capability - used for polarity protection and freewheeling in DC-DC converters and industrial power supplies.
For engineers reviewing the MBR2545CT datasheet, MBR2545CT pinout, MBR2545CT application, or MBR2545CT equivalent, key selection criteria include its low VF at high current, thermal resistance of 1.5°C/W (junction-to-case), TO-220AB mechanical compatibility, and AEC-Q101 qualification for reliability-critical power conversion stages.
Technical Context
This dual-diode Schottky rectifier integrates two independent anode terminals sharing one cathode terminal, enabling synchronous rectification or dual-path freewheeling in center-tapped topologies. Its guard ring die construction provides transient overvoltage robustness without external snubbers.
Designed for low-voltage, high-frequency operation (e.g., <1 MHz switching), it delivers high efficiency via minimal conduction loss and low junction capacitance (750 pF per element at 4 V reverse bias), with derating required above 130°C case temperature per the forward current curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe DC or peak AC reverse bias limit |
| IO @ TC=130°C | 30 A - Continuous average forward current with heatsink; sets minimum heatsink requirement |
| VF max @ 30A/25°C | 0.82 V - Forward voltage drop at rated current; directly determines conduction loss (24.6 W at 30 A) |
| IRM max @ 45V/25°C | 0.2 mA - Reverse leakage current; impacts standby power and thermal runaway risk in parallel arrays |
| IFSM (8.3ms) | 150 A - Non-repetitive surge rating; supports motor startup or capacitor charging transients |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; enables direct heatsink thermal modeling without interface pad assumptions |
| CT @ 1MHz/4V | 750 pF - Total capacitance per diode; limits high-frequency switching speed and EMI generation |
Pinout & Package
TO-220AB package: molded plastic case with UL 94V-0 flammability rating, bright tin-plated copper leads, and integral metal tab (Pin 2) serving as cathode connection and thermal path. Mounting hole centered on tab for heatsink screw attachment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Independent input for first diode path; electrically isolated from Pin 3 |
| Pin 2 | Cathode (Common) | Shared cathode node and thermal tab; must be electrically connected to system ground or return plane |
| Pin 3 | Anode 2 | Independent input for second diode path; electrically isolated from Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enables 1.0 A peak repetitive reverse surge current without external clamping, improving transient immunity in inductive load circuits |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood power modules |
| Low VF at high current | 0.82 V @ 30 A/25°C reduces conduction loss by ~35% vs. comparable silicon rectifiers, lowering thermal stress in compact designs |
| Halogen & antimony free | Meets "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb); supports RoHS 2 and ELV compliance without performance trade-offs |
Applications
| DC-DC Converter Freewheeling | Polarity Protection |
|---|---|
Use Scenario: Used as synchronous rectifier in 12 V → 5 V buck converter operating at 300 kHz. IC Role / Device Role / Timing Role: Dual-anode configuration allows independent control of two output phases while sharing cathode return path. Use Value: 0.82 V VF minimizes conduction loss during high-current discharge phase, improving efficiency by 2.1% over standard silicon diodes. | Use Scenario: Installed across input terminals of industrial PLC I/O module to prevent damage from reversed DC supply connections. IC Role / Device Role / Timing Role: Acts as series-blocking diode; conducts only during correct polarity, blocking reverse current flow. Use Value: 0.2 mA IR at 45 V ensures negligible standby leakage, avoiding false triggering of undervoltage lockout circuits. |
| Motor Drive Recirculation | Low-Voltage Inverter Output Stage |
Use Scenario: Placed across brushed DC motor windings in battery-powered power tools to clamp inductive kickback. IC Role / Device Role / Timing Role: Provides low-impedance path for stored magnetic energy during MOSFET turn-off. Use Value: 150 A IFSM withstands repeated 100 A motor stall surges without degradation, extending field reliability. | Use Scenario: Integrated into 24 V solar microinverter H-bridge output stage for bidirectional energy transfer. IC Role / Device Role / Timing Role: Functions as anti-parallel diode across each bridge leg, enabling reactive current circulation. Use Value: 750 pF CT per element limits displacement current at 50 kHz switching, reducing gate driver loading and EMI filter burden. |
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 IO, but VF = 0.75 V @ 30 A/25°C; RθJC = 1.7°C/W | Lower VF improves efficiency in thermally constrained layouts; higher thermal resistance requires larger heatsink area | Select when absolute minimum conduction loss is prioritized over thermal footprint |
| ON Semiconductor MBR3045CT | Identical VRRM, IO, VF (0.82 V), but IR = 0.5 mA @ 45 V/25°C; not AEC-Q101 qualified | Higher leakage may affect precision low-power standby circuits; lacks automotive reliability validation | Select for cost-sensitive commercial power supplies where AEC-Q101 is not mandated |
Compared with VS-30CPH045 and MBR3045CT, MBR2545CT offers the best balance of low VF, tight IR control, and automotive-grade qualification - making it optimal for industrial and automotive power stages requiring both efficiency and long-term reliability.
Availability
MBR2545CT is available at Aetrix Electronics and suitable for DC-DC converters, motor drive recirculation, polarity protection, and low-voltage inverter output stages requiring stable component supply and consistent parametric performance across production lots.
Supply support for MBR2545CT 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Dallas, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MBR25xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications.
FAQ
What is the maximum case temperature for continuous operation?
The MBR2545CT is rated for continuous operation up to +130°C case temperature, beyond which average forward current must be linearly derated per Figure 1 in the datasheet. At +150°C case temperature, the allowable IO drops to approximately 22 A, and operation above +175°C is prohibited due to material and junction integrity limits.
Can MBR2545CT be paralleled with another unit for higher current handling?
Parallel operation is not recommended without individual current-sharing resistors or active balancing, due to mismatched forward voltage characteristics between units. Even with matched batches, thermal coupling differences cause unequal current distribution, risking thermal runaway in one device. Use a single higher-rated part like MBR4045CT instead.
Is the TO-220AB package electrically insulated from the cathode terminal?
No - Pin 2 (the metal tab) is the common cathode terminal and is electrically conductive. The plastic body provides only mechanical insulation; electrical isolation requires mounting with insulating hardware (e.g., shoulder washer and nylon screw) or use of an isolated heatsink pad when the cathode must be floating relative to chassis ground.
Does the AEC-Q101 qualification cover both MBR2545CT and MBR2560CT variants?
Yes - both MBR2545CT and MBR2560CT share identical die construction, packaging, and qualification test reports per Diodes Incorporated's AEC-Q101 certification documentation. The qualification applies to the entire MBR25xxCT family, covering temperature cycling, high-temperature reverse bias, and ESD testing per stress test conditions defined in the AEC standard.
MBR2545CT 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):
- 15A
- 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MBR2545CT FAQ
1.How can I place an order for MBR2545CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2545CT 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 MBR2545CT reliable?
The price and inventory of MBR2545CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2545CT is usually 5 days.
3.What payment methods are accepted for MBR2545CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2545CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2545CT?
MBR2545CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2545CT 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 MBR2545CT?
For technical support, including MBR2545CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2545CT requirements.
6.How does Aetrix verify that MBR2545CT is sourced from the original manufacturer or authorized distributors?
All MBR2545CT 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 MBR2545CT meets industry standards.
7.What is the process for return or replacement of MBR2545CT?
All MBR2545CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR2545CT, 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 MBR2545CT part is unused and in its original packaging.
Return procedure for MBR2545CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR2545CT Tags
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BAV99-7-F
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BAT54S-7-F
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