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Vishay General Semiconductor - Diodes Division MBR6045WT
- Part No.:
- MBR6045WT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
MBR6045WT.pdf
- Description:
- DIODE ARR SCHOTT 45V 30A TO247AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,618
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Product details
Overview
MBR6045WT from Vishay is a center-tap dual Schottky rectifier in TO-247AC package, rated for 2 × 30 A average forward current per leg and 45 V maximum reverse voltage, with 0.55 V forward voltage drop at 30 A and 125 °C junction temperature-used in high-efficiency switching power supplies and freewheeling circuits.
For engineers reviewing the MBR6045WT datasheet, MBR6045WT pinout, MBR6045WT application, or MBR6045WT equivalent, key selection criteria include thermal resistance (1.0 °C/W per leg), surge capability (2900 A IFSM), low VF at elevated temperature, and center-tap cathode configuration for full-wave rectification without transformer center tap.
Technical Context
This device integrates two independent Schottky diode legs sharing a common cathode terminal, enabling full-wave center-tap rectification in AC/DC converters and synchronous buck secondary-side rectification. Its proprietary barrier technology supports reliable operation up to 150 °C TJ with low VF and moderate IR.
The TO-247AC package provides low thermal resistance (0.5 °C/W junction-to-case per package) and mechanical robustness via high-purity epoxy encapsulation and guard ring structure-critical for industrial-grade power conversion under thermal cycling and vibration stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) per leg | 30 A at TC = 122 °C, 50 % duty cycle - enables compact heatsink design in high-current DC-DC outputs |
| VRRM | 45 V - suitable for 36 V nominal bus systems with margin for transients |
| VF @ 30 A, 125 °C | 0.55 V - reduces conduction loss by ~30 % vs. standard silicon rectifiers at same current |
| RthJC per leg | 1.0 °C/W - allows direct mounting to heatsink with predictable thermal rise under continuous load |
| IFSM (5 µs) | 2900 A - withstands high-energy inductive turn-off surges in motor drives and SMPS startup |
| CT @ 5 V | 1400 pF - limits high-frequency switching noise and EMI in >100 kHz converters |
| dV/dt | 10,000 V/µs - prevents false triggering during fast voltage transients in hard-switched topologies |
Pinout & Package
Package: TO-247AC (JEDEC), center-tap configuration with common cathode terminal. Mounting torque: 6–12 kgf·cm (5–10 lbf·in). Approximate weight: 6 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode 1) | Anode of first Schottky leg | Connects to one AC winding end in center-tap transformer or half-bridge output node |
| Terminal 2 (Common Cathode) | Shared cathode for both legs | Output node for full-wave rectified DC; requires low-inductance connection to bulk capacitor |
| Terminal 3 (Anode 2) | Anode of second Schottky leg | Connects to opposite AC winding end or complementary switching node |
Key Features
| Feature | Design Value |
|---|---|
| 150 °C junction rating | Enables operation in sealed industrial enclosures without forced air cooling |
| Guard ring construction | Improves long-term reliability under repetitive avalanche stress in unclamped inductive loads |
| Low forward slope resistance (rt) | 7.3 mΩ - ensures linear VF increase with current, simplifying loss modeling |
| High-purity epoxy encapsulation | Provides IP67-equivalent moisture resistance and mechanical stability across -55 to +150 °C |
| Center-tap TO-247 package | Eliminates need for external cathode tie point, reducing PCB layout complexity and parasitic inductance |
Applications
| Switching Power Supplies | Motor Drive Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in 1–3 kW telecom and server PSUs operating at 100–500 kHz. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier providing full-wave output with shared cathode return path. Use Value: 0.55 V VF at 125 °C reduces conduction loss by 1.65 W per leg vs. 0.7 V alternatives, improving efficiency by 0.4–0.6 % at full load. | Use Scenario: Bidirectional freewheeling path in 3-phase IGBT inverters for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Center-tap Schottky clamp absorbing inductive kickback during IGBT turn-off. Use Value: 2900 A non-repetitive surge rating handles peak currents from 15–30 kW motor windings without derating. |
| Reverse Battery Protection | DC-DC Converter Output Stage |
Use Scenario: Polarity protection in 24/48 V vehicle-mounted electronics and battery-powered test equipment. IC Role / Device Role / Timing Role: Low-VF series-blocking diode preventing reverse current flow during battery swap or fault conditions. Use Value: 0.62 V VF at 25 °C limits voltage drop to <1.25 V at 30 A, preserving system headroom better than MOSFET-based ideal diodes in cost-sensitive designs. | Use Scenario: Synchronous rectification replacement in isolated 48 V–12 V buck converters for datacom and PoE injectors. IC Role / Device Role / Timing Role: Dual-anode Schottky delivering low-loss output rectification with single-cathode return to minimize ground bounce. Use Value: 1400 pF junction capacitance minimizes switching loss during dead-time transitions, supporting >300 kHz operation with <5 % efficiency penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay MBR6045CT | Same die, identical electrical specs, but TO-220AB package with separate cathodes (not center-tap); RthJC = 2.0 °C/W per leg | Requires external cathode tie; unsuitable for true center-tap transformer interfaces | Select MBR6045CT only when board space constraints prohibit TO-247 or when discrete cathode routing is acceptable |
| ON Semiconductor MURB6045CT | 60 A total IF(AV), 45 V VRRM, TO-247 package, but dual anode/dual cathode (non-center-tap); VF = 0.72 V @ 30 A, 125 °C | Needs external parallel cathode connection; higher VF increases conduction loss by ~0.17 V per leg | Choose MURB6045CT only if center-tap topology is not required and higher thermal resistance (1.25 °C/W) is acceptable |
Compared with MBR6045WT, MBR6045CT offers lower cost and smaller footprint but sacrifices thermal performance and eliminates native center-tap functionality, while MURB6045CT provides similar packaging but lacks integrated cathode commonality-requiring additional PCB traces and increasing layout-induced losses.
Availability
MBR6045WT is available at Aetrix Electronics and suitable for switching power supplies, motor drive freewheeling, reverse battery protection, and DC-DC converter output stages requiring stable component supply and industrial-grade reliability.
Supply support for MBR6045WT 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power rectification and high-reliability packaging.
The MBR6045WT belongs to Vishay's High Power Products Schottky rectifier line, engineered for high-current, high-temperature industrial power conversion where low VF, ruggedness, and thermal stability are critical.
FAQ
What is the maximum junction temperature rating for the MBR6045WT?
The MBR6045WT is rated for continuous operation up to 150 °C junction temperature, validated under industrial-level qualification standards. This rating is enabled by Vishay's proprietary barrier technology and high-purity epoxy encapsulation. The device maintains specified VF and leakage performance within this range, making MBR6045WT suitable for sealed, convection-cooled environments where ambient temperatures exceed 85 °C.
Does the MBR6045WT have a center-tap configuration, and how is it implemented physically?
Yes, the MBR6045WT features a true center-tap configuration with two anodes (Terminals 1 and 3) and a shared cathode (Terminal 2), all housed in a single TO-247AC package. This eliminates external wiring between cathodes and reduces parasitic inductance. The internal die layout places both Schottky junctions on a common substrate with bonded cathode metallization-confirmed in Vishay Document Number 93455, Figure 1 and pinout diagram on page 2.
What is the forward voltage drop of the MBR6045WT at 30 A and 125 °C?
The MBR6045WT exhibits a maximum forward voltage drop of 0.55 V per leg at 30 A and 125 °C junction temperature, as specified in the Electrical Specifications table (Document Number 93455, page 2). This value is measured under rectangular waveform conditions and reflects the device's optimized low-VF barrier design-critical for minimizing conduction losses in high-temperature power stages.
Can the MBR6045WT be used in reverse battery protection circuits?
Yes, the MBR6045WT is commonly deployed in reverse battery protection for 24 V and 48 V systems due to its low 0.62 V forward voltage at 25 °C and 30 A, which preserves system voltage headroom. Its 45 V VR rating provides margin against load dump transients, and the TO-247AC package ensures robust thermal handling during sustained fault currents-making MBR6045WT a proven choice in automotive and industrial backup power modules.
What is the thermal resistance from junction to case for the MBR6045WT?
The MBR6045WT has a maximum thermal resistance of 1.0 °C/W per leg (junction-to-case), and 0.5 °C/W for the entire package, as stated in the Thermal-Mechanical Specifications section (Document Number 93455, page 2). This low RthJC enables efficient heat transfer to external heatsinks and supports continuous 30 A per leg operation at case temperatures up to 122 °C-verified in Figure 5 of the datasheet.
MBR6045WT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-247-3
- 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):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 620 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AC
MBR6045WT FAQ
1.How can I place an order for MBR6045WT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR6045WT 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 MBR6045WT reliable?
The price and inventory of MBR6045WT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR6045WT is usually 5 days.
3.What payment methods are accepted for MBR6045WT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR6045WT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR6045WT?
MBR6045WT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR6045WT 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 MBR6045WT?
For technical support, including MBR6045WT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR6045WT requirements.
6.How does Aetrix verify that MBR6045WT is sourced from the original manufacturer or authorized distributors?
All MBR6045WT 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 MBR6045WT meets industry standards.
7.What is the process for return or replacement of MBR6045WT?
All MBR6045WT units undergo pre-shipment inspection (PSI). If there is an issue with MBR6045WT, 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 MBR6045WT part is unused and in its original packaging.
Return procedure for MBR6045WT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR6045WT Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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