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Vishay General Semiconductor - Diodes Division MBRB3045CTTRL
- Part No.:
- MBRB3045CTTRL
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRB3045CTTRL.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,120
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Product details
Overview
MBRB3045CTTRL from Vishay General Semiconductor is a dual common-cathode Schottky rectifier in TO-263AB package, rated for 45 V repetitive peak reverse voltage, 15 A average forward current per diode, and 200 A non-repetitive surge capability. It delivers low 0.60 V forward voltage at 20 A and 125 °C junction temperature, enabling high-efficiency operation in compact DC/DC converters and synchronous rectification circuits.
For engineers reviewing the MBRB3045CTTRL datasheet, MBRB3045CTTRL pinout, MBRB3045CTTRL application, or MBRB3045CTTRL equivalent, key selection criteria include its 1.5 °C/W typical thermal resistance per diode, guardring-enabled overvoltage protection, RoHS-compliant matte tin plating, and suitability for automotive-grade (AEC Q101 qualified) power conversion designs requiring stable thermal performance up to 150 °C.
Technical Context
This dual-diode Schottky rectifier integrates two independent anodes sharing a common cathode terminal, enabling freewheeling and polarity protection in half-bridge or dual-output topologies. Its guardring structure suppresses edge breakdown under transient overvoltage, while the TO-263AB thermally optimized package supports direct heatsink mounting with 10 in-lbs maximum torque.
The device operates across –65 °C to +150 °C junction temperature range and exhibits 10,000 V/µs voltage rate of change capability. With 1.0 mA max reverse leakage at 25 °C and 60 mA at 125 °C, it maintains low standby loss in high-frequency switching applications up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in buck converter freewheel paths. |
| IF(AV) per diode | 15 A - Continuous forward current rating per anode; enables 30 A total device output in parallel-anode configurations. |
| VF @ 20 A, 25 °C | 0.60 V - Low conduction loss reduces power dissipation by ~12 W vs. silicon diodes at same current. |
| IFSM | 200 A - Peak surge rating for 8.3 ms half-sine; withstands inrush in server PSU and motor drive clamp circuits. |
| RθJC per diode | 1.5 °C/W - Thermal resistance from junction to case; allows >25 W power dissipation with 40 °C case-to-heatsink ΔT. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in sealed industrial enclosures without forced air. |
| dV/dt | 10,000 V/µs - High voltage slew rate immunity prevents false turn-on in fast-switching GaN-based converters. |
Pinout & Package
TO-263AB surface-mount package with isolated heatsink tab (pin 2), two anode terminals (pins 1 and 3), and common cathode connection via exposed metal pad. Mounting pad layout complies with IPC-7351B standard for thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input node for first diode path; electrically isolated from heatsink and Pin 3. |
| Pin 2 | Heatsink Tab / Cathode Common | Exposed metal pad serving as common cathode and primary thermal path; must be soldered to PCB copper pour. |
| Pin 3 | Anode 2 | Input node for second diode path; independent of Pin 1 but shares cathode reference at Pin 2. |
Key Features
| Feature | Design Value |
|---|---|
| Guardring structure | Prevents premature edge breakdown during voltage transients, improving reliability in unregulated input stages. |
| Low VF at high TJ | 0.72 V @ 30 A, 125 °C - Maintains efficiency in thermally constrained environments like enclosed LED drivers. |
| AEC Q101 qualification | Validated for automotive power modules including body control units and ADAS camera power supplies. |
| MSL Level 1 rating | Reflow-compatible up to 245 °C peak; eliminates pre-bake requirement for high-volume SMT assembly. |
| RoHS & WEEE compliant | Meets EU directives with matte tin-plated leads; suitable for consumer and industrial end equipment. |
Applications
| Server DC/DC Converters | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Secondary-side synchronous rectification in 12 V → 3.3 V/5 V point-of-load converters. IC Role / Device Role / Timing Role: Freewheeling diode replacing MOSFETs in cost-sensitive designs; provides zero-voltage switching assist. Use Value: 0.60 V forward drop cuts conduction loss by 40 % versus standard Schottky alternatives, reducing thermal load on 2-layer PCBs. |
Use Scenario: Reverse-polarity protection and load-dump clamping in 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Dual-anode configuration enables independent protection for two power rails (e.g., MCU core and I/O). Use Value: 200 A surge rating absorbs ISO 7637-2 pulse 5a without derating; AEC Q101 qualification ensures field reliability. |
| Industrial Motor Drive Snubbers | Telecom Power Rectification |
|
Use Scenario: Clamp diode network across IGBTs in 3-phase inverter legs for regenerative braking energy recapture. IC Role / Device Role / Timing Role: Fast-recovery Schottky element absorbing inductive kickback with minimal stored charge. Use Value: 10,000 V/µs dV/dt rating prevents spurious conduction during 100 ns rise-time switching events. |
Use Scenario: Output rectification in 48 V telecom rectifiers feeding distributed 12 V bus architecture. IC Role / Device Role / Timing Role: Dual-diode topology supports redundant 12 V outputs with shared thermal management. Use Value: 1.5 °C/W RθJC enables 25 W dissipation with <15 °C rise above heatsink, simplifying thermal design in dense chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS3045CG | Same 45 V VRRM, 15 A IF(AV), but TO-220AC package; RθJC = 2.5 °C/W (vs. 1.5 °C/W for MBRB3045CTTRL). | Limited to lower-power applications due to higher thermal resistance; unsuitable for >18 W continuous dissipation. | Select when legacy through-hole assembly is required and thermal margin exceeds 10 °C. |
| ON Semi NRVB3045CTT4G | Identical TO-263AB footprint and 45 V/15 A rating, but no AEC Q101 qualification; IR = 2.0 mA @ 25 °C (vs. 1.0 mA for MBRB3045CTTRL). | Not approved for automotive use; higher leakage may affect standby efficiency in always-on systems. | Choose for cost-sensitive industrial power supplies where automotive qualification is unnecessary. |
Compared with STPS3045CG and NRVB3045CTT4G, MBRB3045CTTRL offers superior thermal performance and automotive-grade reliability-critical for space-constrained, high-temperature deployments where junction temperature stability directly impacts system lifetime.
Availability
MBRB3045CTTRL is available at Aetrix Electronics and suitable for server DC/DC converters, automotive body control modules, and industrial motor drive snubbers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MBRB3045CTTRL 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 ruggedness, thermal efficiency, and automotive qualification.
The MBRB3045CTTRL belongs to Vishay's high-current dual Schottky rectifier family designed specifically for high-frequency, high-efficiency power conversion in automotive, industrial, and computing applications where low VF and robust surge handling are critical.
FAQ
What is the maximum junction temperature rating for the MBRB3045CTTRL?
The MBRB3045CTTRL has a maximum junction temperature (TJ) rating of +150 °C, verified per Vishay Document Number 88677. This allows reliable operation in sealed enclosures and high-ambient environments such as engine bay-mounted ECUs or fanless server PSUs. Derating curves confirm 15 A per diode capability remains usable up to 125 °C case temperature.
Does the MBRB3045CTTRL support automotive qualification standards?
Yes, the MBRB3045CTTRL is AEC Q101 qualified, as explicitly stated in the "Note (1)" section of Vishay Document Number 88677. This certification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-making MBRB3045CTTRL suitable for safety-critical automotive power systems including body control modules and ADAS subsystems.
What is the thermal resistance from junction to case (RθJC) for the MBRB3045CTTRL?
The MBRB3045CTTRL has a typical thermal resistance of 1.5 °C/W per diode, measured from junction to case (RθJC), per the Thermal Characteristics table in Vishay Document Number 88677. This value applies specifically to the TO-263AB package variant and enables efficient heat transfer to PCB copper pours or external heatsinks without thermal interface material in many medium-power applications.
How is the pinout configured for the MBRB3045CTTRL in TO-263AB package?
The MBRB3045CTTRL uses a three-terminal TO-263AB layout: Pin 1 is Anode 1, Pin 2 is the common cathode/heatsink tab, and Pin 3 is Anode 2. The exposed metal pad (Pin 2) serves both electrical (cathode return) and thermal (primary heat path) functions and must be soldered to a large PCB copper area per Vishay's recommended mounting pad layout in Document Number 91000.
What is the forward voltage drop of the MBRB3045CTTRL at rated current and elevated temperature?
The MBRB3045CTTRL exhibits a maximum instantaneous forward voltage (VF) of 0.72 V at 30 A and 125 °C junction temperature, as specified in the Electrical Characteristics table of Vishay Document Number 88677. At 20 A and 25 °C, VF is 0.60 V-enabling high-efficiency operation in high-frequency DC/DC converters where conduction loss dominates total losses.
MBRB3045CTTRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- 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:
- 600 mV @ 20 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
MBRB3045CTTRL FAQ
1.How can I place an order for MBRB3045CTTRL through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRB3045CTTRL 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 MBRB3045CTTRL reliable?
The price and inventory of MBRB3045CTTRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRB3045CTTRL is usually 5 days.
3.What payment methods are accepted for MBRB3045CTTRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRB3045CTTRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRB3045CTTRL?
MBRB3045CTTRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRB3045CTTRL 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 MBRB3045CTTRL?
For technical support, including MBRB3045CTTRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRB3045CTTRL requirements.
6.How does Aetrix verify that MBRB3045CTTRL is sourced from the original manufacturer or authorized distributors?
All MBRB3045CTTRL 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 MBRB3045CTTRL meets industry standards.
7.What is the process for return or replacement of MBRB3045CTTRL?
All MBRB3045CTTRL units undergo pre-shipment inspection (PSI). If there is an issue with MBRB3045CTTRL, 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 MBRB3045CTTRL part is unused and in its original packaging.
Return procedure for MBRB3045CTTRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRB3045CTTRL Tags
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