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Diodes Incorporated SBRT30A45CT
- Part No.:
- SBRT30A45CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBRT30A45CT.pdf
- Description:
- DIODE ARRAY SBR 45V 15A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,225
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Product details
Overview
SBRT30A45CT from Diodes Incorporated is a 30A dual common-cathode Trench Super Barrier Rectifier (SBR) rated for 45V reverse voltage, with 0.51V max forward voltage at 15A/25°C and 0.47V at 15A/125°C, designed for high-efficiency DC-DC output rectification in industrial power supplies and telecom rectifiers.
For engineers reviewing the SBRT30A45CT datasheet, SBRT30A45CT pinout, SBRT30A45CT application, or SBRT30A45CT equivalent, key selection criteria include low VF stability across temperature, <0.7mA IR at 125°C, TO-220AB thermal resistance of 1°C/W, and dual-leg configuration enabling interleaved or parallel output paths in high-current 12V/24V/48V systems.
Technical Context
This dual common-cathode SBR uses trench-based super barrier technology to achieve lower forward voltage than Schottky diodes while maintaining superior high-temperature reverse leakage performance. It operates as a synchronous rectifier replacement in secondary-side DC-DC conversion stages where thermal management and efficiency at elevated junction temperatures are critical.
The device supports per-leg average current up to 15A (30A total), withstands 240A non-repetitive surge, and delivers stable VF and IR characteristics from –55°C to +150°C - enabled by optimized epitaxial layer design and low-RθJC packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating range in 48V bus applications. |
| IO (per leg) | 15 A - Continuous average forward current per anode leg; enables 30A dual-leg output without external paralleling. |
| VF max | 0.51 V @ 15A, 25°C - Low conduction loss reduces heat generation in high-current rectification stages. |
| IR max | 0.4 mA @ 45V, 125°C - Exceptionally low high-temp leakage prevents thermal runaway in enclosed power modules. |
| RθJC | 1 °C/W (TO-220AB) - Enables direct heatsink mounting for efficient thermal dissipation in compact industrial PSUs. |
| IFSM | 240 A @ 8.3ms - Withstands inrush and transient surges typical in server PSU hot-swap and load-dump events. |
Pinout & Package
Packaged in industry-standard TO-220AB (lead-free, RoHS-compliant, UL 94V-0 molded plastic), with center-tab cathode connection and isolated anode pins for dual-leg operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Independent input path for first rectifier leg; electrically isolated from Pin 2 and Pin 3. |
| Pin 2 (Center) | Cathode (Common) | Shared cathode node for both legs; mounted to heatsink tab for thermal and electrical reference. |
| Pin 3 (Right) | Anode 2 | Independent input path for second rectifier leg; enables dual-phase or redundant output routing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 0.47 V @ 15A/125°C - Maintains efficiency in thermally constrained environments like sealed telecom bricks. |
| Stable high-temp reverse leakage | 0.4 mA @ 45V/125°C - Prevents current imbalance and thermal drift in multi-phase outputs. |
| Dual common-cathode topology | Two independent anodes sharing one cathode - simplifies PCB layout for dual-output or interleaved converters. |
| Robust thermal interface | 1°C/W RθJC with standard heatsink - allows >20W continuous dissipation without forced air in industrial enclosures. |
Applications
| Telecom AC-DC Rectifiers | Industrial 48V DC-DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 48V telecom rectifier modules delivering up to 1.5kW output. IC Role / Device Role / Timing Role: Dual-leg SBR replacing two discrete Schottkys to reduce conduction loss and footprint. Use Value: 0.51V VF at 25°C and 0.47V at 125°C lowers power loss by ~12% vs. legacy Schottky solutions under full load. | Use Scenario: Output rectification in isolated 48V-to-12V industrial DC-DC converters used in PLC and motor drive power stages. IC Role / Device Role / Timing Role: High-current, high-reliability rectifier with integrated thermal path to chassis ground. Use Value: 1°C/W RθJC and <0.4mA IR at 125°C enable stable operation without derating in 70°C ambient enclosures. |
| Server Power Supply Units | Renewable Energy Inverters |
Use Scenario: 12V/24V output stage in redundant, hot-swappable server PSUs requiring high surge tolerance. IC Role / Device Role / Timing Role: Dual-leg rectifier handling peak currents up to 240A during cold-start and load-step transients. Use Value: 240A IFSM rating ensures robustness against inrush without external snubbers or current limiting. | Use Scenario: Auxiliary power supply rectification in solar string inverters operating in outdoor cabinets with wide temperature swings. IC Role / Device Role / Timing Role: High-temperature-stable rectifier for control circuitry powering gate drivers and sensors. Use Value: Stable VF and IR across –40°C to +125°C ambient eliminates need for thermal compensation circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, low-VF rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT30U45CT | Same package and pinout; 0.49V VF max @ 15A/25°C; 0.45V @ 15A/125°C - slightly lower VF but identical thermal specs. | Optimized for ultra-low-loss designs where <20mV VF reduction justifies minor cost premium. | Select when prioritizing lowest possible conduction loss at 125°C over cost sensitivity. |
| MBR3045CT | Standard Schottky; 0.62V VF max @ 15A/25°C; 0.55V @ 15A/125°C; 10× higher IR at 125°C (4mA vs. 0.4mA). | Suitable for lower-ambient, non-enclosed applications where thermal runaway risk is minimal. | Choose only if board-level thermal margin exceeds 30°C and IR-induced imbalance is not a system concern. |
Compared with SBRT30U45CT, the SBRT30A45CT trades 20mV higher VF for broader qualification and lower cost; versus MBR3045CT, it delivers 10× lower high-temp leakage and 15% lower conduction loss - critical for sealed, high-power-density systems.
Availability
SBRT30A45CT is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifiers, and server PSUs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SBRT30A45CT 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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and communications markets.
The TrenchSBR product line targets high-current, high-temperature rectification applications where Schottky limitations in leakage and thermal stability impede reliability - delivering optimized VF/IR trade-offs via proprietary trench barrier technology.
FAQ
What is the maximum junction temperature and how is it validated?
The SBRT30A45CT is rated for TJ = –55°C to +150°C, verified through accelerated life testing and thermal characterization per JESD22-A108. The 150°C limit reflects sustained operation under worst-case RθJC and power dissipation conditions, with derating applied above 125°C ambient per Figure 3.
Can SBRT30A45CT be used in automotive applications?
No - SBRT30A45CT is not AEC-Q101 qualified. Diodes offers automotive-grade alternatives such as the SBRT30A45CTQ (AEC-Q101 qualified, PPAP-capable), which shares identical electrical specs but undergoes additional stress testing and lot traceability per IATF 16949 requirements.
Is the TO-220AB package electrically insulated?
No - the TO-220AB package has an electrically conductive metal tab (Pin 2, Cathode) that must be isolated from the heatsink using mica or polymer insulators unless the cathode node is at chassis ground potential. Thermal paste alone does not provide electrical isolation.
How does the dual common-cathode configuration affect PCB layout?
The dual-anode/common-cathode structure allows symmetrical, low-inductance routing of two input paths to a shared output node. This minimizes loop area in interleaved converters and avoids current imbalance caused by unequal trace lengths - critical for EMI compliance and thermal uniformity across both legs.
SBRT30A45CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- TrenchSBR
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 510 mV @ 15 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBRT30A45CT FAQ
1.How can I place an order for SBRT30A45CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT30A45CT 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 SBRT30A45CT reliable?
The price and inventory of SBRT30A45CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT30A45CT is usually 5 days.
3.What payment methods are accepted for SBRT30A45CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT30A45CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT30A45CT?
SBRT30A45CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT30A45CT 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 SBRT30A45CT?
For technical support, including SBRT30A45CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT30A45CT requirements.
6.How does Aetrix verify that SBRT30A45CT is sourced from the original manufacturer or authorized distributors?
All SBRT30A45CT 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 SBRT30A45CT meets industry standards.
7.What is the process for return or replacement of SBRT30A45CT?
All SBRT30A45CT units undergo pre-shipment inspection (PSI). If there is an issue with SBRT30A45CT, 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 SBRT30A45CT part is unused and in its original packaging.
Return procedure for SBRT30A45CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBRT30A45CT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
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.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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