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Diodes Incorporated SBR3040CT
- Part No.:
- SBR3040CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR3040CT.pdf
- Description:
- DIODE ARRAY SBR 40V 15A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
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Product details
Overview
SBR3040CT from Diodes Incorporated is a 30A dual common-cathode Super Barrier Rectifier rated for 40V peak reverse voltage, with typical forward voltage of 0.50V at 15A and 25°C, thermal resistance of 2°C/W (junction-to-case), and soft fast switching capability-used in high-efficiency DC/DC converters and OR-ing circuits in telecom power supplies.
For engineers reviewing the SBR3040CT datasheet, SBR3040CT pinout, SBR3040CT application, or SBR3040CT equivalent, key selection criteria include forward voltage drop at 15A, junction-to-case thermal resistance, peak repetitive reverse voltage rating, and TO-220AB package compatibility with heatsink mounting in high-current rectification designs.
Technical Context
This dual-element rectifier integrates two independent super barrier diodes in a single TO-220AB package with common cathode configuration, enabling synchronous rectification or parallel current handling per leg. Each leg supports 15A average forward current (30A total), with 200A non-repetitive surge capability and 2A peak repetitive reverse surge current.
Its patented super barrier structure delivers lower VF than Schottky diodes while maintaining higher temperature stability and reduced leakage-exhibiting only 0.5mA IR at 40V/25°C and 100mA at 40V/125°C-making it suitable for high-temperature industrial and telecom power stages where thermal derating is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking voltage per leg; defines safe operating limit in 48V input systems. |
| IO (per leg) | 15 A - Continuous DC current per diode element; enables 30A total output when both legs used in parallel. |
| VF @ 15A, 25°C | 0.50 V - Low conduction loss reduces power dissipation by ~7.5W per leg vs. standard Schottky alternatives. |
| RθJC | 2 °C/W - Junction-to-case thermal resistance enables direct heatsink mounting without thermal interface material in many applications. |
| IFSM | 200 A - 8.3ms half-sine surge rating allows robust startup and transient handling in switched-mode power supplies. |
| IR @ 40V, 125°C | 100 mA - Controlled leakage ensures stable operation under high-temperature bias conditions in enclosed enclosures. |
Pinout & Package
Package: TO-220AB, 3-terminal plastic case with isolated tab (cathode-connected tab), UL 94V-0 rated, matte tin-plated copper leadframe, weight ≈1.85g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first rectifying element; electrically isolated from tab and Pin 2. |
| Pin 2 (Center) | Cathode (Common) | Shared cathode node connected to metal tab; must be electrically tied to system ground or output rail. |
| Pin 3 (Right) | Anode 2 | Input terminal for second rectifying element; fully independent of Pin 1 except shared cathode path. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Technology | Enables 0.50V VF at 15A while sustaining <100mA IR at 125°C-superior thermal stability vs. Schottky diodes. |
| Soft Fast Switching | Minimizes EMI generation during turn-off; eliminates need for snubbers in 100–500kHz DC/DC topologies. |
| TO-220AB Common-Cathode Layout | Supports dual-input/single-output configurations such as input OR-ing or interleaved rectification without external wiring. |
| RoHS Compliant & Lead-Free | Meets EU Directive 2002/95/EC with annealed matte tin finish; compatible with Pb-free reflow profiles. |
Applications
| Telecom DC/DC Converters | Server VRM Output Rectification |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48V-to-12V isolated DC/DC modules for base station power systems. IC Role / Device Role / Timing Role: Dual-anode rectifier providing low-loss, high-current output path with shared cathode return to PCB ground plane. Use Value: 0.50V VF reduces conduction loss by 3.75W per leg versus 0.65V alternatives, improving efficiency by >1.2% at full load. | Use Scenario: OR-ing diode pair in redundant 12V power rails feeding CPU voltage regulator modules. IC Role / Device Role / Timing Role: Common-cathode configuration enables seamless current sharing between two independent 12V inputs. Use Value: Soft recovery minimizes voltage overshoot during hot-swap events, preventing false overvoltage shutdowns. |
| Industrial Motor Drive Power Supplies | LED Streetlight Driver Outputs |
Use Scenario: Input rectification stage in 3-phase rectifier + PFC front-end for variable frequency drives. IC Role / Device Role / Timing Role: High-current, high-temperature rectifier handling 15A continuous per leg under ambient up to 85°C. Use Value: 2°C/W RθJC allows direct bolt-down heatsinking, eliminating thermal vias and reducing board area by 25%. | Use Scenario: Output rectification in constant-current LED drivers powering 100W+ streetlight arrays. IC Role / Device Role / Timing Role: Dual-leg configuration supports split-output topology for improved current balancing across parallel LED strings. Use Value: 100mA IR at 125°C ensures stable regulation even inside sealed, thermally constrained outdoor housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH04 | Same 40V VRRM, but 30A total IO (single-element); VF = 0.52V @ 15A; RθJC = 2.5°C/W. | Single-diode construction requires external cathode tie for dual-input use; less compact than common-cathode layout. | Select when space permits discrete placement and thermal margin exceeds 0.5°C/W. |
| ON Semiconductor MBR3045CT | 45V VRRM, 30A total IO, VF = 0.57V @ 15A, RθJC = 2.2°C/W; standard Schottky, not super barrier. | Higher VF increases conduction loss by ~1.05W per leg; leakage rises to 200mA at 125°C. | Choose only if 5V extra reverse margin is required and thermal design accommodates higher IR. |
Compared with VS-30CPH04 and MBR3045CT, SBR3040CT offers superior thermal resistance (2°C/W), lower leakage at high temperature, and integrated common-cathode topology-reducing component count and PCB footprint in dual-input power architectures.
Availability
SBR3040CT is available at Aetrix Electronics and suitable for telecom DC/DC converters, server VRM output rectification, and industrial motor drive power supplies requiring stable component supply and long-term manufacturability.
Supply support for SBR3040CT 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 Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The SBR® Super Barrier Rectifier product line was developed to replace Schottky diodes in high-current, high-temperature power conversion applications-delivering lower forward voltage without sacrificing reverse leakage or thermal stability.
FAQ
Is the metal tab of the SBR3040CT electrically connected to any pin?
Yes-the metal tab is internally connected to Pin 2 (common cathode) and must be treated as an active circuit node. It is not electrically isolated; mounting to a heatsink requires insulating hardware unless the heatsink is referenced to the cathode potential.
What is the maximum allowable case temperature for continuous operation?
The SBR3040CT supports continuous operation up to +150°C junction temperature. With RθJC = 2°C/W, sustained 15A per leg requires case temperature ≤120°C to maintain TJ ≤150°C-verified via derating curve in Figure 1 of DS30972.
Can SBR3040CT replace standard Schottky rectifiers in existing designs?
Yes, with verification of thermal and electrical margins: its 40V VRRM matches common 45V Schottkys (e.g., MBR3045CT), and the TO-220AB footprint is identical. However, confirm cathode-tab grounding and validate leakage performance at elevated temperatures before drop-in replacement.
Does SBR3040CT support paralleling of both anode terminals for higher current?
No-Pins 1 and 3 are independent anodes with separate internal dies; paralleling them without external current-sharing resistors or matched thermal paths risks imbalance. The device is intended for dual-input or OR-ing use, not single-input current doubling.
SBR3040CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBR3040CT FAQ
1.How can I place an order for SBR3040CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR3040CT 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 SBR3040CT reliable?
The price and inventory of SBR3040CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR3040CT is usually 5 days.
3.What payment methods are accepted for SBR3040CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR3040CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR3040CT?
SBR3040CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR3040CT 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 SBR3040CT?
For technical support, including SBR3040CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR3040CT requirements.
6.How does Aetrix verify that SBR3040CT is sourced from the original manufacturer or authorized distributors?
All SBR3040CT 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 SBR3040CT meets industry standards.
7.What is the process for return or replacement of SBR3040CT?
All SBR3040CT units undergo pre-shipment inspection (PSI). If there is an issue with SBR3040CT, 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 SBR3040CT part is unused and in its original packaging.
Return procedure for SBR3040CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR3040CT 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
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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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