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Diodes Incorporated SBR3040CT-G
- Part No.:
- SBR3040CT-G
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR3040CT-G.pdf
- Description:
- DIODE ARRAY SBR 40V 15A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,511
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Product details
Overview
SBR3040CT-G from Diodes Incorporated is a 40V, 30A dual common-cathode Super Barrier Rectifier in TO-220AB package, designed for high-efficiency DC/DC conversion and output rectification in switch-mode power supplies. It delivers low forward voltage (0.75V @ 15A, 125°C), soft fast switching, and stable operation up to +175°C junction temperature.
For engineers reviewing the SBR3040CT-G datasheet, SBR3040CT-G pinout, SBR3040CT-G application, or SBR3040CT-G equivalent, key selection criteria include forward voltage at elevated temperature, surge current rating (200A IFSM), thermal resistance (2°C/W RθJC), and RoHS-compliant green molding compound compliance.
Technical Context
This dual-diode rectifier integrates two independent SBR (Super Barrier Rectifier) die in a single TO-220AB thermally optimized package with common cathode configuration. Its patented barrier structure enables lower VF than Schottky diodes while maintaining superior high-temperature leakage performance and soft reverse recovery.
The device operates with rated average forward current of 30A total (15A per leg), supports 40V peak repetitive reverse voltage, and exhibits <10mA IR at 100V and 125°C - confirming robust blocking capability under thermal stress in industrial power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse voltage the device blocks reliably without breakdown in repetitive operation. |
| IO (Total) | 30 A - Total average rectified output current capacity across both legs, enabling high-power secondary-side rectification. |
| VF @ 15A, 125°C | 0.75 V - Confirmed forward drop at full-rated current and high junction temperature, directly reducing conduction loss in hot environments. |
| IFSM | 200 A - Non-repetitive surge current handling for transient overload protection during power-up or fault conditions. |
| RθJC | 2 °C/W - Junction-to-case thermal resistance enables efficient heat transfer to external heatsink, supporting sustained 30A operation with proper thermal design. |
| IR @ 40V, 125°C | ≤10 mA - Reverse leakage current at max rated voltage and high temperature, ensuring minimal standby power loss in high-temp applications. |
Pinout & Package
Package: TO-220AB - Insulated plastic case with integral heatsink tab, UL 94V-0 rated, matte tin-plated copper leadframe, 1.85g weight. Designed for through-hole mounting and direct heatsink attachment via mounting hole.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first diode leg | Connects to transformer secondary or switching node for independent current path. |
| Pin 2 (Cathode) | Common cathode terminal | Shared output node for both diodes; must be routed with low-inductance, high-current trace to output capacitor. |
| Pin 3 (Anode B) | Anode of second diode leg | Enables dual-phase or interleaved rectification; electrically isolated from Pin 1 except through shared cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Patented Super Barrier technology | Combines Schottky-like low VF with PN-junction-level thermal stability and leakage control. |
| Soft, fast switching | Minimizes EMI generation and voltage overshoot during turn-off, easing filter design in SMPS outputs. |
| Lead-free & RoHS compliant | Meets EU Directive 2011/65/EU with no exemptions required; compatible with Pb-free reflow and wave soldering. |
| Green molding compound | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb), satisfying stringent environmental compliance for industrial and telecom equipment. |
Applications
| Server Power Supply | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 48V–12V isolated buck-derived converters. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier delivering 30A total output with minimized conduction loss and thermal footprint. Use Value: 0.75V VF at 125°C reduces power loss by ~1.5W vs. standard Schottky alternatives under full load and high ambient. | Use Scenario: Output rectification in 24V input industrial PLC power modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: High-reliability discrete rectifier handling 15A per leg with guaranteed leakage <10mA at 125°C junction. Use Value: Stable performance over full industrial temperature range eliminates derating concerns in enclosed enclosures without forced air. |
| Telecom Rectifier Module | LED Driver Power Stage |
Use Scenario: 48V telecom rectifier board requiring high efficiency and long-term reliability in -40°C to +70°C outdoor cabinets. IC Role / Device Role / Timing Role: Dual-anode rectifier supporting parallel or interleaved topology to distribute thermal load across heatsink surface. Use Value: 2°C/W RθJC enables compact heatsink design while maintaining TJ <150°C under continuous 25A load. | Use Scenario: Constant-current LED driver output stage powering high-brightness arrays in street lighting fixtures. IC Role / Device Role / Timing Role: Low-VF rectifier minimizing voltage headroom loss between boost converter output and LED string. Use Value: 0.75V forward drop preserves >2V margin for current regulation circuitry at 15A drive current. |
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 |
|---|---|---|---|
| SBRT3040CT | Same electrical specs; uses standard (non-green) molding compound and Pb-containing finish. | Acceptable where halogen-free compliance is not mandated; slightly lower cost. | Select when RoHS exemption applies or legacy qualification allows non-green materials. |
| MBR3045CT | Higher VF (0.82V @ 15A, 25°C); higher IR at 125°C (up to 25mA); same TO-220AB package. | Less suitable for thermally constrained or high-ambient designs due to reduced thermal margin. | Choose only if supply chain constraints require immediate availability and thermal derating is acceptable. |
Compared with SBRT3040CT, SBR3040CT-G adds halogen/antimony-free compliance without sacrificing electrical performance; versus MBR3045CT, it provides measurably lower forward voltage and tighter leakage control at elevated temperature - critical for high-efficiency, high-reliability power systems.
Availability
SBR3040CT-G is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, and telecom rectifier modules requiring stable component supply, long-lifecycle support, and environmental compliance.
Supply support for SBR3040CT-G 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, manufacturing, and sales operations across Asia, Europe, and North America.
SBR3040CT-G belongs to the SBR® Super Barrier Rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion where Schottky limitations in leakage and thermal stability are unacceptable.
FAQ
What is the maximum junction temperature for continuous operation?
The SBR3040CT-G has an operating junction temperature range of –65°C to +175°C. For continuous 30A operation, thermal design must ensure TJ remains ≤175°C using the specified 2°C/W RθJC and appropriate heatsinking - typical design targets keep TJ ≤150°C for long-term reliability.
Is SBR3040CT-G pin-compatible with standard TO-220AB dual-diode rectifiers?
Yes - SBR3040CT-G uses the industry-standard TO-220AB outline with identical mechanical dimensions and pin configuration (Anode–Cathode–Anode). It replaces legacy parts like MBR3045CT or SBRT3040CT without PCB layout changes.
Does the "-G" suffix indicate RoHS compliance only, or does it affect electrical performance?
The "-G" suffix denotes halogen- and antimony-free green molding compound and lead-free finish, fully compliant with RoHS 2 (2011/65/EU). Electrical specifications - including VF, IR, and IFSM - are identical to non-G variants; no performance trade-offs are introduced.
Can SBR3040CT-G be used in synchronous rectification circuits?
No - SBR3040CT-G is a passive rectifier diode, not a MOSFET-based synchronous rectifier controller or driver. It functions as a unidirectional conduction element and requires no gate drive; it cannot replace active SR controllers but serves as the power-switching element in non-synchronous topologies.
SBR3040CT-G 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:
- Standard 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-G FAQ
1.How can I place an order for SBR3040CT-G through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR3040CT-G 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-G reliable?
The price and inventory of SBR3040CT-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR3040CT-G is usually 5 days.
3.What payment methods are accepted for SBR3040CT-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR3040CT-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR3040CT-G?
SBR3040CT-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR3040CT-G 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-G?
For technical support, including SBR3040CT-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR3040CT-G requirements.
6.How does Aetrix verify that SBR3040CT-G is sourced from the original manufacturer or authorized distributors?
All SBR3040CT-G 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-G meets industry standards.
7.What is the process for return or replacement of SBR3040CT-G?
All SBR3040CT-G units undergo pre-shipment inspection (PSI). If there is an issue with SBR3040CT-G, 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-G part is unused and in its original packaging.
Return procedure for SBR3040CT-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR3040CT-G Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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