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Diodes Incorporated SBR1040CT
- Part No.:
- SBR1040CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR1040CT.pdf
- Description:
- DIODE ARRAY SBR 40V 5A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:50
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Product details
Overview
SBR1040CT from Diodes Incorporated is a 10A dual common-cathode super barrier rectifier in TO220AB package, rated for 40V peak repetitive reverse voltage, with typical forward voltage of 0.49V at 5A and 125°C, and soft fast switching capability optimized for high-efficiency DC/DC converters and automotive power supplies.
For engineers reviewing the SBR1040CT datasheet, SBR1040CT pinout, SBR1040CT application, or SBR1040CT equivalent, key selection criteria include its low VF stability over temperature, 120A non-repetitive surge rating, JEDEC-qualified reliability, RoHS-compliant lead-free finish, and thermal resistance of 2°C/W (junction-to-case) in TO220AB.
Technical Context
The SBR1040CT integrates two independent super barrier rectifier dies in a single TO220AB package with common cathode configuration, enabling synchronous rectification in center-tapped transformer topologies. Its patented SBR® technology replaces traditional Schottky structures with a low-barrier, low-leakage metal-semiconductor junction that maintains <0.55V VF up to +125°C while limiting IR to 100μA at 40V and +125°C.
This device operates within -65°C to +150°C junction temperature range and supports 2000V isolation (ITO220AB variant only). Derating curves confirm 10A average current capability at TA = 25°C, dropping to ~5.5A at TA = 85°C with heatsink, based on RθJC = 2°C/W and RθJA ≈ 30°C/W per leg.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum blocking voltage per leg; defines safe operation in 36V automotive systems with margin. |
| IO (per leg) | 5 A - Continuous DC current rating per anode; total device delivers 10A with shared cathode path. |
| VF @ 5A, 125°C | 0.49 V - Low conduction loss at elevated temperature; reduces heat generation in thermally constrained designs. |
| IFSM | 120 A - Peak surge withstand for 8.3ms half-sine; supports inrush current handling in SMPS input stages. |
| RθJC | 2 °C/W - Junction-to-case thermal resistance (TO220AB); enables direct heatsink mounting for high-power density layouts. |
| IR @ 40V, 125°C | 100 μA - Reverse leakage per leg; ensures minimal standby power loss in battery-backed systems. |
| Switching | Soft, fast recovery - Minimizes EMI and voltage overshoot during turn-off; eliminates need for snubbers in many 100–500kHz converters. |
Pinout & Package
Package: TO220AB - Insulated plastic case with copper leadframe, matte tin finish, UL 94V-0 rated, 1.85g weight, designed for vertical heatsink mounting via tab (cathode-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first rectifier die | Input terminal for first AC/DC path; electrically isolated from Pin 2 and tab. |
| Pin 2 (Anode 2) | Anode of second rectifier die | Input terminal for second AC/DC path; enables dual-input or center-tapped transformer use. |
| Tab (Cathode) | Common cathode connection | High-current output node; internally bonded to both dies; must be electrically isolated from heatsink unless system ground reference permits. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® Technology | Combines low VF of Schottky with leakage performance near PN diodes-enables 0.49V @ 125°C without compromising IR. |
| Soft Fast Switching | Controlled reverse recovery minimizes ringing and EMI in high-frequency SMPS, reducing filter component count. |
| JEDEC High Reliability Qualification | Qualified per AEC-Q standards for automotive-grade robustness, including HTOL, TC, and HAST testing. |
| RoHS & "Green" Compliance | Lead-free, halogen-free, antimony-free construction meets EU RoHS 3 and automotive environmental requirements. |
| Thermal Performance | 2°C/W RθJC allows >8W dissipation at ΔT = 16°C above heatsink-supports compact 10A power stages without forced air. |
Applications
| Automotive DC/DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck-derived converter in engine control units (ECUs) with wide ambient temperature range. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing MOSFETs in center-tapped topology to reduce gate drive complexity and conduction loss. Use Value: 0.49V VF at 125°C cuts conduction loss by ~35% vs. standard Schottky, improving efficiency from 89% to 92.5% at full load. | Use Scenario: Output rectification in 48V telecom power supply with 10A output and natural convection cooling. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier delivering 10A combined output with shared thermal path to heatsink. Use Value: 2°C/W RθJC enables 10A operation at TA = 70°C without fan, reducing BOM cost and acoustic noise. |
| LED Driver Power Stages | Server VRM Auxiliary Rails |
Use Scenario: Constant-current LED driver for commercial lighting with 36V bus and PWM dimming. IC Role / Device Role / Timing Role: Freewheeling diode in buck controller stage, conducting during low-side switch off-time. Use Value: Soft recovery suppresses voltage spikes across LEDs during 500kHz switching, eliminating need for TVS clamping. | Use Scenario: 12V auxiliary rail rectification in server VRM supplying FPGA I/O banks. IC Role / Device Role / Timing Role: High-current output rectifier operating continuously at 8A with tight thermal budget. Use Value: Stable VF over temperature prevents output droop during CPU thermal throttling cycles, maintaining ±1% regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-10BQ040 | Same 40V VRRM, 10A IO, but uses trench Schottky; VF = 0.52V @ 5A/125°C; IR = 200μA @ 40V/125°C. | Higher leakage increases standby loss in always-on modules; less suitable for battery-powered ECUs. | Prefer when lower cost is critical and leakage <200μA is acceptable. |
| ON Semiconductor MBR1045CT | Standard Schottky; VF = 0.58V @ 5A/25°C, degrades to 0.65V @ 125°C; IR = 500μA @ 40V/125°C. | Higher conduction loss and leakage reduce efficiency and thermal margin in high-temp environments. | Acceptable only in cost-sensitive, non-automotive applications with TA ≤ 60°C. |
Compared with VS-10BQ040 and MBR1045CT, the SBR1040CT delivers superior thermal stability of VF and lower IR-critical for automotive and industrial applications where efficiency and reliability at elevated temperatures are mandatory.
Availability
SBR1040CT is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, LED driver power stages, and server VRM auxiliary rails requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant manufacturing.
Supply support for SBR1040CT 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.
The SBR® super barrier rectifier product line targets high-efficiency power conversion in automotive, industrial, and computing applications where low VF, soft switching, and high-temperature reliability are essential.
FAQ
What is the maximum junction temperature for continuous operation?
The SBR1040CT has an operating junction temperature range of -65°C to +150°C. For continuous operation at rated current, thermal design must ensure TJ does not exceed +150°C under worst-case ambient and power dissipation conditions. With RθJC = 2°C/W and 10A output at 0.49V drop, 4.9W dissipation requires ≤141°C ΔT from case to ambient-achievable with appropriate heatsinking.
Is the TO220AB package electrically insulated?
No-the TO220AB package used in SBR1040CT has an electrically conductive metal tab that is internally connected to the common cathode. It is not isolated from the cathode terminal. For isolation, the ITO220AB variant provides 2000V AC isolation between terminals and heatsink, but SBR1040CT specifically uses the standard TO220AB.
How does SBR technology differ from standard Schottky rectifiers?
SBR® technology employs a proprietary barrier structure that achieves Schottky-like forward voltage (0.49V @ 125°C) while suppressing reverse leakage to just 100μA at 40V/125°C-roughly 1/5 that of comparable Schottkys. This is accomplished through controlled doping and interface engineering, not a simple metal-semiconductor junction.
Can SBR1040CT replace MBR1045CT in existing designs?
Yes, with qualification-SBR1040CT is pin-compatible with MBR1045CT in TO220AB and offers lower VF (0.49V vs. 0.65V @ 125°C) and significantly lower IR (100μA vs. 500μA), improving efficiency and thermal performance. However, layout review is required to verify cathode thermal path and ensure no unintended shorting due to lower VF-induced current redistribution.
SBR1040CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 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
SBR1040CT FAQ
1.How can I place an order for SBR1040CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1040CT 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 SBR1040CT reliable?
The price and inventory of SBR1040CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1040CT is usually 5 days.
3.What payment methods are accepted for SBR1040CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1040CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1040CT?
SBR1040CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1040CT 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 SBR1040CT?
For technical support, including SBR1040CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1040CT requirements.
6.How does Aetrix verify that SBR1040CT is sourced from the original manufacturer or authorized distributors?
All SBR1040CT 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 SBR1040CT meets industry standards.
7.What is the process for return or replacement of SBR1040CT?
All SBR1040CT units undergo pre-shipment inspection (PSI). If there is an issue with SBR1040CT, 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 SBR1040CT part is unused and in its original packaging.
Return procedure for SBR1040CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR1040CT 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
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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