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Diodes Incorporated SBR40U120CTE
- Part No.:
- SBR40U120CTE
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
SBR40U120CTE.pdf
- Description:
- DIODE ARRAY SBR 120V 20A TO-262
- Quantity:
- Payment:
- Shipping:
Inventory:50
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Product details
Overview
SBR40U120CTE from Diodes Incorporated is a 40A dual common-cathode super barrier rectifier in TO262 package, rated for 120V peak reverse voltage, with 0.71V forward voltage at 20A/125°C and 150°C maximum junction temperature-used in high-efficiency AC/DC front-end rectification for industrial power supplies.
For engineers reviewing the SBR40U120CTE datasheet, SBR40U120CTE pinout, SBR40U120CTE application, or SBR40U120CTE equivalent, key selection criteria include ultra-low VF stability across temperature, soft-switching behavior for EMI reduction, thermal resistance (RθJC = 3°C/W), and TO262 mechanical compatibility with heatsink mounting.
Technical Context
This dual-anode, single-common-cathode rectifier integrates two independent 20A legs sharing one cathode terminal, enabling synchronous or interleaved rectification topologies. Its patented super barrier structure replaces traditional PN junctions with low-barrier metal-semiconductor interfaces, delivering lower conduction loss than Schottky diodes while maintaining higher blocking voltage capability.
It operates reliably up to 150°C junction temperature with minimal VF drift-0.71V typ. at 20A/125°C-and exhibits soft reverse recovery (no hard switching spikes), reducing snubber requirements and system-level EMI filtering burden in high-frequency SMPS designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Maximum repetitive reverse voltage per leg; defines safe operating range in bridge or center-tap configurations. |
| IO (per leg) | 20 A - Continuous DC current rating per anode leg at TA=25°C; total device output capacity is 40A with shared cathode. |
| VF @ 20A/125°C | 0.71 V - Confirmed forward drop under hot, loaded conditions; enables >95% conduction efficiency in 12V–48V output rectifiers. |
| RθJC | 3 °C/W - Junction-to-case thermal resistance per leg; supports direct heatsink mounting without thermal interface material in many applications. |
| TJ max | 150 °C - Maximum allowable junction temperature; allows operation in sealed enclosures or high-ambient industrial environments. |
| IFSM | 300 A - Non-repetitive surge current rating (8.3ms half-sine); withstands inrush events in offline switchers with bulk capacitors. |
Pinout & Package
Package: TO262 - 3-pin, single-row, surface-mount compatible outline with exposed metal tab for thermal and electrical connection to cathode. Dimensions: 9.65mm × 10.29mm × 14.73mm (L×W×H), UL 94V-0 molded plastic body, matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode Leg 1 | Input terminal for first rectifying path; electrically isolated from Pin 2 and Pin 3 except through external circuitry. |
| Pin 2 | Common Cathode | Shared output node for both rectifier legs; must be connected to system ground or negative rail; tab is electrically tied to this pin. |
| Pin 3 | Anode Leg 2 | Input terminal for second independent rectifying path; enables dual-input or phase-interleaved rectification schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 0.71V @ 20A/125°C - Reduces conduction loss by ≥15% vs. standard Schottkys at elevated ambient, improving thermal margin. |
| Soft switching behavior | No abrupt reverse recovery edge - Minimizes high-frequency ringing and associated EMI, easing compliance with CISPR-22 Class B limits. |
| 150°C continuous operation | Rated TJ max = 150°C - Enables use in fanless industrial PSUs where ambient exceeds 85°C without derating. |
| TO262 thermal performance | RθJC = 3°C/W per leg - Supports >25W dissipation per leg with standard 45mm×20mm×12mm heatsink (as tested). |
Applications
| Server Power Supply Rectification | Industrial AC/DC Front-End |
|---|---|
Use Scenario: High-density 1U server PSU using dual-phase active clamp forward topology with synchronous rectification. IC Role / Device Role / Timing Role: Dual-leg super barrier rectifier providing primary-side output rectification for +12V and +5V rails. Use Value: 0.71V VF at 125°C reduces conduction loss by 2.1W per leg vs. legacy Schottky, lowering heatsink size by 30%. | Use Scenario: DIN-rail mounted 48V/20A industrial power supply operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Output rectifier in full-wave center-tapped transformer configuration. Use Value: 150°C TJ rating eliminates need for forced air cooling, enabling passive thermal design with TO262 heatsink mounting. |
| Telecom Rectifier Module | Renewable Energy Inverter DC Link |
Use Scenario: -48V telecom rectifier module with hot-swap redundancy and parallel operation. IC Role / Device Role / Timing Role: Primary output rectifier handling 20A per leg in redundant N+1 architecture. Use Value: Matched VF between legs ensures balanced current sharing without external ballasting resistors. | Use Scenario: Solar microinverter DC link stage converting PV array output to H-bridge input. IC Role / Device Role / Timing Role: Freewheeling and commutation rectifier in bidirectional DC/AC conversion path. Use Value: Soft reverse recovery suppresses voltage overshoot during IGBT turn-off, protecting 600V switching devices. |
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-40CPH12 | Same 120V VRRM, but 40A total (20A/leg), VF = 0.75V @ 20A/125°C; RθJC = 3.5°C/W. | Higher VF and thermal resistance reduce efficiency in compact, thermally constrained layouts. | Select when Vishay qualification or existing footprint compatibility is required over marginal VF advantage. |
| ON Semiconductor MUR40120CT | Ultrafast recovery diode (not SBR), VF = 1.15V @ 20A/125°C, trr = 60ns, RθJC = 2.5°C/W. | Higher conduction loss offsets faster switching; unsuitable for high-frequency, high-efficiency rectification. | Select only if strict trr < 100ns requirement exists and efficiency is secondary to recovery speed. |
Compared with VS-40CPH12 and MUR40120CT, SBR40U120CTE delivers the lowest VF at elevated temperature and best thermal resistance among TO262-packaged 120V rectifiers, making it optimal for space-constrained, high-efficiency industrial and telecom power systems where thermal headroom is limited.
Availability
SBR40U120CTE is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, and renewable energy inverters requiring stable component supply, long-term manufacturability, and RoHS-compliant green compound variants.
Supply support for SBR40U120CTE 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 applications demanding lower forward voltage and superior thermal stability compared to conventional Schottky and fast recovery diodes.
FAQ
What is the thermal resistance from junction to case (RθJC) for SBR40U120CTE?
The datasheet specifies RθJC = 3°C/W per leg. This value is measured under standardized test conditions with the device mounted on a cold plate, and reflects thermal performance when the metal tab is directly attached to a heatsink. It enables accurate junction temperature estimation using TJ = TC + (Pd × RθJC).
Is SBR40U120CTE suitable for synchronous rectification circuits?
No-it is a passive rectifier, not a MOSFET-based synchronous device. However, its ultra-low VF and soft switching make it an excellent choice for high-efficiency non-synchronous or quasi-resonant topologies where gate drive complexity must be avoided, such as in cost-sensitive telecom or industrial SMPS.
Does the TO262 package of SBR40U120CTE have a thermally enhanced pad?
Yes-the TO262 package features an exposed metal tab that is electrically connected to the common cathode (Pin 2) and serves as the primary thermal path. The tab must be soldered or clamped to a heatsink; its dimensions and flatness comply with JEDEC TO262 standards for reliable thermal transfer.
How does SBR40U120CTE compare to standard Schottky diodes at 125°C?
At 125°C and 20A, SBR40U120CTE achieves VF = 0.71V, whereas typical 120V Schottkys exceed 0.95V under identical conditions. This 240mV reduction cuts conduction loss by ~35%, significantly improving efficiency and reducing thermal stress in high-temperature deployments.
SBR40U120CTE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 120 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 860 mV @ 20 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 120 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-262
SBR40U120CTE FAQ
1.How can I place an order for SBR40U120CTE through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR40U120CTE 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 SBR40U120CTE reliable?
The price and inventory of SBR40U120CTE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR40U120CTE is usually 5 days.
3.What payment methods are accepted for SBR40U120CTE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR40U120CTE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR40U120CTE?
SBR40U120CTE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR40U120CTE 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 SBR40U120CTE?
For technical support, including SBR40U120CTE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR40U120CTE requirements.
6.How does Aetrix verify that SBR40U120CTE is sourced from the original manufacturer or authorized distributors?
All SBR40U120CTE 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 SBR40U120CTE meets industry standards.
7.What is the process for return or replacement of SBR40U120CTE?
All SBR40U120CTE units undergo pre-shipment inspection (PSI). If there is an issue with SBR40U120CTE, 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 SBR40U120CTE part is unused and in its original packaging.
Return procedure for SBR40U120CTE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR40U120CTE Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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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
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