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Diodes Incorporated SBR3U40P1-7
- Part No.:
- SBR3U40P1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
SBR3U40P1-7.pdf
- Description:
- DIODE SBR 40V 3A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:2,795
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Product details
Overview
SBR3U40P1-7 from Diodes Incorporated is a 40 V, 3.0 A Super Barrier Rectifier in PowerDI®123 package, engineered for high-efficiency DC-DC converters and AC-DC rectifiers. It delivers ultra-low forward voltage (0.47 V max at 3.0 A), 75 A non-repetitive surge capability, and operates up to +150°C junction temperature in automotive-grade AEC-Q101 qualified applications.
For engineers reviewing the SBR3U40P1-7 datasheet, SBR3U40P1-7 pinout, SBR3U40P1-7 application, or SBR3U40P1-7 equivalent, key selection criteria include forward voltage at rated current, reverse leakage at elevated temperature, surge robustness, thermal resistance (RθJS = 5°C/W), and AEC-Q101 qualification status for automotive power systems.
Technical Context
This Super Barrier Rectifier replaces conventional Schottky diodes in medium-current power conversion stages where low VF and high surge tolerance are critical. Its patented interlocking clip design enables 75 A IFSM while maintaining soft, fast switching with minimal reverse recovery charge.
The device uses a proprietary super barrier structure-distinct from planar Schottky or trench MOSFET-based designs-to achieve 0.34 V typical VF at 1.0 A and only 400 µA IR at 40 V/25°C, enabling higher efficiency than standard Schottkys without sacrificing ruggedness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum blocking voltage before avalanche; suitable for 24 V system bus rectification with margin. |
| IO(AV) | 3.0 A - Continuous average forward current at TA = +25°C with recommended PCB layout. |
| VF(max) | 0.47 V at IF = 3.0 A - Directly reduces conduction loss in high-current paths, improving converter efficiency by ~0.5–1.2% vs. standard Schottky. |
| IFSM | 75 A (8.3 ms half-sine) - Withstands inrush and transient surges in SMPS input stages without failure. |
| IR(max) | 400 µA at VR = 40 V, TA = +25°C - Low leakage preserves standby power integrity in always-on circuits. |
| TJ(max) | +150°C - Enables operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJS | 5°C/W - Low junction-to-solder thermal resistance allows effective heat transfer to copper pad, supporting compact thermal design. |
Pinout & Package
Package: PowerDI®123 - surface-mount, single-ended, cathode-band marked plastic package with matte tin-plated copper leadframe; UL 94V-0 rated, MSL Level 1, 0.018 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to source side (e.g., transformer secondary or switch node); accepts forward current flow into device. |
| Cathode | Output current terminal | Connected to output rail (e.g., bulk capacitor or regulator input); carries rectified current out of device. |
| Cathode Tab | Thermal & electrical return path | Exposed metal tab on bottom surface serves as primary thermal interface and low-inductance cathode connection to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at rated current | 0.47 V max @ 3.0 A reduces conduction loss by ≥15% versus comparable 40 V Schottkys, directly improving light-load efficiency. |
| Patented interlocking clip construction | Enables 75 A surge rating without bond-wire limitations-critical for handling start-up transients in automotive DC-DC modules. |
| AEC-Q101 qualified | Validated for automotive power electronics including body control modules and infotainment power supplies per stress test requirements. |
| +150°C operating junction temperature | Supports placement near hot components (e.g., MOSFETs, inductors) without derating, simplifying thermal layout in space-constrained modules. |
| Halogen- and antimony-free "Green" construction | Meets EU RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm-enabling compliance in global automotive and industrial programs. |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in engine control unit (ECU) power supply. IC Role / Device Role / Timing Role: Output rectifier replacing Schottky diode in synchronous or quasi-resonant topology. Use Value: 0.47 V VF minimizes conduction loss at 3 A load, reducing thermal stress on PCB and extending reliability under +125°C ambient. | Use Scenario: Secondary-side rectification in 48 V telecom brick supplying 12 V intermediate bus. IC Role / Device Role / Timing Role: Uncontrolled rectifier in flyback or forward converter output stage. Use Value: 75 A IFSM withstands repeated output short-circuit events during factory testing and field fault conditions. |
| AC-DC Adapter Outputs | LED Driver Secondary Rectification |
Use Scenario: 24 V/2.5 A output stage of universal-input wall adapter for PoE-powered devices. IC Role / Device Role / Timing Role: Primary rectifier in bridge configuration feeding bulk capacitor. Use Value: 400 µA IR at 40 V ensures <1 mW standby loss, meeting DOE Level VI and EU CoC v5 efficiency mandates. | Use Scenario: Constant-current LED driver for commercial lighting with 36 V string voltage. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback delivering 700 mA to LED load. Use Value: Soft switching behavior suppresses EMI generation, easing CISPR-15 Class B compliance without added snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT3U40P1-7 | Same die, identical electrical specs; differs only in tape-and-reel packaging (3000 vs. 5000 units/reel). | No functional difference; used interchangeably in automated assembly lines with compatible feeders. | Select based on line-side feeder compatibility and lot-size procurement needs. |
| SBRT3U40P1-13 | Identical electrical and thermal performance; differs in reel size (5000 units) and carrier tape width (12 mm vs. 8 mm). | Requires revalidation of pick-and-place nozzle and vision system calibration due to tape dimension change. | Prefer for high-volume production where larger reels reduce changeover frequency and operator intervention. |
Compared with SBRT3U40P1-7 and SBRT3U40P1-13, the SBR3U40P1-7 offers identical core performance but optimized for 3000-unit reels and 8 mm tape-making it ideal for pilot runs, NPI builds, and mixed-SKU lines requiring frequent material changes.
Availability
SBR3U40P1-7 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and AC-DC adapter designs requiring stable component supply, AEC-Q101 qualification, and consistent thermal performance across temperature extremes.
Supply support for SBR3U40P1-7 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, high-reliability power conversion in automotive, industrial, and computing applications-specifically addressing the need for lower VF, higher surge tolerance, and extended temperature operation beyond standard Schottky limits.
FAQ
What is the maximum allowable soldering temperature for SBR3U40P1-7?
The SBR3U40P1-7 is rated for lead-free reflow per JEDEC J-STD-020, with peak temperature of 260°C for ≤30 seconds. Its matte tin finish over copper leadframe ensures reliable wetting and intermetallic formation without degradation of the super barrier junction or molding compound integrity.
Does SBR3U40P1-7 require a heatsink in standard FR-4 layouts?
No external heatsink is required when mounted on a 2 oz. copper FR-4 PCB using Diodes Incorporated's recommended pad layout (X2 = 4.10 mm, Y1 = 1.50 mm). The 5°C/W RθJS and 100°C/W RθJA enable full 3.0 A operation at +70°C ambient without exceeding +150°C junction temperature.
How does SBR3U40P1-7 compare to standard Schottky rectifiers in reverse leakage?
At 40 V and +125°C, SBR3U40P1-7 exhibits ≤40 mA IR-comparable to high-performance Schottkys-but achieves this with significantly lower VF (0.47 V vs. 0.55–0.65 V). Its super barrier architecture avoids the high-temperature leakage runaway common in conventional Schottkys.
Is SBR3U40P1-7 suitable for synchronous rectification topologies?
No-it is a unidirectional, passive rectifier and cannot replace MOSFETs in synchronous rectification. However, its soft switching and low Qrr make it an excellent choice for quasi-resonant or LLC secondary-side rectification where gate drive complexity must be avoided.
SBR3U40P1-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 470 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR3U40P1-7 FAQ
1.How can I place an order for SBR3U40P1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR3U40P1-7 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 SBR3U40P1-7 reliable?
The price and inventory of SBR3U40P1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR3U40P1-7 is usually 5 days.
3.What payment methods are accepted for SBR3U40P1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR3U40P1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR3U40P1-7?
SBR3U40P1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR3U40P1-7 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 SBR3U40P1-7?
For technical support, including SBR3U40P1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR3U40P1-7 requirements.
6.How does Aetrix verify that SBR3U40P1-7 is sourced from the original manufacturer or authorized distributors?
All SBR3U40P1-7 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 SBR3U40P1-7 meets industry standards.
7.What is the process for return or replacement of SBR3U40P1-7?
All SBR3U40P1-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR3U40P1-7, 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 SBR3U40P1-7 part is unused and in its original packaging.
Return procedure for SBR3U40P1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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Diodes Incorporated
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