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Diodes Incorporated SBRT05U20S3-7
- Part No.:
- SBRT05U20S3-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SBRT05U20S3-7.pdf
- Description:
- DIODE SBR 20V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,441
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Product details
Overview
SBRT05U20S3 from Diodes Incorporated is a 20V, 0.5A trench super barrier rectifier in SOD323 package, featuring ultra-low forward voltage (0.33V max at 0.5A/25°C), 70µA max reverse leakage at 20V/150°C, and +150°C junction temperature rating. It serves as a high-efficiency freewheeling or polarity protection diode in compact DC-DC converters and battery-powered systems.
For engineers reviewing the SBRT05U20S3 datasheet, SBRT05U20S3 pinout, SBRT05U20S3 application, or SBRT05U20S3 equivalent, key selection criteria include forward voltage drop at operating current, high-temperature leakage stability, AEC-Q101 qualification, SOD323 footprint compatibility, and soft-switching behavior in low-loss power paths.
Technical Context
This device employs patented TrenchSBR technology to achieve lower VF than Schottky diodes while maintaining superior thermal stability of IR up to +150°C. Its soft, fast switching minimizes EMI in high-frequency SMPS topologies without requiring snubbers.
The SOD323 package enables high power density with 365°C/W junction-to-ambient thermal resistance on standard PCB copper, supporting continuous 500mA operation up to +85°C ambient when derated per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; defines safe DC/peak AC voltage limit before breakdown |
| IO(AV) | 0.5 A - Continuous average forward current rating at TA = +25°C; derates linearly to zero at +125°C ambient |
| VF(max) | 0.4 V - Max forward voltage at IF = 0.5A and TJ = +25°C; enables <200mW conduction loss at full load |
| IR(max) | 70 µA - Max reverse leakage at VR = 20V and TJ = +150°C; ensures minimal standby power loss in hot environments |
| TJ(max) | +150°C - Maximum junction temperature; supports operation in under-hood automotive or sealed industrial enclosures |
| IFSM | 10 A - Non-repetitive surge current for 8.3ms half-sine; withstands inrush in capacitor-input rectifiers |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors; suitable for passenger compartment applications |
Pinout & Package
Package: SOD323 - Surface-mount plastic case (1.30 × 1.70 × 0.30 mm), cathode-banded, RoHS-compliant NiPdAu-plated leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to input/source side in rectification or polarity protection; requires low-impedance trace for thermal relief |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output/load side; cathode band orientation must match PCB silkscreen for automated assembly verification |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 0.36–0.40 V at 0.5A/25°C and 0.5A/150°C - Reduces conduction loss by ≥30% vs. standard Schottky in thermally constrained layouts |
| Soft, fast switching | No reverse recovery peak current; <10 ns reverse recovery time - Eliminates snubber circuits and associated losses in 1–3 MHz DC-DC converters |
| Superior avalanche capability | Rated for repetitive unclamped inductive switching - Withstands energy transients in motor drive flyback paths without degradation |
| Green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); UL 94V-0 mold compound - Meets IPC-1752A environmental compliance reporting |
Applications
| SMPS DC-DC Converters | Reverse Polarity Protection |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 5V/3.3V buck converters operating at 1–2 MHz. IC Role / Device Role: Freewheeling diode replacing MOSFET gate drive complexity in cost-sensitive designs. Use Value: 0.4V VF enables >92% efficiency at 500mA load while eliminating gate driver layout constraints and shoot-through risk. | Use Scenario: Input protection for USB-C PD adapters and portable medical sensors powered from external supplies. IC Role / Device Role: Series-connected polarity guard between connector and LDO input. Use Value: 70µA IR at +150°C prevents >1% battery drain in always-on devices stored in hot vehicles or industrial cabinets. |
| General Switching Applications | Automotive Body Control Modules |
Use Scenario: Clamping and flyback suppression in relay drivers and solenoid interfaces. IC Role / Device Role: Inductive kickback absorber across 12V coil loads. Use Value: Avalanche-rated construction sustains 10A IFSM surges without parameter shift, enabling single-diode protection without TVS co-location. | Use Scenario: Power rail conditioning in door module ECUs exposed to under-dash temperatures up to +105°C ambient. IC Role / Device Role: Reverse-battery protection diode upstream of PMIC input. Use Value: AEC-Q101 qualification and stable IR below 30µA at +125°C junction ensure functional safety compliance per ISO 26262 ASIL-B subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT05U20T3G (ON Semiconductor) | Same 20V/0.5A rating; VF = 0.37V max at 0.5A/25°C; slightly higher IR (100µA @ 20V/150°C) | Lacks AEC-Q101 qualification; not approved for automotive under-hood use | Select when cost is primary constraint and automotive qualification is unnecessary |
| SS12 (Micro Commercial Components) | 20V/1A Schottky; VF = 0.5V max; IR = 500µA @ 20V/125°C; no trench structure | Higher conduction loss and thermal runaway risk above +100°C junction | Select only for non-thermal-critical, low-cost consumer applications with <+85°C ambient |
Compared with SBRT05U20T3G and SS12, the SBRT05U20S3 delivers lowest system-level power loss in thermally demanding applications due to its uniquely low VF/IR trade-off and automotive-grade reliability-making it optimal where efficiency, longevity, and qualification are jointly required.
Availability
SBRT05U20S3 is available at Aetrix Electronics and suitable for SMPS DC-DC converters, reverse polarity protection circuits, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SBRT05U20S3 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The TrenchSBR product line targets high-efficiency power conversion in space-constrained, thermally aggressive applications-including automotive, industrial, and portable electronics-by combining Schottky-like VF with silicon-diode thermal robustness.
FAQ
What is the maximum allowable PCB pad temperature during reflow soldering?
The SBRT05U20S3 is qualified for standard Pb-free reflow per J-STD-020, with peak temperature of 260°C for ≤30 seconds. Its SOD323 package and NiPdAu finish ensure reliable wetting and intermetallic formation without delamination or voiding when using recommended thermal profiles and stencil apertures from AP02001.
Does this diode require a heatsink in 0.5A continuous operation?
No heatsink is required. At 0.5A and 0.35V VF, power dissipation is ~175mW. With RθJA = 365°C/W on a 1-inch² 2oz copper pad, temperature rise is ~64°C - well within the +150°C TJ limit even at +85°C ambient. Thermal relief vias beneath the cathode pad further reduce effective RθJA.
How does its reverse recovery behavior compare to conventional Schottky diodes?
Unlike conventional Schottky diodes that exhibit minority-carrier injection and measurable reverse recovery charge (Qrr), the SBRT05U20S3 shows no Qrr spike in oscilloscope measurements due to its majority-carrier trench structure. This eliminates switching loss and EMI associated with reverse recovery, enabling cleaner waveforms in high-frequency SMPS without snubbers.
Is the SOD323 package compatible with automated optical inspection (AOI) systems?
Yes. The SOD323's standardized cathode band marking (green "V2" code per datasheet) and consistent 1.70mm body width enable reliable AOI detection. Its flat, coplanar leads and defined solder fillet geometry meet IPC-A-610 Class 2 criteria for automated visual defect classification, including tombstoning and insufficient solder coverage.
SBRT05U20S3-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 400 mV @ 500 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 70 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBRT05U20S3-7 FAQ
1.How can I place an order for SBRT05U20S3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT05U20S3-7 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 SBRT05U20S3-7 reliable?
The price and inventory of SBRT05U20S3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT05U20S3-7 is usually 5 days.
3.What payment methods are accepted for SBRT05U20S3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT05U20S3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT05U20S3-7?
SBRT05U20S3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT05U20S3-7 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 SBRT05U20S3-7?
For technical support, including SBRT05U20S3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT05U20S3-7 requirements.
6.How does Aetrix verify that SBRT05U20S3-7 is sourced from the original manufacturer or authorized distributors?
All SBRT05U20S3-7 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 SBRT05U20S3-7 meets industry standards.
7.What is the process for return or replacement of SBRT05U20S3-7?
All SBRT05U20S3-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBRT05U20S3-7, 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 SBRT05U20S3-7 part is unused and in its original packaging.
Return procedure for SBRT05U20S3-7:
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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