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Diodes Incorporated SBRT05U20LPQ-7B
- Part No.:
- SBRT05U20LPQ-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
SBRT05U20LPQ-7B.pdf
- Description:
- DIODE SBR 20V 500MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,398
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Product details
Overview
SBRT05U20LPQ from Diodes Incorporated is a 20 V, 0.5 A Trench Super Barrier Rectifier (SBR®) in a DFN1006-2 package, featuring ultra-low VF (0.39 V max at 0.5 A), 0.05 mA IR max at 20 V/25°C, and AEC-Q101 qualification. It serves as a high-efficiency freewheeling or reverse-polarity protection diode in space-constrained DC-DC converters.
For engineers reviewing the SBRT05U20LPQ datasheet, SBRT05U20LPQ pinout, SBRT05U20LPQ application, or SBRT05U20LPQ equivalent, key selection criteria include forward voltage stability across temperature, low leakage at 125°C, soft-switching behavior for EMI reduction, and DFN1006 footprint compatibility with high-density PCB layouts.
Technical Context
This SBR rectifier uses patented trench-based super barrier technology to achieve lower VF than Schottky diodes while maintaining superior thermal stability of reverse leakage-IR remains ≤10 µA at 125°C and VR = 20 V. Its soft, fast switching (tRR ≤ 15 ns under 10 mA conditions) minimizes voltage overshoot during turn-off in inductive flyback paths.
The device operates up to +150°C junction temperature and exhibits RθJA = 236°C/W on FR-4 with minimum pad layout. Total capacitance is 14 pF at 1 MHz and VR = 20 V, supporting high-frequency switching in compact power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; enables use in 12 V rail protection and 5–12 V DC-DC outputs. |
| IO(AV) | 0.5 A - Average forward current rating; supports continuous operation in low-power SMPS secondary-side rectification. |
| VF Max | 0.39 V @ 0.5 A, 25°C - Ultra-low conduction loss; reduces power dissipation by >30% vs. standard Schottky diodes at same current. |
| IR Max | 0.05 mA @ 20 V, 25°C; 10 µA @ 20 V, 125°C - Stable leakage ensures reliability in automotive ambient environments. |
| tRR | 15 ns - Fast, soft recovery limits ringing and EMI in high-dV/dt switching nodes. |
| RθJA | 236°C/W - Thermal resistance defines power derating; usable up to ~0.21 W at TA = 85°C before exceeding TJ(max). |
Pinout & Package
Package: X1-DFN1006-2 (1.0 × 0.6 mm, 0.25 mm height), surface-mount, lead-free, halogen-free, RoHS-compliant. Cathode identified by dot marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to input/source side in rectifier or freewheeling path; requires low-inductance trace routing. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked with dot; ties to output/load or ground return; critical for polarity protection orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 0.32 V typ @ 0.5 A, 25°C - Enables >95% efficiency in 3.3–12 V buck converter outputs with minimal heatsinking. |
| AEC-Q101 qualified | Qualified for automotive-grade reliability - supports under-hood and infotainment power rails requiring PPAP documentation. |
| Soft switching | tRR ≤ 15 ns with controlled di/dt - Reduces radiated emissions in noise-sensitive USB-C PD or LED driver designs. |
| +150°C TJ max | Rated for full current delivery up to 150°C junction - eliminates derating concerns in sealed enclosures or high-ambient industrial modules. |
Applications
| SMPS Secondary-Side Rectification | Reverse Polarity Protection |
|---|---|
Use Scenario: Low-voltage output stage of isolated flyback or forward converter supplying 3.3 V/0.5 A to microcontroller subsystems. IC Role / Device Role / Timing Role: Unidirectional current path enabling efficient AC-to-DC conversion while minimizing conduction loss. Use Value: 0.39 V VF reduces rectifier loss to <200 mW, lowering thermal stress versus 0.5 V Schottky alternatives. | Use Scenario: Input protection for USB-powered IoT sensor node accepting 5 V supply from external adapter. IC Role / Device Role / Timing Role: Series-connected anode-to-input, cathode-to-system rail; blocks reverse current if connector is miswired. Use Value: 0.05 mA IR at 25°C and 10 µA at 125°C prevents battery drain or latch-up in always-on edge devices. |
| Freewheeling Diode in Buck Converter | DC-DC Converter Output Clamp |
Use Scenario: Freewheel path for 1 MHz synchronous buck regulator driving FPGA I/O bank (1.2 V/0.4 A). IC Role / Device Role / Timing Role: Provides low-loss current recirculation during high-side FET off-time; complements control loop timing. Use Value: Soft recovery (tRR ≤ 15 ns) suppresses voltage spikes that could trigger false overvoltage shutdown. | Use Scenario: Clamp diode across output inductor in boost converter powering white LED string (24 V output). IC Role / Device Role / Timing Role: Limits inductive kickback during switch turn-off; defines peak clamp voltage at VOUT + VF. Use Value: 20 V VRRM safely clamps transients up to 20 V without avalanche breakdown or parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT05U20LPSQ-7B | Same die, but with enhanced moisture sensitivity level (MSL 1) and tighter VF distribution (0.35 V max @ 0.5 A). | Preferred for high-reliability automotive modules requiring extended reflow tolerance and tighter parametric consistency. | Select when MSL-1 compliance and tighter VF binning are required for PPAP submission. |
| PS1040-7 | 0.4 A rating, 40 V VRRM, VF = 0.45 V max @ 0.4 A; SOD-123FL package (larger, 2.7 × 1.7 mm). | Suitable for higher-voltage 24 V systems but occupies 4× more board area and has higher conduction loss. | Choose only if 40 V blocking or legacy SOD-123 footprint is mandatory; not drop-in compatible. |
Compared with SBRT05U20LPSQ-7B, this part trades tighter VF control for standard MSL-1 handling; versus PS1040-7, it delivers 30% lower VF and 60% smaller footprint at the cost of reduced voltage rating-ideal for miniaturized 12 V and below power rails.
Availability
SBRT05U20LPQ is available at Aetrix Electronics and suitable for SMPS secondary-side rectification, reverse polarity protection, and freewheeling diode applications requiring stable component supply, automotive-grade reliability, and ultra-compact DFN packaging.
Supply support for SBRT05U20LPQ 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, specializing in high-performance power management, signal integrity, and protection solutions.
The Trench SBR product line targets high-efficiency, thermally robust rectification in space-constrained power supplies-designed specifically for automotive, industrial, and consumer DC-DC applications demanding low VF and stable high-temperature leakage.
FAQ
What is the maximum junction temperature and how does it affect design?
The SBRT05U20LPQ has a rated maximum junction temperature of +150°C. This allows full 0.5 A current operation in ambient temperatures up to +85°C when mounted per recommended pad layout (RθJA = 236°C/W). Exceeding TJ(max) risks irreversible degradation of the trench SBR structure and increased IR drift.
Is this diode suitable for automotive applications?
Yes-SBRT05U20LPQ is AEC-Q101 qualified and PPAP capable. Its 150°C TJ rating, stable IR up to 125°C, and green, halogen-free construction meet automotive requirements for under-dash and infotainment power rails, though SBRT05U20LPSQ-7B is preferred for formal PPAP submissions due to tighter VF binning.
How does its reverse recovery compare to standard Schottky diodes?
Unlike conventional Schottky diodes (which exhibit no true reverse recovery), this SBR achieves soft, controlled tRR ≤ 15 ns-enabling predictable turn-off behavior and reduced EMI in high-dV/dt circuits where Schottky parasitic capacitance causes ringing. It bridges performance between Schottky and fast recovery PN diodes.
Can it replace a standard 1N5817 in a 5 V supply?
Yes-SBRT05U20LPQ matches the 20 V VRRM and 0.5 A IO rating of 1N5817 but improves VF by ~0.15 V (typical), reducing conduction loss by >35%. However, its DFN1006-2 footprint requires PCB redesign; it is not a direct solder-down replacement without layout modification.
SBRT05U20LPQ-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- 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:
- 390 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 6 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 20 V
- Capacitance @ Vr, F:
- 14pF @ 20V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBRT05U20LPQ-7B FAQ
1.How can I place an order for SBRT05U20LPQ-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT05U20LPQ-7B 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 SBRT05U20LPQ-7B reliable?
The price and inventory of SBRT05U20LPQ-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT05U20LPQ-7B is usually 5 days.
3.What payment methods are accepted for SBRT05U20LPQ-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT05U20LPQ-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT05U20LPQ-7B?
SBRT05U20LPQ-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT05U20LPQ-7B 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 SBRT05U20LPQ-7B?
For technical support, including SBRT05U20LPQ-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT05U20LPQ-7B requirements.
6.How does Aetrix verify that SBRT05U20LPQ-7B is sourced from the original manufacturer or authorized distributors?
All SBRT05U20LPQ-7B 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 SBRT05U20LPQ-7B meets industry standards.
7.What is the process for return or replacement of SBRT05U20LPQ-7B?
All SBRT05U20LPQ-7B units undergo pre-shipment inspection (PSI). If there is an issue with SBRT05U20LPQ-7B, 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 SBRT05U20LPQ-7B part is unused and in its original packaging.
Return procedure for SBRT05U20LPQ-7B:
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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