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Diodes Incorporated SBRT05U20S3Q-7
- Part No.:
- SBRT05U20S3Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SBRT05U20S3Q-7.pdf
- Description:
- DIODE SBR 20V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,539
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Product details
Overview
SBRT05U20S3Q from Diodes Incorporated is a 20 V, 0.5 A Trench Super Barrier Rectifier (SBR®) in SOD323 package, featuring ultra-low VF (0.33 V @ 0.5 A, +25°C), 70 µA max IR at 20 V/+150°C, and AEC-Q101 qualification for automotive use in DC-DC converter freewheeling paths.
For engineers reviewing the SBRT05U20S3Q datasheet, SBRT05U20S3Q pinout, SBRT05U20S3Q application, or SBRT05U20S3Q equivalent, this part serves as a high-temperature-stable, low-loss rectifier for space-constrained power rails requiring <0.4 V forward drop and <100 µA leakage at 150°C.
Technical Context
This TrenchSBR device uses patented super-barrier technology to achieve Schottky-like forward voltage with significantly improved reverse leakage stability versus conventional Schottky diodes - especially above 125°C. Its 150°C junction rating and soft-switching behavior reduce EMI in high-frequency switching topologies.
It operates as a unidirectional, single-anode/cathode rectifier with no gate control or bidirectional conduction. The SOD323 package enables surface-mount integration into compact DC-DC modules where thermal resistance (RθJA = 365°C/W) and low parasitic capacitance (10 pF @ 1 V) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; sets safe operating limit in 12 V/24 V automotive rail clamping and polarity protection. |
| IO(AV) | 0.5 A - Continuous average forward current at +25°C ambient; derates to ~0.2 A at +100°C per Figure 1. |
| VF(MAX) | 0.40 V @ 0.5 A, +25°C - Enables <200 mW conduction loss at full load; critical for efficiency in portable and battery-fed converters. |
| IR(MAX) | 70 µA @ 20 V, +150°C - Low high-temp leakage preserves standby power integrity in under-hood automotive modules. |
| TJ(max) | +150°C - Rated junction temperature supports operation in engine-control units and ADAS power stages without forced cooling. |
| CJ | 10 pF @ 1 V - Low junction capacitance minimizes switching loss and noise coupling in >1 MHz DC-DC controllers. |
Pinout & Package
Package: SOD323 - 1.3 mm × 1.7 mm × 0.9 mm surface-mount plastic package with NiPdAu-plated copper leadframe, moisture sensitivity level 1, and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side of rectification path; must handle 10 A non-repetitive surge during startup transients. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output/load side; sustains 20 V reverse bias continuously and withstands avalanche energy per spec. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Forward Voltage Drop | VF = 0.28–0.40 V across 0.1–0.5 A range enables >95% efficiency in 3.3 V/5 V buck converter outputs. |
| Superior Reverse Avalanche Capability | Rated IFSM = 10 A (8.3 ms half-sine) ensures robustness against inductive kickback in motor-drive freewheeling. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per AEC standard - required for PPAP submission. |
| Soft, Fast Switching | No reverse recovery tail current; reduces EMI generation and eliminates snubber need in 500 kHz–2 MHz SMPS designs. |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Delivery Adapter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed between connector and LDO input. Use Value: Prevents damage from accidental battery reversal while adding <0.4 V dropout and <70 µA leakage at under-hood temperatures. | Use Scenario: Output rectification in synchronous-flyback secondary stage delivering 5–20 V at up to 3 A. IC Role / Device Role / Timing Role: Freewheeling diode paralleling synchronous MOSFET during dead-time intervals. Use Value: Soft switching suppresses voltage spikes that would otherwise stress GaN FETs and increase EMI filter size. |
| Industrial IoT Sensor Node | Medical Portable Infusion Pump |
Use Scenario: Input rectification for energy-harvesting circuit powered by piezoelectric or thermoelectric generator. IC Role / Device Role / Timing Role: Low-leakage AC-to-DC conversion element in ultra-low-power (<100 µA quiescent) charging path. Use Value: 6 µA IR at +25°C and stable leakage up to +150°C preserve harvested energy and extend battery-less operation. | Use Scenario: Polarity protection on main Li-ion battery input to motor driver and MCU power domain. IC Role / Device Role / Timing Role: Fail-safe series diode ensuring no reverse current flows during hot-swap or service disconnect. Use Value: AEC-Q101 qualification and halogen-free "Green" construction meet IEC 60601-1 safety and environmental compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-VF rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT05U20S3Q-13 | Same die, identical electrical specs; differs only in tape-and-reel packaging (10,000 pcs vs. 3,000 pcs). | No functional difference; used interchangeably where volume or reel size drives logistics choice. | Select -13 for high-volume production runs requiring fewer reel changes. |
| VBMS0520L-G3-08 | VF = 0.35 V @ 0.5 A, IR = 100 µA @ 20 V/+150°C; same SOD323 package but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial but not PPAP-critical programs. | Choose only if AEC-Q101 is not required and higher leakage is acceptable. |
Compared with SBRT05U20S3Q-13, the original -7 variant offers identical performance in a smaller reel format ideal for prototyping and low-volume builds; versus VBMS0520L-G3-08, it delivers tighter leakage control and formal automotive qualification - essential for safety-critical vehicle subsystems.
Availability
SBRT05U20S3Q is available at Aetrix Electronics and suitable for automotive body control modules, USB-C PD adapters, and industrial IoT sensor nodes requiring stable component supply despite its obsolete status - inventory is secured for legacy design support and end-of-life transition planning.
Supply support for SBRT05U20S3Q 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 TrenchSBR product line delivers high-efficiency, high-temperature rectifiers optimized for automotive power systems, server VRMs, and portable chargers where low VF and stable IR are mandatory.
FAQ
Is SBRT05U20S3Q still in active production?
No - Diodes Incorporated has officially discontinued SBRT05U20S3Q (marked "OBSOLETE – PART DISCONTINUED" in DS38942 Rev. 2-4). Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and documentation for ongoing production needs.
What is the maximum allowable junction temperature during continuous operation?
The absolute maximum rated junction temperature is +150°C. Derating begins at +25°C ambient per Figure 1: IO drops linearly to ~0.2 A at +100°C and ~0.1 A at +125°C. Thermal design must ensure RθJA × PD + TA ≤ 150°C.
Does SBRT05U20S3Q support bidirectional current flow?
No - it is a unidirectional rectifier. Current flows only from anode to cathode under forward bias. Reverse conduction is blocked up to VRRM = 20 V; any attempt to force reverse current exceeds its rating and risks permanent damage.
Can SBRT05U20S3Q replace a standard Schottky diode in a 5 V buck converter?
Yes - with advantages: lower VF improves efficiency, and superior high-temperature leakage stability prevents output droop in thermally stressed layouts. However, verify layout clearance for SOD323 pad dimensions and confirm no voltage overshoot exceeds 20 V during transient events.
SBRT05U20S3Q-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:
- Fast 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
SBRT05U20S3Q-7 FAQ
1.How can I place an order for SBRT05U20S3Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT05U20S3Q-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 SBRT05U20S3Q-7 reliable?
The price and inventory of SBRT05U20S3Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT05U20S3Q-7 is usually 5 days.
3.What payment methods are accepted for SBRT05U20S3Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT05U20S3Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT05U20S3Q-7?
SBRT05U20S3Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT05U20S3Q-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 SBRT05U20S3Q-7?
For technical support, including SBRT05U20S3Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT05U20S3Q-7 requirements.
6.How does Aetrix verify that SBRT05U20S3Q-7 is sourced from the original manufacturer or authorized distributors?
All SBRT05U20S3Q-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 SBRT05U20S3Q-7 meets industry standards.
7.What is the process for return or replacement of SBRT05U20S3Q-7?
All SBRT05U20S3Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBRT05U20S3Q-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 SBRT05U20S3Q-7 part is unused and in its original packaging.
Return procedure for SBRT05U20S3Q-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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