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Diodes Incorporated SBR140S1FQ-7
- Part No.:
- SBR140S1FQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
SBR140S1FQ-7.pdf
- Description:
- DIODE SBR 40V 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,675
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Product details
Overview
SBR140S1FQ-7 from Diodes Incorporated is a 1A, 40V Super Barrier Rectifier (SBR®) in SOD123F package, featuring 0.51 V max forward voltage at 1 A and 0.1 mA max reverse leakage at 40 V and +25°C. It delivers low conduction loss and high-temperature stability for DC/DC converter boost diodes and blocking diodes in automotive power supplies.
For engineers reviewing the SBR140S1FQ-7 datasheet, SBR140S1FQ-7 pinout, SBR140S1FQ-7 application, or SBR140S1FQ-7 equivalent, key selection criteria include its AEC-Q101 qualification, 30 A non-repetitive surge rating, 12 ns reverse recovery time, 55 pF junction capacitance at 4 V, and thermal resistance of 95 °C/W on standard FR-4 PCB.
Technical Context
This SBR rectifier uses patented Super Barrier technology to achieve lower VF than Schottky diodes while maintaining higher reverse voltage capability and significantly reduced high-temperature leakage-critical for automotive under-hood applications operating up to +150°C junction temperature.
Its 40 V VRRM rating supports 12 V and 24 V automotive systems with margin; the 12 ns tRR enables efficient switching in high-frequency DC/DC converters; and its 35 °C/W RθJC allows effective heat transfer when mounted on small copper pads per JESD51-3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Withstands repetitive reverse voltage up to 40 V, suitable for 24 V nominal automotive bus with transient margin. |
| IO | 1 A average - Supports continuous rectification in compact DC/DC output stages without forced cooling. |
| VF Max | 0.51 V @ 1 A, +25°C - Reduces conduction loss to ≤0.51 W per diode, improving efficiency in high-duty-cycle boost circuits. |
| IR Max | 0.1 mA @ 40 V, +25°C - Ensures minimal standby power loss in always-on vehicle modules. |
| tRR | 12 ns - Enables stable operation in PWM converters switching above 500 kHz without excessive switching loss or ringing. |
| RθJA | 95 °C/W - Allows 1 A operation at +85°C ambient on standard 2.1×2.1 mm² copper pad without derating. |
| ESD HBM | 4000 V - Provides robust handling during automated assembly and board-level testing in production environments. |
Pinout & Package
Package: SOD123F - Surface-mount plastic package with cathode band marking, 0.015 g weight, UL 94V-0 molding compound, and matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in boost configuration; must be routed with low-inductance trace for high di/dt immunity. |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output/load side; cathode band identifies polarity for automated optical inspection and placement verification. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Rectifier (SBR®) Technology | Combines Schottky-like low VF with PN-junction-like high VRRM and low IR, eliminating trade-off between efficiency and reliability. |
| AEC-Q101 Qualified | Validated for automotive use with PPAP capability and IATF 16949 manufacturing-enables direct integration into safety-critical power rails. |
| High-Temperature Leakage Control | IR ≤ 3 mA @ 40 V, +125°C - Prevents thermal runaway in engine control units and ADAS ECUs exposed to under-hood temperatures. |
| Green Construction | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb) - Meets global environmental compliance requirements for Tier 1 automotive supply chain. |
Applications
| Automotive DC/DC Boost Converter | USB-C Power Delivery Input Protection |
|---|---|
|
Use Scenario: 12 V to 48 V bidirectional boost converter in mild hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous boost stage, conducting during low-side switch off-time. Use Value: 0.51 V VF minimizes power loss at 1 A load; 30 A IFSM withstands load dump transients without failure. |
Use Scenario: Reverse-polarity and overvoltage protection at USB-C PD port input. IC Role / Device Role / Timing Role: Blocking diode preventing backfeed from downstream 5–20 V rail into upstream source. Use Value: 40 V VRRM covers full PD 3.1 extended power range; 12 ns tRR avoids oscillation during hot-plug events. |
| Industrial PLC Power Input Stage | LED Driver Secondary-Side Rectification |
|
Use Scenario: 24 V AC/DC front-end rectification in programmable logic controller power supply. IC Role / Device Role / Timing Role: Half-wave rectifier feeding bulk capacitor; operates continuously at 85°C ambient. Use Value: 0.1 mA IR at +25°C and ≤3 mA at +125°C ensures stable no-load regulation and long capacitor life. |
Use Scenario: Secondary-side synchronous rectification replacement in isolated LED driver for street lighting. IC Role / Device Role / Timing Role: Low-loss output rectifier in flyback secondary winding. Use Value: 55 pF CT at 4 V reduces EMI generation; SOD123F footprint enables high-density layout in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT140S1FQ-7 | Same SBR die, but in SOD123 package (not SOD123F); RθJA = 100 °C/W vs. 95 °C/W. | Limited to lower ambient or pulsed-current use due to higher thermal resistance. | Select only if SOD123 footprint compatibility is required and thermal margin ≥10°C exists. |
| MBR140S1FQ-7 | Standard Schottky rectifier; VF = 0.55 V max @ 1 A, but IR = 0.5 mA @ 40 V, +25°C - 5× higher leakage. | Not qualified to AEC-Q101; unsuitable for automotive under-hood deployment. | Acceptable for cost-sensitive industrial applications where leakage and qualification are not critical. |
Compared with SBRT140S1FQ-7 and MBR140S1FQ-7, the SBR140S1FQ-7 provides superior thermal performance in the SOD123F package and AEC-Q101 assurance-making it the only choice for automotive-grade 40 V, 1 A rectification where reliability and leakage control are design-critical.
Availability
SBR140S1FQ-7 is available at Aetrix Electronics and suitable for automotive power conversion, USB-C PD protection, industrial PLC power inputs, and LED driver secondary-side rectification requiring stable component supply across multi-year production cycles.
Supply support for SBR140S1FQ-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® product line targets high-efficiency, high-reliability rectification in automotive and industrial power systems-designed specifically to replace Schottky diodes where leakage and temperature stability limit performance.
FAQ
Is SBR140S1FQ-7 suitable for automotive under-hood applications?
Yes. It is AEC-Q101 qualified, rated for TJ = –55°C to +150°C, and exhibits IR ≤ 3 mA at 40 V and +125°C-validated for engine control units, ADAS cameras, and body control modules exposed to under-hood thermal stress without thermal runaway risk.
What is the maximum recommended PCB copper pad size for thermal performance?
Per Diodes' datasheet Note 6, optimal thermal performance is achieved using a 2.1 × 2.1 mm² copper pad on a 25.4 × 25.4 mm² FR-4 board with 2 oz copper, yielding RθJA = 95 °C/W-enabling full 1 A current at +85°C ambient without derating.
Does SBR140S1FQ-7 have a specified avalanche rating?
No. The datasheet does not specify an avalanche energy rating (EAS) or repetitive avalanche capability. It is designed for clamped or non-avalanche circuit topologies; external TVS or snubbers are required if subjected to unclamped inductive switching events.
Can SBR140S1FQ-7 replace a standard 1N5819 in existing designs?
Yes, with validation. Its 40 V VRRM exceeds 1N5819's 40 V rating, VF is comparable (0.51 V vs. 0.45 V), and SOD123F footprint matches SOD123. However, confirm layout thermal relief and verify leakage behavior at elevated temperatures, as SBR technology offers superior high-T stability.
SBR140S1FQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 510 mV @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- 110pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
SBR140S1FQ-7 FAQ
1.How can I place an order for SBR140S1FQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR140S1FQ-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 SBR140S1FQ-7 reliable?
The price and inventory of SBR140S1FQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR140S1FQ-7 is usually 5 days.
3.What payment methods are accepted for SBR140S1FQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR140S1FQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR140S1FQ-7?
SBR140S1FQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR140S1FQ-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 SBR140S1FQ-7?
For technical support, including SBR140S1FQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR140S1FQ-7 requirements.
6.How does Aetrix verify that SBR140S1FQ-7 is sourced from the original manufacturer or authorized distributors?
All SBR140S1FQ-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 SBR140S1FQ-7 meets industry standards.
7.What is the process for return or replacement of SBR140S1FQ-7?
All SBR140S1FQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR140S1FQ-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 SBR140S1FQ-7 part is unused and in its original packaging.
Return procedure for SBR140S1FQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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