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Diodes Incorporated SBR140S1F-7
- Part No.:
- SBR140S1F-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
SBR140S1F-7.pdf
- Description:
- DIODE SBR 40V 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,760
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Product details
Overview
SBR140S1F-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 100 µA max reverse leakage at 40 V and +25°C. It delivers low conduction loss and high-temperature stability for DC/DC boost stages and blocking functions in compact power supplies.
For engineers reviewing the SBR140S1F-7 datasheet, SBR140S1F-7 pinout, SBR140S1F-7 application, or SBR140S1F-7 equivalent, key selection criteria include forward voltage at rated current, thermal resistance junction-to-ambient (75 °C/W on 1-in² copper pad), peak surge current rating (30 A), and automotive-qualified variant availability (SBR140S1FQ).
Technical Context
This SBR uses patented Super Barrier Rectifier technology to achieve lower VF than standard Schottky diodes while maintaining superior high-temperature reverse leakage performance. Its 40 V VRRM and 1 A IO rating target low-voltage, medium-current rectification where efficiency and thermal robustness are critical.
The device operates across –55°C to +150°C and is qualified to AEC-Q standards for high-reliability applications. Its SOD123F package provides 8 °C/W junction-to-case thermal resistance when mounted on a 1-in² copper pad, enabling stable operation under sustained load in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for blocking capability in 12–24 V systems. |
| IO | 1 A - Average rectified output current; defines continuous DC current handling without derating in half-wave resistive loads. |
| VF Max | 0.51 V @ 1 A, +25°C - Directly determines conduction loss (0.51 W per diode at full load); enables >92% efficiency in 5 V boost converters. |
| IR Max | 100 µA @ 40 V, +25°C - Confirmed reverse leakage at rated voltage; remains <1 mA up to +150°C per Figure 3. |
| RθJA | 75 °C/W - Measured on 1-in² 2 oz. copper pad; allows ~1.3 W power dissipation before reaching 150°C junction temperature at 25°C ambient. |
| IFSM | 30 A - Non-repetitive 8.3 ms surge rating; supports inrush current handling in input-stage protection circuits. |
Pinout & Package
Package: SOD123F - surface-mount, molded plastic case with cathode band marking; dimensions: 1.80 mm × 2.70 mm × 1.15 mm (L × W × H); weight ≈ 0.015 g; RoHS-compliant matte tin finish on copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to source side (e.g., switch node in boost topology); must handle full 1 A DC and 30 A surge. |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to output rail or ground return path; polarity-sensitive placement required for correct rectification. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Rectifier (SBR®) technology | Combines Schottky-like VF with PN-junction thermal stability-enables 0.44 V typical VF at 1 A while limiting IR growth at high temperature. |
| High-temperature reverse leakage control | IR remains ≤1 mA up to +150°C (per Figure 3), reducing risk of thermal runaway in enclosed or high-ambient environments. |
| AEC-Q qualified variant available | SBR140S1FQ is automotive-grade; same electrical specs but validated per AEC-Q101 for under-hood and infotainment power rails. |
| Green, halogen-free construction | Meets JEDEC J-STD-020 moisture sensitivity Level 1 and EU RoHS 3 (2015/863/EU); Br+Cl <1500 ppm, Sb <1000 ppm. |
Applications
| Boost Diode in 5 V USB-C PD Adapters | Blocking Diode in Dual-Battery Backup Systems |
|---|---|
Use Scenario: Used in synchronous or quasi-resonant boost converters delivering 5 V/3 A from 3.7 V Li-ion input. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from input to output capacitor during switch-off phase. Use Value: 0.51 V VF minimizes power loss (≤1.53 W total at full load), improving adapter thermal profile and meeting DOE VI efficiency requirements. | Use Scenario: Prevents backfeed between primary and backup Li-ion cells in portable medical monitors. IC Role / Device Role / Timing Role: Isolates battery domains during charging/discharging transitions; conducts only when primary voltage exceeds backup by >0.5 V. Use Value: Low 100 µA IR at room temperature ensures <1 µA standby drain, extending backup runtime beyond 72 hours. |
| Output Rectifier in 12 V Automotive LED Drivers | Reverse Polarity Protection in Industrial 24 V Sensors |
Use Scenario: Rectifies switched output in buck-derived constant-current LED drivers operating in engine-bay environments (TA up to +105°C). IC Role / Device Role / Timing Role: Converts pulsed inductor current into steady LED current; handles 1 A average forward current with minimal ripple. Use Value: Stable VF and IR up to +150°C ensure consistent brightness and no thermal runaway under sustained high-ambient conditions. | Use Scenario: Placed in series with 24 V supply line to protect downstream ASICs from accidental reverse connection. IC Role / Device Role / Timing Role: Acts as fail-safe series element; blocks current flow if input polarity is inverted. Use Value: 40 V VRRM safely withstands transients up to ±36 V; 30 A IFSM absorbs brief reverse-connection surges without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT140S1F-7 | Same SBR® die, but in SOD123 package (RθJA = 110 °C/W vs. 75 °C/W); 0.51 V VF identical; 100 µA IR identical. | Larger thermal footprint required for same power dissipation; unsuitable for ultra-thin PCBs where height <1.15 mm is mandatory. | Select when board layout allows larger pad area and cost is prioritized over thermal density. |
| MBR140S1F-7 | Standard Schottky rectifier; 0.55 V VF max at 1 A; IR rises to >500 µA at +125°C (vs. <300 µA for SBR140S1F-7). | Higher conduction loss and reduced high-temp reliability; not AEC-Q qualified even in Q-grade variants. | Select only for non-automotive, low-temperature (<85°C ambient) applications where lowest BOM cost is critical. |
Compared with SBRT140S1F-7 and MBR140S1F-7, the SBR140S1F-7 offers superior thermal performance in minimal volume and better high-temperature leakage control-making it optimal for space-constrained, thermally demanding, or automotive-adjacent power rails.
Availability
SBR140S1F-7 is available at Aetrix Electronics and suitable for USB-C PD adapters, dual-battery backup systems, automotive LED drivers, and industrial sensor protection requiring stable component supply and long-term lifecycle support.
Supply support for SBR140S1F-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 was developed to bridge the gap between Schottky and PN rectifiers-delivering near-Schottky VF with enhanced thermal stability and reliability for high-efficiency, high-temperature power conversion.
FAQ
What is the maximum junction temperature for continuous operation?
The SBR140S1F-7 has an operating junction temperature range of –55°C to +150°C. For continuous 1 A DC operation on a 1-in² 2 oz. copper pad (RθJA = 75 °C/W), the maximum allowable ambient temperature is 117°C to stay within the 150°C limit-calculated as 150 − (1² × 0.51 × 75) ≈ 117°C.
Is the SBR140S1F-7 suitable for automotive applications?
The SBR140S1F-7 itself is not automotive-qualified, but its pin-compatible variant SBR140S1FQ is AEC-Q101 qualified and shares identical electrical specifications. For automotive use, SBR140S1FQ must be specified; qualification includes stress testing for temperature cycling, humidity, and mechanical shock per AEC standards.
How does the SBR® technology differ from standard Schottky diodes?
SBR® uses a modified metal-semiconductor structure with integrated barrier engineering to suppress thermionic emission at high temperatures. Unlike standard Schottky diodes-which suffer exponential IR increase above 85°C-SBR140S1F-7 maintains IR <300 µA at +125°C and <1 mA at +150°C, enabling stable operation in thermally aggressive environments.
What is the recommended PCB pad layout for thermal performance?
For optimal thermal performance, use the SOD123F suggested pad layout from Diodes' package outline: 1.34 mm × 1.80 mm pads (X × Y), 4.20 mm center-to-center spacing (X1), and 2.86 mm overall pad length (C). A 1-in² copper pour connected via ≥4 thermal vias (0.3 mm diameter) to inner-layer ground planes reduces RθJA to 75 °C/W as specified.
SBR140S1F-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- 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:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
SBR140S1F-7 FAQ
1.How can I place an order for SBR140S1F-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR140S1F-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 SBR140S1F-7 reliable?
The price and inventory of SBR140S1F-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR140S1F-7 is usually 5 days.
3.What payment methods are accepted for SBR140S1F-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR140S1F-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR140S1F-7?
SBR140S1F-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR140S1F-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 SBR140S1F-7?
For technical support, including SBR140S1F-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR140S1F-7 requirements.
6.How does Aetrix verify that SBR140S1F-7 is sourced from the original manufacturer or authorized distributors?
All SBR140S1F-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 SBR140S1F-7 meets industry standards.
7.What is the process for return or replacement of SBR140S1F-7?
All SBR140S1F-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR140S1F-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 SBR140S1F-7 part is unused and in its original packaging.
Return procedure for SBR140S1F-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR140S1F-7 Tags
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Diodes Incorporated
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