NRVB140ESFT3G

onsemi NRVB140ESFT3G — 40 V, 1 A Schottky Rectifier in SOD‑123FL (AEC‑Q101)

The onsemi NRVB140ESFT3G is an automotive‑qualified, single Schottky barrier rectifier rated for 40 V reverse voltage (VRRM) and 1 A average rectified current (IO). Housed in a compact, low‑profile SOD‑123FL package and supplied in Tape & Reel, this device is a practical, production‑ready choice for reverse polarity protection, freewheeling, and general rectification in automotive and industrial electronics. As part of the NRVB ESF family, the NRVB140ESFT3G brings the well‑known advantages of Schottky technology—fast recovery and low forward drop—together with the process controls and qualification required for automotive applications.

At‑a‑Glance Features

• Brand/Manufacturer: onsemi
• MPN: NRVB140ESFT3G (NRVB ESF series)
• Category: Diodes – Rectifiers – Single, Schottky
• Diode Type: Schottky barrier rectifier
• Configuration: Single diode
• Reverse Voltage (VRRM): 40 V
• Average Rectified Current (IO): 1 A
• Package: SOD‑123FL (flat‑lead, low‑profile)
• Pin Count: 2
• Mounting: Surface mount (SMT)
• Packaging: Tape & Reel (TR)
• Automotive Qualification: AEC‑Q101
• Environmental: Pb‑Free, RoHS Compliant

Overview and Positioning

The onsemi NRVB140ESFT3G targets space‑constrained, high‑reliability applications where fast switching, low forward voltage, and robust environmental performance are important. Its AEC‑Q101 qualification makes it suitable for in‑vehicle electronics such as body controllers, ADAS support rails, infotainment subsystems, and ECU peripheral protection. The SOD‑123FL package delivers a low profile with a thermally efficient footprint relative to its size, helping designers meet power density targets in densely packed PCBs.

Engineers will find the 40 V, 1 A rating useful in auxiliary rails and low‑to‑moderate current power paths commonly encountered in 12 V and 24 V systems, including reverse battery protection, motor/solenoid flyback suppression, and general rectification in compact DC power stages. For sourcing managers, the part’s active lifecycle status and RoHS compliance streamline approvals and help reduce supply risk in long‑running programs.

Key Specifications

• Reverse Voltage (VRRM): 40 V
• Average Rectified Current (IO): 1 A
• Diode Type: Schottky barrier rectifier
• Configuration: Single
• Package / Case: SOD‑123FL
• Mounting Type: Surface mount
• Pin Count: 2
• Automotive Qualification: AEC‑Q101
• Lead/Environmental Status: Pb‑Free, RoHS Compliant

Notes:

• Forward voltage, reverse leakage, surge current, and thermal characteristics: Not specified in datasheet here; refer to the official datasheet for detailed electrical characteristics and derating guidance.

Why Choose a Schottky Rectifier Like NRVB140ESFT3G?

• Fast recovery with minimal reverse charge improves switching efficiency and reduces EMI compared to standard PN junction diodes in many low‑voltage applications.
• Low forward voltage drop decreases conduction losses, improving thermal performance and battery life in automotive and industrial systems.
• AEC‑Q101 qualification supports use in demanding environments where temperature cycling, humidity, and mechanical stress must be considered.

Typical Applications and Design Roles

The NRVB140ESFT3G is a versatile building block for low‑to‑moderate current paths:

Reverse Polarity Protection

Place the diode in series with the supply input or in a shunt configuration depending on the architecture. A series Schottky diode provides simple and robust protection from accidental reverse battery connection with minimal insertion loss compared to a standard diode. For higher efficiency in very low‑drop designs, compare against ideal diode controllers or back‑to‑back MOSFET solutions; however, the Schottky approach typically remains the lowest‑complexity and most cost‑effective method.

Freewheeling and Flyback Suppression

Across inductive loads (motors, relays, solenoids), the NRVB140ESFT3G clamps negative voltage excursions to protect driver ICs and transistors. Its fast recovery helps to limit voltage spikes and ringing when currents commutate, improving system reliability.

General Rectification

Suitable for compact AC‑to‑DC rectification or DC‑to‑DC converter secondary stages where the 40 V reverse capability and 1 A average rectified current are appropriate. In low‑voltage, high‑efficiency rails, Schottky diodes can offer lower losses than general‑purpose silicon diodes.

Layout and Thermal Considerations

• Keep the current loop area small. Route the diode with short, wide traces from source to load to minimize parasitic inductance and reduce ringing.
• Use generous copper area under and around the SOD‑123FL pads to improve heat spreading. Thermal performance depends strongly on PCB copper; consult the datasheet’s layout recommendations and any thermal characterization data.
• Consider airflow and neighboring heat sources. Even at modest currents, continuous conduction in a small package can raise junction temperatures if copper is limited.
• Pay attention to surge and transient conditions (e.g., inrush, motor stall, load dumps). Ensure the selected diode’s surge capability and derating meet the worst‑case profile; see the datasheet for permissible limits and transient thermal impedance guidance.

Packaging, Handling, and Assembly

• Package: SOD‑123FL (flat‑lead, low profile) supports high‑density placement and automated pick‑and‑place.
• Packaging format: Tape & Reel (NRVB140ESFT3G suffix). This supports high‑volume SMT assembly lines and feeder‑based kitting.
• Pb‑Free, RoHS Compliant: Helps simplify global environmental compliance.
• Standard SMT reflow: Use the manufacturer’s recommended reflow profile; follow industry best practices for moisture handling and storage. Specific MSL data: Not specified in datasheet here; consult product documentation for handling precautions.

Lifecycle, Supply, and Replacements

• Lifecycle Status: Active (per provided data). This indicates ongoing manufacturer support, which is helpful for new designs and long‑life programs.
• Manufacturer: onsemi
• Designated Replacements: None listed by manufacturer in the provided data. If you require alternates with similar ratings (40 V, 1 A, Schottky, SOD‑123FL, AEC‑Q101), evaluate onsemi’s parametric search or vetted cross‑references from authorized distributors.

Sourcing tips:

• Confirm automotive grade (AEC‑Q101) requirements early in the AVL process.
• Validate that the exact ordering code (NRVB140ESFT3G) meets packaging and Pb‑free requirements for your factory line.
• For second‑source planning, capture the critical parameters (VRRM, IO, package, AEC‑Q101, RoHS) and verify against alternates. Always perform bench validation for surge, thermal, and EMI behavior.

Compliance and Quality

• Automotive Qualification: AEC‑Q101 (automotive qualified)
• Environmental: RoHS Compliant; Pb‑Free

These attributes are important checkpoints for automotive PPAP packages, corporate environmental reporting, and global regulatory compliance.

Ordering and Identification

• MPN: NRVB140ESFT3G
• Series: NRVB ESF
• Category: Diodes – Rectifiers – Single, Schottky
• Electrical Ratings: 40 V VRRM, 1 A IO
• Package: SOD‑123FL, 2 pins
• Mounting: Surface mount
• Packaging: Tape & Reel (TR)
• Qualification: AEC‑Q101; RoHS compliant (Pb‑Free)

Ordering notes:

• The “T3G” suffix commonly denotes Tape & Reel and Pb‑Free compliance in onsemi nomenclature. Confirm exact packaging units and reel specifications with your distributor before placing volume orders.

How to Select the Right Schottky Rectifier for Your Design

When using the onsemi NRVB140ESFT3G or evaluating drop‑in alternates, consider:

• Reverse Voltage (VRRM): Choose VRRM comfortably above your maximum reverse or reflected voltage. For 12 V/24 V systems, account for transients and ringing.
• Average Current (IO): Size for continuous current with thermal margin. Consider duty cycle and ambient temperature.
• Surge and Repetitive Peak Currents: Ensure capability for inrush and inductive events. Not specified in datasheet here—consult the datasheet’s surge ratings.
• Forward Voltage: Lower Vf reduces conduction loss; compare across candidates at your operating current and temperature.
• Leakage Current: Schottky leakage rises with temperature; validate worst‑case system behavior in hot conditions.
• Package and Thermal: Confirm the SOD‑123FL footprint and copper area can dissipate expected losses. Prototype with realistic copper pours to verify junction temperatures.
• Qualification and Compliance: Maintain AEC‑Q101 and RoHS requirements as needed for your end market.

Applications Snapshot

• Automotive: Reverse battery protection, ECU rail protection, relay/solenoid flyback, low‑power DC rails
• Industrial: Motor drivers, PLC I/O protection, compact buck/boost converter rectifiers
• Consumer/Embedded: General rectification in space‑constrained power stages

Specifications Summary

• Diode Type: Schottky barrier rectifier
• Configuration: Single
• Reverse Voltage (VRRM): 40 V
• Average Rectified Current (IO): 1 A
• Package / Case: SOD‑123FL
• Pin Count: 2
• Mounting: Surface mount
• Automotive Qualification: AEC‑Q101
• Environmental: Pb‑Free, RoHS Compliant
• Additional electrical/thermal parameters: Not specified in datasheet here; refer to the datasheet for limits, curves, and test conditions.

Resources

• Product Page: https://www.onsemi.com/products/discrete-power-modules/schottky-diodes/NRVB140ESF
• Datasheet: https://www.onsemi.com/pdf/datasheet/nrvb120esf-d.pdf

Always verify final design limits (including derating and transient behavior) against the latest onsemi datasheet and application guidance.

Frequently Asked Questions (FAQs)

Q1: What is the main function of the onsemi NRVB140ESFT3G?
A: It is a single Schottky barrier rectifier for fast, low‑loss rectification and protection roles such as reverse polarity protection and freewheeling across inductive loads.

Q2: What are its key ratings?
A: 40 V reverse voltage (VRRM) and 1 A average rectified current (IO), per the provided part data.

Q3: Is the NRVB140ESFT3G automotive qualified?
A: Yes. It is qualified to AEC‑Q101.

Q4: What package does it use?
A: SOD‑123FL, a low‑profile, flat‑lead SMT package.

Q5: Is it RoHS compliant and Pb‑Free?
A: Yes, it is RoHS Compliant and Pb‑Free.

Q6: What does the “T3G” suffix indicate?
A: It denotes Tape & Reel packaging and Pb‑Free compliance in onsemi’s ordering scheme. Confirm exact reel specifications with your distributor.

Q7: Can I use it for reverse battery protection in a 12 V automotive system?
A: Yes—this is a common use case. Ensure the voltage and current margins (including transients and thermal considerations) are acceptable for your design.

Q8: Where can I find forward voltage, leakage, and surge current values?
A: These specifics are not listed here; refer to the official onsemi datasheet for detailed electrical characteristics and test conditions.

Q9: Are there manufacturer‑designated replacements?
A: None are listed in the provided data. Check onsemi’s parametric search or consult authorized distributors for potential alternatives.

Q10: Is the part suitable for automated SMT assembly?
A: Yes. The SOD‑123FL package and Tape & Reel format support automated pick‑and‑place and reflow processes. Follow the manufacturer’s recommended reflow profile and handling guidelines.

By selecting the onsemi NRVB140ESFT3G for your design, you gain an automotive‑qualified, RoHS‑compliant 40 V, 1 A Schottky rectifier in a compact SOD‑123FL package—ideal for reliable, efficient rectification and protection in space‑constrained automotive and industrial systems. For final parameter checks and derating, consult the onsemi datasheet and validate under your worst‑case operating conditions.