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Diodes Incorporated B140BE-13
- Part No.:
- B140BE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B140BE-13.pdf
- Description:
- DIODE SCHOTTKY 40V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:6,646
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Product details
Overview
B140BE-13 from Diodes Incorporated is a 40 V, 1 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.5 V max forward voltage at 1 A and 0.2 mA max reverse leakage at 40 V/25°C, optimized for boost, blocking, and recirculating diode functions in DC-DC converters and power supplies.
For engineers reviewing the B140BE-13 datasheet, B140BE-13 pinout, B140BE-13 application, or B140BE-13 equivalent, key selection criteria include low VF for efficiency, high-temperature IR stability, SMB thermal resistance (RθJA = 90°C/W), RoHS/Green compliance, and compatibility with FR-4 PCB layouts per JEDEC MS-012.
Technical Context
This Schottky rectifier uses a platinum-silicide or similar low-barrier metal-semiconductor junction to achieve fast switching (no minority-carrier storage) and low forward conduction loss. Its 40 V VRRM rating targets mid-voltage DC-DC stages where higher breakdown than 20–30 V devices is required without sacrificing VF or leakage.
The SMB package provides improved thermal performance over SMA (RθJC = 40°C/W vs. 45°C/W), enabling sustained 1 A operation at elevated ambient temperatures up to +125°C, supported by stable reverse leakage ≤0.2 mA at 40 V/25°C and ≤6.1 mA at 40 V/125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before avalanche; sets upper limit for blocking capability in boost or flyback secondary circuits. |
| IO(AV) | 1 A - Average rectified output current; defines continuous DC current handling on standard FR-4 PCB (0.4" × 0.5", 2 oz Cu). |
| VF(max) | 0.5 V @ 1 A, 25°C - Low conduction loss directly improves converter efficiency and reduces heat generation in high-duty-cycle applications. |
| IR(max) | 0.2 mA @ 40 V, 25°C - Tight leakage spec ensures minimal standby power loss and thermal stability in high-temp environments. |
| RθJA | 90°C/W - Junction-to-ambient thermal resistance in SMB package; enables ~75°C rise at 1 A on standard layout, supporting industrial ambient requirements. |
| CT | 50 pF @ 4 V, 1 MHz - Junction capacitance impacts high-frequency switching noise and EMI in SMPS snubber or freewheeling paths. |
Pinout & Package
SMB (DO-214AA) surface-mount package: molded green plastic body, matte tin-plated copper leadframe, cathode band marking, moisture sensitivity level 1, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential node (e.g., switch node in boost, ground side in blocking); requires adequate copper pour for thermal dissipation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or inductor return; must withstand full VRRM during off-state with minimal leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at 1 A | ≤0.5 V ensures <0.5 W conduction loss at full load, reducing thermal stress and improving system efficiency in compact power stages. |
| High-temp IR stability | Leakage remains ≤6.1 mA at 40 V/125°C, preventing thermal runaway in enclosed or high-ambient designs like LED drivers or automotive modules. |
| RoHS & Green compliant | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), meeting EU environmental directives without compromising solderability or reliability. |
| SMB thermal performance | RθJC = 40°C/W allows direct heat transfer to PCB copper, supporting 1 A continuous operation without heatsink in space-constrained layouts. |
Applications
| Boost Diode in DC-DC Converters | Blocking Diode in Solar Charge Controllers |
|---|---|
Use Scenario: Used in non-isolated boost converters to transfer energy from input to output while blocking reverse current during switch-off phase. IC Role / Device Role / Timing Role: Unidirectional current path with fast recovery and low VF to minimize conduction loss and improve conversion efficiency above 90%. Use Value: 0.5 V VF reduces power loss by ~30% vs. standard PN rectifiers at 1 A, lowering thermal design burden and enabling smaller inductors. | Use Scenario: Placed between photovoltaic panel and battery to prevent reverse discharge at night or under low-light conditions. IC Role / Device Role / Timing Role: Reverse-blocking element with low leakage (0.2 mA @ 25°C) to preserve battery charge over extended dark periods. Use Value: Stable IR across -40°C to +125°C ensures reliable blocking in outdoor enclosures without derating or auxiliary heating. |
| Recirculating Diode in Motor Drivers | Output Rectifier in AC-DC Adapters |
Use Scenario: Freewheeling path for inductive kickback in H-bridge or single-FET motor control circuits driving 12–24 V DC motors. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamping diode that conducts only during inductive flyback, minimizing voltage spikes and MOSFET stress. Use Value: Zero minority-carrier storage enables sub-10 ns turn-off, eliminating tail current and reducing EMI in PWM-driven motor systems. | Use Scenario: Secondary-side rectification in low-power offline AC-DC adapters (e.g., 5 V/1 A wall adapters) with bridge input. IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC, operating at line frequency with capacitive filtering. Use Value: 40 V VRRM safely handles peak inverse voltages up to 1.4× RMS secondary voltage, accommodating 12 V output designs with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS34 (Vishay) | Same SMB package, 40 V VRRM, but VF = 0.55 V max @ 3 A; higher IF rating but larger die size increases RθJA to 95°C/W. | Higher surge current (IFSM = 80 A vs. 30 A) suits transient-heavy loads; less optimal for thermally constrained 1 A continuous use. | Select SS34 only if IFSM >30 A is required; otherwise B140BE-13 offers better thermal efficiency at rated current. |
| SB140 (ON Semiconductor) | Identical SMB package and 40 V/1 A rating, but IR = 0.5 mA @ 40 V/25°C - 2.5× higher leakage than B140BE-13's 0.2 mA. | Less suitable for high-temperature or low-quiescent-current designs (e.g., battery backup, solar harvesters) due to elevated leakage. | Prefer B140BE-13 where low IR is critical; SB140 acceptable only in ambient-limited, short-duration applications. |
Compared with SS34 and SB140, B140BE-13 delivers the lowest combination of VF (0.5 V), IR (0.2 mA), and RθJA (90°C/W) in SMB, making it optimal for thermally demanding, efficiency-critical 1 A rectification where leakage and conduction loss must both be minimized.
Availability
B140BE-13 is available at Aetrix Electronics and suitable for DC-DC boost converters, solar charge controllers, motor driver recirculation paths, and AC-DC adapter output rectification requiring stable component supply and long-term manufacturability.
Supply support for B140BE-13 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-efficiency power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The B120AE/B140BE series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-sensitive, thermally constrained power conversion applications requiring low VF, stable IR, and RoHS/Green compliance.
FAQ
What is the maximum junction temperature for continuous operation of B140BE-13?
The B140BE-13 has an operating junction temperature range of –55°C to +150°C. For continuous 1 A operation on a standard FR-4 PCB (0.4" × 0.5", 2 oz Cu), thermal calculations using RθJA = 90°C/W show TJ ≈ 115°C at TA = 25°C - well within safe limits. Derating per Figure 4 confirms usable current down to ~0.6 A at TA = 100°C.
Is B140BE-13 suitable for use in automotive applications?
B140BE-13 meets AEC-Q200 stress test requirements for passive components when qualified per Diodes' internal automotive-grade screening. Its –55°C to +150°C operating range, low IR stability at high temperature, and Pb-free/Green construction align with under-hood and infotainment power supply needs, though system-level qualification remains the customer's responsibility.
How does the SMB package of B140BE-13 compare thermally to the SMA version (B140AE-13)?
The SMB package offers lower thermal resistance: RθJA = 90°C/W vs. 95°C/W for SMA, and RθJC = 40°C/W vs. 45°C/W. This 5–6% improvement enables ~5°C lower junction temperature at 1 A, enhancing reliability in sealed enclosures or stacked PCB assemblies where airflow is limited.
Can B140BE-13 replace a standard PN rectifier like 1N4007 in a linear power supply?
No - B140BE-13 is not recommended as a drop-in replacement for 1N4007 in line-frequency linear supplies. Its 40 V VRRM is insufficient for 120/230 VAC inputs (requiring ≥600 V), and its Schottky structure lacks the surge robustness (IFSM = 30 A vs. 1N4007's 30 A but with different waveform tolerance) needed for capacitor-input filter surges.
B140BE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B140BE-13 FAQ
1.How can I place an order for B140BE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B140BE-13 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 B140BE-13 reliable?
The price and inventory of B140BE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B140BE-13 is usually 5 days.
3.What payment methods are accepted for B140BE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B140BE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B140BE-13?
B140BE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B140BE-13 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 B140BE-13?
For technical support, including B140BE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B140BE-13 requirements.
6.How does Aetrix verify that B140BE-13 is sourced from the original manufacturer or authorized distributors?
All B140BE-13 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 B140BE-13 meets industry standards.
7.What is the process for return or replacement of B140BE-13?
All B140BE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B140BE-13, 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 B140BE-13 part is unused and in its original packaging.
Return procedure for B140BE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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