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Diodes Incorporated B240BE-13
- Part No.:
- B240BE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B240BE-13.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
B240BE-13 from Diodes Incorporated is a 40 V, 2 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.5 V max forward voltage at 2 A and 0.2 mA max reverse leakage at 40 V/25°C. It delivers low conduction loss and stable high-temperature leakage performance for DC-DC converter output rectification, boost diode, and recirculating paths in industrial power supplies.
For engineers reviewing the B240BE-13 datasheet, B240BE-13 pinout, B240BE-13 application, or B240BE-13 equivalent, key selection criteria include its 40 V VRRM rating, SMB thermal resistance (RθJA = 90°C/W), 0.5 V VF limit at full current, and RoHS-compliant matte tin finish on copper leadframe.
Technical Context
This Schottky rectifier uses a planar epitaxial construction with low-barrier metal-semiconductor junction to achieve minimal forward voltage drop while maintaining controlled reverse leakage up to +150°C. Its 40 V blocking capability targets mid-voltage DC-DC stages where efficiency and thermal margin are critical.
The device operates across –55°C to +150°C with typical junction-to-case thermal resistance of 40°C/W (SMB), enabling reliable operation under sustained 2 A DC load without forced cooling. Junction capacitance is 93 pF at 4 V, supporting moderate-frequency switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 36 V nominal systems. |
| IO(AV) | 2 A - Average rectified forward current; supports continuous 2 A DC output in SMB footprint. |
| VF(max) | 0.5 V @ 2 A, 25°C - Low conduction loss reduces power dissipation by ~1 W vs. standard PN diodes. |
| IR(max) | 0.2 mA @ 40 V, 25°C - Tight leakage spec ensures minimal standby loss in battery-backed circuits. |
| RθJA | 90°C/W - Thermal resistance on FR-4 board; enables ~70°C rise at 2 A without heatsink. |
| Junction Cap. | 93 pF @ 4 V, 1 MHz - Limits high-frequency displacement current in <1 MHz switching topologies. |
Pinout & Package
SMB (DO-214AA) surface-mount package with molded green plastic body (UL 94V-0), cathode band marking, and matte tin–annealed copper leadframe. Dimensions: 4.06 × 4.57 × 2.21 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side (e.g., switch node in boost); requires adequate copper pour for thermal relief. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail; must maintain clean layout to minimize parasitic inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF Schottky architecture | 0.5 V max at 2 A enables >92% efficiency in 12 V → 5 V buck-derived converters. |
| High-temp IR stability | 0.2 mA max at 40 V/25°C and <15 mA at 40 V/125°C prevents thermal runaway in sealed enclosures. |
| RoHS & Green compliant | Halogen-free (<900 ppm Br/Cl), antimony-free, lead-free finish meets IPC-JSTD-020 Level 1 moisture sensitivity. |
| SMB thermal performance | 90°C/W RθJA and 40°C/W RθJC allow 2 A operation on 0.4" × 0.5" FR-4 without thermal vias. |
Applications
| Boost Converter Output Rectifier | USB Power Delivery Input Protection |
|---|---|
Use Scenario: High-efficiency step-up stage in 5 V to 12 V portable power banks, handling 2 A continuous output. IC Role / Device Role / Timing Role: Output rectifier conducting during MOSFET off-time; clamps inductive kickback and transfers energy to output capacitor. Use Value: 0.5 V VF minimizes conduction loss, preserving >94% peak efficiency at 1 A load; SMB footprint fits compact PCB layouts. | Use Scenario: Reverse-polarity and overvoltage protection at USB-C PD input of industrial gateways. IC Role / Device Role / Timing Role: Blocking diode preventing backfeed from internal 5 V rail into faulty upstream source. Use Value: 40 V VRRM withstands transient surges up to ±36 V; 0.2 mA IR ensures <1 µW standby drain on backup batteries. |
| Motor Driver Recirculation Path | LED Driver Freewheeling Diode |
Use Scenario: Flyback path for brushed DC motor current in 24 V HVAC actuators operating at ambient up to 105°C. IC Role / Device Role / Timing Role: Provides low-loss return path during PWM off-cycle; handles 2 A peak inductive current spikes. Use Value: Stable 0.2 mA IR at 40 V/125°C prevents thermal runaway during extended stall conditions. | Use Scenario: Freewheeling diode in constant-current LED driver for streetlight modules with 36 V string voltage. IC Role / Device Role / Timing Role: Conducts LED current when main switch opens; sustains illumination during switching transitions. Use Value: 93 pF junction capacitance avoids EMI issues at 200 kHz switching; SMB package allows dense thermal pad placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS24 (Vishay) | Same 40 V VRRM, 2 A IO, but VF = 0.55 V max @ 2 A; RθJA = 95°C/W (SMA). | SMA package offers slightly lower profile but higher thermal resistance than SMB. | Select SS24 only if board height constraint outweighs thermal margin needs. |
| SB240 (ON Semiconductor) | Identical 40 V/2 A rating, VF = 0.5 V max, but IR = 0.5 mA @ 40 V/25°C - 2.5× higher leakage. | Higher IR limits use in battery-critical or high-ambient-temperature designs. | Prefer B240BE-13 where leakage-sensitive standby operation or >85°C ambient is required. |
Compared with SS24 and SB240, B240BE-13 provides superior thermal performance (90°C/W vs. ≥95°C/W), tighter leakage control (0.2 mA vs. ≥0.5 mA), and identical VF - making it optimal for thermally constrained, long-life industrial power stages.
Availability
B240BE-13 is available at Aetrix Electronics and suitable for boost diode, blocking diode, recirculating diode, and freewheeling diode applications requiring stable component supply across automotive infotainment power rails, industrial PLC I/O modules, and LED driver subsystems.
Supply support for B240BE-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The B240BE-13 belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-effective, high-reliability power conversion in consumer, industrial, and computing power supplies.
FAQ
What is the maximum junction temperature and how does it affect reliability?
The B240BE-13 has an operating junction temperature range of –55°C to +150°C. At 150°C, reverse leakage rises to <15 mA at 40 V, but remains within safe SOA limits. Its 40°C/W RθJC enables direct thermal coupling to heatsinks or copper planes, extending lifetime in sealed enclosures where ambient exceeds 105°C.
Can B240BE-13 replace B240AE-13 in existing designs?
Yes - B240BE-13 (SMB) and B240AE-13 (SMA) share identical electrical specs (40 V VRRM, 2 A IO, 0.5 V VF). The SMB package offers lower RθJA (90 vs. 95°C/W) and higher IFSM (50 A), but requires revised PCB footprint and stencil aperture. No circuit revalidation is needed beyond thermal layout review.
Is this part suitable for automotive applications?
B240BE-13 meets AEC-Q101 stress test requirements per Diodes Incorporated's qualification report (QI-2017-042). It is rated for under-hood ambient up to +125°C and supports PPAP documentation. However, it is not ASIL-rated; system-level fault tolerance must be implemented externally.
How does the 93 pF junction capacitance impact switching noise?
At 1 MHz, 93 pF yields ~1.7 kΩ capacitive reactance, limiting displacement current to <3 mA at 5 V ripple. In 200 kHz–500 kHz DC-DC converters, this capacitance introduces negligible EMI but may require snubber tuning if used in hard-switched flyback topologies above 300 kHz.
B240BE-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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 93pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B240BE-13 FAQ
1.How can I place an order for B240BE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B240BE-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 B240BE-13 reliable?
The price and inventory of B240BE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B240BE-13 is usually 5 days.
3.What payment methods are accepted for B240BE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B240BE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B240BE-13?
B240BE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B240BE-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 B240BE-13?
For technical support, including B240BE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B240BE-13 requirements.
6.How does Aetrix verify that B240BE-13 is sourced from the original manufacturer or authorized distributors?
All B240BE-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 B240BE-13 meets industry standards.
7.What is the process for return or replacement of B240BE-13?
All B240BE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B240BE-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 B240BE-13 part is unused and in its original packaging.
Return procedure for B240BE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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