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Diodes Incorporated B240A-13-F
- Part No.:
- B240A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B240A-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:27,864
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Product details
Overview
B240A-13-F from Diodes Incorporated is a 2.0A surface-mount Schottky barrier rectifier in SMA package, rated for 40V peak repetitive reverse voltage, 0.50V max forward voltage at 2.0A, and 50A non-repetitive surge current. It delivers low power loss in high-frequency DC/DC converters, polarity protection circuits, and free-wheeling diode applications in automotive and industrial power supplies.
For engineers reviewing the B240A-13-F datasheet, B240A-13-F pinout, B240A-13-F application, or B240A-13-F equivalent, key selection criteria include its 40V VRRM rating, 0.50V VF at 2.0A, AEC-Q101 qualification, RoHS-compliant matte tin plating, and thermal resistance of 25°C/W (junction-to-lead) in SMA package.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness and supports automated SMT assembly. Its low forward voltage drop and fast switching enable high-efficiency operation in low-voltage, high-frequency inverters and flyback snubbers.
Thermally, it operates from –65°C to +150°C with derated current above +75°C ambient; leakage current remains ≤0.5mA at 40V and +25°C, rising to ≤20mA at +100°C - critical for thermal design in enclosed environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage before breakdown; sets upper limit for input voltage in clamp or rectifier stages |
| IF(AV) | 2.0 A - Continuous average forward current under specified thermal conditions; defines steady-state power handling capability |
| VF @ 2.0A | 0.50 V max - Forward voltage drop at rated current; directly determines conduction loss (1.0W max at 2A) |
| IFSM | 50 A - Non-repetitive 8.3ms surge rating; enables survival during inrush or fault transients in power rails |
| RθJL | 25 °C/W - Junction-to-lead thermal resistance in SMA package; informs heatsinking requirements when lead is used as thermal path |
| IR @ 40V, 25°C | 0.5 mA max - Reverse leakage at rated voltage and room temperature; impacts standby power in battery-backed systems |
| CT @ 40V | 200 pF - Total junction capacitance at 40V reverse bias; affects high-frequency switching noise and EMI filtering design |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with UL 94V-0 flammability rating, cathode indicated by band or notch. Weight: ~0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); must handle full load current and surge |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); polarity marking ensures correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity without external TVS, reducing board space in automotive load-dump-prone circuits |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for under-hood ECUs |
| Lead-free matte tin plating | Enables compatibility with Pb-free reflow profiles (260°C/10s) and eliminates post-solder cleaning in high-volume manufacturing |
| Low VF (0.50V @ 2A) | Reduces conduction loss by ~30% vs. comparable silicon rectifiers, improving efficiency in 3.3V–12V DC/DC outputs |
| Moisture sensitivity Level 1 | Eliminates bake requirement prior to reflow, streamlining SMT line throughput and lowering production cost |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Output Stage |
|---|---|
Use Scenario: Polarity reversal protection on 12V supply input to BCM microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from incorrect battery connection. Use Value: Withstands 50A surge during jump-start events and maintains <0.5mA leakage at 12V, minimizing sleep-current drain. | Use Scenario: Free-wheeling diode in synchronous buck converter delivering 5V@2A to PLC I/O modules. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side FET off-time to sustain inductor current. Use Value: 0.50V VF limits conduction loss to ≤1.0W, enabling compact thermal design without heatsink in sealed enclosures. |
| USB-C Power Delivery Adapter | LED Driver Input Rectification |
Use Scenario: Secondary-side rectification in 20W USB-C PD adapter using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: High-frequency rectifier converting transformer secondary AC to regulated DC output. Use Value: 200pF capacitance minimizes switching node ringing; 40V rating safely covers reflected voltage spikes up to 36V. | Use Scenario: Input bridge rectifier in constant-current LED driver for street lighting (24VAC input). IC Role / Device Role / Timing Role: Converts AC line to unregulated DC bus feeding buck controller and LED string. Use Value: 2.0A average current rating supports >15W LED loads; 150°C max junction temperature accommodates outdoor ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB240-E3/52T (Vishay) | Same SMA package, 40V VRRM, but VF = 0.52V max @ 2A; no AEC-Q101 qualification | Not approved for automotive use; suitable only for commercial-grade power supplies | Select if AEC-Q101 is not required and cost is primary constraint |
| SS24 (ON Semiconductor) | SMB package (larger footprint), same 40V/2A rating, VF = 0.55V max @ 2A, RθJL = 20°C/W | Higher thermal conductivity but requires more PCB area; better for thermally constrained SMB layouts | Select when board layout allows SMB and lower thermal resistance is prioritized over size |
Compared with SB240-E3/52T and SS24, B240A-13-F uniquely combines AEC-Q101 qualification, SMA footprint efficiency, and lowest VF (0.50V) among 40V/2A Schottky rectifiers - making it optimal for space-constrained, automotive-qualified designs where conduction loss and reliability are jointly critical.
Availability
B240A-13-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converters, USB-C power adapters, and LED driver designs requiring stable component supply across extended product lifecycles.
Supply support for B240A-13-F 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The B240A-13-F belongs to Diodes' standard Schottky rectifier product line, engineered for high-efficiency, low-VF power conversion in space- and thermal-constrained applications where fast recovery and low conduction loss are essential.
FAQ
What is the maximum junction temperature for B240A-13-F?
The absolute maximum junction temperature is +150°C, with continuous operation permitted from –65°C to +150°C. Derating begins at +75°C ambient per Figure 4; at +100°C ambient, average forward current must be reduced to approximately 1.2A to maintain safe junction temperature.
Is B240A-13-F compatible with lead-free reflow processes?
Yes - it features matte tin lead finish qualified for high-temperature soldering at +260°C for 10 seconds, fully compliant with IPC/JEDEC J-STD-020 moisture sensitivity Level 1, eliminating pre-bake requirements and supporting standard Pb-free reflow profiles.
Does B240A-13-F have automotive qualification?
Yes - it is AEC-Q101 qualified and PPAP-capable. While electrically and thermally identical to standard B2xxA parts, its qualification includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - meeting automotive electronics reliability requirements.
How does the guard ring construction improve reliability?
The guard ring die structure suppresses edge breakdown under high dv/dt or transient overvoltage, increasing ruggedness against ESD and load-dump events. This reduces field failure risk in automotive and industrial environments without requiring additional external protection components.
B240A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- 200pF @ 40V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
B240A-13-F FAQ
1.How can I place an order for B240A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B240A-13-F 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 B240A-13-F reliable?
The price and inventory of B240A-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B240A-13-F is usually 5 days.
3.What payment methods are accepted for B240A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B240A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B240A-13-F?
B240A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B240A-13-F 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 B240A-13-F?
For technical support, including B240A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B240A-13-F requirements.
6.How does Aetrix verify that B240A-13-F is sourced from the original manufacturer or authorized distributors?
All B240A-13-F 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 B240A-13-F meets industry standards.
7.What is the process for return or replacement of B240A-13-F?
All B240A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B240A-13-F, 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 B240A-13-F part is unused and in its original packaging.
Return procedure for B240A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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