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Diodes Incorporated B240AQ-13-F
- Part No.:
- B240AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B240AQ-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,121
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Product details
Overview
B240AQ-13-F from Diodes Incorporated is an automotive-grade 40 V, 2.0 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.50 V forward voltage at 2.0 A, 50 A non-repetitive surge rating, and AEC-Q101 qualification for high-reliability power conversion in DC/DC converters, reverse polarity protection, and freewheeling circuits.
For engineers reviewing the B240AQ-13-F datasheet, B240AQ-13-F pinout, B240AQ-13-F application, or B240AQ-13-F equivalent, key selection criteria include its low VF for efficiency-critical 12 V automotive systems, thermal resistance of 25 °C/W (junction-to-lead), RoHS-compliant matte tin plating, and validated performance up to +150 °C junction temperature.
Technical Context
This Schottky diode employs guard ring die construction to suppress transient-induced avalanche failure and supports high-frequency switching in low-voltage power supplies due to its low junction capacitance (200 pF at 40 V) and fast recovery characteristics. Its unidirectional conduction path enables efficient energy transfer in flyback and buck converter freewheeling legs.
The device operates across –65 °C to +150 °C with no thermal derating required below +125 °C ambient when mounted per recommended FR-4 pad layout. It delivers stable leakage current ≤0.5 mA at rated 40 V reverse voltage and 25 °C, rising to ≤20 mA at 100 °C - critical for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 12 V battery systems with load dump transients. |
| IF(AV) | 2.0 A - Continuous average forward current; supports sustained power delivery in compact DC/DC modules. |
| VF @ 2.0A | 0.50 V - Low forward voltage drop; reduces conduction loss to ≤1.0 W at full load, improving thermal margin. |
| IFSM | 50 A - Non-repetitive peak surge rating; withstands inrush and fault currents in automotive start-stop circuits. |
| RθJL | 25 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for passive cooling. |
| IR @ 40V | ≤0.5 mA @ 25°C - Low reverse leakage; minimizes standby power loss in always-on vehicle modules. |
| TJ Range | –65 to +150 °C - Full automotive temperature range; qualified per AEC-Q101 for engine bay and infotainment use. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode band polarity marking, and 0.064 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); accepts up to 2.0 A continuous current. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential rail (e.g., output capacitor positive); blocks 40 V reverse voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche during voltage transients, enabling robust operation in noisy automotive electrical systems. |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, body electronics, and ADAS power stages. |
| Lead-free & halogen-free | Meets RoHS 2 and "Green" requirements (<900 ppm Br/Cl, <1000 ppm Sb); compatible with lead-free reflow profiles up to 260 °C/10 s. |
| High-temperature soldering tolerance | Withstands 260 °C for 10 seconds without degradation - ensures compatibility with standard SMT assembly processes. |
Applications
| Automotive Body Control Module (BCM) | 12 V DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply input to BCM microcontroller and CAN transceiver circuitry. IC Role / Device Role / Timing Role: Unidirectional blocking element preventing damage from incorrect battery connection. Use Value: 40 V VRRM exceeds ISO 7637-2 pulse 5a (load dump up to 35 V), while 0.50 V VF limits insertion loss to <1% at 2 A. | Use Scenario: Freewheeling diode in synchronous buck converter supplying 5 V/3 A to infotainment SoC. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side MOSFET off-time. Use Value: 25 °C/W RθJL allows direct thermal coupling to PCB ground plane, maintaining TJ <125 °C at full load without heatsink. |
| Start-Stop System Energy Recovery | LED Headlamp Constant-Current Driver Input Protection |
Use Scenario: Regenerative braking energy recapture circuit in 12 V start-stop system. IC Role / Device Role / Timing Role: Isolates recovered energy path from main battery during charging pulses. Use Value: 50 A IFSM handles short-duration regen surges; 200 pF CT minimizes high-frequency noise coupling into sensitive analog sensors. | Use Scenario: Polarity protection at input of constant-current LED driver IC powering adaptive front lighting. IC Role / Device Role / Timing Role: Prevents catastrophic failure if external wiring is reversed during service. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling (–40 °C to +125 °C) and vibration stress in headlamp housing. |
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 40 V VRRM, 2.0 A IF(AV), but SMB package (RθJL = 20 °C/W) and higher VF (0.55 V typ). | Suitable for space-constrained layouts where lower thermal resistance outweighs slight VF penalty. | Select when board-level thermal management favors SMB footprint and higher peak power dissipation is needed. |
| SS24 (ON Semiconductor) | Identical SMA package and 40 V rating, but rated only to 125 °C TJ max and not AEC-Q101 qualified. | Limited to non-automotive industrial or consumer applications requiring cost optimization over qualification. | Choose only for non-automotive designs where AEC-Q101 compliance is not mandated. |
Compared with SB240-E3/52T and SS24, B240AQ-13-F uniquely combines AEC-Q101 qualification, SMA form factor, and lowest VF (0.50 V) among automotive-qualified 2 A / 40 V Schottky rectifiers - making it optimal for thermally constrained, safety-critical vehicle subsystems.
Availability
B240AQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, 12 V DC/DC power conversion, and LED lighting systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for B240AQ-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, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
The B240AQ-13-F belongs to Diodes' automotive-qualified Schottky rectifier product line, engineered specifically for robustness in harsh 12 V vehicle electrical systems - emphasizing low VF, surge resilience, and AEC-Q101-compliant process control.
FAQ
What is the maximum junction temperature for continuous operation?
The B240AQ-13-F is rated for continuous operation from –65 °C to +150 °C junction temperature. Derating begins above +125 °C ambient per Figure 4 in DS13004 Rev. 22–2; at 2.0 A, full-rated current is maintained up to +125 °C ambient when mounted on FR-4 with minimum recommended pad layout.
Is this part suitable for synchronous rectification?
No - B240AQ-13-F is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET-based solution. It functions as a freewheeling or polarity protection diode only; synchronous rectification requires active gate-driven MOSFETs with timing control circuitry.
Does the "Q" suffix indicate AEC-Q200 qualification?
No - the "Q" suffix in B240AQ-13-F denotes AEC-Q101 qualification for discrete semiconductors, not AEC-Q200 (which applies to passive components). This part meets AEC-Q101 stress test requirements for temperature cycling, HTRB, and ESD, confirming suitability for automotive semiconductor applications.
Can this diode replace B240A-13-F in existing designs?
Yes - B240AQ-13-F shares identical electrical specifications and SMA package dimensions with B240A-13-F, differing only in AEC-Q101 qualification and enhanced process controls. No layout or thermal redesign is needed; it is a drop-in upgrade for automotive applications requiring PPAP-capable components.
B240AQ-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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
B240AQ-13-F FAQ
1.How can I place an order for B240AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B240AQ-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 B240AQ-13-F reliable?
The price and inventory of B240AQ-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 B240AQ-13-F is usually 5 days.
3.What payment methods are accepted for B240AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B240AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B240AQ-13-F?
B240AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B240AQ-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 B240AQ-13-F?
For technical support, including B240AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B240AQ-13-F requirements.
6.How does Aetrix verify that B240AQ-13-F is sourced from the original manufacturer or authorized distributors?
All B240AQ-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 B240AQ-13-F meets industry standards.
7.What is the process for return or replacement of B240AQ-13-F?
All B240AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B240AQ-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 B240AQ-13-F part is unused and in its original packaging.
Return procedure for B240AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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