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Diodes Incorporated B240Q-13-F
- Part No.:
- B240Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B240Q-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:4,330
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Product details
Overview
B240Q-13-F from Diodes Incorporated is an automotive-grade 40 V, 2.0 A surface-mount Schottky barrier rectifier in SMB 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 engine control units.
For engineers reviewing the B240Q-13-F datasheet, B240Q-13-F pinout, B240Q-13-F application, or B240Q-13-F equivalent, key selection criteria include low VF for efficiency-critical 12 V/24 V DC-DC stages, thermal resistance of 20 °C/W (junction-to-lead), and SMB package compatibility with automated SMT assembly in under-hood automotive modules.
Technical Context
This Schottky diode operates as a unidirectional power rectifier with metal-semiconductor junction architecture, enabling fast switching (<10 ns reverse recovery) and zero minority-carrier storage. Its guard ring die construction provides transient overvoltage protection without external components.
Designed for low-voltage, high-frequency operation, it supports free-wheeling in synchronous buck converters and polarity protection in battery-fed systems. The device maintains stable leakage current (<0.5 mA at 40 V, 25 °C) and capacitance (200 pF at 40 V, 1 MHz) across its operating temperature range of –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for input rail protection in 24 V automotive systems. |
| IF(AV) | 2.0 A - Average forward current rating; defines continuous conduction capability in DC-DC output stage or reverse-battery protection path. |
| VF @ 2.0A | 0.50 V - Forward voltage drop at rated current; directly determines conduction loss (1.0 W typical) and thermal load in compact layouts. |
| IFSM | 50 A - Non-repetitive peak surge current (8.3 ms half-sine); enables survival during load dump transients per ISO 7637-2. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance (SMB); enables direct PCB copper pour thermal coupling for passive cooling without heatsinks. |
| IR @ 40V | 0.5 mA - Reverse leakage at rated VR and 25 °C; low value minimizes standby power loss in always-on vehicle modules. |
| TJ Range | –65 °C to +150 °C - Operating junction temperature range; certified for under-hood placement near engines and transmissions. |
Pinout & Package
Package: SMB (Surface Mount Body), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter or battery negative in polarity protection). |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive or battery positive); cathode band identifies this terminal visually and optically. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Provides intrinsic transient voltage suppression (TVS-like clamping) without added components, reducing BOM count in ECU power rails. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HAST, and mechanical shock-enabling deployment in ASIL-B relevant subsystems. |
| Low VF & high IFSM synergy | Enables high-efficiency 2.0 A operation while surviving 50 A surges, supporting both steady-state and fault-condition robustness in single-device solutions. |
| Lead-free, halogen-free "Green" construction | Complies with RoHS 2 and automotive ELV directives; eliminates brominated flame retardants and antimony compounds (<1000 ppm). |
Applications
| Engine Control Unit Power Supply | Automotive Infotainment DC-DC Stage |
|---|---|
Use Scenario: Rectification and freewheeling in 5 V/3.3 V buck converter supplying MCU and CAN transceivers. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side FET off-time; critical for converter efficiency and EMI control. Use Value: 0.50 V VF reduces conduction loss by ~30% vs. standard PN diodes, lowering thermal stress on adjacent SoC and enabling smaller PCB area. | Use Scenario: Polarity protection at 12 V input of head unit power management IC. IC Role / Device Role / Timing Role: Reverse-battery protection diode placed in series with main input; blocks reverse current during jump-start misconnection. Use Value: 50 A IFSM withstands jump-start surge events; AEC-Q101 qualification ensures reliability across 15-year vehicle lifecycle. |
| Body Control Module Load Dump Protection | ADAS Camera Module Power Input |
Use Scenario: Clamping and energy dissipation during ISO 7637-2 Pulse 5a load dump events (up to 60 V, 100 ms). IC Role / Device Role / Timing Role: Transient-absorbing rectifier leveraging guard ring structure to shunt surge current away from downstream regulators. Use Value: Guard ring design provides inherent clamping behavior without external TVS, reducing component count and board space in BCM power entry. | Use Scenario: Input rectification for 5 V camera module powered from vehicle's switched 12 V rail. IC Role / Device Role / Timing Role: Primary rectifier converting pulsed or noisy 12 V supply to clean DC input for LDO or DC-DC regulator. Use Value: 200 pF capacitance at 40 V minimizes high-frequency noise coupling into image sensor analog chain, preserving SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB240-E3/52 | Same 40 V/2.0 A rating, but SMB package lacks AEC-Q101 qualification; VF = 0.52 V @ 2.0 A. | Not approved for automotive safety-critical modules; suitable only for industrial or consumer-grade 12 V supplies. | Select only if AEC-Q101 compliance is not required and cost is prioritized over automotive qualification. |
| SS24H | Higher VF (0.55 V @ 2.0 A), same SMB footprint, AEC-Q101 qualified, but lower IFSM (40 A vs. 50 A). | Marginally less robust against severe load dump events; acceptable for infotainment but not for engine bay ECUs. | Choose when tighter thermal budget allows slightly higher VF, and surge margin can be relaxed by system-level clamping. |
Compared with SB240-E3/52 and SS24H, B240Q-13-F uniquely combines AEC-Q101 qualification, 50 A surge rating, and 0.50 V VF in SMB-making it optimal for space-constrained, thermally demanding automotive power nodes where qualification and transient resilience are non-negotiable.
Availability
B240Q-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, infotainment systems, and ADAS camera modules requiring stable component supply across extended automotive production lifecycles.
Supply support for B240Q-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 devices for automotive, industrial, and computing markets.
B240Q-13-F belongs to the B2xx/A automotive Schottky rectifier product line, engineered specifically for under-hood and chassis-mounted power conversion where low VF, high surge tolerance, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum junction temperature for continuous operation?
The B240Q-13-F is rated for continuous operation from –65 °C to +150 °C junction temperature. Its thermal resistance of 20 °C/W (junction-to-lead) allows reliable operation at full 2.0 A load with adequate PCB copper area, even in ambient temperatures up to +125 °C when mounted per recommended pad layout AP02001.
Is B240Q-13-F compatible with lead-free reflow soldering processes?
Yes-B240Q-13-F features matte tin-plated terminals and is qualified for high-temperature soldering at +260 °C for 10 seconds, fully compliant with IPC/JEDEC J-STD-020 moisture sensitivity Level 1 and lead-free reflow profiles used in automotive SMT lines.
How does the guard ring construction improve system-level reliability?
The guard ring die structure provides intrinsic edge termination that suppresses avalanche breakdown during voltage transients, reducing dependence on external TVS diodes. This lowers system-level failure risk during load dump or inductive switching events without increasing bill-of-materials or PCB area.
Can B240Q-13-F replace B240-13-F in existing designs?
Yes-B240Q-13-F shares identical electrical specifications and SMB package dimensions with B240-13-F, but adds AEC-Q101 qualification and automotive PPAP capability. No layout or thermal redesign is needed; the Q-suffix denotes enhanced automotive compliance without functional or mechanical change.
B240Q-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- 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 @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B240Q-13-F FAQ
1.How can I place an order for B240Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B240Q-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 B240Q-13-F reliable?
The price and inventory of B240Q-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 B240Q-13-F is usually 5 days.
3.What payment methods are accepted for B240Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B240Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B240Q-13-F?
B240Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B240Q-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 B240Q-13-F?
For technical support, including B240Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B240Q-13-F requirements.
6.How does Aetrix verify that B240Q-13-F is sourced from the original manufacturer or authorized distributors?
All B240Q-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 B240Q-13-F meets industry standards.
7.What is the process for return or replacement of B240Q-13-F?
All B240Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B240Q-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 B240Q-13-F part is unused and in its original packaging.
Return procedure for B240Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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