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Diodes Incorporated B240-13
- Part No.:
- B240-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B240-13.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:5,611
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Product details
Overview
B240-13 from Diodes Incorporated is a 40 V, 2.0 A surface-mount Schottky barrier rectifier in SMB package, featuring low forward voltage (0.50 V @ 2.0 A), 50 A non-repetitive surge rating, and AEC-Q101 qualification for automotive use in polarity protection and free-wheeling circuits.
For engineers reviewing the B240-13 datasheet, B240-13 pinout, B240-13 application, or B240-13 equivalent, key selection criteria include peak reverse voltage, thermal resistance (20 °C/W junction-to-lead), leakage current at 100 °C (20 mA), RoHS/Green compliance, and SMB package compatibility with automated SMT assembly.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient protection and supports high-frequency switching in DC-DC converters and inverters. Its low VF minimizes conduction loss, while the 50 A IFSM rating enables robust handling of inductive load turn-off surges.
Designed for operation from –65 °C to +150 °C, it maintains stable leakage performance up to 100 °C (20 mA @ VR) and exhibits 200 pF total capacitance at 40 V reverse bias - critical for EMI-sensitive high-speed rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in polarity protection and flyback clamp circuits. |
| IO | 2.0 A - Continuous average forward current at TA = +25°C; derates to ~1.2 A at +100°C per Fig. 4. |
| VF | 0.50 V @ 2.0 A - Low conduction loss enabling >90% efficiency in low-voltage power paths. |
| IFSM | 50 A - Single half-sine surge capability (8.3 ms); supports motor drive and relay coil demagnetization. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance (SMB); enables direct PCB copper pour heat sinking without external heatsink. |
| IR | 20 mA @ VR, +100°C - Leakage level impacts standby power in battery-backed systems and high-temp automotive modules. |
Pinout & Package
SMB (DO-214AA) surface-mount plastic package with cathode band marking; dimensions: 3.30–3.94 mm (L) × 4.06–4.57 mm (W) × 1.96–2.21 mm (H); weight ≈ 0.093 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in reverse polarity protection; requires adequate copper area for thermal dissipation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to input rail in polarity protection; must withstand full VRRM during reverse bias. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity without external TVS, reducing BOM count in automotive body control modules. |
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control units and lighting drivers requiring extended temperature reliability. |
| Lead-free & Halogen-free | Meets J-STD-020 Level 1 moisture sensitivity and RoHS 2/ELV requirements for global vehicle production. |
| High-temp solderability | Rated for 260°C/10 sec reflow - compatible with standard lead-free PCB assembly processes without delamination risk. |
Applications
| Automotive Polarity Protection | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Reverse battery connection protection in 12 V vehicle infotainment head units. IC Role / Device Role / Timing Role: Unidirectional current gate placed between battery input and system power rail. Use Value: Prevents damage from –12 V transients using only 0.50 V forward drop, minimizing voltage loss and thermal rise at 2 A load. | Use Scenario: Secondary-side rectification in 5 V/3 A buck converter for ADAS camera modules. IC Role / Device Role / Timing Role: High-frequency synchronous rectifier replacement with zero gate-drive complexity. Use Value: Enables >92% conversion efficiency at 500 kHz switching due to low VF and 200 pF CT limiting switching losses. |
| Industrial Free-Wheeling Diode | Low-Voltage Inverter Clamping |
Use Scenario: Flyback diode across 24 V solenoid valves in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Energy recirculation path during coil de-energization. Use Value: Absorbs 50 A surge spikes (per IFSM rating) without failure, extending valve driver MOSFET lifetime. | Use Scenario: Voltage clamping in 48 V BLDC motor inverter half-bridges. IC Role / Device Role / Timing Role: Snubberless overvoltage suppression during PWM commutation. Use Value: Limits dv/dt-induced ringing with 40 V VRRM margin above 48 V bus, avoiding false triggering of protection circuits. |
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 (Vishay) | Same SMB package, 40 V VRRM, but VF = 0.55 V @ 2 A and RθJL = 22 °C/W. | Higher conduction loss reduces efficiency in thermally constrained 5 V/2 A rails. | Prefer B240-13 where <0.50 V VF and tighter thermal resistance are required. |
| SS24 (ON Semiconductor) | SMB package, 40 V VRRM, VF = 0.52 V @ 2 A, IR = 0.5 mA @ 25°C (lower leakage at room temp). | Higher IR at 100°C (15 mA vs. B240-13's 20 mA) - less suitable for under-hood ambient. | Choose SS24 only if room-temperature leakage dominates design concern; otherwise B240-13 offers superior high-temp stability. |
Compared with SB240-E3/52 and SS24, B240-13 delivers the lowest forward voltage and best high-temperature leakage performance in SMB form factor, making it optimal for automotive and industrial applications demanding efficiency and thermal robustness.
Availability
B240-13 is available at Aetrix Electronics and suitable for automotive polarity protection, DC-DC converter output rectification, and industrial free-wheeling diode applications requiring stable component supply and AEC-Q101 traceability.
Supply support for B240-13 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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The B220/A–B260/A series targets cost-sensitive, high-reliability power rectification in automotive and industrial systems, emphasizing low VF, surge robustness, and AEC-Q101 compliance without sacrificing manufacturability.
FAQ
What is the maximum junction temperature for B240-13 during continuous operation?
The absolute maximum junction temperature is +150 °C, but sustained operation above +125 °C requires derating IO below 1.5 A per Fig. 4. Thermal design must ensure RθJL (20 °C/W) and PCB copper area keep TJ ≤ 135 °C at full 2.0 A load and +85 °C ambient.
Is B240-13 pin-compatible with B240A-13-F?
No - B240-13 uses SMB (DO-214AA) package, while B240A-13-F uses SMA (DO-214AC). Though electrically identical, their footprints differ: SMB is larger (4.06–4.57 mm wide) and has higher current-handling thermal resistance (20 vs. 25 °C/W), requiring separate PCB layout.
Does B240-13 meet PPAP requirements for automotive production?
Yes - as an AEC-Q101 qualified part, B240-13 supports Production Part Approval Process documentation including material certifications, process flow diagrams, and test reports. Diodes Incorporated provides PPAP packages upon request for qualified automotive customers.
Can B240-13 replace a 1N5819 in existing designs?
Yes, with caveats: B240-13 matches 1N5819's 40 V VRRM and 1 A rating but is rated for 2.0 A average current and uses SMB instead of DO-41. Layout must accommodate SMB footprint and verify thermal margin - its lower VF (0.50 V vs. 0.475 V typical for 1N5819 at 1 A) improves efficiency at higher loads.
B240-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B240-13 FAQ
1.How can I place an order for B240-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B240-13 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 B240-13 reliable?
The price and inventory of B240-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B240-13 is usually 5 days.
3.What payment methods are accepted for B240-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B240-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B240-13?
B240-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B240-13 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 B240-13?
For technical support, including B240-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B240-13 requirements.
6.How does Aetrix verify that B240-13 is sourced from the original manufacturer or authorized distributors?
All B240-13 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 B240-13 meets industry standards.
7.What is the process for return or replacement of B240-13?
All B240-13 units undergo pre-shipment inspection (PSI). If there is an issue with B240-13, 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 B240-13 part is unused and in its original packaging.
Return procedure for B240-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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