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Diodes Incorporated B250-13
- Part No.:
- B250-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B250-13.pdf
- Description:
- DIODE SCHOTTKY 50V 2A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:4,599
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Product details
Overview
B250-13 from Diodes Incorporated is a 50 V, 2.0 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.70 V forward voltage at 2.0 A, 50 A non-repetitive surge rating, and AEC-Q101 qualification for automotive use. It serves as a low-loss freewheeling diode in DC-DC converters and polarity protection switch in 12 V automotive power rails.
For engineers reviewing the B250-13 datasheet, B250-13 pinout, B250-13 application, or B250-13 equivalent, key selection criteria include its 50 V reverse blocking capability, thermal resistance of 20 °C/W (junction-to-lead), RoHS-compliant matte tin plating, and suitability for high-frequency switching up to 1 MHz with 200 pF junction capacitance.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain reliable operation under repetitive 50 A surge pulses (8.3 ms half-sine). Its low VF enables reduced conduction loss in 5–12 V input buck converters.
The device operates across –65 °C to +150 °C, with leakage current limited to 0.5 mA at rated 50 V reverse voltage and 20 mA at +100 °C - critical for under-hood automotive modules where thermal derating must be managed per Fig. 4 and Fig. 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum peak repetitive reverse voltage; defines safe DC blocking limit in 12 V battery systems with load dump transients. |
| IO | 2.0 A - Average rectified output current at TA = +25°C; usable up to ~1.5 A at +100°C per derating curve. |
| VF @ 2.0A | 0.70 V - Forward voltage drop; determines conduction loss of 1.4 W at full load, enabling >92% efficiency in 5 V output converters. |
| IFSM | 50 A - Non-repetitive surge rating; withstands motor startup spikes and ESD-coupled transients without failure. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance (SMB); enables direct PCB copper pour heatsinking without external thermal vias. |
| CT @ 40V | 200 pF - Junction capacitance at 40 V reverse bias; limits switching speed impact in 100–500 kHz SMPS designs. |
Pinout & Package
Package: SMB (Surface-Mount Small Outline Diode), 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 | Connected to lower-potential side (e.g., switch node in buck converter); requires minimum 2.0 mm² copper pour for thermal management. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or ground return; carries full load current and must avoid narrow traces. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Prevents edge avalanche during voltage transients, eliminating need for external TVS in 12 V automotive load-dump protection. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics modules. |
| Lead-free, halogen-free "Green" design | Meets JESD22-A110 reliability testing and EU Directive 2011/65/EU with <900 ppm Br/Cl and <1000 ppm Sb. |
| High-temperature soldering tolerance | Withstands 260 °C for 10 seconds - compatible with lead-free reflow profiles without delamination or bond lift. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC-DC Converter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply input to BCM microcontroller and CAN transceiver circuitry. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery misconnection. Use Value: 0.70 V VF minimizes voltage drop across protection path, preserving >11.3 V at MCU input during cold-crank conditions. | Use Scenario: Freewheeling diode in synchronous buck converter powering FPGA I/O banks (3.3 V/2 A). IC Role / Device Role / Timing Role: Provides low-loss current path during high-side MOSFET off-time. Use Value: 200 pF CT and fast recovery enable stable operation at 300 kHz without excessive ringing or EMI. |
| LED Headlamp Driver | USB-C Power Delivery Adapter |
Use Scenario: Output rectification in boost-based LED driver supplying 48 V/1.5 A to automotive matrix headlamps. IC Role / Device Role / Timing Role: High-efficiency output stage rectifier handling continuous 1.5 A load. Use Value: 50 A IFSM rating absorbs inrush current from cold LED string without degradation over 10,000 cycles. | Use Scenario: Secondary-side rectification in 20 W USB-C PD adapter (5 V/3 A output). IC Role / Device Role / Timing Role: Low-VF replacement for standard PN diode to improve light-load efficiency. Use Value: 20 °C/W RθJL allows direct thermal coupling to primary-side ground plane, reducing case temperature by 12 °C vs. SMA package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB550-E3/54 (Vishay) | Same 50 V VRRM, 2.0 A IO, but VF = 0.72 V @ 2.0 A; SMB package; no AEC-Q101 qualification. | Not approved for automotive under-hood use; suitable for industrial/commercial power supplies only. | Select when AEC-Q101 is not required and cost sensitivity outweighs 0.02 V VF penalty. |
| SS25 (ON Semiconductor) | 50 V VRRM, 2.0 A IO, VF = 0.55 V @ 2.0 A; SMA package; RθJL = 25 °C/W; AEC-Q101 qualified. | Lower VF improves efficiency but higher thermal resistance limits power density in compact layouts. | Select when lowest conduction loss is critical and board space permits larger thermal pad area for SMA. |
Compared with SB550-E3/54 and SS25, B250-13 uniquely balances AEC-Q101 compliance, 0.70 V VF, and 20 °C/W thermal resistance in SMB - making it optimal for space-constrained automotive modules requiring both reliability and thermal performance.
Availability
B250-13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, LED lighting drivers, and USB-C power adapters requiring stable component supply and long-term lifecycle support.
Supply support for B250-13 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 centers across Asia and manufacturing in China, Taiwan, and the US.
The B2xx/A series belongs to Diodes' automotive-qualified Schottky rectifier product line, engineered specifically for high-reliability 12 V and 24 V vehicle electrical systems demanding low VF, robust surge immunity, and extended temperature operation.
FAQ
What is the maximum operating temperature for B250-13 in continuous operation?
The B250-13 is rated for junction temperatures from –65 °C to +150 °C. Continuous operation at full 2.0 A load requires ambient temperature ≤ +85 °C when mounted on a standard FR-4 PCB with recommended pad layout (AP02001), based on its 20 °C/W RθJL and thermal derating curve in DS13004 Figure 4.
Is B250-13 pin-compatible with B250A-13-F?
No - B250-13 uses the SMB package (4.06–4.57 mm width), while B250A-13-F uses the smaller SMA package (2.29–2.92 mm width). Their footprints, thermal pads, and mechanical dimensions differ; PCB layout and thermal design must be revised for interchange.
Does B250-13 support lead-free reflow soldering?
Yes - B250-13 has matte tin-plated terminals qualified for lead-free reflow, with specified tolerance of +260 °C for 10 seconds per MIL-STD-202 Method 208, matching JEDEC J-STD-020 moisture sensitivity Level 1 requirements.
How does the guard ring construction improve reliability in automotive applications?
The guard ring die structure prevents premature edge breakdown during load-dump transients (ISO 7637-2 Pulse 5a) by redistributing electric field stress away from junction periphery. This eliminates parametric shift or catastrophic failure observed in non-guard-ring Schottky devices under repeated 100 V/100 ms surges.
B250-13 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):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- 200pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
B250-13 FAQ
1.How can I place an order for B250-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B250-13 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 B250-13 reliable?
The price and inventory of B250-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B250-13 is usually 5 days.
3.What payment methods are accepted for B250-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B250-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B250-13?
B250-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B250-13 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 B250-13?
For technical support, including B250-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B250-13 requirements.
6.How does Aetrix verify that B250-13 is sourced from the original manufacturer or authorized distributors?
All B250-13 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 B250-13 meets industry standards.
7.What is the process for return or replacement of B250-13?
All B250-13 units undergo pre-shipment inspection (PSI). If there is an issue with B250-13, 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 B250-13 part is unused and in its original packaging.
Return procedure for B250-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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