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Diodes Incorporated B520CE-13
- Part No.:
- B520CE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B520CE-13.pdf
- Description:
- DIODE SCHOTTKY 20V 5A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,048
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Product details
Overview
B520CE-13 from Diodes Incorporated is a 20 V, 5.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.55 V max forward voltage at 5.0 A and 0.2 mA max reverse leakage at 20 V, optimized for low-voltage DC power rails in consumer adapters and USB-powered devices.
For engineers reviewing the B520CE-13 datasheet, B520CE-13 pinout, B520CE-13 application, or B520CE-13 equivalent, this device serves as a polarity protection and freewheeling diode where low conduction loss, fast switching, and thermal robustness under continuous 5 A load are critical selection criteria.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced junction breakdown, enabling reliable operation in inductive load switching circuits. Its low 0.55 V VF at 5 A and 340 pF junction capacitance support high-efficiency, high-frequency (>100 kHz) DC-DC conversion stages.
The SMC package delivers 50 °C/W junction-to-ambient thermal resistance on standard FR-4 PCBs, allowing sustained 5 A conduction without forced air cooling when ambient stays below 85 °C - validated per JEDEC JESD51-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage before avalanche breakdown; sets safe operating limit in 12 V nominal systems. |
| IO (AVG) | 5.0 A - Continuous average forward current rating at TA = +25°C; derates linearly to ~3.0 A at +100°C per Fig.4. |
| VF (max) | 0.55 V @ 5.0 A - Forward voltage drop defining conduction loss; yields <2.75 W dissipation at full load. |
| IR (max) | 0.2 mA @ 20 V, 25°C - Reverse leakage current limiting standby power loss in battery-backed circuits. |
| RθJA | 50 °C/W - Thermal resistance from junction to ambient on 1"×1", 2 oz copper FR-4; enables thermal design without heatsink up to ~3.5 A at 70°C ambient. |
| CT | 340 pF @ 4 V, 1 MHz - Junction capacitance affecting high-frequency switching noise and EMI filtering requirements. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated terminals, UL 94V-0 rated, moisture sensitivity level 1, cathode indicated by band or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side of polarity protection or freewheeling path; must handle full 5 A RMS current. |
| Cathode | Forward current exit point | Connected to output/load side; cathode band identifies terminal orientation during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during voltage transients, improving reliability in automotive load-dump or inductive flyback events. |
| Low VF (0.55 V max) | Reduces conduction loss by >40% vs. comparable silicon rectifiers, directly increasing efficiency in 5 V/3.3 V SMPS outputs. |
| Lead-free & halogen-free | Meets RoHS 2 (2011/65/EU) and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb), supporting eco-compliant manufacturing. |
| SMC package footprint | Enables high-current density layout with 0.76–1.52 mm lead height tolerance, compatible with standard reflow profiles (J-STD-020 Level 1). |
Applications
| USB Power Delivery Protection | DC-DC Converter Freewheeling |
|---|---|
Use Scenario: Prevents reverse current flow into host USB ports during hot-plug or cable fault conditions. IC Role / Device Role / Timing Role: Polarity protection diode placed between VBUS and downstream load. Use Value: 0.55 V VF minimizes voltage drop across protection path, preserving ≥4.75 V at load under 3 A USB-C PD sink. | Use Scenario: Provides low-loss return path for inductor current during high-side switch off-time in buck converters. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in 300 kHz–1 MHz non-synchronous buck stages. Use Value: 340 pF CT and fast recovery enable clean turn-off with minimal ringing, reducing EMI filter component count. |
| Industrial Sensor Power Rail | Consumer AC-DC Adapter Output |
Use Scenario: Isolates 24 V sensor supply from back-fed voltage during field wiring errors or shared ground faults. IC Role / Device Role / Timing Role: Reverse polarity blocking element in always-on 24 V industrial I/O modules. Use Value: 0.2 mA IR at 20 V ensures <5 µW standby leakage, critical for battery-buffered sensor nodes with multi-year life targets. | Use Scenario: Output rectification in compact 5 V/2.4 A wall adapters powering smartphones and IoT hubs. IC Role / Device Role / Timing Role: Main output rectifier in flyback or LLC secondary stage. Use Value: 5.0 A IO rating supports peak surge currents up to 150 A (8.3 ms half-sine), meeting IEC 61000-4-5 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB520-E3/54 (Vishay) | Same 20 V VRRM, 5 A IO, but VF = 0.52 V typ @ 5 A; RθJA = 55 °C/W; SMC package. | Slightly lower VF improves efficiency marginally, but higher thermal resistance limits sustained current in confined layouts. | Select when absolute minimum conduction loss dominates over thermal margin in well-ventilated designs. |
| SS52 (ON Semiconductor) | 20 V VRRM, 5 A IO, VF = 0.54 V max @ 5 A; RθJA = 45 °C/W; SMA package (smaller footprint, lower current handling). | SMA package reduces board area but lowers surge rating (IFSM = 100 A vs. 150 A); not drop-in due to different pad layout. | Select only if space-constrained and surge immunity is not required; requires PCB redesign. |
Compared with SB520-E3/54 and SS52, the B520CE-13 offers superior thermal performance (50 °C/W vs. 55/45 °C/W) and highest surge robustness (150 A IFSM), making it optimal for industrial adapters and automotive body electronics where reliability under transient stress is prioritized.
Availability
B520CE-13 is available at Aetrix Electronics and suitable for USB power delivery protection, DC-DC converter freewheeling, and industrial sensor power rail applications requiring stable component supply and long-term manufacturability.
Supply support for B520CE-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, serving industrial, computing, communications, and consumer markets since 1959.
The B520CE-13 belongs to Diodes' SMC-packaged Schottky rectifier product line, engineered specifically for high-current, low-VF rectification in cost-sensitive commercial power supplies and portable electronics.
FAQ
What is the maximum junction temperature for continuous operation of B520CE-13?
The B520CE-13 has a maximum junction temperature (TJ) of +150°C, with storage temperature range from –55°C to +150°C. At 5.0 A DC current and 25°C ambient, junction temperature rise is ~138°C (50 °C/W × 2.75 W), reaching ~163°C - thus derating to ≤3.6 A is required for safe continuous operation at 25°C ambient per Fig.4.
Does B520CE-13 support reflow soldering per J-STD-020?
Yes. The B520CE-13 is rated for moisture sensitivity level 1 and qualified for standard Pb-free reflow profiles per J-STD-020, including peak temperatures up to 260°C. Its matte tin finish ensures solderability per MIL-STD-202, Method 208, with no pre-bake required.
How does the guard ring structure improve reliability in real-world use?
The guard ring die construction prevents premature edge breakdown during voltage transients such as load dump (ISO 7637-2 Pulse 5a) or inductive flyback spikes. This extends device lifetime in automotive body control modules and industrial motor drives where repetitive 40–60 V spikes occur across the diode.
Can B520CE-13 replace a 1N5822 in an existing design?
Yes - both are 3 A, 40 V Schottky rectifiers in DO-201AD packages, but B520CE-13 is rated for 5 A at 20 V in SMC. Direct replacement requires verifying PCB pad layout compatibility (SMC vs. DO-201AD), thermal margin (RθJA 50 vs. ~70 °C/W), and voltage headroom (20 V vs. 40 V), especially in 24 V systems.
B520CE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 20 V
- Capacitance @ Vr, F:
- 340pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -
B520CE-13 FAQ
1.How can I place an order for B520CE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B520CE-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 B520CE-13 reliable?
The price and inventory of B520CE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B520CE-13 is usually 5 days.
3.What payment methods are accepted for B520CE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B520CE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B520CE-13?
B520CE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B520CE-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 B520CE-13?
For technical support, including B520CE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B520CE-13 requirements.
6.How does Aetrix verify that B520CE-13 is sourced from the original manufacturer or authorized distributors?
All B520CE-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 B520CE-13 meets industry standards.
7.What is the process for return or replacement of B520CE-13?
All B520CE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B520CE-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 B520CE-13 part is unused and in its original packaging.
Return procedure for B520CE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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