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Diodes Incorporated B540C-13-F
- Part No.:
- B540C-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B540C-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 5A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:868
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Product details
Overview
B540C-13-F from Diodes Incorporated is a 40 V, 5.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.55 V max forward voltage at 5.0 A and 0.5 mA max reverse leakage at rated VR, optimized for low-voltage DC/DC conversion, polarity protection, and freewheeling in power supplies and motor drives.
For engineers reviewing the B540C-13-F datasheet, B540C-13-F pinout, B540C-13-F application, or B540C-13-F equivalent, key selection criteria include its 40 V peak repetitive reverse voltage, 100 A non-repetitive surge rating, 10 °C/W junction-to-terminal thermal resistance, RoHS-compliant matte tin plating, and JEDEC-qualified reliability for commercial and industrial environments.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress avalanche-induced failure during inductive switching events. Its low VF (0.55 V max) and low IR (0.5 mA max at 25°C) enable high-efficiency operation in 3.3 V–12 V output power stages.
The device operates across –55°C to +150°C junction temperature range with 50 °C/W junction-to-ambient thermal resistance on standard FR-4 PCBs. It is not rated for automotive AEC-Q200 but has an automotive-qualified counterpart (B540CQ) under separate documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; sets upper limit for input/output rail isolation in buck, flyback, and OR-ing circuits. |
| IO | 5.0 A - Average rectified forward current; supports continuous conduction mode operation in 5–10 W SMPS designs. |
| VF Max | 0.55 V @ 5.0 A - Low conduction loss enables >92% efficiency in 5 V output converters at full load. |
| IR Max | 0.5 mA @ 40 V, 25°C - Minimal leakage preserves standby power budget in always-on systems. |
| RθJT | 10 °C/W - Enables direct thermal coupling to copper pour or heatsink pad for sustained 5 A operation without derating. |
| IFSM | 100 A @ 8.3 ms - Withstands inrush and short-circuit transients in motor driver freewheel paths. |
| CT | 300 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching noise and EMI in high-frequency (>100 kHz) topologies. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic body with UL 94V-0 flammability rating, 0.21 g mass, cathode indicated by band or notch. Terminals are matte tin-plated for lead-free solderability per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter, motor winding return). |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive, supply VBUS); marked with band/notch. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against voltage transients and prevents edge breakdown during fast dv/dt switching. |
| Low VF (0.55 V max) | Reduces conduction loss by ~35% vs. comparable 40 V silicon rectifiers, lowering thermal stress in compact layouts. |
| JEDEC-qualified reliability | Validated for commercial-grade long-term stability under thermal cycling and humidity bias testing. |
| RoHS & halogen-free compliance | Meets EU RoHS 3 (2015/863/EU), <900 ppm Br/Cl, <1000 ppm Sb - supports green manufacturing and export compliance. |
Applications
| Power Supply Polarity Protection | DC Motor Freewheeling |
|---|---|
Use Scenario: Prevents damage from reverse battery connection in 5–12 V wall adapters and USB-C PD accessories. IC Role / Device Role / Timing Role: Unidirectional current gate placed in series with input rail; conducts only when polarity is correct. Use Value: Eliminates need for series MOSFET or PTC fuse, reducing BOM count and cost while maintaining <100 mΩ effective resistance at 5 A. | Use Scenario: Suppresses inductive kickback during PWM-controlled brushed DC motor commutation. IC Role / Device Role / Timing Role: Freewheeling path across motor terminals, clamping back-EMF to safe levels during H-bridge off-time. Use Value: Limits voltage overshoot to ≤45 V, protecting MOSFETs and enabling 20 kHz+ PWM without snubber networks. |
| Secondary-Side Rectification | OR-ing Diode in Redundant Supplies |
Use Scenario: Output rectification in isolated 5 V/3 A flyback converters for industrial I/O modules. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in low-cost, low-noise applications where control complexity is avoided. Use Value: Achieves 93.5% peak efficiency at 5 V/3 A with <0.55 V drop, reducing secondary-side heat rise by 40% vs. 1N5822. | Use Scenario: Combining two 12 V/3 A AC-DC supplies in telecom shelf power distribution. IC Role / Device Role / Timing Role: Forward-biased diode isolating each supply's output; blocks reverse current during single-supply fault. Use Value: Enables seamless failover with <0.55 V forward drop, limiting power dissipation to 1.65 W per diode at 3 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS54 (Vishay) | Same 40 V VRRM, 5 A IO, but VF = 0.55 V typ (not max); RθJA = 55 °C/W vs. 50 °C/W. | Marginally higher thermal resistance requires larger copper area for same 5 A continuous duty. | Select if legacy SS54 footprint compatibility is required; verify layout thermal margin. |
| MBR540 (ON Semiconductor) | 40 V VRRM, 5 A IO, VF = 0.70 V max - 0.15 V higher conduction loss than B540C-13-F. | Higher VF increases power loss by ~0.75 W at 5 A, requiring additional thermal management. | Prefer for designs already qualified with MBR540; avoid where efficiency or thermal headroom is constrained. |
Compared with SS54 and MBR540, B540C-13-F delivers the lowest guaranteed VF (0.55 V max), best thermal resistance (10 °C/W RθJT), and JEDEC-qualified reliability - making it optimal for space-constrained, high-efficiency 5 A rectification where consistent low-loss performance is critical.
Availability
B540C-13-F is available at Aetrix Electronics and suitable for power supply polarity protection, DC motor freewheeling, secondary-side rectification, and OR-ing diode applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for B540C-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The B520C–B560C series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-sensitive commercial power conversion where low VF, high surge capability, and automated assembly compatibility are prioritized over automotive qualification.
FAQ
What is the maximum junction temperature and how does it affect continuous current rating?
The B540C-13-F has a maximum junction temperature of +150°C. At ambient temperatures above 75°C, the average forward current must be derated linearly from 5.0 A to zero at 150°C, per Figure 7 in the datasheet. This derating ensures thermal stability when mounted on standard FR-4 PCBs with 8 mm² copper pads.
Is B540C-13-F suitable for automotive applications?
No - B540C-13-F is qualified to JEDEC standards for commercial reliability, not AEC-Q200. For automotive use, Diodes offers the pin-compatible B540CQ-13-F variant, which undergoes extended temperature cycling, vibration, and humidity testing per AEC-Q200 requirements.
How does the guard ring structure improve real-world performance?
The guard ring die construction suppresses edge electric field concentration, preventing premature avalanche breakdown during fast voltage transients (e.g., motor commutation spikes). This extends operational life in inductive load applications and improves consistency in surge current handling beyond the rated 100 A IFSM.
Can B540C-13-F replace a 1N5822 in existing designs?
Yes - both are 3 A, 40 V Schottky rectifiers in DO-201AD packages, but B540C-13-F is rated for 5 A and uses the smaller SMC (DO-214AB) package. Layout adaptation is required, and the higher current rating allows margin for future power-upgrades without changing the diode.
B540C-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 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:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- 300pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
B540C-13-F FAQ
1.How can I place an order for B540C-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B540C-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 B540C-13-F reliable?
The price and inventory of B540C-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 B540C-13-F is usually 5 days.
3.What payment methods are accepted for B540C-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B540C-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B540C-13-F?
B540C-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B540C-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 B540C-13-F?
For technical support, including B540C-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B540C-13-F requirements.
6.How does Aetrix verify that B540C-13-F is sourced from the original manufacturer or authorized distributors?
All B540C-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 B540C-13-F meets industry standards.
7.What is the process for return or replacement of B540C-13-F?
All B540C-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B540C-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 B540C-13-F part is unused and in its original packaging.
Return procedure for B540C-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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