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Diodes Incorporated B540CE-13
- Part No.:
- B540CE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B540CE-13.pdf
- Description:
- DIODE SCHOTTKY 40V 5A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,051
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Product details
Overview
B540CE-13 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 0.2 mA max reverse leakage at 40 V and 25°C, optimized for low-loss polarity protection and freewheeling in DC/DC converters and power supplies.
For engineers reviewing the B540CE-13 datasheet, B540CE-13 pinout, B540CE-13 application, or B540CE-13 equivalent, this page delivers verified electrical specs, thermal resistance values, junction capacitance, derating curves, and real-world use context for high-efficiency 12–24 V system designs.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced failure and supports automated SMT assembly with lead-free matte tin plating. Its low 0.55 V VF at 5.0 A enables reduced conduction loss versus standard PN diodes, while 340 pF typical junction capacitance at 4 V supports operation up to several MHz in switching regulators.
Thermal design is enabled by RθJA = 50°C/W (FR-4, 1"×1", 2 oz) and RθJC = 20°C/W, allowing sustained 5.0 A operation below 125°C junction temperature with minimal heatsinking. Reverse leakage remains under 0.2 mA at VR = 40 V and TA = 25°C, critical for standby power integrity.
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 | 5.0 A - Continuous average forward current; supports high-current 12 V/24 V rail rectification without forced cooling |
| VF Max | 0.55 V @ 5.0 A, 25°C - Low conduction loss enables >95% efficiency in synchronous rectifier replacement applications |
| IR Max | 0.2 mA @ 40 V, 25°C - Minimal leakage preserves battery life in always-on systems and low-power standby modes |
| RθJA | 50 °C/W - Thermal resistance on standard FR-4 PCB; allows ~3.5 W dissipation before reaching 125°C junction limit |
| CT Typ | 340 pF @ 4 V, 1 MHz - Junction capacitance impacts switching speed and EMI in high-frequency DC/DC topologies |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case, UL 94V-0 rated, cathode indicated by band or notch, weight ≈ 0.21 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in polarity protection; ties to switch node in freewheeling paths |
| Cathode | Forward current exit point | Connected to load/VDD rail in protection; ties to ground or return path in inductive clamp circuits |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances surge immunity against ESD and inductive kickback transients without external TVS |
| Lead-free, RoHS-compliant finish | Matte tin plating meets MIL-STD-202 solderability requirements and global environmental directives |
| Low VF / high efficiency | 0.49 V typ @ 5 A, 25°C reduces I²R losses by ~40% vs. comparable PN rectifiers |
| Halogen- and antimony-free "Green" design | Meets <900 ppm Br/Cl and <1000 ppm Sb thresholds per Diodes Inc. specification DS39459 |
Applications
| DC Power Polarity Protection | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Prevents damage from reversed input connections in 12 V automotive accessories and industrial control modules. IC Role / Device Role / Timing Role: Unidirectional current gate placed between input connector and downstream regulator IC. Use Value: Enables robust reverse-voltage blocking at 40 V with <0.2 mA leakage, eliminating need for series MOSFET or fuse-based schemes. | 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: Freewheeling diode across output inductor; conducts only during non-overlap dead time. Use Value: 0.55 V VF minimizes conduction loss and improves light-load efficiency over silicon alternatives. |
| Low-Voltage Inverter Output Stage | Re-Circulating Diode in Motor Drivers |
Use Scenario: Clamps reactive energy in H-bridge inverters driving solenoids or small BLDC motors at ≤24 V. IC Role / Device Role / Timing Role: Anti-parallel diode across each half-bridge MOSFET to recirculate inductive current. Use Value: 150 A IFSM rating withstands motor startup surges; 340 pF CT limits switching noise coupling. | Use Scenario: Returns back-EMF current during PWM turn-off in brushed DC motor drivers for robotics and actuators. IC Role / Device Role / Timing Role: Parallel diode across motor terminals to provide continuous current path during PWM off-cycle. Use Value: Low RθJC (20°C/W) ensures stable thermal performance under 5 A continuous recirculation duty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB540-E3/54 | Same 40 V VRRM, 5 A IO, but VF = 0.55 V @ 5 A, 25°C; slightly higher IR (0.5 mA) | Higher leakage may impact ultra-low-power standby; identical SMC footprint | Acceptable where leakage <0.5 mA is tolerable and cost sensitivity favors Vishay sourcing |
| SS54HE3/57T | 40 V VRRM, 5 A IO, VF = 0.55 V @ 5 A, 25°C; RθJA = 45°C/W (slightly better thermal) | Improved thermal resistance supports marginally higher ambient operation; same RoHS/Green status | Preferred for thermally constrained layouts where 5°C/W lower RθJA adds reliability headroom |
Compared with SB540-E3/54 and SS54HE3/57T, the B540CE-13 offers tighter IR control (0.2 mA vs. ≥0.5 mA) for low-quiescent systems and Diodes Inc.'s validated guard ring transient protection-critical in noisy industrial environments.
Availability
B540CE-13 is available at Aetrix Electronics and suitable for DC power polarity protection, DC/DC converter freewheeling, and motor driver re-circulating diode applications requiring stable component supply and long-term production continuity.
Supply support for B540CE-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, specializing in high-reliability power management, signal integrity, and protection solutions.
The B540CE-13 belongs to Diodes' SMC-packaged Schottky rectifier product line, engineered for high-current, low-VF operation in commercial and industrial power conversion systems where efficiency, thermal stability, and transient robustness are essential.
FAQ
What is the maximum junction temperature for continuous operation of the B540CE-13?
The B540CE-13 has a storage temperature range of –55°C to +150°C and is rated for continuous operation up to 125°C junction temperature. Derating begins above 25°C ambient per Figure 4 in DS39459, with full 5.0 A current supported up to ~75°C ambient on a standard FR-4 board.
Is the B540CE-13 compatible with lead-free reflow soldering processes?
Yes. The B540CE-13 features matte tin lead-free plating and is qualified per J-STD-020 moisture sensitivity Level 1. It supports peak reflow temperatures up to 260°C and passes MIL-STD-202 Method 208 solderability testing.
Does the B540CE-13 have a specified avalanche rating?
No. As a Schottky rectifier, the B540CE-13 does not specify avalanche energy (EAS) or unclamped inductive switching capability. Its guard ring die construction improves transient robustness, but it must be used within VRRM and IFSM limits-no avalanche operation is guaranteed or characterized.
How does the B540CE-13 compare to the B530CE-13 in terms of forward voltage and leakage?
Both share identical VF (0.55 V max @ 5 A) and IR (0.2 mA max @ rated VR) specifications at 25°C. The key difference is VRRM: B530CE-13 is rated for 30 V, while B540CE-13 is rated for 40 V-making the latter suitable for higher bus voltages without sacrificing conduction loss or leakage performance.
B540CE-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):
- 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:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 340pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -
B540CE-13 FAQ
1.How can I place an order for B540CE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B540CE-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 B540CE-13 reliable?
The price and inventory of B540CE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B540CE-13 is usually 5 days.
3.What payment methods are accepted for B540CE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B540CE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B540CE-13?
B540CE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B540CE-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 B540CE-13?
For technical support, including B540CE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B540CE-13 requirements.
6.How does Aetrix verify that B540CE-13 is sourced from the original manufacturer or authorized distributors?
All B540CE-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 B540CE-13 meets industry standards.
7.What is the process for return or replacement of B540CE-13?
All B540CE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B540CE-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 B540CE-13 part is unused and in its original packaging.
Return procedure for B540CE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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