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Diodes Incorporated SBM540-13-F
- Part No.:
- SBM540-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- Powermite®3
- Datasheet:
-
SBM540-13-F.pdf
- Description:
- DIODE SCHOTTKY 40V 5A POWERMITE3
- Quantity:
- Payment:
- Shipping:
Inventory:8,252
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Product details
Overview
SBM540-13-F from Diodes Incorporated is a 5A surface-mount Schottky barrier rectifier in POWERMITE®3 package, designed for low-voltage, high-frequency DC/DC conversion, freewheeling, and polarity protection. It delivers 40V peak reverse voltage, 0.45V typical forward voltage at 5A/125°C, 100A non-repetitive surge capability, and 3.2°C/W junction-to-solder-point thermal resistance.
For engineers reviewing the SBM540-13-F datasheet, SBM540-13-F pinout, SBM540-13-F application, or SBM540-13-F equivalent, key selection criteria include forward voltage drop at elevated temperature, thermal resistance under PCB-constrained mounting, reverse leakage at 100°C, surge current derating, and compatibility with automated SMT assembly on FR-4 or GETEK substrates.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress avalanche-induced failure during inductive switching. Its low VF (0.45V typ @ 5A/125°C) minimizes conduction loss in 3.3V–5V output rails, while 250pF total capacitance supports high-frequency operation up to several MHz.
The device operates across –55°C to +125°C junction temperature and requires PCB-level thermal management: pins 1 and 2 must be electrically connected on the board to enable dual-anode configuration, and the bottom-side metal tab (pin 3) serves as cathode heat sink interface with direct thermal path to copper pour.
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 A - Average rectified output current at TC = 90°C; usable up to 4.5A continuous on standard FR-4 with recommended pad layout |
| VFM | 0.45 V @ 5A, 125°C - Confirmed forward drop under worst-case thermal condition; enables <1.2W conduction loss at full load |
| RθJS | 3.2 °C/W - Junction-to-solder-point thermal resistance; enables accurate thermal modeling when mounted per Diodes AP02001 layout |
| IFSM | 100 A - Non-repetitive 8.3ms half-sine surge rating; supports motor drive freewheeling and capacitor charging transients |
| CT | 250 pF @ 4V, 1MHz - Low junction capacitance reduces switching losses and EMI in high-frequency inverters |
Pinout & Package
Package: POWERMITE®3 - Molded plastic case (UL 94V-0), 0.072g mass, moisture sensitivity level 1, matte tin lead finish. Dimensions: 4.03–4.09mm (A), 6.40–6.61mm (B), 1.10–1.14mm (E), 5.01–5.17mm (H), 4.37–4.43mm (J).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Electrically tied to Pin 2 on PCB; forms parallel anode connection to reduce effective series resistance |
| Pin 2 | Anode 2 | Must be shorted to Pin 1 on board; enables 5A current sharing between dual anode paths |
| Pin 3 (Bottom-side tab) | Cathode / Thermal Pad | Exposed metal surface for solder attachment to large copper pour; primary heat extraction path |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during voltage transients, improving reliability in inductive load switching |
| Low VF at high temperature | 0.45V @ 5A/125°C enables >85% efficiency in 5V-output synchronous buck converters |
| PowerMITE®3 package | Enables high power density: 5A rating in 4.1 × 6.5 mm footprint with bottom-side thermal interface |
| RoHS-compliant matte tin plating | Compatible with lead-free reflow profiles (peak 260°C) and eliminates post-assembly cleaning requirements |
Applications
| DC/DC Converter Output Rectification | Automotive Body Control Module Power Supply |
|---|---|
Use Scenario: Secondary-side rectification in 5V/3A isolated flyback converter for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Schottky rectifier replacing diode in synchronous rectifier auxiliary path; handles continuous 3.5A load with minimal conduction loss. Use Value: 0.45V VF at 125°C reduces rectifier power loss by 32% vs. standard 1N5822, lowering heatsink requirement. | Use Scenario: Polarity protection and reverse-battery safeguard in 12V automotive BCM power input stage. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between battery rail and system ground; conducts only during reverse-connection fault. Use Value: 40V VRRM withstands load-dump spikes up to 35V, and 100A IFSM survives jump-start surges without degradation. |
| High-Frequency Inverter Freewheeling | USB-C PD Adapter Secondary Side |
Use Scenario: Freewheeling path in 200kHz resonant LLC half-bridge driving 24V/2A LED driver. IC Role / Device Role / Timing Role: Fast-recovery Schottky providing low-loss current recirculation during MOSFET dead time. Use Value: 250pF CT limits displacement current, reducing gate-drive coupling noise and EMI filter burden. | Use Scenario: Output rectification in 20V/3.25A USB-C PD 65W adapter secondary stage. IC Role / Device Role / Timing Role: Primary output rectifier in center-tapped transformer configuration; shares current across dual anodes. Use Value: Dual-anode (Pins 1+2) design lowers effective RDS(on)-equivalent by 22%, cutting thermal rise by 8°C at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDS540-13-F | Direct replacement per Diodes' obsolescence notice; identical electrical specs, same POWERMITE®3 package, updated marking | No functional change; validated for all SBM540 use cases including automotive and industrial | Select PDS540-13-F for new designs and active BOMs; it supersedes SBM540 with no redesign required |
| SS54-E3/57T | Higher VF (0.55V min @ 5A), larger DO-214AB package, 60V VRRM, no dual-anode configuration | Suitable where higher reverse voltage margin is needed but thermal performance is less critical | Choose only if 60V blocking is mandatory and PCB space allows larger footprint; expect ~15% higher conduction loss |
Compared with SBM540-13-F, PDS540-13-F offers identical performance with updated manufacturing control, while SS54-E3/57T trades lower thermal efficiency for higher voltage rating and legacy package compatibility-making PDS540 the preferred drop-in upgrade.
Availability
SBM540-13-F is available at Aetrix Electronics and suitable for DC/DC converter output rectification, automotive body control module power supply, and high-frequency inverter freewheeling requiring stable component supply despite its obsolete status.
Supply support for SBM540-13-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, serving industrial, computing, consumer, and communications markets since 1960.
The POWERMITE®3 Schottky rectifier product line targets high-efficiency, space-constrained power conversion systems where low forward voltage, thermal manageability, and SMT manufacturability are critical.
FAQ
Is SBM540-13-F still in production?
No-Diodes Incorporated has officially discontinued SBM540-13-F and designated it obsolete per DS30297 Rev. 8. The recommended replacement is PDS540-13-F, which maintains identical electrical, thermal, and mechanical specifications with updated process controls and marking.
What is the correct PCB layout for SBM540-13-F's dual-anode configuration?
Pins 1 and 2 must be electrically connected via a low-impedance copper trace on the PCB, per Diodes Application Note AP02001. The bottom-side cathode tab (Pin 3) requires ≥250 mm² exposed copper pour with ≥6 thermal vias to internal ground plane for optimal RθJA performance.
Can SBM540-13-F be used in automotive applications?
Yes-its –55°C to +125°C operating range, AEC-Q200-compatible construction (guard ring die, matte tin finish), and 100A surge rating meet requirements for non-safety-critical automotive power supplies, including body control modules and infotainment DC/DC stages.
How does SBM540-13-F's thermal performance compare to TO-220 Schottkys?
With RθJS = 3.2°C/W, SBM540-13-F achieves thermal resistance comparable to many TO-220 devices when properly mounted-but in a 4.1×6.5 mm footprint. Its advantage lies in SMT compatibility and elimination of mechanical mounting hardware, not absolute RθJA superiority.
SBM540-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- Powermite®3
- 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:
- 520 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- 250pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Powermite 3
- Operating Temperature - Junction:
- -55°C ~ 125°C
SBM540-13-F FAQ
1.How can I place an order for SBM540-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBM540-13-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 SBM540-13-F reliable?
The price and inventory of SBM540-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBM540-13-F is usually 5 days.
3.What payment methods are accepted for SBM540-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBM540-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBM540-13-F?
SBM540-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBM540-13-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 SBM540-13-F?
For technical support, including SBM540-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBM540-13-F requirements.
6.How does Aetrix verify that SBM540-13-F is sourced from the original manufacturer or authorized distributors?
All SBM540-13-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 SBM540-13-F meets industry standards.
7.What is the process for return or replacement of SBM540-13-F?
All SBM540-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SBM540-13-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 SBM540-13-F part is unused and in its original packaging.
Return procedure for SBM540-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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