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Diodes Incorporated PDS540-13
- Part No.:
- PDS540-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 5
- Datasheet:
-
PDS540-13.pdf
- Description:
- DIODE SCHOTTKY 40V 5A POWERDI5
- Quantity:
- Payment:
- Shipping:
Inventory:30,833
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Product details
Overview
PDS540-13 from Diodes Incorporated is a 5A, 40V Schottky barrier rectifier in the POWERDI®5 package, featuring low forward voltage (0.48 V at 5 A, 25°C), high surge capability (150 A IFSM), and AEC-Q101 qualification for automotive reliability. It serves as a low-loss freewheeling diode or polarity protection device in DC-DC converters and 12V/24V automotive power rails.
For engineers reviewing the PDS540-13 datasheet, PDS540-13 pinout, PDS540-13 application, or PDS540-13 equivalent, key selection criteria include forward voltage at operating current, thermal resistance (RθJS = 4.0°C/W), reverse leakage at elevated temperature, surge rating, and AEC-Q101 compliance for under-hood deployment.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche failure and sustain repetitive 40 V reverse blocking. Its low VF enables high-efficiency operation in low-voltage, high-frequency switching topologies where conduction loss dominates thermal design.
The POWERDI®5 package delivers superior thermal performance versus SOD-123 or SMA: RθJS of 4.0°C/W enables 5 A continuous current with minimal heatsinking on standard FR-4 PCBs, while its lead-free, halogen-free "Green" construction meets automotive environmental requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage; defines safe DC blocking in 12V/24V systems with transients up to ISO 7637-2 Pulse 1/2a. |
| IO | 5 A - Average forward current at TA = 25°C; derates to ~3.2 A at 85°C ambient per Fig. 6. |
| VF @ 5A, 25°C | 0.48 V - Directly reduces conduction loss to ≤2.4 W at full load, lowering thermal stress in compact layouts. |
| IFSM | 150 A - Non-repetitive peak surge rating; withstands cold-crank and load-dump events without failure. |
| RθJS | 4.0 °C/W - Junction-to-solder-point thermal resistance; enables direct thermal coupling to copper pour for passive cooling. |
| IR @ 40V, 125°C | 15 mA - Reverse leakage at max junction temperature; impacts standby power in always-on automotive modules. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
POWERDI®5 is a surface-mount, 2-terminal plastic package with exposed cathode pad for thermal enhancement. Dimensions: 3.966 mm × 6.504 mm × 1.10 mm (L × W × A), weight ≈ 0.093 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to source/positive rail; requires minimum 1.8 mm × 1.1 mm copper pad (Note 10) for thermal and mechanical integrity. |
| Cathode | Output current exit point | Exposed metal pad functions as primary thermal path and electrical return; requires ≥6.5 mm × 5.0 mm copper area for optimal RθJA. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Prevents edge breakdown during voltage transients, enabling robust operation in noisy automotive environments. |
| Low VF (0.43 V @ 5A, 125°C) | Maintains efficiency >92% in 5–12 V buck converters even at elevated junction temperatures. |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling (-40°C to +150°C) and humidity testing. |
| Halogen- and antimony-free "Green" | Meets EU Directive 2011/65/EU with Br+Cl <1500 ppm and Sb <1000 ppm - compliant for global OEM supply chains. |
| Lead-free matte tin finish | Solderable per MIL-STD-202 Method 208; compatible with leaded and lead-free reflow profiles without dewetting. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24V DC Power Supply |
|---|---|
Use Scenario: Reverse polarity protection on 12V battery input to microcontroller-based lighting control unit. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from accidental battery reversal during service. Use Value: 0.48 V VF minimizes voltage drop across protection path, preserving >11.5 V at MCU input under 5 A load. | Use Scenario: Freewheeling diode across relay coil in programmable logic controller output stage. IC Role / Device Role / Timing Role: Provides low-loss path for inductive kickback energy dissipation during coil de-energization. Use Value: 150 A IFSM handles repetitive 50–100 A transient spikes without degradation over 10⁶ cycles. |
| USB-C PD Power Path | Telecom DC-DC Converter |
Use Scenario: OR-ing diode in dual-input (battery + adapter) 5 V/3 A power rail for portable test equipment. IC Role / Device Role / Timing Role: Enables seamless source switchover while blocking backfeed between supplies. Use Value: Low IR (0.015 mA @ 25°C) prevents standby drain; 40 V rating accommodates 5 V ±10% tolerance plus ripple margin. | Use Scenario: Output rectifier in isolated 48 V to 12 V flyback converter for remote radio units. IC Role / Device Role / Timing Role: Converts high-frequency transformer secondary AC to regulated DC output. Use Value: 0.52 V VF @ 10 A, 25°C ensures <5.2 W conduction loss at full load, simplifying thermal management in sealed enclosures. |
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 / 5 A rating but in DO-201AD package; RθJA ≈ 75°C/W (vs. 50°C/W for PDS540-13 on polyimide PCB). | Larger footprint and higher thermal resistance limit use in space-constrained automotive modules. | Select when legacy through-hole compatibility or higher surge margin (200 A IFSM) is prioritized over board area and thermal performance. |
| SS54HE3_A/H | 40 V / 5 A in SMA package; VF = 0.55 V @ 5 A, 25°C; no AEC-Q101 qualification. | Not qualified for automotive; suitable only for industrial or consumer applications with lower reliability demands. | Select for cost-sensitive non-automotive designs where AEC-Q101 is not required and 7% higher conduction loss is acceptable. |
Compared with SB540-E3/54 and SS54HE3_A/H, the PDS540-13 offers superior thermal performance in a compact surface-mount package and is the only one qualified to AEC-Q101 - making it the preferred choice for automotive power rail protection and freewheeling where board space, efficiency, and reliability are jointly constrained.
Availability
PDS540-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial 24V power supplies, USB-C PD power paths, and telecom DC-DC converters requiring stable component supply and long-term lifecycle support.
Supply support for PDS540-13 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, manufacturing, and sales operations across Asia, Europe, and North America.
The PDS540 belongs to Diodes' automotive-qualified Schottky rectifier product line, engineered specifically for low-VF, high-surge, thermally efficient operation in harsh-environment power conversion and protection circuits.
FAQ
What is the maximum junction temperature for continuous operation?
The PDS540-13 has an operating junction temperature range of –65°C to +150°C. For reliable continuous operation at 5 A average current, thermal design must ensure TJ remains ≤150°C - achievable with proper copper pad layout per Note 8 (cathode pad 9.4 mm × 7.2 mm) and ambient ≤85°C.
Is the PDS540-13 suitable for synchronous rectification?
No - the PDS540-13 is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. It lacks gate drive interface, timing control, or adaptive turn-on/turn-off logic required for synchronous operation.
How does the guard ring construction improve reliability?
The guard ring die structure surrounds the active junction to distribute electric field gradients and prevent premature edge avalanche breakdown during voltage transients - directly improving survivability in automotive load-dump and ISO 7637-2 pulse events.
What is the recommended PCB pad layout for optimal thermal performance?
For best RθJA (50°C/W), use the cathode pad dimensions specified in Note 8: 9.4 mm × 7.2 mm, and anode pad 2.7 mm × 1.6 mm, on 2 oz. copper polyimide PCB. Thermal vias under the cathode pad further reduce RθJA by up to 15%.
PDS540-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 5
- 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:
- 520 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 250 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 5
- Operating Temperature - Junction:
- -65°C ~ 150°C
PDS540-13 FAQ
1.How can I place an order for PDS540-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDS540-13 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 PDS540-13 reliable?
The price and inventory of PDS540-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDS540-13 is usually 5 days.
3.What payment methods are accepted for PDS540-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDS540-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDS540-13?
PDS540-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDS540-13 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 PDS540-13?
For technical support, including PDS540-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDS540-13 requirements.
6.How does Aetrix verify that PDS540-13 is sourced from the original manufacturer or authorized distributors?
All PDS540-13 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 PDS540-13 meets industry standards.
7.What is the process for return or replacement of PDS540-13?
All PDS540-13 units undergo pre-shipment inspection (PSI). If there is an issue with PDS540-13, 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 PDS540-13 part is unused and in its original packaging.
Return procedure for PDS540-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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