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Diodes Incorporated SDT12A120P5Q-13
- Part No.:
- SDT12A120P5Q-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
SDT12A120P5Q-13.pdf
- Description:
- SCHOTTKY RECTIFIER PDI5
- Quantity:
- Payment:
- Shipping:
Inventory:7,488
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Product details
Overview
SDT12A120P5Q-13 from Diodes Incorporated is a 12A, 120V Trench Schottky barrier rectifier in PowerDI5 package, delivering VF ≤ 0.80 V at 12 A and IR ≤ 500 µA at 120 V/125°C. It serves as a high-efficiency freewheel or output rectifier in DC/DC converters and AC/DC adapters, operating up to +150°C junction temperature with AEC-Q101 qualification.
For engineers reviewing the SDT12A120P5Q-13 datasheet, SDT12A120P5Q-13 pinout, SDT12A120P5Q-13 application, or SDT12A120P5Q-13 equivalent, key selection criteria include forward voltage at 12 A, reverse leakage stability at 125°C, thermal resistance on FR-4 vs. heatsink, and PowerDI5 footprint compatibility with high-density PCB layouts.
Technical Context
This Schottky rectifier uses trench MOS structure to reduce forward voltage while maintaining low reverse leakage across temperature. Its soft, fast switching behavior minimizes EMI in high-frequency switching topologies such as synchronous buck and flyback converters.
The device is rated for 12 A average forward current with 300 A non-repetitive surge capability (8.3 ms), and achieves RθJA = 88°C/W on standard FR-4 and 18°C/W with aluminum heatsink - enabling compact thermal design in space-constrained power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Maximum repetitive reverse blocking voltage; defines safe DC/AC peak voltage handling in rectifier or freewheel roles. |
| IO (AV) | 12 A - Continuous average forward current at TA = +25°C with specified PCB layout; derates to ~7.5 A at +85°C ambient. |
| VF (MAX) | 0.80 V @ IF = 12 A, TJ = +25°C - Low conduction loss enables >95% efficiency in 12 V output DC/DC stages. |
| IR (MAX) | 500 µA @ VR = 120 V, TJ = +125°C - Stable leakage ensures minimal standby power loss in high-temp industrial adapters. |
| TJ Range | –55°C to +150°C - Enables operation in under-hood automotive or sealed industrial enclosures without derating. |
| RθJA | 88°C/W (FR-4, 2 oz Cu) - Determines required copper area for thermal management; 18°C/W achievable with 50 mm × 50 mm Al heatsink. |
Pinout & Package
Package: PowerDI5 - surface-mount, thermally enhanced plastic package with exposed cathode pad; 3.966 mm × 6.504 mm footprint; UL 94V-0 rated molding compound; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to input rail (e.g., switch node in buck converter); requires low-inductance trace routing. |
| Cathode | Output current terminal | Exposed metal pad on bottom surface - must be soldered to large copper pour or heatsink for thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF ≤ 0.72 V @ 12 A, +25°C - reduces I²R losses by ~30% vs. comparable planar Schottkys, improving power density. |
| High-temperature leakage stability | IR ≤ 35 µA @ 120 V, +125°C - maintains <1 mW standby dissipation in hot environments, critical for energy-efficient adapters. |
| Soft, fast switching | No reverse recovery charge (Qrr ≈ 0) - eliminates switching spikes and snubber requirements in 300–500 kHz converters. |
| AEC-Q101 qualified | Qualified for automotive-grade reliability - supports use in infotainment power rails and body control modules without additional qualification. |
Applications
| DC/DC Converter Output Rectification | AC/DC Adapter Secondary Side |
|---|---|
Use Scenario: High-efficiency 12 V/10 A output stage in isolated flyback or forward converter. IC Role / Device Role / Timing Role: Output rectifier conducting during transformer secondary conduction phase. Use Value: 0.72 V VF at full load reduces conduction loss to 8.6 W, enabling smaller heatsinks and higher power density. |
Use Scenario: Secondary-side rectification in universal-input (90–264 VAC) laptop adapter. IC Role / Device Role / Timing Role: Freewheel diode clamping transformer reset energy and conducting output current. Use Value: 150°C max junction temperature allows operation in sealed enclosures without forced air cooling. |
| Automotive Body Control Module | Industrial PLC Power Supply |
Use Scenario: 12 V input protection and reverse polarity blocking in BCM power entry circuit. IC Role / Device Role / Timing Role: Blocking diode preventing battery backfeed during ignition-off state. Use Value: AEC-Q101 qualification ensures robustness against load dump transients and extended temperature cycling. |
Use Scenario: Input rectification in 24 V industrial SMPS powering I/O modules. IC Role / Device Role / Timing Role: Main rectifier converting bridge output to regulated DC bus. Use Value: 300 A IFSM rating withstands inrush surges from bulk capacitors during cold start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-12CTH12-M3/45 | 12 A, 120 V, VF = 0.79 V @ 12 A, but TO-220AC package (larger footprint, higher RθJA = 50°C/W). | Requires through-hole mounting and larger heatsink; unsuitable for ultra-thin or high-density designs. | Select when mechanical robustness or legacy TO-220 compatibility outweighs size constraints. |
| ON Semiconductor SB12E120 | 12 A, 120 V, VF = 0.82 V @ 12 A, PowerFLAT 5x6 package; RθJA = 25°C/W with heatsink. | Higher VF and lower thermal performance than SDT12A120P5Q-13; not AEC-Q101 qualified. | Choose only if PowerFLAT 5x6 footprint is mandated and automotive qualification is unnecessary. |
Compared with VS-12CTH12-M3/45 and SB12E120, SDT12A120P5Q-13 delivers superior thermal efficiency in SMT form factor, AEC-Q101 compliance for automotive use, and lowest VF among PowerDI5-packaged 12 A/120 V Schottkys - making it optimal for space- and temperature-sensitive power conversion.
Availability
SDT12A120P5Q-13 is available at Aetrix Electronics and suitable for DC/DC converters, AC/DC adapters, and automotive body control modules requiring stable component supply, AEC-Q101 reliability, and high-temperature operation.
Supply support for SDT12A120P5Q-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-performance, high-reliability components for power management, signal integrity, and protection.
The SDT12A120P5Q-13 belongs to Diodes' Trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature switching power supplies in automotive and industrial applications.
FAQ
What is the maximum junction temperature and how does it affect PCB layout?
The SDT12A120P5Q-13 has a maximum junction temperature of +150°C. To maintain this limit, the cathode pad must be soldered to ≥100 mm² of 2 oz copper on FR-4, or to an aluminum heatsink for high-power continuous operation. Thermal vias under the pad improve heat transfer to inner layers.
Is SDT12A120P5Q-13 suitable for synchronous rectification replacement?
No - it is a passive Schottky rectifier, not a synchronous MOSFET controller or driver. While its low VF and zero Qrr make it ideal for asynchronous rectification, replacing it with a synchronous solution requires gate drive circuitry, timing control, and MOSFET selection - not a drop-in substitution.
How does leakage current change at elevated temperatures?
IR increases with temperature: ≤0.5 µA at +25°C, ≤35 µA at +125°C, and ≤500 µA at +125°C under full 120 V reverse bias. This predictable rise is inherent to Schottky physics and is fully characterized in the datasheet's Figure 3.
Does the PowerDI5 package require special reflow profile considerations?
Yes - due to its exposed cathode pad and thin mold compound, the SDT12A120P5Q-13 requires peak reflow temperature ≤260°C, time above 217°C ≤60 seconds, and controlled ramp rates to prevent delamination or voiding under the thermal pad. J-STD-020 Level 1 moisture handling applies.
SDT12A120P5Q-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
SDT12A120P5Q-13 FAQ
1.How can I place an order for SDT12A120P5Q-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT12A120P5Q-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 SDT12A120P5Q-13 reliable?
The price and inventory of SDT12A120P5Q-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT12A120P5Q-13 is usually 5 days.
3.What payment methods are accepted for SDT12A120P5Q-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT12A120P5Q-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT12A120P5Q-13?
SDT12A120P5Q-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT12A120P5Q-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 SDT12A120P5Q-13?
For technical support, including SDT12A120P5Q-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT12A120P5Q-13 requirements.
6.How does Aetrix verify that SDT12A120P5Q-13 is sourced from the original manufacturer or authorized distributors?
All SDT12A120P5Q-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 SDT12A120P5Q-13 meets industry standards.
7.What is the process for return or replacement of SDT12A120P5Q-13?
All SDT12A120P5Q-13 units undergo pre-shipment inspection (PSI). If there is an issue with SDT12A120P5Q-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 SDT12A120P5Q-13 part is unused and in its original packaging.
Return procedure for SDT12A120P5Q-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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