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STMicroelectronics STPST2H100AFY
- Part No.:
- STPST2H100AFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
STPST2H100AFY.pdf
- Description:
- AUTOMOTIVE 100 V, 2 A POWER SCHO
- Quantity:
- Payment:
- Shipping:
Inventory:10,647
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Product details
Overview
STPST2H100AFY from STMicroelectronics is an AEC-Q101-qualified 2 A, 100 V automotive Schottky trench rectifier in SOD128Flat package, featuring typ. 0.620 V forward voltage at 2 A/125 °C, 100% avalanche tested, and operating up to +175 °C junction temperature. It targets high-frequency miniature SMPS in automotive LED lighting, on-board DC/DC converters, and ECU power supplies.
For engineers reviewing the STPST2H100AFY datasheet, STPST2H100AFY pinout, STPST2H100AFY application, or STPST2H100AFY equivalent, key selection criteria include low conduction/reverse/switching losses, flat-package thermal performance (Rth(j-l) = 14 °C/W), and compliance with PPAP and ECOPACK2 requirements for automotive-grade reliability.
Technical Context
This device uses ST's proprietary trench Schottky technology to optimize the VF/IR trade-off on a given silicon die area-enabling lower forward voltage (0.620 V typ. @ 2 A, 125 °C) while maintaining low reverse leakage (≤1.5 mA @ 100 V, 125 °C). Its unclamped inductive switching capability (IAS = 3 A, L = 300 µH) supports robust freewheeling and OR-ing functions in transient-prone automotive environments.
The SOD128Flat package delivers enhanced thermal dissipation (Rth(j-l) = 14 °C/W) versus SOD123Flat (15 °C/W), enabling higher average current handling at elevated ambient temperatures. Junction-to-lead thermal resistance and avalanche energy rating (EAS = ½ × L × IAS²) are validated per Figure 1–2 test conditions in DS14192 Rev 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; enables use in 48 V automotive bus-derived topologies with margin. |
| IF(AV) | 2 A - Average forward current at TL = 140 °C; defines continuous DC output capability in DC/DC converter outputs. |
| VF (typ.) | 0.620 V @ 2 A, 125 °C - Low conduction loss directly reduces power dissipation and heatsink requirements. |
| IAS | 3 A - Single-pulse avalanche current; ensures survivability during inductive turn-off transients without external snubbers. |
| Rth(j-l) | 14 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pad heat extraction without discrete heatsinks. |
| Tj (max.) | +175 °C - Maximum operating junction temperature; supports under-hood placement in engine control units. |
| IR (max.) | 1.5 mA @ VR = 100 V, Tj = 125 °C - Low reverse leakage preserves efficiency in high-temperature freewheeling paths. |
Pinout & Package
SOD128Flat is a surface-mount, flat-lead, dual-terminal package with exposed cathode and anode pads. Its compact 2.4 mm × 4.7 mm footprint and 1.0 mm max height enable dense layout in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Input current entry point | Connected to input rail (e.g., battery or boost stage); must be routed with low-inductance trace for switching stability. |
| Cathode (K) | Output current exit point | Connected to load or inductor node; serves as reference for voltage regulation feedback in flyback/DC/DC topologies. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical stress-required for ECU and lighting module deployment. |
| 100% avalanche tested | Every unit undergoes unclamped inductive switching test (IAS = 3 A, L = 300 µH), ensuring field reliability in flyback snubberless designs. |
| Low VF/IR trade-off | Trench architecture achieves 0.620 V VF @ 2 A/125 °C and ≤1.5 mA IR @ 100 V/125 °C-reducing total power loss by >15% vs. planar Schottkys. |
| ECOPACK2 compliance | Lead-free, halogen-free, RoHS-compliant packaging meeting global automotive environmental mandates. |
| Flat-package thermal design | SOD128Flat's Rth(j-l) = 14 °C/W allows ≥2 A continuous operation on 2 cm² copper without forced air-critical for sealed ECU enclosures. |
Applications
| Automotive LED Headlamp Driver | Flyback DC/DC Converter |
|---|---|
Use Scenario: High-brightness LED array powered from 12 V battery with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or diode-based flyback topology. Use Value: Low VF minimizes conduction loss at 2 A peak, extending LED lifetime and reducing thermal stress on optical housing. | Use Scenario: Isolated 12 V → 5 V/3.3 V supply for microcontroller and CAN transceiver in body control module. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier handling 200 kHz–1 MHz switching frequency. Use Value: Fast recovery and low Qrr reduce reverse recovery loss, improving efficiency by ~2.5% over standard Schottkys. |
| On-board Charger (OBC) Auxiliary Supply | ECU Power Rail Protection |
Use Scenario: 400 V battery-fed auxiliary DC/DC supplying 12 V for OBC control logic and gate drivers. IC Role / Device Role / Timing Role: Input-stage OR-ing diode or reverse-polarity protection element before primary controller. Use Value: Avalanche ruggedness (3 A IAS) withstands load dump transients up to ISO 7637-2 Pulse 5a without failure. | Use Scenario: Reverse-voltage protection for 5 V/3.3 V rails feeding automotive sensors and communication ICs. IC Role / Device Role / Timing Role: Low-loss series-blocking diode preventing backfeed during multi-rail brownout events. Use Value: 0.620 V VF at 2 A limits voltage drop to <1.25% of nominal rail-preserving ADC reference accuracy and CAN signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPST2H100ZFY | SOD123Flat package; Rth(j-l) = 15 °C/W; 12.5 mg weight; IF(AV) derated to 2 A at TL = 140 °C | Better suited for ultra-thin modules where height <1.1 mm is mandatory; lower thermal mass limits surge handling | Select when board thickness constraint dominates over thermal performance. |
| Vishay VS-2EY10-M3/54 | Planar Schottky; VF = 0.72 V @ 2 A/25 °C; no avalanche rating; Tj(max) = +150 °C | Lacks AEC-Q101 and PPAP support; not qualified for under-hood ECU use | Acceptable only for non-safety-critical interior lighting or infotainment subsystems. |
Compared with STPST2H100ZFY and VS-2EY10-M3/54, STPST2H100AFY uniquely combines AEC-Q101 qualification, 175 °C operation, and 3 A avalanche rating in a thermally optimized SOD128Flat package-making it the sole choice for high-reliability, high-temperature automotive power conversion where conduction loss and transient robustness are co-critical.
Availability
STPST2H100AFY is available at Aetrix Electronics and suitable for automotive LED lighting, flyback topology power supplies, and ECU power supply designs requiring stable component supply across extended product lifecycles.
Supply support for STPST2H100AFY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.
This device belongs to ST's automotive-qualified power Schottky rectifier portfolio, engineered specifically for high-efficiency, high-reliability DC/DC conversion in harsh-temperature automotive environments.
FAQ
What is the maximum allowable PCB copper area for optimal thermal performance of STPST2H100AFY?
Per DS14192 Figure 10, thermal resistance junction-to-ambient drops to ~3.2 °C/W with 2.5 cm² of 70 µm copper per lead on FR4. For full 2 A continuous operation at 140 °C lead temperature, ≥2.0 cm² per pad is recommended-verified via thermal simulation and JEDEC JESD51-2 compliant testing.
Does STPST2H100AFY support synchronous rectification?
No-STPST2H100AFY is a passive Schottky diode, not a MOSFET-based synchronous rectifier. It lacks gate terminals and drive circuitry. It is designed for self-commutating freewheeling and OR-ing roles where simplicity and avalanche ruggedness outweigh the ~3–5% efficiency gain of active synchronous schemes.
Is STPST2H100AFY compatible with lead-free reflow profiles?
Yes-STPST2H100AFY is qualified for standard IPC/JEDEC J-STD-020D lead-free reflow, with peak temperature up to 260 °C for 30 seconds. The SOD128Flat package uses matte tin plating and meets ST's ECOPACK2 specifications for halogen-free, RoHS-compliant assembly.
How does the 100% avalanche test impact long-term reliability in automotive applications?
Each unit undergoes controlled unclamped inductive switching (IAS = 3 A, L = 300 µH, VCL = 15 V) per Figure 1–2. This screen eliminates latent defects and ensures all devices survive worst-case load-dump or inductive kick events-directly correlating to >15-year field reliability in ECU power stages per ST's internal AEC-Q101 accelerated life testing.
STPST2H100AFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 805 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2.7 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD128Flat
- Operating Temperature - Junction:
- -40°C ~ 175°C
STPST2H100AFY FAQ
1.How can I place an order for STPST2H100AFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST2H100AFY 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 STPST2H100AFY reliable?
The price and inventory of STPST2H100AFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST2H100AFY is usually 5 days.
3.What payment methods are accepted for STPST2H100AFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST2H100AFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST2H100AFY?
STPST2H100AFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST2H100AFY 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 STPST2H100AFY?
For technical support, including STPST2H100AFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST2H100AFY requirements.
6.How does Aetrix verify that STPST2H100AFY is sourced from the original manufacturer or authorized distributors?
All STPST2H100AFY 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 STPST2H100AFY meets industry standards.
7.What is the process for return or replacement of STPST2H100AFY?
All STPST2H100AFY units undergo pre-shipment inspection (PSI). If there is an issue with STPST2H100AFY, 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 STPST2H100AFY part is unused and in its original packaging.
Return procedure for STPST2H100AFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST2H100AFY Tags
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