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STMicroelectronics STPST1H100AFY
- Part No.:
- STPST1H100AFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
STPST1H100AFY.pdf
- Description:
- AUTOMOTIVE 100 V, 1 A POWER SCHO
- Quantity:
- Payment:
- Shipping:
Inventory:11,567
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Product details
Overview
STPST1H100AFY from STMicroelectronics is an AEC-Q101-qualified 1 A, 100 V automotive Schottky trench rectifier in SOD128Flat package, featuring typ. 0.580 V forward voltage at 125 °C and 100% production avalanche testing. It delivers low conduction, reverse, and switching losses for high-frequency DC/DC converters in engine control units.
For engineers reviewing the STPST1H100AFY datasheet, STPST1H100AFY pinout, STPST1H100AFY application, or STPST1H100AFY equivalent, key selection criteria include VF/IR trade-off at 125 °C, junction-to-lead thermal resistance of 15 °C/W, avalanche energy rating (EAS), flat-package thermal mounting requirements, and SOD128Flat footprint compatibility with automotive PCB layouts.
Technical Context
This device employs ST's proprietary trench Schottky technology to optimize forward voltage versus reverse leakage across -40 °C to +175 °C junction temperature range. Its 100 V repetitive peak reverse voltage and 2 A single-pulse avalanche current (IAS) support unclamped inductive switching in flyback and OR-ing topologies.
The SOD128Flat package enables compact layout with 4.6–4.8 mm E dimension and 0.55–0.85 mm lead length, while Rth(j-l) = 15 °C/W ensures efficient heat transfer to PCB copper. ECOPACK2 compliance confirms halogen-free, RoHS-compliant construction for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports input rails up to 80 V DC with margin for transients in automotive 12 V/24 V systems |
| IF(AV) | 1 A - rated average forward current at TL = 155 °C, suitable for continuous operation in ECU power supplies |
| VF (typ.) | 0.580 V @ Tj = 125 °C, IF = 1 A - enables <0.6 W conduction loss at full load, reducing thermal stress |
| Rth(j-l) | 15 °C/W - allows direct PCB copper heatsinking without external heatsink in space-constrained modules |
| IAS | 2 A - validated single-pulse avalanche capability under L = 300 µH, VDD = 15 V, enabling robust freewheeling protection |
| Tj (max.) | +175 °C - meets under-hood temperature requirements for engine bay-mounted DC/DC converters |
| ECOPACK2 | Halogen-free, RoHS-compliant - satisfies automotive environmental compliance mandates without derating |
Pinout & Package
SOD128Flat is a surface-mount, flat-lead, two-terminal package with cathode (K) and anode (A) terminals exposed on opposite sides of the molded body. Its low-profile design (A = 0.93–1.03 mm height) and 4.6–4.8 mm E dimension support automated placement and reflow in high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to input rail or switch node; must be routed with low-inductance trace for high-frequency switching |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to output capacitor or ground return; serves as reference for voltage clamping during avalanche events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use across -40 °C to +175 °C, including temperature cycling, HTRB, and UHAST |
| Low VF/IR trade-off | Trench architecture achieves 0.580 V VF @ 125 °C and only 0.48 mA IR @ 70 V, 125 °C - minimizing both conduction and leakage loss |
| 100% production avalanche test | Every unit tested per unclamped inductive switching (UIS) standard, ensuring consistent EAS performance in flyback snubber circuits |
| Flat-package thermal efficiency | SOD128Flat's 15 °C/W Rth(j-l) enables >70% of junction heat to dissipate directly into PCB copper, reducing hotspot risk |
Applications
| Automotive LED Headlamp Driver | Flyback DC/DC Converter |
|---|---|
Use Scenario: High-brightness LED arrays powered from vehicle battery with PWM dimming and overvoltage protection. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous flyback topology, conducting during MOSFET off-time and clamping leakage inductance spikes. Use Value: 0.580 V VF reduces conduction loss by ~15% vs. legacy Schottkys, lowering thermal load on headlamp housing. | Use Scenario: Isolated 12 V-to-5 V/3.3 V supply for ADAS camera module with tight board area and high ambient temperature. IC Role / Device Role / Timing Role: Output rectifier handling 1 A continuous current at >200 kHz switching frequency, managing reverse recovery and EMI. Use Value: Low recovery charge and 100% UIS-tested avalanche capability prevent failure during line transients and load dumps. |
| Engine Control Unit (ECU) Power Supply | Reverse Polarity Protection Circuit |
Use Scenario: Primary 12 V input stage for microcontroller, CAN transceiver, and sensor interface circuitry in engine bay. IC Role / Device Role / Timing Role: Input rectifier and transient clamp, operating continuously at 155 °C board temperature with minimal derating. Use Value: +175 °C Tj(max) and 15 °C/W Rth(j-l) allow full 1 A rating without external heatsink, saving board space. | Use Scenario: Protection against accidental battery reversal in telematics control units and infotainment head units. IC Role / Device Role / Timing Role: OR-ing diode placed in series with power input, blocking reverse current while maintaining low forward drop. Use Value: 0.580 V VF minimizes voltage loss during normal operation, preserving >95% of nominal 12 V rail under 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 |
|---|---|---|---|
| STPS1H100S | SOD123Flat package (Rth(j-l) = 16 °C/W); same VF/IR specs but lower IAS (1.5 A) | Better suited for space-constrained, lower-power lighting modules where avalanche margin is secondary | Select when footprint size is critical and thermal budget allows 1 °C/W higher Rth(j-l) |
| Vishay VSKT1210-M3/86A | 100 V, 1 A, VF = 0.62 V @ 125 °C; TO-277A package; no AEC-Q101 or avalanche test documentation | Limited to non-safety-critical industrial DC/DC; not qualified for under-hood automotive deployment | Consider only for cost-sensitive, non-automotive designs where AEC-Q101 and UIS validation are not required |
Compared with STPS1H100S and VSKT1210-M3/86A, STPST1H100AFY provides superior thermal performance (15 °C/W), guaranteed avalanche robustness, and full AEC-Q101 compliance - making it the only choice for mission-critical automotive power stages requiring PPAP documentation and long-term reliability.
Availability
STPST1H100AFY is available at Aetrix Electronics and suitable for automotive LED lighting, flyback topology power supplies, on-board DC/DC converters, and ECU power supply designs requiring stable component supply across extended temperature ranges and rigorous quality audits.
Supply support for STPST1H100AFY 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 automotive-grade components for industrial, automotive, and consumer markets.
STPST1H100AFY belongs to ST's automotive-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in engine control, lighting, and ADAS subsystems.
FAQ
What is the maximum allowable PCB copper area for optimal thermal performance of STPST1H100AFY?
For SOD128Flat, thermal resistance junction-to-ambient drops to ~3.5 °C/W with ≥4.0 cm² of 70 µm-thick copper per lead. Minimum recommended copper area is 1.5 cm² per lead to maintain Tj ≤ 175 °C at 1 A, TL = 155 °C. Footprint dimensions per Figure 14 must be strictly followed to ensure solder joint integrity and thermal path continuity.
Does STPST1H100AFY support synchronous rectification?
No - STPST1H100AFY is a passive Schottky rectifier and does not integrate gate drive or control logic. It functions as a freewheeling or output rectifier in asynchronous topologies. For synchronous rectification, ST offers dedicated SR controllers (e.g., STSR3) paired with low-RDS(on) MOSFETs, not Schottky diodes.
How is the 100% avalanche test performed during production?
Each STPST1H100AFY undergoes unclamped inductive switching (UIS) testing per JEDEC JESD22-A109, using L = 300 µH, VDD = 15 V, and pulse width calculated to achieve IAS = 2 A. Devices are monitored for parametric shift and catastrophic failure; only units passing EAS = ½ × L × IAS² with no degradation proceed to shipment.
Can STPST1H100AFY replace STPST1H100ZFY in the same PCB layout?
No - STPST1H100ZFY uses SOD123Flat (2.5–2.7 mm D, 1.5–1.8 mm E), while STPST1H100AFY uses SOD128Flat (2.3–2.5 mm D, 4.6–4.8 mm E). The 2.8 mm wider E dimension and different lead spacing make them mechanically incompatible without PCB redesign and footprint validation.
STPST1H100AFY 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 725 mV @ 1 A
- Speed:
- No Recovery Time > 500mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.7 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
STPST1H100AFY FAQ
1.How can I place an order for STPST1H100AFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST1H100AFY 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 STPST1H100AFY reliable?
The price and inventory of STPST1H100AFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST1H100AFY is usually 5 days.
3.What payment methods are accepted for STPST1H100AFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST1H100AFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST1H100AFY?
STPST1H100AFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST1H100AFY 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 STPST1H100AFY?
For technical support, including STPST1H100AFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST1H100AFY requirements.
6.How does Aetrix verify that STPST1H100AFY is sourced from the original manufacturer or authorized distributors?
All STPST1H100AFY 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 STPST1H100AFY meets industry standards.
7.What is the process for return or replacement of STPST1H100AFY?
All STPST1H100AFY units undergo pre-shipment inspection (PSI). If there is an issue with STPST1H100AFY, 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 STPST1H100AFY part is unused and in its original packaging.
Return procedure for STPST1H100AFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST1H100AFY Tags
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1N4448X-TP
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1N4148WX-TP
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