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STMicroelectronics STPST5H100SFY
- Part No.:
- STPST5H100SFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
STPST5H100SFY.pdf
- Description:
- AUTOMOTIVE 100 V, 5 A POWER SCHO
- Quantity:
- Payment:
- Shipping:
Inventory:5,783
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Product details
Overview
STPST5H100SFY from STMicroelectronics is an AEC-Q101-qualified 5 A, 100 V automotive-grade Schottky trench rectifier in PSMC (TO-277A) package, featuring 0.550 V typical forward voltage at 125 °C and 5 A, 100% avalanche tested, with operating junction temperature up to +175 °C - optimized for flyback converters and ECU power supplies.
For engineers reviewing the STPST5H100SFY datasheet, STPST5H100SFY pinout, STPST5H100SFY application, or STPST5H100SFY equivalent, this device delivers verified low conduction/reverse/switching losses, ECOPACK2 compliance, and thermal robustness critical for high-frequency miniature SMPS in harsh automotive environments.
Technical Context
This Schottky rectifier uses ST's proprietary trench technology to achieve best-in-class VF/IR trade-off per silicon area. Its flat PSMC (TO-277A) package enables efficient conduction cooling with Rth(j-c) = 1.8 °C/W and supports high-density PCB layouts in space-constrained automotive modules.
Designed for unclamped inductive switching, it withstands single-pulse avalanche energy (EAS) up to 1/2 × 300 µH × (9 A)² × VCLDUT, validated across -40 °C to +175 °C junction range. Reverse leakage remains ≤6.5 mA at 125 °C and 70 V, ensuring stable freewheeling and OR-ing performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports input rails up to 70 V DC with margin for transients in 48 V automotive systems |
| IF(AV) | 5 A at Tc = 160 °C - enables continuous operation in compact heatsinkless ECU power stages |
| VF (typ.) | 0.550 V at 5 A, 125 °C - reduces conduction loss to ~2.75 W, critical for thermal budget in sealed enclosures |
| Rth(j-c) | 1.8 °C/W - allows direct mounting to metal-core PCB or chassis for passive thermal management |
| IAS | 9 A - sustains unclamped inductive turn-off events in flyback snubberless designs without failure |
| Tj (max.) | +175 °C - meets under-hood ambient requirements with derating headroom for peak load conditions |
| ECOPACK2 | Lead-free, halogen-free, RoHS-compliant - satisfies global automotive environmental mandates |
Pinout & Package
STPST5H100SFY is housed in a 3-terminal PSMC (TO-277A) surface-mount package with exposed cathode tab for thermal and electrical connection. The package features epoxy body meeting UL94 V0 flammability rating and is optimized for conduction cooling via the tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Forward current input | Primary anode terminal; electrically tied to Anode 2 internally; used for PCB routing flexibility |
| Anode 2 | Forward current input | Secondary anode terminal; shorted to Anode 1 inside die; improves current sharing and thermal symmetry |
| Cathode (Tab) | Forward current return / heat sink interface | Exposed metal tab serving as both cathode connection and primary thermal path to PCB copper or heatsink |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine bay and passenger compartment environments |
| 100% avalanche tested | Each unit screened for unclamped inductive switching reliability - eliminates field failures in flyback topologies |
| Low VF/IR trade-off | Trench architecture achieves 0.550 V VF at 5 A/125 °C while maintaining IR ≤6.5 mA at 70 V/125 °C |
| Flat PSMC package | 0.9–1.2 mm profile enables ultra-thin power modules and improves airflow in stacked board assemblies |
| PPAP capability | Full production part approval process documentation available - required for Tier-1 automotive sourcing |
Applications
| Automotive LED Headlamp Driver | Flyback DC/DC Converter |
|---|---|
|
Use Scenario: High-brightness LED arrays in adaptive front lighting systems requiring compact, thermally robust rectification. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback stage, handling 5 A continuous output current. Use Value: Low VF minimizes power loss in sealed headlamp housings; +175 °C Tj rating ensures reliability at lens-adjacent temperatures. |
Use Scenario: Secondary-side rectification in 12 V–48 V input automotive DC/DC converters powering ADAS sensors. IC Role / Device Role / Timing Role: Freewheeling diode in isolated flyback topology operating at >200 kHz switching frequency. Use Value: Low recovery charge and 9 A IAS rating prevent voltage overshoot during MOSFET turn-off, reducing snubber complexity. |
| ECU Power Supply | Reverse Polarity Protection |
|
Use Scenario: Primary rectifier in compact 5 V/3.3 V buck-derived power supply for engine control units. IC Role / Device Role / Timing Role: Input-stage Schottky rectifier converting alternator AC to regulated DC bus before buck conversion. Use Value: 5 A IF(AV) at 160 °C case temperature enables conduction-cooled design without external heatsink in tight ECU enclosures. |
Use Scenario: OR-ing diode in dual-battery (12 V + 48 V) vehicle architectures to prevent backfeed during fault conditions. IC Role / Device Role / Timing Role: High-current, low-loss blocking element placed in series with battery feed lines. Use Value: 0.550 V VF at full load reduces insertion loss vs. MOSFET-based solutions, simplifying control and improving efficiency at light loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPST5H100AFY | SOD128Flat package (Rth(j-l) = 10 °C/W); lower thermal performance; 26.4 mg weight | Better suited for low-power, leaded-reflow-compatible layouts where board space > thermal priority | Select when footprint constraints dominate over thermal dissipation needs in non-under-hood locations |
| Vishay VS-5EWH10FN-M3/45 | 5 A, 100 V; TO-277 package; VF = 0.62 V @ 5 A/125 °C; no AEC-Q101 or PPAP documentation | Limited to industrial/commercial use; lacks automotive qualification and traceability support | Acceptable only for non-safety-critical, non-OEM programs where cost outweighs qualification requirements |
Compared with STPST5H100AFY and VS-5EWH10FN-M3/45, STPST5H100SFY uniquely combines AEC-Q101 validation, 1.8 °C/W junction-to-case thermal resistance, and production-level avalanche screening - making it the sole choice for thermally demanding, safety-relevant automotive power conversion.
Availability
STPST5H100SFY is available at Aetrix Electronics and suitable for automotive LED lighting, flyback topology power supplies, and ECU power supply designs requiring stable component supply, long-term lifecycle assurance, and full automotive qualification traceability.
Supply support for STPST5H100SFY 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
STPST5H100SFY belongs to ST's automotive-qualified Schottky rectifier portfolio, engineered specifically for high-efficiency, high-reliability DC/DC conversion in engine control, lighting, and ADAS subsystems.
FAQ
What is the maximum allowable case temperature for continuous 5 A operation?
The datasheet specifies IF(AV) = 5 A at Tc = 160 °C for the PSMC package. This means the device can sustain 5 A average forward current continuously when the case (tab) temperature is held at or below 160 °C, assuming proper PCB copper area and thermal vias per Figure 11.
Is STPST5H100SFY pin-compatible with STPST5H100AFY?
No - STPST5H100SFY uses the 3-terminal PSMC (TO-277A) package with cathode tab, while STPST5H100AFY uses the 2-terminal SOD128Flat package. Their footprints, thermal paths, and terminal counts differ; PCB redesign is required for substitution.
Does this device require a gate driver or control signal?
No - STPST5H100SFY is a passive Schottky rectifier diode with no control terminals. It operates solely on forward bias voltage polarity and requires no external drive circuitry, unlike active synchronous rectifiers or MOSFET-based ideal diodes.
Can STPST5H100SFY replace a standard PN junction rectifier in an existing design?
Yes - its 100 V VRRM and 5 A IF(AV) match common 1N5822/1N5823 replacements, but with significantly lower VF (0.55 V vs. ~0.85 V), reduced reverse recovery loss, and higher Tj rating. Thermal layout must be reviewed due to different package thermal behavior.
STPST5H100SFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- TO-277, 3-PowerDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 680 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 11.5 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
- Operating Temperature - Junction:
- -40°C ~ 175°C
STPST5H100SFY FAQ
1.How can I place an order for STPST5H100SFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST5H100SFY 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 STPST5H100SFY reliable?
The price and inventory of STPST5H100SFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST5H100SFY is usually 5 days.
3.What payment methods are accepted for STPST5H100SFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST5H100SFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST5H100SFY?
STPST5H100SFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST5H100SFY 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 STPST5H100SFY?
For technical support, including STPST5H100SFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST5H100SFY requirements.
6.How does Aetrix verify that STPST5H100SFY is sourced from the original manufacturer or authorized distributors?
All STPST5H100SFY 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 STPST5H100SFY meets industry standards.
7.What is the process for return or replacement of STPST5H100SFY?
All STPST5H100SFY units undergo pre-shipment inspection (PSI). If there is an issue with STPST5H100SFY, 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 STPST5H100SFY part is unused and in its original packaging.
Return procedure for STPST5H100SFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST5H100SFY Tags
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