STPST5H100UF STMicroelectronics Schottky Diode (Small Outline Diode Flat Lead) In Stock
STPST5H100UF is a 100 V, 5 A power Schottky trench rectifier from STMicroelectronics with a maximum forward voltage of 0.68 V and 130 A non-repetitive peak forward current. Housed in a flat-lead SOD package for efficient PCB mounting and thermal dissipation.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Diode Flat Lead
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- STPST5H100UF Datasheet PDF
- Category
- Schottky Diode
- Price
- From $0.1800(MOQ 10)
- Temp Range
- ?°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 100 V blocking voltage with 5 A continuous forward current rating for robust power rectification in DC-DC converters
- Ultra-low forward voltage drop of 0.68 V maximum reducing conduction losses and improving converter efficiency at 5 A
- 130 A non-repetitive peak forward current capability providing surge immunity for inrush and fault events
- Trench Schottky technology enabling faster reverse recovery than PN diodes for reduced switching losses at high frequency
- SOD flat-lead package offering low parasitic inductance and efficient thermal coupling to PCB copper pours
Applications
The STPST5H100UF serves as an output rectifier or freewheeling diode in buck, boost, and flyback converters operating from 24 V to 48 V bus rails where low forward drop and fast switching reduce losses. It is well suited for synchronous rectification bypass, battery charger output stages, and solar micro-inverter secondary rectification where 100 V blocking and 5 A continuous current match the operating point. Motor drive freewheeling circuits and OR-ing diode applications in redundant power supplies also benefit from its high surge current tolerance.
Specifications
| Factory Lead Time | 19Weeks |
| YTEOL | 6 |
| Additional Feature | FREE WHEELING DIODE |
| Application | POWER |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.68V |
| JESD-30 Code | R-PDSO-F2 |
| Non-rep Pk Forward Current-Max | 130A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Rep Pk Reverse Voltage-Max | 100V |
| Reverse Current-Max | 11.5 µA |
| Reverse Test Voltage | 100V |
| Surface Mount | YES |
| Technology | SCHOTTKY |
| Terminal Form | FLAT |
| Terminal Position | DUAL |
| Package | Small Outline Diode Flat Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 0.68 V forward voltage drop of the STPST5H100UF affect converter efficiency compared to a standard silicon PN rectifier?
At 5 A forward current the STPST5H100UF dissipates a maximum of 3.4 W in conduction losses based on its 0.68 V maximum forward voltage, compared to roughly 5.5 W for a standard silicon PN diode at 1.1 V forward drop. This 2.1 W saving per diode directly improves converter efficiency and reduces heatsink requirements, which is significant in compact 24 V to 48 V power supplies where thermal budget is constrained.
For what peak surge current is the STPST5H100UF rated and how does this protect circuits during startup inrush events?
The STPST5H100UF withstands a non-repetitive peak forward current of 130 A for a single pulse, providing a 26-to-1 ratio over its 5 A continuous rating. This surge margin protects output rectifier stages during capacitor inrush at converter startup, where bulk capacitors can draw spike currents far exceeding the steady-state load current without triggering diode failure or thermal runaway in the rectifier.
In what type of switching converter topology does the STPST5H100UF perform best as a freewheeling diode?
The STPST5H100UF performs best as a freewheeling diode in non-synchronous buck converters operating from 24 V to 100 V bus rails at switching frequencies up to 500 kHz, where its trench Schottky construction minimizes reverse recovery charge and reduces switching losses compared to ultrafast PN diodes. Its 100 V blocking voltage comfortably handles voltage spikes on 48 V bus rails while the 5 A rating matches the inductor ripple current at typical output power levels of 50 W to 150 W.
What package does the STPST5H100UF use and how does it influence PCB thermal management?
The STPST5H100UF uses a flat-lead SOD-type package with a small outline footprint and exposed metal terminals that solder directly to PCB copper pads, enabling thermal spreading through the board copper pour without a separate heatsink. A 1 oz copper polygon of approximately 100 mm² on both sides of the board can keep junction temperature below 125°C at 5 A continuous current in a 25°C ambient, provided thermal resistance from junction to board remains below 20°C/W.
When is the STPST5H100UF a more cost-effective alternative to a synchronous rectification MOSFET in a 48 V output stage?
The STPST5H100UF becomes a more cost-effective alternative to a synchronous MOSFET in output stages where the duty cycle keeps the freewheeling interval below 30% of the switching period, limiting average conduction loss to below 1 W at 5 A load. At switching frequencies below 100 kHz and output currents under 5 A, the Schottky diode eliminates the gate drive IC, bootstrap circuitry, and dead-time control logic required by a synchronous switch, reducing BOM count by 5 to 8 components and simplifying PCB layout.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.5500 | $5.50 |
| 100+ | $0.3600 | $36.00 |
| 500+ | $0.2700 | $135.00 |
| 1000+ | $0.1970 | $197.00 |
| 2500+ | $0.1930 | $482.50 |
| 5000+ | $0.1800 | $900.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”