STPS120MF STMicroelectronics Schottky Diode with Dual Cathode (Other) In Stock
STPS120MF is a 1 A, 20 V power Schottky rectifier diode from STMicroelectronics in a DO-222AA surface-mount package. It features a maximum forward voltage of 0.54 V and 0.41 V typical VF, optimized for high-efficiency freewheeling and output rectification in compact DC-DC converters. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STPS120MF Datasheet PDF
- Category
- Schottky Diode with Dual Cathode
- Price
- From $0.0477(MOQ 1)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STPS120MF?
- Ultra-low forward voltage of 0.41 V typical at 1 A enabling high conversion efficiency in DC-DC switching regulators
- DO-222AA surface-mount package with cathode connection for space-efficient PCB placement in power converter output stages
- Freewheeling diode optimized for low-switching-loss operation in synchronous buck and boost converter designs
What is STPS120MF used for?
STPS120MF is ideal as an output rectifier or freewheeling diode in 1 A-class buck, boost, and flyback DC-DC converters operating at switching frequencies up to several hundred kilohertz. Its low 0.41 V forward voltage minimizes conduction losses in portable devices, wearables, and IoT sensor nodes where battery life and thermal management are critical design constraints.
What are the specifications of STPS120MF?
| Factory Lead Time | 15Weeks |
| YTEOL | 6.1 |
| Additional Feature | FREE WHEELING DIODE |
| Application | EFFICIENCY |
| Case Connection | CATHODE |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.54V |
| JEDEC-95 Code | DO-222AA |
| JESD-30 Code | R-PDSO-F2 |
| JESD-609 Code | e3 |
| Non-rep Pk Forward Current-Max | 50A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 20V |
| Reverse Current-Max | 3.9 µA |
| Reverse Test Voltage | 20V |
| Surface Mount | YES |
| Technology | SCHOTTKY |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | FLAT |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
| Country of Origin | Mainland China |
Where can I find the STPS120MF datasheet?
STPS120MF Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STPS120MF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 0.41 V forward voltage of STPS120MF improve efficiency compared to standard silicon rectifiers in a 5 V output buck converter?
A standard silicon diode has a typical forward voltage of 0.7 V to 1.0 V, while STPS120MF drops only 0.41 V at 1 A. In a 5 V output buck converter handling 1 A continuous current, this saves approximately 0.3 W to 0.6 W of conduction loss, improving conversion efficiency by 3% to 6% and reducing junction temperature rise by over 10°C compared to a 1N4001-class rectifier.
What reverse voltage margin does STPS120MF provide in a 12 V to 5 V buck converter application?
STPS120MF is rated for a maximum reverse voltage of 20 V. In a 12 V input buck converter, the freewheeling diode sees peak reverse voltage equal to the input bus voltage plus any ringing transient. With 12 V nominal input and typical 2 V to 4 V ringing, the 20 V VRRM provides a 33% to 67% derating margin, meeting IPC-9592 guidelines for power component reliability.
Why is the DO-222AA package of STPS120MF preferred over axial through-hole diodes in modern SMT power supply designs?
The DO-222AA is a surface-mount package compatible with reflow soldering, enabling fully automated PCB assembly and reducing manufacturing cost per board by eliminating manual insertion steps. Its compact 3.4 mm x 2.6 mm footprint saves over 40% board area compared to a DO-41 axial package, while its exposed cathode pad improves thermal conduction to the PCB copper pour, keeping junction temperature below 125°C at full 1 A load.
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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 |
|---|---|---|
| 1+ | $0.0559 | $0.06 |
| 10+ | $0.0535 | $0.54 |
| 25+ | $0.0512 | $1.28 |
| 12000+ | $0.0494 | $592.80 |
| 24000+ | $0.0486 | $1166.40 |
| 36000+ | $0.0477 | $1717.20 |
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