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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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