Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STPS10M120SF

Name: STPS10M120SF
Brand: STMicroelectronics
SKU: STPS10M120SF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STPS10M120SF

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-277, 3-PowerDFN

Datasheet:: STPS10M120SF.pdf

Description:: DIODE SCHOTTKY 120V 10A TO277A

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:33,817

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STPS10M120SF from STMicroelectronics is a 120 V, 10 A average forward current Schottky barrier rectifier in PSMC (TO-277A) package, optimized for high-frequency DC/DC converters and secondary-side rectification. It delivers low forward voltage drop (0.60 V typ. at 10 A, 125 °C), supports 175 °C max junction temperature, and features avalanche capability for robustness in power supply surge events.

For engineers reviewing the STPS10M120SF datasheet, STPS10M120SF pinout, STPS10M120SF application, or STPS10M120SF equivalent, key selection criteria include forward voltage at rated current, thermal resistance (R_th(j-c) = 1.7 °C/W), wettable flanks for automated optical inspection, and ECOPACK®2 compliance for environmental design requirements.

Technical Context

This Schottky rectifier uses a planar metal-silicon junction structure to achieve low conduction losses and fast switching with no minority-carrier storage delay. Its 120 V reverse voltage rating and 340 A non-repetitive surge current support transient-heavy applications like adapter input rectification and reverse battery protection.

The PSMC (TO-277A) package enables direct thermal conduction via the cathode tab, with junction-to-case thermal resistance of 1.7 °C/W and a maximum operating junction temperature of 175 °C - enabling high-power density designs without active cooling in compact SMPS layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	120 V - Withstands peak reverse voltage in 12 V–48 V system auxiliary rails and 100 VAC-derived DC bus lines.
I_F(AV)	10 A - Sustains continuous output current in 60–100 W DC/DC converters with δ = 0.5 duty cycle at T_c = 150 °C.
V_F (typ.)	0.60 V @ 10 A, 125 °C - Reduces conduction loss to ~6 W at full load, critical for efficiency in LED drivers and USB-PD adapters.
T_j (max)	175 °C - Allows operation in thermally constrained enclosures (e.g., sealed LED luminaires) without derating below full current.
R_th(j-c)	1.7 °C/W - Enables >7 W power dissipation with ≤12 °C temperature rise across the case interface when mounted on ≥4 cm² copper.
I_FSM	340 A @ 10 ms - Absorbs inrush surges in hot-plug power modules and battery charger inputs without failure.
IR @ 125 °C	≤10 mA @ V_RRM - Limits standby leakage in always-on auxiliary supplies, preserving low-noise bias generation.

Pinout & Package

STPS10M120SF is housed in a surface-mount PSMC (TO-277A) package with a single cathode tab and two anode terminals. The low-profile (1.1 mm typ.) design includes wettable flanks for solder joint inspection, and thermal path is optimized through the exposed cathode pad.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1	Main current entry point	Connected to input rail or transformer secondary; parallel use with Anode 2 shares current and reduces effective R_DS(on)-like conduction loss.
Anode 2	Secondary current entry point	Enables dual-anode configuration for higher reliability and lower thermal stress in high-current rectification paths.
Cathode (Tab)	Current exit & thermal interface	Exposed metal pad serves as both electrical return and primary heat sink interface; requires soldered copper area ≥4 cm² for rated performance.

Key Features

Feature	Design Value
Low profile (1.1 mm height)	Enables integration into ultra-thin power modules (<2 mm total height), such as USB-C PD adapters and slim LED drivers.
Wettable flanks	Supports automated optical inspection (AOI) of solder fillets on all three terminals, improving manufacturing yield in high-volume SMT lines.
Avalanche capability (170 W, 10 µs)	Withstands repetitive inductive turn-off energy in flyback snubber circuits without degradation, eliminating need for external clamping diodes.
ECOPACK®2 compliance	Meets RoHS, halogen-free, and REACH requirements - certified for use in EU medical, industrial, and consumer equipment with strict environmental mandates.
175 °C junction rating	Permits uninterrupted operation in ambient temperatures up to 105 °C when mounted on ≥6 cm² PCB copper, extending lifetime in enclosed lighting fixtures.

Applications

LED Lighting Driver

USB-C Power Delivery Adapter

Use Scenario: Secondary-side synchronous rectification in quasi-resonant flyback LED drivers powering high-bay luminaires.

IC Role / Device Role / Timing Role: High-efficiency Schottky rectifier replacing MOSFET-based SR controllers where timing complexity must be minimized.

Use Value: 0.60 V forward drop at 10 A reduces conduction loss by 35% vs. standard silicon diodes, increasing driver efficiency from 89% to 92.5% at full load.

Use Scenario: Output rectification in 65 W USB-C PD wall adapters with stacked transformer windings.

IC Role / Device Role / Timing Role: Dual-anode Schottky device handling split secondary currents to balance thermal distribution across PCB layout.

Use Value: Wettable flanks ensure AOI-verified solder joints on both anodes, reducing field failure risk from voided terminations in high-reliability consumer chargers.

Industrial Auxiliary Power Supply

Reverse Battery Protection Circuit

Use Scenario: +24 V auxiliary rail generation in PLC I/O modules with space-constrained PCB real estate.

IC Role / Device Role / Timing Role: Compact 120 V Schottky rectifier delivering 10 A continuous current in TO-277A footprint, replacing larger DPAK solutions.

Use Value: 1.7 °C/W R_th(j-c) allows full-rated current with only 12 °C rise over case temperature, eliminating need for heatsinks in fanless enclosures.

Use Scenario: Polarity protection in 12 V/24 V automotive-grade battery chargers and telematics units.

IC Role / Device Role / Timing Role: Low-V_F Schottky placed in series with battery input to block reverse current during accidental polarity reversal.

Use Value: 0.60 V drop minimizes voltage loss in normal operation, preserving >98% of input voltage for downstream LDOs and microcontrollers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-10EWH12-M3	Same 120 V V_RRM, 10 A I_F(AV), but VF = 0.72 V @ 10 A, 125 °C; R_th(j-c) = 2.0 °C/W.	Larger thermal resistance limits power density; less suitable for ultra-thin adapters.	Prefer when legacy board layout uses SMB-style footprint and wettable flanks are not required.
ON Semiconductor SB10M120	Identical PSMC package and 120 V rating, but VF = 0.75 V @ 10 A, 125 °C; no avalanche rating specified.	Lacks documented avalanche capability - unsuitable for inductive-switching environments without external clamping.	Select only for cost-sensitive, non-surge-prone auxiliary supplies where 0.15 V higher V_F is acceptable.

Compared with VS-10EWH12-M3 and SB10M120, STPS10M120SF offers the lowest forward voltage and verified avalanche robustness - making it optimal for high-efficiency, high-reliability DC/DC stages where thermal headroom and transient immunity are design-critical.

Availability

STPS10M120SF is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C power delivery adapters, and industrial auxiliary power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for STPS10M120SF 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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

STPS10M120SF belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in space-constrained applications - emphasizing low V_F, thermal resilience, and manufacturability.

FAQ

What is the maximum allowable case temperature for continuous 10 A operation?

The datasheet specifies I_F(AV) = 10 A at T_c = 150 °C with δ = 0.5 square pulse. Operation at 150 °C case temperature is permitted continuously under those conditions. Exceeding this requires derating per Figure 1, where IF(AV) drops to ~7.5 A at T_c = 175 °C.

Does STPS10M120SF require a heatsink for 10 A operation?

No dedicated heatsink is required if the cathode tab is soldered to ≥4 cm² of 35 µm copper on FR4. At 10 A and 125 °C junction temperature, the 1.7 °C/W R_th(j-c) yields only ~12 °C rise above case temperature - sufficient for natural convection in most enclosed power supplies.

Can STPS10M120SF replace a standard PN junction rectifier in an existing design?

Yes, provided the circuit does not rely on reverse recovery behavior and the 120 V V_RRM meets system requirements. Its zero-recovery time eliminates switching noise and EMI associated with PN diodes, but note its higher reverse leakage (up to 10 mA at 125 °C) may affect ultra-low-power standby stages.

Is the PSMC (TO-277A) package compatible with standard reflow profiles?

Yes - the PSMC package is qualified for JEDEC J-STD-020 moisture sensitivity level 1 and withstands peak reflow temperatures up to 260 °C. Its epoxy meets UL94 V0 flammability rating, and the wettable flanks align with IPC-A-610 Class 2/3 solder fillet acceptance criteria.

STPS10M120SF 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):: 120 V

Current - Average Rectified (Io):: 10A

Voltage - Forward (Vf) (Max) @ If:: 820 mV @ 10 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 25 µA @ 120 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-277A (SMPC)

Operating Temperature - Junction:: -

STPS10M120SF FAQ

1.How can I place an order for STPS10M120SF through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS10M120SF 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 STPS10M120SF reliable?

The price and inventory of STPS10M120SF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS10M120SF is usually 5 days.

3.What payment methods are accepted for STPS10M120SF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS10M120SF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS10M120SF?

STPS10M120SF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS10M120SF 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 STPS10M120SF?

For technical support, including STPS10M120SF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS10M120SF requirements.

6.How does Aetrix verify that STPS10M120SF is sourced from the original manufacturer or authorized distributors?

All STPS10M120SF 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 STPS10M120SF meets industry standards.

7.What is the process for return or replacement of STPS10M120SF?

All STPS10M120SF units undergo pre-shipment inspection (PSI). If there is an issue with STPS10M120SF, 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 STPS10M120SF part is unused and in its original packaging.

Return procedure for STPS10M120SF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…