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

STMicroelectronics STPS3L60UF

Name: STPS3L60UF
Brand: STMicroelectronics
SKU: STPS3L60UF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS3L60UF

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-221AA, SMB Flat Leads

Datasheet:: STPS3L60UF.pdf

Description:: DIODE SCHOTTKY 60V 3A SMBFLAT

Quantity:: RFQ Add To RFQ list

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Inventory:9,855

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Product details

Overview

STPS3L60UF from STMicroelectronics is a 60 V, 3 A low-forward-voltage Schottky rectifier in SMB Flat Notch package, designed for high-frequency switching applications including DC/DC converters and LED lighting power stages. It delivers typ. 0.53 V forward drop at 3 A and 100 °C, supports 150 °C max junction temperature, and is avalanche rated for robust transient handling.

For engineers reviewing the STPS3L60UF datasheet, STPS3L60UF pinout, STPS3L60UF application, or STPS3L60UF equivalent, key selection criteria include forward voltage at operating current and temperature, thermal resistance (R_th(j-l) = 15 °C/W), avalanche energy rating (144 W @ 10 µs), and package-specific derating curves for SMB Flat Notch mounting.

Technical Context

This Schottky diode operates as a unidirectional power rectifier with negligible reverse recovery charge, enabling high-efficiency operation in SMPS topologies up to several hundred kHz. Its low V_F minimizes conduction loss, while its 60 V V_RRM rating targets low-voltage output rails (e.g., 12 V, 5 V, 3.3 V) in isolated and non-isolated converters.

The device is qualified for automotive-grade reliability per AEC-Q101 and features ECOPACK2 compliance. Thermal performance depends critically on PCB copper area under leads - R_th(j-a) drops from ~4.5 °C/W (no copper) to ~1.8 °C/W with 200 cm² per lead on FR4, per Figure 14.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	60 V - Maximum repetitive reverse blocking voltage; sets upper limit for output rectification in ≤12 V secondary-side designs.
I_F(AV)	3 A - Average forward current at T_L = 115 °C for SMB Flat Notch; defines continuous DC output capability with appropriate heatsinking.
V_F(typ.)	0.53 V @ 3 A, 100 °C - Directly determines conduction loss: P_cond ≈ 0.44×I_F(AV) + 0.05×I_F(RMS)².
R_th(j-l)	15 °C/W - Junction-to-leads thermal resistance for SMB Flat Notch; enables accurate thermal modeling when soldered to PCB copper pads.
I_FSM	100 A @ 10 ms - Non-repetitive surge rating; supports inrush current handling during cold-start in battery chargers.
P_ARM	144 W @ 10 µs - Repetitive peak avalanche power; allows safe clamping of inductive switching spikes without external snubbers.

Pinout & Package

STPS3L60UF is packaged in SMB Flat Notch - a surface-mount, lead-free, UL94 V0-compliant variant of the SMB outline optimized for low-profile, high-thermal-performance PCB layouts. The package features two gull-wing leads with cathode band marking.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., transformer secondary center-tap or buck switch node); must be routed with low-inductance trace.
Cathode	Forward current exit point / output node	Connected to output capacitor and load; polarity marked by band on package; critical for correct rectification direction.

Key Features

Feature	Design Value
Negligible switching losses	No reverse recovery charge (Q_rr ≈ 0), eliminating turn-off loss and EMI in high-frequency SMPS (>100 kHz).
Low forward voltage drop	0.53 V typ. @ 3 A/100 °C reduces conduction loss by ~30% vs. standard silicon diodes, improving efficiency in 5–12 V outputs.
Avalanche rated	144 W peak avalanche power enables reliable operation under inductive switching stress without external protection.
ECOPACK2 compliant	Lead-free, RoHS-compliant, halogen-free packaging meeting stringent environmental requirements for industrial and telecom applications.

Applications

Telecom Battery Charger

LED Driver Secondary Rectification

Use Scenario: Compact AC/DC adapter for 48 V telecom systems with tight space constraints and high efficiency targets.

IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter, converting high-frequency transformer secondary AC to regulated DC.

Use Value: Low V_F and SMB Flat Notch footprint reduce board area and thermal pad requirements while maintaining >90% efficiency at full load.

Use Scenario: Constant-current LED driver for street lighting, where secondary-side rectification feeds buck or linear current regulator.

IC Role / Device Role / Timing Role: High-frequency synchronous rectifier replacing conventional diodes to minimize heat generation near sensitive LED drivers.

Use Value: 0.53 V forward drop at 100 °C cuts conduction loss by >0.5 W vs. Si diode, reducing thermal stress on adjacent ICs and extending LED lifetime.

12 V Automotive DC/DC Converter

USB-C PD Power Adapter Output Stage

Use Scenario: 24 V to 12 V step-down converter in vehicle infotainment or ADAS modules requiring AEC-Q101 qualification.

IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier in active-clamp forward or LLC resonant topology.

Use Value: Avalanche rating withstands voltage spikes from parasitic inductance in high-current 12 V bus routing; R_th(j-l) = 15 °C/W enables direct thermal coupling to chassis ground plane.

Use Scenario: Multi-output USB-C PD adapter delivering 5 V/9 V/15 V/20 V with independent secondary-side rectification per rail.

IC Role / Device Role / Timing Role: Primary rectifier for 5 V and 9 V outputs in compact, fanless adapters operating at ≥200 kHz switching frequency.

Use Value: SMB Flat Notch package fits dense multi-rail layouts; low V_F maintains efficiency across variable loads (0–3 A) without forced air cooling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS3L60U	SMB package (not Notch); R_th(j-l) = 20 °C/W vs. 15 °C/W; same electrical specs.	Less aggressive thermal performance; requires larger copper area for equivalent power dissipation.	Select when standard SMB footprint compatibility is prioritized over minimal thermal resistance.
SS36-E3/57T	Vishay SMB-packaged 60 V/3 A Schottky; V_F = 0.7 V @ 3 A/25 °C (higher than ST's 0.62 V typ.); no avalanche rating specified.	Not suitable for inductive spike-prone circuits without external clamping; higher conduction loss at elevated temperature.	Choose only for cost-sensitive, non-avalanche-critical applications with relaxed thermal margins.

Compared with STPS3L60U and SS36-E3/57T, STPS3L60UF offers superior thermal resistance and guaranteed avalanche ruggedness - critical for compact, high-power-density DC/DC converters where layout space limits copper area and transient immunity is mandatory.

Availability

STPS3L60UF is available at Aetrix Electronics and suitable for telecom battery chargers, LED lighting drivers, and 12 V automotive DC/DC converters requiring stable component supply across production lifecycles.

Supply support for STPS3L60UF 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.

STPS3L60UF belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for space-constrained, high-frequency power conversion in telecom infrastructure, LED lighting, and automotive subsystems.

FAQ

What is the maximum ambient temperature for continuous 3 A operation in SMB Flat Notch package?

At δ = 0.5 (square-wave duty cycle), STPS3L60UF supports 3 A average forward current up to 115 °C ambient temperature when mounted on recommended PCB copper area per Figure 14. Derating begins above this point; at 125 °C ambient, max I_F(AV) drops to ~2.6 A with 200 cm² copper per lead.

Does STPS3L60UF require a heatsink for 3 A operation?

No external heatsink is required. With proper PCB layout - minimum 200 cm² copper area per lead on FR4 (35 µm thickness) - thermal resistance drops to ~1.8 °C/W, keeping junction temperature below 150 °C at 3 A and 115 °C ambient. Thermal performance is fully defined in Figures 2–4 and 14–15.

Is STPS3L60UF AEC-Q101 qualified?

Yes. STPS3L60UF is AEC-Q101 qualified for automotive applications. This qualification covers stress testing for temperature cycling, humidity, high-temperature reverse bias, and mechanical shock - confirming reliability in under-hood and infotainment environments per ST's official product status documentation.

How does the SMB Flat Notch package differ electrically from standard SMB?

Electrically identical - same V_RRM, I_F(AV), V_F, and avalanche rating. The SMB Flat Notch variant improves thermal performance: R_th(j-l) is 15 °C/W vs. 20 °C/W for standard SMB, achieved via optimized leadframe geometry and enhanced thermal path to PCB copper. Mechanical dimensions differ slightly (see Table 4 vs. Table 5).

STPS3L60UF Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-221AA, SMB Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 60 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 620 mV @ 3 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 150 µA @ 60 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMBflat

Operating Temperature - Junction:: 150°C (Max)

STPS3L60UF FAQ

1.How can I place an order for STPS3L60UF through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS3L60UF 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 STPS3L60UF reliable?

The price and inventory of STPS3L60UF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3L60UF is usually 5 days.

3.What payment methods are accepted for STPS3L60UF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3L60UF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS3L60UF?

STPS3L60UF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS3L60UF 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 STPS3L60UF?

For technical support, including STPS3L60UF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3L60UF requirements.

6.How does Aetrix verify that STPS3L60UF is sourced from the original manufacturer or authorized distributors?

All STPS3L60UF 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 STPS3L60UF meets industry standards.

7.What is the process for return or replacement of STPS3L60UF?

All STPS3L60UF units undergo pre-shipment inspection (PSI). If there is an issue with STPS3L60UF, 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 STPS3L60UF part is unused and in its original packaging.

Return procedure for STPS3L60UF:

1.Submit a request within 90 days.

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

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