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

STMicroelectronics STPS3L60UFN

Name: STPS3L60UFN
Brand: STMicroelectronics
SKU: STPS3L60UFN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS3L60UFN

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-221AA, SMB Flat Leads

Datasheet:: STPS3L60UFN.pdf

Description:: DIODE SCHOTTKY 60V 3A SMBFLAT

Quantity:: RFQ Add To RFQ list

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Inventory:9,305

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Product details

Overview

STPS3L60UFN from STMicroelectronics is a 60 V, 3 A low-drop Schottky rectifier in SMB Flat Notch package, designed for high-frequency switching applications including SMPS, DC/DC converters, and LED lighting. It features negligible switching losses, typ. 0.53 V forward voltage at 3 A / 100 °C, avalanche rating up to 144 W (10 µs), and maximum junction temperature of 150 °C.

For engineers reviewing the STPS3L60UFN datasheet, STPS3L60UFN pinout, STPS3L60UFN application, or STPS3L60UFN equivalent, key selection criteria include forward voltage drop at operating current/temperature, thermal resistance (R_th(j-l) = 15 °C/W), avalanche capability, and footprint compatibility with SMB Flat Notch PCB layout.

Technical Context

This Schottky rectifier operates as a unidirectional power switch in low-voltage, high-frequency power conversion stages. Its metal–semiconductor junction enables fast recovery (no minority carrier storage) and eliminates reverse recovery charge, making it suitable for synchronous rectification and high-efficiency topologies like flyback and buck-boost converters.

The device is rated for repetitive peak reverse voltage (V_RRM) of 60 V and average forward current (I_F(AV)) of 3 A under defined thermal conditions (T_L = 115 °C). Its avalanche-rated construction supports transient energy absorption during inductive switching events without failure.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	60 V - Maximum reverse blocking voltage before breakdown; defines usable input/output voltage range in DC/DC designs.
I_F(AV)	3 A - Continuous average forward current at T_L = 115 °C; determines steady-state power handling in compact layouts.
V_F(typ.)	0.53 V @ 3 A, 100 °C - Low conduction loss enabling >92% efficiency in 5–24 V output converters.
R_th(j-l)	15 °C/W - Junction-to-leads thermal resistance (SMB Flat Notch); enables direct PCB copper pad thermal coupling without heatsink.
T_j(max)	150 °C - Maximum junction temperature; allows operation in sealed enclosures or high ambient environments (e.g., telecom battery chargers).
IFSM	100 A @ 10 ms - Non-repetitive surge current rating; withstands inrush and short-circuit transients in battery charging circuits.
P_ARM	144 W @ 10 µs - Repetitive peak avalanche power; provides robustness against inductive kickback in flyback transformer primary snubbers.

Pinout & Package

STPS3L60UFN is packaged in SMB Flat Notch - a surface-mount, lead-free, UL94 V0 epoxy package optimized for thermal performance and space-constrained PCBs. The two-terminal device has cathode marked by a band on the body.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to higher-potential node (e.g., switch node in synchronous rectifier or transformer secondary center-tap).
Cathode	Output current exit point	Connected to output rail or ground return path; polarity marking ensures correct orientation in high-current routing.

Key Features

Feature	Design Value
Negligible switching losses	No reverse recovery charge (Q_rr ≈ 0), eliminating switching loss component in high-frequency (>100 kHz) topologies.
Low forward voltage drop	Typ. 0.53 V @ 3 A / 100 °C reduces conduction loss by ~35% vs. standard silicon diodes, improving thermal margin.
Avalanche rated	144 W peak avalanche power (10 µs) enables reliable operation without external clamping in flyback or LLC resonant converters.
ECOPACK2 compliance	Lead-free, RoHS-compliant, halogen-free packaging meeting industrial and telecom environmental requirements.

Applications

Telecom Battery Charger

LED Driver Secondary Rectification

Use Scenario: Compact, isolated 12 V/2 A battery charger for VoIP gateways with limited board area and no forced airflow.

IC Role / Device Role / Timing Role: Output rectifier in flyback converter secondary side, replacing conventional Si diode to reduce heat generation.

Use Value: 0.53 V V_F lowers conduction loss by 0.45 W vs. 0.75 V diode, enabling 25 mm² copper pour instead of heatsink and passing EN62368 thermal limits.

Use Scenario: Constant-current LED driver for outdoor signage operating at 24 V, 1.5 A with ambient up to 70 °C.

IC Role / Device Role / Timing Role: Synchronous rectifier in buck-derived topology, conducting during low-side MOSFET off-time.

Use Value: R_th(j-l) = 15 °C/W allows direct thermal coupling to 20 mm² internal copper, maintaining T_j < 135 °C without thermal vias.

Industrial DC/DC Module

USB-C PD Adapter Secondary Side

Use Scenario: 48 V to 5 V/3 A isolated DC/DC module for PLC I/O modules with strict EMI and size constraints.

IC Role / Device Role / Timing Role: High-frequency rectifier in active-clamp forward converter, switching at 300 kHz.

Use Value: Zero Q_rr eliminates reverse recovery noise, reducing common-mode EMI by 8 dBµV and simplifying filter design.

Use Scenario: 20 V/3 A USB-C Power Delivery adapter requiring high efficiency and compact form factor.

IC Role / Device Role / Timing Role: Secondary-side rectifier in QR flyback, operating with variable frequency up to 120 kHz.

Use Value: Avalanche rating absorbs leakage inductance spikes during MOSFET turn-off, eliminating need for TVS clamp and saving 3 mm² board area.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS36-E3/57T (Vishay)	Same V_RRM (60 V), I_F(AV) = 3 A, but VF = 0.75 V @ 3 A / 25 °C; R_th(j-l) = 25 °C/W (DO-214AA).	Higher conduction loss and lower thermal performance limit use in >60 °C ambient or high-density layouts.	Select only if SMB Flat Notch footprint is not required and thermal budget permits 0.22 V higher V_F.
SB360-E3/57T (Vishay)	V_RRM = 60 V, I_F(AV) = 3 A, VF = 0.72 V @ 3 A / 25 °C; no avalanche rating specified; DO-214AA package.	Lacks avalanche ruggedness, unsuitable for inductive switching or unclamped flyback designs.	Acceptable only in non-inductive, low-transient applications such as linear regulator input rectification.

Compared with SS36-E3/57T and SB360-E3/57T, STPS3L60UFN delivers lower conduction loss (−0.19 V), superior thermal coupling (15 vs. ≥25 °C/W), and guaranteed avalanche capability-critical for reliability in compact, high-frequency power supplies.

Availability

STPS3L60UFN is available at Aetrix Electronics and suitable for telecom battery chargers, LED lighting drivers, industrial DC/DC modules, and USB-C PD adapters requiring stable component supply and consistent SMB Flat Notch footprint delivery.

Supply support for STPS3L60UFN 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, specializing in power management, analog, microcontrollers, and automotive ICs.

STPS3L60UFN belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for space-constrained, high-frequency power conversion where low V_F, thermal performance, and avalanche ruggedness are critical.

FAQ

What is the maximum allowable ambient temperature for STPS3L60UFN at 3 A continuous load?

At I_F(AV) = 3 A with δ = 0.5 square wave and using the SMB Flat Notch package on a standard FR4 PCB with recommended copper area, the maximum ambient temperature is 75 °C per Figure 2 in DS2134. Exceeding this requires increased copper area or forced cooling to maintain T_j ≤ 150 °C.

Does STPS3L60UFN require a heatsink in typical SMPS applications?

No heatsink is required when mounted per ST's recommended footprint (5.84 × 2.07 mm pad, 1.20 mm solder mask opening) on ≥20 mm² internal copper. Its R_th(j-l) = 15 °C/W enables sufficient self-cooling up to 3 A in natural convection, verified in telecom charger reference designs.

How does the avalanche rating of STPS3L60UFN improve system reliability?

The 144 W repetitive avalanche power rating (10 µs, T_j = 125 °C) allows the device to safely absorb inductive energy from transformer leakage or PCB trace inductance during MOSFET turn-off-eliminating voltage overshoot and preventing catastrophic failure in flyback and forward converters.

Can STPS3L60UFN be used as a replacement for standard PN-junction rectifiers in existing designs?

Yes, provided layout accommodates the SMB Flat Notch footprint and reverse voltage requirements remain ≤60 V. Its zero Q_rr and lower V_F improve efficiency and EMI, but note polarity: cathode marking must align with original diode orientation to avoid reverse conduction.

STPS3L60UFN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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 Notch

Operating Temperature - Junction:: 150°C

STPS3L60UFN FAQ

1.How can I place an order for STPS3L60UFN through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS3L60UFN 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 STPS3L60UFN reliable?

The price and inventory of STPS3L60UFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3L60UFN is usually 5 days.

3.What payment methods are accepted for STPS3L60UFN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3L60UFN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS3L60UFN?

STPS3L60UFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS3L60UFN 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 STPS3L60UFN?

For technical support, including STPS3L60UFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3L60UFN requirements.

6.How does Aetrix verify that STPS3L60UFN is sourced from the original manufacturer or authorized distributors?

All STPS3L60UFN 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 STPS3L60UFN meets industry standards.

7.What is the process for return or replacement of STPS3L60UFN?

All STPS3L60UFN units undergo pre-shipment inspection (PSI). If there is an issue with STPS3L60UFN, 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 STPS3L60UFN part is unused and in its original packaging.

Return procedure for STPS3L60UFN:

1.Submit a request within 90 days.

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

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