STMicroelectronics STPS2L60AFN

Overview

STPS2L60AFN from STMicroelectronics is a 60 V, 2 A low-drop power Schottky rectifier in SMA Flat Notch package, optimized for high-frequency switch-mode power supplies and battery chargers. It delivers typ. 0.51 V forward voltage at 2 A and 125 °C, supports 75 A non-repetitive surge current, and features avalanche rating for robustness in transient-prone auxiliary rails.

For engineers reviewing the STPS2L60AFN datasheet, STPS2L60AFN pinout, STPS2L60AFN application, or STPS2L60AFN equivalent, this device is selected for low-conduction-loss rectification in compact, thermally constrained 5–24 V DC-DC stages where efficiency and thermal margin are critical.

Technical Context

This Schottky rectifier operates as a unidirectional, majority-carrier conduction device with no reverse recovery charge-eliminating switching losses in high-frequency (≥100 kHz) topologies. Its low VF and high IF(AV) rating enable efficient operation in continuous conduction mode (CCM) flyback and buck-derived auxiliary supplies.

Thermal performance is defined by Rth(j-l) = 20 °C/W (SMA Flat Notch), requiring PCB copper area ≥1.2 cm² per lead for rated 2 A average current at TL = 120 °C. Avalanche energy rating (115 W, tp = 10 µs) supports inductive load switching without external snubbing.

Key Specifications

Pinout & Package

SMA Flat Notch package: surface-mount, cathode-indicating band, UL94 V0 epoxy, lead-free, 0.039 g mass. Recommended footprint: 5.52 mm × 3.12 mm with 1.20 mm pad width and 1.52 mm spacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR260T3G and SS26-E3/57T, STPS2L60AFN uniquely combines SMA Flat Notch SMT compatibility, 0.51 V ultra-low VF at operating temperature, and 115 W avalanche rating-making it optimal for thermally dense, high-reliability auxiliary rails in industrial and premium consumer power supplies.

Availability

STPS2L60AFN is available at Aetrix Electronics and suitable for lighting drivers, desktop power supplies, and battery chargers requiring stable component supply with consistent thermal and electrical performance across production batches.

Supply support for STPS2L60AFN 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, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

ST's power rectifier product line targets high-efficiency AC-DC and DC-DC conversion, emphasizing low VF, rugged avalanche behavior, and eco-compliant packaging for next-generation energy-efficient power systems.

FAQ

What is the maximum allowable junction temperature for STPS2L60AFN?

The absolute maximum junction temperature is +150 °C, as specified in Table 1 of DS2976. Operation above this limit risks permanent degradation of the Schottky barrier. Derating curves in Figure 3 confirm 2 A average current is sustainable only if ambient temperature remains ≤75 °C with adequate PCB copper area (≥1.2 cm² per lead) for the SMA Flat Notch package.

Does STPS2L60AFN require a heatsink in typical applications?

No external heatsink is required. The SMA Flat Notch package achieves Rth(j-l) = 20 °C/W via conduction through PCB copper. With ≥1.2 cm² of 35 µm-thick copper per lead, the device sustains 2 A average current at TL = 120 °C-sufficient for most auxiliary rails. Heatsinks are unnecessary unless ambient exceeds 85 °C or copper area is severely restricted.

How does the avalanche rating improve system reliability?

The 115 W repetitive avalanche power rating (tp = 10 µs, Tj = 125 °C) allows the diode to safely absorb inductive energy from transformer leakage or PCB trace inductance during MOSFET turn-off. This eliminates the need for external TVS diodes or RC snubbers in flyback and resonant converters, reducing BOM count and layout complexity while maintaining robustness against voltage overshoot.

Is STPS2L60AFN compatible with lead-free reflow soldering processes?

Yes. STPS2L60AFN is qualified for lead-free reflow per JEDEC J-STD-020, with a peak reflow temperature of 260 °C (10 s max). The SMA Flat Notch package uses matte tin plating and meets ECOPACK2 requirements, ensuring compatibility with standard Pb-free assembly lines without delamination or intermetallic formation issues.