STMicroelectronics STPS3L60UY

Overview

STPS3L60UY from STMicroelectronics is an automotive-qualified surface-mount Schottky rectifier optimized for high-frequency DC-DC converters, delivering 3 A average forward current, 60 V repetitive peak reverse voltage, and a maximum forward voltage drop of 0.61 V at 125 °C and 3 A. It features avalanche capability (2000 W, 1 µs), AEC-Q101 qualification, and SMB package for space-constrained battery chargers and low-voltage inverters.

For engineers reviewing the STPS3L60UY datasheet, STPS3L60UY pinout, STPS3L60UY application, or STPS3L60UY equivalent, key selection criteria include low conduction loss (VF ≤ 0.61 V @ 125 °C), thermal robustness (Tj max = 150 °C), junction-to-leads thermal resistance (20 °C/W), and surge rating (100 A non-repetitive).

Technical Context

This Schottky rectifier uses a planar silicon structure with metal-semiconductor junction to eliminate minority-carrier storage delay, enabling negligible switching losses in high-frequency (>100 kHz) operation. Its low VF and high IF(AV) support efficient power conversion in compact topologies.

The device is rated for Tj up to 150 °C with defined thermal derating curves, and its 10000 V/µs dV/dt rating ensures stable operation under fast transient conditions. Avalanche energy handling (2000 W, 1 µs) provides robustness against inductive load switching events.

Key Specifications

Pinout & Package

Package: SMB (Surface Mount Body), lead-free, UL94 V0 epoxy, 0.107 g weight, tape-and-reel packaging (2500 pcs/reel). Dimensions per Figure 13: D = 3.30–3.95 mm, E = 5.10–5.60 mm, E1 = 4.05–4.60 mm, L = 0.75–1.50 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB360-E3/54 and VS-3EY60-M3/54, STPS3L60UY offers the lowest VF at elevated temperature and highest specified avalanche power, making it optimal for thermally demanding automotive and industrial DC-DC where efficiency and transient robustness are co-prioritized.

Availability

STPS3L60UY is available at Aetrix Electronics and suitable for automotive DC-DC converters, USB-C PD battery chargers, and industrial PoE+ midspans requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STPS3L60UY 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STPS series targets high-efficiency, high-reliability power conversion in space- and thermal-constrained applications, with emphasis on automotive-grade Schottky rectifiers for 12 V–48 V system architectures.

FAQ

What is the maximum junction temperature and how does it affect thermal design?

The STPS3L60UY has a maximum operating junction temperature of 150 °C. Its Rth(j-l) = 20 °C/W means that with 3 A average current and VF ≈ 0.55 V, junction temperature rise above leads is ~33 °C - allowing safe operation on 1 oz copper pads without forced air, provided ambient stays below 117 °C.

Is STPS3L60UY suitable for synchronous rectification replacement?

No - STPS3L60UY is a passive Schottky rectifier and cannot replace a synchronous rectifier MOSFET. It lacks gate control and body diode conduction timing; however, it serves as a robust, low-loss alternative where gate drive complexity or cost must be avoided in medium-power (<65 W) flyback or buck converters.

Does this part require a heatsink in typical applications?

Not typically - the SMB package's Rth(j-l) = 20 °C/W and low VF enable adequate thermal dissipation via PCB copper pads alone. For continuous 3 A operation at 105 °C ambient, ≥100 mm² of 1 oz copper per lead is recommended; no external heatsink is needed unless ambient exceeds 110 °C or airflow is restricted.

How does the avalanche rating impact circuit protection design?

The 2000 W repetitive avalanche rating (1 µs pulse, 25 °C) allows the device to safely absorb inductive energy from transformer leakage or MOSFET turn-off without external clamping components. This simplifies flyback designs by eliminating the need for a separate TVS or RCD snubber in many 30–65 W applications.