STMicroelectronics STPS1L60ZFY

Overview

STPS1L60ZFY from STMicroelectronics is an AEC-Q101-qualified automotive Schottky rectifier in SOD123Flat package, rated for 1 A average forward current and 60 V repetitive peak reverse voltage, with typical forward voltage drop of 0.57 V at 25 °C and 1 A, designed for low-voltage, high-frequency free-wheeling and polarity protection in engine control units and body electronics.

For engineers reviewing the STPS1L60ZFY datasheet, STPS1L60ZFY pinout, STPS1L60ZFY application, or STPS1L60ZFY equivalent, key selection criteria include junction-to-lead thermal resistance (20 °C/W), avalanche capability (85 W at 10 µs), surge current rating (50 A), operating junction temperature range (-40 to +175 °C), and surface-mount compatibility in space-constrained automotive modules.

Technical Context

This Schottky rectifier uses a single-chip planar structure optimized for minimal conduction losses and negligible switching losses in DC-DC converters operating above 100 kHz. Its low VF (0.50–0.54 V at 125 °C) and specified avalanche energy handling enable robust operation under transient overvoltage conditions common in 12 V automotive systems.

The device's thermal design relies on conduction cooling via PCB copper pads, with Rth(j-l) = 20 °C/W and Rth(j-a) strongly dependent on copper area (e.g., 120 °C/W on FR4 with no added copper). It is not intended for forced-air or heatsink-mounted use due to its SOD123Flat leadframe-only thermal path.

Key Specifications

Pinout & Package

SOD123Flat is a surface-mount, two-terminal, leadframe-based package with exposed cathode and anode leads on a flat epoxy body (ECOPACK® compliant, UL94 V0). Dimensions: D = 2.50–2.70 mm, E = 1.50–1.80 mm, HD = 3.30–3.70 mm, L = 0.45–0.85 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSS1C200MT1G and VS-1EWH06-M3/5AT, STPS1L60ZFY delivers superior thermal performance (20 °C/W vs. ≥25 °C/W), certified automotive reliability, and guaranteed avalanche energy handling-critical for safety-relevant power stages in modern vehicle ECUs and BCMs.

Availability

STPS1L60ZFY is available at Aetrix Electronics and suitable for engine control units, body control modules, and start-stop DC-DC converters requiring stable component supply with full automotive qualification and traceable lot history.

Supply support for STPS1L60ZFY 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 silicon solutions for automotive, industrial, and power management applications.

STPS1L60ZFY belongs to ST's Automotive Power Schottky Rectifier product line, engineered specifically for high-reliability, thermally constrained 12 V/42 V vehicle subsystems where low VF, AEC-Q101 compliance, and PPAP readiness are mandatory.

FAQ

Is STPS1L60ZFY suitable for use in non-automotive industrial applications?

Yes. While AEC-Q101 qualified and optimized for automotive environments, STPS1L60ZFY meets industrial temperature requirements (-40 to +175 °C) and offers robust avalanche capability and low VF. It is commonly used in industrial DC-DC converters, PoE injectors, and 24 V PLC I/O modules where reliability and thermal efficiency are critical.

What is the minimum recommended PCB copper area for reliable 1 A operation?

Per Figure 8 in the datasheet, a minimum of 1.4 cm² of 35 µm copper per lead (anode and cathode separately) is required to maintain junction temperature below 175 °C at 1 A average current in still air. For higher ambient temperatures or sustained loads, doubling copper area or adding thermal vias improves margin.

Does STPS1L60ZFY require a heatsink?

No. The SOD123Flat package relies solely on conduction through PCB copper; no external heatsink is supported or recommended. Thermal performance is fully defined by Rth(j-l) = 20 °C/W and PCB layout. Adding a heatsink provides no benefit due to lack of mounting surface or thermal interface capability.

How does the 85 W avalanche rating translate to real-world circuit protection?

The 85 W rating applies to 10 µs pulses at Tj = 125 °C and corresponds to ~850 mJ energy (W × s). This enables the device to absorb typical ISO 7637-2 Pulse 5a load-dump transients (up to 120 V, 100 ms) when combined with appropriate series impedance, protecting downstream FETs and regulators without external TVS devices.