STMicroelectronics STPS5L60U

Overview

STPS5L60U from STMicroelectronics is a 5 A average forward current, 60 V repetitive peak reverse voltage surface-mount Schottky rectifier in SMB package, featuring 0.42 V typical forward voltage at 125 °C and 5 A, low thermal resistance (20 °C/W junction-to-lead), and avalanche-rated operation up to 144 W for 10 µs pulses - deployed in notebook adapters and high-frequency DC/DC converters.

For engineers reviewing the STPS5L60U datasheet, STPS5L60U pinout, STPS5L60U application, or STPS5L60U equivalent, this device is selected for low-loss, space-constrained power conversion where fast switching, minimal conduction loss, and thermal robustness under transient surge are critical design requirements.

Technical Context

This Schottky rectifier operates with negligible switching losses due to majority-carrier conduction and lacks reverse recovery charge, enabling efficient operation in high-frequency SMPS topologies above 100 kHz. Its 60 V V_RRM rating targets low-voltage secondary-side rectification in isolated flyback and forward converters.

The device supports surge currents up to 100 A (10 ms sinusoidal) in SMB package and exhibits stable reverse leakage (<100 µA at 125 °C, VR = 60 V), making it suitable for thermally demanding battery charger and set-top box applications with ambient temperatures up to 80 °C.

Key Specifications

Pinout & Package

STPS5L60U is supplied in SMB (DO-214AA) surface-mount package with gull-wing leads. The device has two terminals: anode and cathode, with cathode marked by a band on the package body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR560FCT and VS-50SQ060NTRP, STPS5L60U delivers lower VF and certified avalanche capability - enabling simpler, more reliable designs in compact, thermally constrained AC/DC adapters without added protection components.

Availability

STPS5L60U is available at Aetrix Electronics and suitable for notebook adapters, set-top box power supplies, and DC/DC converters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for STPS5L60U 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 automotive, industrial, and consumer markets.

STPS5L60U belongs to ST's high-efficiency power Schottky rectifier product line, engineered specifically for high-frequency, low-voltage secondary-side rectification in space- and thermal-constrained AC/DC and DC/DC power supplies.

FAQ

What is the maximum allowable PCB copper area to achieve R_th(j-a) ≤ 40 °C/W for STPS5L60U in SMB package?

Per Figure 11 in DS2741 Rev 5, achieving R_th(j-a) ≈ 40 °C/W requires ≥60 cm² of 35 µm-thick copper per lead on FR4 PCB. With 20 cm² per lead (total 40 cm²), R_th(j-a) drops to ~55 °C/W - sufficient for 5 A operation at 50 °C ambient with 25 °C rise. Thermal vias under pads further improve performance.

Does STPS5L60U require a snubber circuit in a 300 kHz flyback converter?

No snubber is required. As a Schottky diode, STPS5L60U has zero reverse recovery charge (Q_rr = 0), eliminating voltage spikes caused by Q_rr-related ringing. Layout-induced parasitic inductance may still cause minor overshoot, but this is mitigated by proper grounding and short cathode traces - not snubbers.

Can STPS5L60U replace a 10 A/60 V Schottky in an existing design?

No - STPS5L60U is rated for 5 A average forward current. Substituting it for a 10 A device risks thermal runaway under full load. Derating to 3.5 A is recommended for continuous operation above 60 °C ambient. For higher current, consider STPS10L60C (10 A) in SMC package.

Is STPS5L60U suitable for automotive infotainment power supplies?

STPS5L60U is qualified per industrial temperature range (–65 °C to +150 °C) but is not AEC-Q101 qualified. It is used in consumer-grade automotive accessories (e.g., aftermarket dashcams), but not recommended for engine-bay or safety-critical modules requiring automotive-grade reliability and qualification.