STMicroelectronics STPS1L60AFN

Overview

STPS1L60AFN from STMicroelectronics is a 60 V, 1 A surface-mount Schottky rectifier in SMA Flat Notch package, featuring low forward voltage drop (0.50 V typ. at 1 A, 125 °C), avalanche rating, and ECOPACK2 compliance. It delivers negligible switching losses in high-frequency DC–DC converters and auxiliary power supplies for set-top boxes and battery chargers.

For engineers reviewing the STPS1L60AFN datasheet, STPS1L60AFN pinout, STPS1L60AFN application, or STPS1L60AFN equivalent, this device is selected for low-loss rectification in compact, thermally constrained 12–24 V input power stages where junction temperature must remain ≤175 °C under continuous 1 A average forward current.

Technical Context

This Schottky rectifier uses a planar silicon structure optimized for low VF and fast recovery with no minority-carrier storage. Its 60 V VRRM rating supports 24 V bus-derived auxiliary rails while maintaining margin against transient overshoot.

Thermal design relies on conduction cooling via leads: Rth(j-l) = 20 °C/W (max) in SMA Flat Notch configuration, enabling 1 A IF(AV) operation up to 160 °C lead temperature without heatsink-critical for space-constrained lighting and desktop PSU secondary-side layouts.

Key Specifications

Pinout & Package

STPS1L60AFN is housed in an SMA Flat Notch surface-mount package with cathode indicated by a band. The two-terminal device has no internal connections beyond anode and cathode; thermal path is through both leads to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR160-TP and SS16, STPS1L60AFN provides superior thermal performance (20 °C/W Rth(j-l)), guaranteed avalanche capability, and lower VF at operating temperature-making it the preferred choice for thermally demanding, high-reliability auxiliary power stages.

Availability

STPS1L60AFN is available at Aetrix Electronics and suitable for lighting power supplies, desktop auxiliary rails, and battery charger outputs requiring stable component supply across extended production lifecycles.

Supply support for STPS1L60AFN 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

STPS1L60AFN belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, low-voltage secondary-side rectification in space- and thermally-constrained AC–DC and DC–DC power supplies.

FAQ

What is the maximum allowable junction temperature for STPS1L60AFN?

The absolute maximum junction temperature is 175 °C, as specified in Table 1 of DS2133 Rev 12. Operation at this limit requires strict thermal management: lead temperature must be held ≤160 °C, and PCB copper area must be sized to maintain Rth(j-a) ≤35 °C/W under full 1 A load in still air.

Does STPS1L60AFN have a documented avalanche energy rating?

Yes-ST specifies 85 W repetitive peak avalanche power at Tj = 125 °C with tp = 10 µs (Table 1). This corresponds to ~0.85 mJ per pulse and enables reliable operation in unclamped flyback topologies without external snubbers.

How does the SMA Flat Notch package differ electrically from standard SMA?

Both packages share identical die and electrical specs, but SMA Flat Notch features a flattened cathode side for automated optical alignment during pick-and-place, plus tighter mechanical tolerances (e.g., A1 = 0.90–1.10 mm vs. SMA's 1.90–2.45 mm), improving placement yield in high-speed SMT lines.

Can STPS1L60AFN replace STPS1L60A in existing designs?

Yes-both share identical electrical characteristics and thermal ratings. STPS1L60AFN uses the SMA Flat Notch variant of the same SMA footprint, with identical pad dimensions (3.12 mm × 5.52 mm) and thermal performance (Rth(j-l) = 20 °C/W), enabling drop-in replacement without layout changes.