STMicroelectronics STPS130AFN

Overview

STPS130AFN from STMicroelectronics is a 30 V, 1 A surface-mount Schottky rectifier in SMA Flat Notch package, optimized for low forward voltage (0.37 V typ. at 125 °C, 1 A) and high-frequency DC/DC converter secondary-side rectification. It features avalanche rating, ECOPACK2 compliance, and thermal resistance of 20 °C/W (junction-to-lead), enabling efficient parallel operation with MOSFETs in low-voltage synchronous rectification.

For engineers reviewing the STPS130AFN datasheet, STPS130AFN pinout, STPS130AFN application, or STPS130AFN equivalent, key selection criteria include its 30 V reverse voltage rating, 150 °C max junction temperature, 0.37 V forward drop at 1 A/125 °C, avalanche energy capability (86 W at 10 µs), and SMA Flat Notch footprint compatibility with high-density PCB layouts.

Technical Context

This Schottky rectifier uses platinum-silicide barrier technology to achieve low VF while maintaining controlled reverse leakage (≤10 mA at 125 °C, VR = 30 V). Its conduction/reverse loss trade-off targets minimal total power dissipation in compact SMPS topologies where thermal management is constrained.

The device operates up to 150 °C junction temperature with Rth(j-l) = 20 °C/W and supports surge currents up to 60 A (non-repetitive, 10 ms sinusoidal) in SMA Flat Notch packaging. Avalanche rating ensures robustness against inductive switching transients in DC/DC converters and battery charging circuits.

Key Specifications

Pinout & Package

STPS130AFN is housed in an SMA Flat Notch surface-mount package with cathode indicated by a band on the body. The two-terminal configuration supports unidirectional current flow with anode and cathode leads aligned for standard reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR130LSFT1G and SS13-E3/5AT, STPS130AFN delivers superior thermal performance (20 °C/W), lower forward drop (0.37 V), and guaranteed avalanche ruggedness-making it optimal for space-constrained, high-reliability DC/DC secondaries where thermal density and transient resilience are design-critical.

Availability

STPS130AFN is available at Aetrix Electronics and suitable for SSD power rail rectification, telecom DC/DC modules, and cordless appliance power supplies requiring stable component supply across extended production cycles.

Supply support for STPS130AFN 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.

STPS130AFN belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, low-voltage secondary-side rectification in miniaturized switched-mode power supplies where thermal density and surge robustness are critical.

FAQ

What is the maximum allowable PCB copper area for optimal thermal performance of STPS130AFN?

Per Figure 11 in DS0933 Rev 7, Rth(j-a) drops from ~50 °C/W to 25 °C/W when copper surface under each lead increases from 0 to 100 cm² on FR4 board. For most 4-layer boards, 25 mm² per lead (5 mm × 5 mm) achieves Rth(j-a) ≈ 35 °C/W, sufficient to sustain 1 A at 85 °C ambient without forced air.

Can STPS130AFN be used in parallel with other Schottky diodes to increase current capacity?

Yes-its matched VF temperature coefficient (−1.5 mV/°C) enables stable current sharing. ST recommends using identical part numbers, symmetric PCB traces, and shared thermal pad to limit imbalance to <10% at 1 A total load. Avoid mixing with non-ST Schottkys due to VF dispersion.

Is STPS130AFN suitable for automotive applications per AEC-Q101?

No-STPS130AFN is not AEC-Q101 qualified. While it operates up to 150 °C junction temperature, it lacks automotive-specific stress testing (e.g., HTGB, HTRB, ESD >2 kV). For automotive 12 V systems, ST recommends AEC-Q101-qualified alternatives like STPS1H100S.

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

Electrically identical-both share same die, VF, IR, and avalanche characteristics. The Flat Notch variant only modifies mechanical form: reduced mass (0.039 g vs. 0.068 g), tighter D/E dimensions, and cathode band location. No electrical parameter shift occurs; layout rules differ only in footprint (Figure 15 vs. Figure 13).