STMicroelectronics STPS160U

Overview

STPS160U from STMicroelectronics is a 60 V, 1 A surface-mount Schottky rectifier in SMB package, optimized for high-frequency DC/DC converters and low-voltage secondary rectification. It delivers typ. 0.49 V forward voltage at 1 A and 125 °C, supports 75 A non-repetitive surge current, and features avalanche-rated capability (180 W at 10 µs) for robust transient handling in notebook adapters and battery chargers.

For engineers reviewing the STPS160U datasheet, STPS160U pinout, STPS160U application, or STPS160U equivalent, key selection criteria include its low VF at elevated temperature, junction-to-lead thermal resistance of 23 °C/W, ECOPACK2 compliance, and validated use in synchronous rectifier configurations with MOSFETs.

Technical Context

This Schottky diode operates as a unidirectional power rectifier with zero minority-carrier storage, enabling negligible switching losses and high efficiency in SMPS operating above 100 kHz. Its metal–semiconductor junction yields fast recovery (no reverse recovery time), low IR leakage (<4 µA @ 25 °C), and stable VF across temperature (0.49–0.57 V at 1 A, 25–125 °C).

The device is thermally rated for 150 °C maximum junction temperature and designed for conduction-limited operation-conduction loss modeled as P = 0.49 × IF(AV) + 0.08 × IF²(RMS). Package-specific Rth(j-a) curves confirm thermal performance dependence on PCB copper area, especially critical in SMB-mounted compact adapters.

Key Specifications

Pinout & Package

SMB (DO-214AA) surface-mount package: 2-terminal, cathode-banded, lead-free, UL94 V0 epoxy body (3.30–3.95 mm D, 5.10–5.60 mm E, 0.75–1.50 mm L). Designed for automated placement and reflow soldering on FR4 PCBs with ≥1.62 mm pad width per lead.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS16-E3/5AT and MBR160LSFT1G, STPS160U provides superior thermal efficiency (0.49 V VF at 125 °C), documented avalanche survivability (180 W), and tighter Rth(j-l) tolerance (23 °C/W), making it optimal for space-constrained, high-reliability adapter and DC/DC designs.

Availability

STPS160U is available at Aetrix Electronics and suitable for notebook adapters, battery chargers, and on-board DC/DC converters requiring stable component supply, RoHS-compliant packaging, and consistent thermal performance across production batches.

Supply support for STPS160U 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.

The STPS series targets high-efficiency, high-frequency power conversion-specifically engineered for synchronous rectification, low-voltage secondary-side applications where VF, thermal resistance, and avalanche ruggedness define system reliability.

FAQ

What is the maximum allowable PCB copper area for optimal thermal performance of STPS160U in SMB package?

Per Figure 9 in DS0962 Rev 10, Rth(j-a) drops from ~5.0 °C/W (0 cm² copper) to ~2.0 °C/W with 200 cm² total copper area under both leads on FR4. For typical 1 A operation, ≥50 cm² per lead (100 cm² total) reduces junction temperature rise to <30 °C above ambient, ensuring reliable 150 °C Tj margin.

Can STPS160U replace a standard PN-junction rectifier like 1N4007 in a 12 V adapter?

No-it is not a drop-in replacement. STPS160U has 60 V VRRM (vs. 1000 V for 1N4007) and is optimized for high-frequency switching, not 50/60 Hz line rectification. Using it in AC input stages risks immediate reverse breakdown; it is strictly intended for DC/DC secondary-side or low-voltage SMPS output rectification.

Does STPS160U require a heatsink in 1 A continuous operation?

No external heatsink is required. With 100 cm² of 35 µm copper on FR4, Rth(j-a) ≈ 2.5 °C/W. At 1 A and 0.49 V VF, power dissipation is ~0.49 W, resulting in ~1.2 °C rise above ambient-well within limits. Thermal design relies on PCB copper, not discrete heatsinks.

How does the "Flat Notch" variant (STPS160AFN) differ electrically from STPS160U?

STPS160AFN (SMA Flat Notch) shares identical electrical specs-same VRRM, IF(AV), VF, IFSM, and Tj(max)-but differs mechanically: thinner profile (A1 = 0.9–1.1 mm vs. 1.9–2.45 mm), smaller footprint, and 20 °C/W Rth(j-l). Electrical performance is interchangeable; selection depends on board height and thermal layout constraints.