Nexperia USA Inc. PMEG2020EPASX

Overview

PMEG2020EPASX from Nexperia is a 20 V, 2 A low forward voltage Schottky barrier rectifier in a DFN2020D-3 (SOT1061D) package, designed for high-efficiency low-voltage DC-to-DC conversion and reverse polarity protection. It features 385–420 mV forward voltage at 2 A, ≤1900 µA reverse leakage at 20 V, AEC-Q101 qualification, and an exposed cathode pad for thermal management in space-constrained mobile power rails.

For engineers reviewing the PMEG2020EPASX datasheet, PMEG2020EPASX pinout, PMEG2020EPASX application, or PMEG2020EPASX equivalent, key selection criteria include forward voltage drop under pulsed 2 A load, thermal resistance to solder point (12 K/W), AEC-Q101 compliance for automotive subsystems, and compatibility with AOI-enabled reflow assembly on FR4 or ceramic PCBs.

Technical Context

This MEGA Schottky rectifier uses a planar silicon die with integrated guard ring for robust ESD and surge stress protection. Its dual-anode configuration (Pins 1 & 2) and single cathode (Pin 3) enable parallel current handling while minimizing forward conduction loss.

The device operates with zero minority-carrier storage, delivering 50 ns reverse recovery time and negligible switching loss-critical for high-frequency SMPS topologies operating above 20 kHz. Thermal performance is optimized via direct copper exposure on the cathode pad, achieving 12 K/W junction-to-solder-point resistance when mounted on 1 cm² copper.

Key Specifications

Pinout & Package

Encapsulated in an ultra-thin leadless DFN2020D-3 (SOT1061D) package with visible and solderable side pads, the device features an exposed cathode thermal pad on the bottom surface for enhanced heat dissipation and electrical grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB055LAM-30TR and SS22HE3_A/H, PMEG2020EPASX delivers superior thermal performance (12 K/W vs. >40 K/W), tighter VF tolerance (±17.5 mV vs. ±50 mV), and automotive qualification-making it the sole choice for thermally constrained, high-reliability 2 A mobile and automotive power rails.

Availability

PMEG2020EPASX is available at Aetrix Electronics and suitable for battery chargers for mobile equipment, LED backlight for mobile application, automotive infotainment power supply, and high-efficiency DC-to-DC converters requiring stable component supply across production lifecycles.

Supply support for PMEG2020EPASX 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

The MEGA Schottky series targets space- and efficiency-critical power conversion in portable and automotive systems, emphasizing low VF, robust transient immunity, and AOI-ready packaging for modern SMT lines.

FAQ

What is the maximum continuous forward current for PMEG2020EPASX at 80 °C ambient on FR4 PCB?

The datasheet specifies 2 A average forward current (IF(AV)) at Tamb ≤ 80 °C with δ = 0.5 square wave excitation on standard FR4 PCB. This rating assumes both anode pins are used and thermal vias are implemented under the cathode pad to maintain Tj ≤ 150 °C.

Does PMEG2020EPASX require special reflow profile considerations due to its DFN2020D-3 package?

Yes-the ultra-thin 0.65 mm height and exposed cathode pad demand precise reflow profiling. Peak temperature must not exceed 260 °C for ≤10 seconds, and ramp rates should stay within 1–3 °C/s to prevent solder voiding or delamination. The recommended footprint includes 0.35 mm wide side pads and a 1.1 mm × 1.1 mm central thermal land.

How does the guard ring improve reliability in PMEG2020EPASX compared to standard Schottky diodes?

The integrated guard ring mitigates edge electric field crowding, raising the reverse breakdown voltage margin by ≥15% and suppressing premature avalanche at the die perimeter. This extends operational lifetime under repetitive 20 V transients-validated through 1000-cycle HTRB testing at 125 °C and 20 V bias per AEC-Q101.

Can PMEG2020EPASX replace a standard SOD-123 Schottky in existing layouts without PCB modification?

No-its DFN2020D-3 (2.0 × 2.0 mm) footprint differs significantly from SOD-123 (3.5 × 1.6 mm). Direct replacement requires redesigning the land pattern to accommodate side-solderable terminals and the central thermal pad. Migration kits and layout guidelines are available from Nexperia's technical support portal.