Nexperia USA Inc. PMEG2005EJ-QX

Overview

PMEG2005EJ-QX from Nexperia is a 20 V, 0.5 A planar MEGA Schottky barrier rectifier in SOD323F (SC-90) package, featuring 355–390 mV forward voltage at 500 mA, AEC-Q101 qualification, and integrated guard ring for stress protection-used in automotive reverse polarity protection and low-voltage DC-DC conversion.

For engineers reviewing the PMEG2005EJ-QX datasheet, PMEG2005EJ-QX pinout, PMEG2005EJ-QX application, or PMEG2005EJ-QX equivalent, key selection criteria include ultra-low VF at rated current, thermal resistance to solder point (150 K/W), junction temperature limit (150 °C), and AEC-Q101 compliance for under-hood power management.

Technical Context

This Schottky rectifier employs a planar MEGA structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its low VF stems from optimized metal-semiconductor interface and thin epitaxial layer design, enabling high efficiency in low-voltage (<5 V) power rails.

Thermal performance is defined by two distinct R_th values: 350 K/W (junction-to-ambient, standard FR4) and 150 K/W (junction-to-solder point), indicating strong dependence on PCB copper layout-especially cathode pad area-for sustained 0.5 A operation.

Key Specifications

Pinout & Package

Encapsulated in SOD323F (SC-90), a 1.7 mm × 1.25 mm × 0.7 mm surface-mount plastic package with flat leads and cathode-marking bar.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB521S-30T2R and SS12-AU, PMEG2005EJ-QX uniquely balances AEC-Q101 compliance, 0.5 A capability, and sub-400 mV VF in the smallest SC-90 footprint-making it optimal for space-constrained automotive modules where thermal budget and reliability are co-constrained.

Availability

PMEG2005EJ-QX is available at Aetrix Electronics and suitable for automotive reverse polarity protection, low-voltage DC-DC converter output rectification, and low-power IoT sensor node supply rails requiring stable component supply across production lifecycles.

Supply support for PMEG2005EJ-QX 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 delivering high-performance logic, analog, and discrete components with focus on efficiency, reliability, and miniaturization for automotive, industrial, and mobile markets.

PMEG2005EJ-QX belongs to Nexperia's MEGA Schottky rectifier product line-engineered specifically for ultra-low VF and AEC-Q101 compliance in space- and thermally constrained automotive power management circuits.

FAQ

What is the maximum continuous forward current for PMEG2005EJ-QX?

The maximum continuous forward current (IF(AV)) is 0.5 A, specified at solder point temperature ≤55 °C using a standard FR4 PCB footprint. Derating is required above this temperature-e.g., 0.35 A at T_sp = 85 °C-based on thermal resistance data and junction temperature limit of 150 °C.

Is PMEG2005EJ-QX suitable for reflow soldering?

Yes, PMEG2005EJ-QX is qualified for lead-free reflow soldering per J-STD-020. The recommended profile uses peak temperature ≤260 °C for ≤30 seconds, with preheat ramp rate ≤3 °C/s. Figure 5 in the datasheet provides the exact solder land pattern (0.6 mm × 0.5 mm pads, 0.95 mm pitch).

How does the guard ring improve reliability?

The integrated guard ring reduces electric field crowding at the silicon edge, suppressing premature avalanche and leakage under reverse bias transients. This extends device lifetime in automotive applications exposed to load dump (ISO 7637-2 Pulse 5a) and cold crank (−40 °C to +150 °C cycling).

Can PMEG2005EJ-QX replace a standard silicon diode in 5 V power rails?

Yes-its 355–390 mV VF at 500 mA delivers ~0.35 V lower forward drop than a typical 1N4148 (VF ≈ 720 mV), reducing conduction loss by >50 %. However, its 20 V VR rating requires verification against system overvoltage conditions, unlike higher-VR silicon alternatives.