Nexperia USA Inc. PMEG4005AEA,115

Overview

PMEG4005AEA from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, rated at 40 V reverse voltage and 0.5 A continuous forward current, featuring a typical forward voltage of 420 mV at 500 mA and reverse leakage of 30 µA at 40 V - deployed in low-voltage DC/DC converters and polarity protection circuits.

For engineers reviewing the PMEG4005AEA datasheet, PMEG4005AEA pinout, PMEG4005AEA application, or PMEG4005AEA equivalent, key selection criteria include ultra-low VF performance, SOD323 package thermal resistance (Rth(j-sp) = 210 K/W), surge current capability (IFSM = 10 A), and cathode-marked anode-cathode polarity alignment in space-constrained PCB layouts.

Technical Context

This Schottky diode uses a planar silicon structure with an integrated guard ring to enhance reliability under transient overvoltage stress, enabling stable operation up to 150 °C junction temperature. Its low-barrier metal-semiconductor junction delivers minimal conduction loss and fast switching with negligible reverse recovery charge.

The device operates without minority-carrier storage, eliminating reverse recovery time and associated switching losses - critical for high-frequency synchronous rectification and low-noise power rail clamping where di/dt-induced ringing must be minimized.

Key Specifications

Pinout & Package

Encapsulated in a SOD323 (SC-76) surface-mount plastic package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch, the PMEG4005AEA uses a two-terminal configuration where the cathode is marked by a bar on the package body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB520S-40T1G and NSR0540HT1G, the PMEG4005AEA offers the lowest VF in its class within the smallest SOD323 footprint, making it optimal for ultra-compact, thermally limited applications where every millivolt of conduction loss matters - especially in wearables and energy-harvesting systems.

Availability

PMEG4005AEA is available at Aetrix Electronics and suitable for USB power delivery protection, low-voltage DC/DC converter output rectification, and inverse polarity protection requiring stable component supply across production volumes.

Supply support for PMEG4005AEA 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

This device belongs to Nexperia's Schottky rectifier product line, engineered specifically for efficiency-critical, space-constrained power management in consumer, computing, and industrial electronics.

FAQ

What is the maximum junction temperature for continuous operation?

The PMEG4005AEA is rated for continuous operation up to 150 °C junction temperature, verified per IEC 60134 absolute maximum ratings. Derating is required above 85 °C ambient depending on PCB copper area and airflow; thermal resistance to solder point (Rth(j-sp) = 210 K/W) enables ~0.3 W dissipation on standard FR4 with 1 cm² cathode pad.

Does the SOD323 package support reflow soldering?

Yes - the SOD323 package is qualified for lead-free reflow soldering per JEDEC J-STD-020. Recommended profile uses peak temperature of 260 °C for ≤10 seconds, with preheat ramp rate ≤3 °C/s. Figure 5 in the datasheet provides exact solder land dimensions and paste stencil recommendations for reliable attachment.

How does the integrated guard ring improve reliability?

The guard ring mitigates edge breakdown under high electric field stress by redistributing voltage gradients at the silicon periphery. This increases robustness against ESD (IEC 61000-4-2 Level 3), line transients, and localized thermal runaway - extending lifetime in unregulated input environments like automotive accessory ports or industrial 24 V supplies.

Can PMEG4005AEA replace a standard silicon diode in existing designs?

Yes, provided reverse voltage and surge requirements are met - its 40 V VR and 10 A IFSM exceed most 1N4148/1N400x replacements. However, forward biasing must respect polarity (cathode marked), and layout must accommodate SOD323's smaller size and lower thermal mass; no derating needed for VF, which is significantly lower than silicon equivalents.