Nexperia USA Inc. PMEG4005CEAX

Overview

PMEG4005CEAX from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, designed for low-voltage, high-efficiency DC-to-DC conversion and reverse polarity protection. It delivers 0.5 A average forward current, 40 V reverse voltage rating, 550 mV typical forward voltage at 500 mA, 1.5 µA typical reverse leakage at 40 V/25 °C, and operates up to 150 °C junction temperature in SOD323 package.

For engineers reviewing the PMEG4005CEAX datasheet, PMEG4005CEAX pinout, PMEG4005CEAX application, or PMEG4005CEAX equivalent, key selection criteria include low VF performance under pulsed 500 mA loads, thermal resistance to solder point (225 K/W), reverse recovery time (1.8 ns), diode capacitance (13.5 pF at 4 V), and compatibility with FR4 PCB layouts using standard or enhanced cathode pad footprints.

Technical Context

This Schottky rectifier uses a planar die structure with an integrated guard ring to improve ruggedness against voltage transients and electrostatic stress. Its low forward voltage stems from optimized metal-semiconductor interface design, enabling high efficiency in space-constrained power stages.

The device exhibits ultrafast reverse recovery (trr = 1.8 ns) and low junction-to-solder-point thermal resistance (225 K/W with 1 cm² cathode pad), supporting stable operation in thermally demanding SMPS flyback and synchronous rectifier topologies where thermal management and switching loss are critical.

Key Specifications

Pinout & Package

Encapsulated in SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, single-sided copper FR4 mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB521S-40T1G and NSR0540HT1G, PMEG4005CEAX offers the lowest VF in SOD323 while maintaining tight thermal resistance control-ideal for miniaturized, high-efficiency 0.5 A power paths where board area and thermal budget are jointly constrained.

Availability

PMEG4005CEAX is available at Aetrix Electronics and suitable for USB Power Delivery adapters, industrial sensor nodes, and IoT edge gateways requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for PMEG4005CEAX 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 leading global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization.

This part belongs to Nexperia's low-VF Schottky rectifier product line, engineered specifically for high-frequency, space-constrained power conversion in consumer, computing, and industrial applications where thermal and electrical efficiency are prioritized.

FAQ

What is the maximum allowable solder point temperature for PMEG4005CEAX during reflow?

The device supports standard Pb-free reflow profiles with peak temperature up to 260 °C for ≤30 seconds, consistent with IPC/JEDEC J-STD-020. Its absolute maximum solder point temperature is not specified separately, but thermal design must ensure Tsp remains ≤135 °C during steady-state operation to maintain 0.5 A IF(AV) rating per datasheet Fig. 10.

Can PMEG4005CEAX be used in automotive applications?

No-PMEG4005CEAX is explicitly designated as non-automotive qualified per its revision history (v.2, Oct 2025). It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia recommends the PMEG4005CEA-Q variant, which undergoes full automotive qualification and testing.

How does the guard ring affect surge robustness?

The integrated guard ring mitigates edge breakdown under transient overvoltage conditions by distributing electric field stress away from the active junction periphery. This enables the device to withstand repetitive 40 V reverse pulses without degradation, improving reliability in systems exposed to load-dump or inductive kick events common in industrial power supplies.

Is the 1.5 µA reverse current guaranteed over temperature?

No-the 1.5 µA value is typical at 25 °C; IR rises to 1 mA typical at 125 °C (per Table 4). Designers must verify leakage impact at max operating temperature: at 125 °C and 40 V, leakage contributes ~0.04 W dissipation, requiring thermal analysis to avoid local heating in sealed enclosures.