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Ⅰ.Overview of product

PMEG4005AEA-QX is a surface-mount Schottky single rectifier produced by Nexperia USA Inc.,optimized for high-frequency,low-loss power circuits. It delivers efficient rectification in compact electronic systems with demanding efficiency requirements.

Ⅱ.Core parameter

Category:Discrete Semiconductor Products,Diodes,Rectifiers,Single Diodes

Mfr:Nexperia USA Inc.

Packaging:Tape & Reel

Part Status:Active

Technology:Schottky

Voltage - DC Reverse (Vr) (Max):40 V

Current - Average Rectified (Io):500mA

Voltage - Forward (Vf) (Max) @ If:470 mV @ 500 mA

Speed:Zero Recovery Time > 500mA (Io)

Reverse Recovery Time (trr):0 ns

Current - Reverse Leakage @ Vr:100 µA @ 40 V

Capacitance @ Vr, F:43pF @ 1V, 1MHz

Mounting Type:Surface Mount

Package / Case:SC-76, SOD-323

Operating Temperature - Junction:150°C

Ⅲ.Main characteristics

Zero Recovery:Featuring a 0 ns reverse recovery time, this diode supports extremely high-frequency switching operations and effectively reduces switching losses in high-speed circuits.It also improves overall system efficiency and reduces electromagnetic interference during operation.

Low Forward VF:With a maximum forward voltage of only 470 mV at 500 mA, it significantly lowers conduction power loss.This helps extend battery life and improve thermal performance in portable and low-power devices.

Schottky Structure:Adopting Schottky barrier technology, it provides fast switching response and stable rectifying performance.It is well-suited for high-frequency power conversion and small‑signal processing applications.

Miniature Package:Housed in the tiny SOD-323 (SC-76) surface-mount package,it saves valuable PCB space and supports high-density circuit design.This makes it ideal for slim and compact electronic products.

Low Reverse Leakage:The reverse leakage current is strictly controlled at 100 µA at 40 V, ensuring low standby power consumption and reliable reverse blocking capability.It helps improve energy efficiency in battery-powered equipment.

Moderate Capacitance:With a capacitance of 43 pF at 1 V and 1 MHz, it balances high‑frequency performance and signal stability. It supports reliable operation in both switching power supplies and RF-related circuits.

Ⅳ.Application field

DC-DC Conversion:Used as a freewheeling or rectifier diode in 5V to 3.3V step-down DC-DC converters for smartwatches and fitness bands.Its zero recovery characteristic greatly improves the efficiency and stability of the power supply module.

Battery Protection:Applied in reverse polarity protection circuits for wireless Bluetooth earphone charging cases.Its low forward voltage drop minimizes energy loss while effectively protecting the circuit from damage caused by reverse connection.

Automotive LED Circuits:Used in low-power LED indicator circuits for car steering wheel buttons and dashboard lights.It provides stable rectification and ensures bright and consistent lighting output.

IoT Sensor Power:Serves as a rectifier and clamp diode in power supply circuits for indoor temperature and humidity IoT sensors. It stabilizes the input voltage and protects sensitive sensor chips from voltage spikes.

Portable Power Banks:Used in high-frequency output switching circuits of small portable power banks. Its high switching speed and low loss help improve charging efficiency and reduce heat generation.

Ⅴ.Summary

PMEG4005AEA-QX is a high-efficiency Schottky rectifier featuring zero reverse recovery, ultra‑low forward voltage drop and a compact package.It is an excellent choice for miniaturized,high-efficiency power circuits in consumer electronics, automotive auxiliary devices and IoT sensor systems.