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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Nexperia USA Inc. PMEG4005AEA/ZLX

Name: PMEG4005AEA/ZLX
Brand: Nexperia USA Inc.
SKU: PMEG4005AEA/ZLX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMEG4005AEA/ZLX

Manufacturer:: Nexperia USA Inc.

Category:: Single Diodes

Package:: -

Datasheet:: PMEG4005AEA/ZLX.pdf

Description:: DIODE SCHOTTKY 40V 500MA

Quantity:: RFQ Add To RFQ list

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Inventory:2,315

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Product details

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 (R_th(j-sp) = 210 K/W), surge capability (I_FSM = 10 A), and cathode-marked anode-cathode polarity alignment.

Technical Context

This Schottky diode uses a planar junction structure with an integrated guard ring to suppress edge breakdown under high electric field stress, enabling stable operation up to 150 °C junction temperature. Its low-barrier metal-semiconductor interface delivers sub-470 mV forward drop at rated current while maintaining reverse leakage below 100 µA at 40 V.

The device operates without minority-carrier storage delay, eliminating reverse recovery charge (Q_rr ≈ 0), making it suitable for high-frequency switching topologies. Thermal performance is defined relative to solder point (R_th(j-sp) = 210 K/W) and ambient (R_th(j-a) = 450 K/W) on standard FR4 PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_R	40 V maximum reverse voltage - sets upper limit for clamping and blocking applications
I_F	0.5 A continuous forward current - defines steady-state power delivery capacity
V_F	420–470 mV at I_F = 500 mA - enables >90% efficiency in 3.3 V or 5 V DC/DC output stages
I_R	30–100 µA at V_R = 40 V - ensures minimal standby power loss in battery-powered systems
C_d	43–50 pF at V_R = 1 V, f = 1 MHz - supports switching frequencies up to ~100 MHz with low capacitive loading
I_FSM	10 A non-repetitive peak forward current (8 ms square wave) - withstands inrush and fault transients
R_th(j-sp)	210 K/W - enables direct thermal coupling to PCB copper for compact thermal design

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 and cathode-indicating marking bar.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to load ground or negative rail; marked side of package; carries full forward current return path
2	Anode (A)	Connected to input source or positive rail; unmarked side; functions as current entry point during conduction

Key Features

Feature	Design Value
Guard ring integration	Prevents premature edge breakdown under high dv/dt or mechanical stress, improving long-term reliability in compact layouts
Ultra-low forward voltage	420 mV typ. at 500 mA - reduces conduction loss by >40% vs. standard silicon diodes in 3.3 V systems
High surge robustness	10 A I_FSM rating - sustains brief overcurrent events without degradation in USB or PoE-powered devices
Small-footprint SMD packaging	SOD323 outline - fits high-density PCBs where space is constrained, e.g., wearables and IoT sensors

Applications

Battery-Powered Load Switching

USB Port Polarity Protection

Use Scenario: Reverse-voltage protection for single-cell Li-ion battery inputs feeding microcontrollers or RF modules.

IC Role / Device Role / Timing Role: Passive polarity guard placed between battery terminal and system input rail.

Use Value: Prevents damage from misconnected batteries while adding <10 mW conduction loss at 300 mA load.

Use Scenario: Input protection for downstream USB 2.0 data/power ports against reversed cable insertion.

IC Role / Device Role / Timing Role: Series-blocking diode on VBUS line with cathode tied to host-side rail.

Use Value: Blocks reverse current flow without signal integrity impact due to zero Q_rr and <50 pF capacitance.

Low-Voltage DC/DC Output Rectification

Clamp Protection in Signal Lines

Use Scenario: Secondary-side rectification in synchronous-buck-derived 3.3 V or 1.8 V point-of-load converters.

IC Role / Device Role / Timing Role: Freewheeling path during low-side switch off-time in non-synchronous configurations.

Use Value: Enables >92% efficiency at 500 mA output with minimal thermal rise (<15 °C ΔT on 1 cm² cathode pad).

Use Scenario: ESD and transient clamp for analog sensor inputs (e.g., thermistors, ADC references) referenced to 3.3 V rails.

IC Role / Device Role / Timing Role: Low-capacitance shunt clamp between signal line and supply rail.

Use Value: Limits overshoot to <3.3 V + 0.47 V while adding only 45 pF loading - preserves bandwidth in kHz-range signals.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS40050MUTBG	Same 40 V / 0.5 A rating; VF = 450 mV typ. at 500 mA; R_th(j-a) = 475 K/W	Higher thermal resistance limits use in thermally constrained layouts	Select when footprint compatibility with SOD-323 is required but Nexperia sourcing is unavailable
Vishay SS14-E3/5AT	Higher 40 V rating but 1 A I_F; VF = 500 mV typ.; larger SMA package (4.5 mm × 2.7 mm)	Not suitable for space-constrained designs; better for higher-current, lower-frequency use	Choose when board layout allows larger footprint and system requires margin above 0.5 A continuous load

Compared with NSS40050MUTBG and SS14-E3/5AT, PMEG4005AEA offers the lowest VF and smallest footprint among 40 V Schottky rectifiers, delivering optimal efficiency per mm² in portable electronics - though its 0.5 A rating requires careful derating above 85 °C ambient.

Availability

PMEG4005AEA is available at Aetrix Electronics and suitable for battery-powered load switching, USB port polarity protection, and low-voltage DC/DC output rectification requiring stable component supply and consistent parametric performance across production batches.

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 essential semiconductors, delivering high-performance, reliable components for automotive, industrial, mobile, and computing markets.

The PMEG4005AEA belongs to Nexperia's Schottky rectifier product line, engineered specifically for ultra-low-loss, space-constrained power management in portable and energy-sensitive applications.

FAQ

What is the maximum junction temperature for continuous operation?

The PMEG4005AEA supports continuous operation up to 150 °C junction temperature, verified per IEC 60134 limiting values. Derating is required above 85 °C ambient when operating at full 0.5 A forward current, based on R_th(j-a) = 450 K/W and R_th(j-sp) = 210 K/W thermal models provided in the datasheet.

Does this diode have reverse recovery charge (Q_rr)?

No - as a Schottky barrier rectifier, PMEG4005AEA has no minority-carrier storage mechanism, resulting in negligible reverse recovery charge (Q_rr ≈ 0). This eliminates switching losses and EMI associated with recovery spikes, making it ideal for high-frequency (>1 MHz) DC/DC converters.

How is cathode identification implemented on the SOD323 package?

The cathode is identified by a visible marking bar on the top surface of the SOD323 package, aligned with Pin 1. The graphic symbol in the datasheet confirms Pin 1 = K (cathode) and Pin 2 = A (anode); orientation matches standard SOD323 land patterns in IPC-7351.

Can PMEG4005AEA be used in automotive applications?

No - PMEG4005AEA is not AEC-Q200 qualified and lacks automotive-grade qualification, testing, or guaranteed extended temperature support beyond commercial specifications. It is intended for industrial, consumer, and computing applications only, per Nexperia's legal disclaimers.

PMEG4005AEA/ZLX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product 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:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: -

Operating Temperature - Junction:: 150°C (Max)

PMEG4005AEA/ZLX FAQ

1.How can I place an order for PMEG4005AEA/ZLX through Aetrix?

Please submit a Request for Quotation (RFQ) for PMEG4005AEA/ZLX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PMEG4005AEA/ZLX reliable?

The price and inventory of PMEG4005AEA/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005AEA/ZLX is usually 5 days.

3.What payment methods are accepted for PMEG4005AEA/ZLX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005AEA/ZLX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMEG4005AEA/ZLX?

PMEG4005AEA/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMEG4005AEA/ZLX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PMEG4005AEA/ZLX?

For technical support, including PMEG4005AEA/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005AEA/ZLX requirements.

6.How does Aetrix verify that PMEG4005AEA/ZLX is sourced from the original manufacturer or authorized distributors?

All PMEG4005AEA/ZLX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PMEG4005AEA/ZLX meets industry standards.

7.What is the process for return or replacement of PMEG4005AEA/ZLX?

All PMEG4005AEA/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005AEA/ZLX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PMEG4005AEA/ZLX part is unused and in its original packaging.

Return procedure for PMEG4005AEA/ZLX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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