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

Nexperia USA Inc. PMEG4005AEA-QZ

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

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Part No.:: PMEG4005AEA-QZ

Manufacturer:: Nexperia USA Inc.

Category:: Single Diodes

Package:: SC-76, SOD-323

Datasheet:: PMEG4005AEA-QZ.pdf

Description:: PMEG4005AEA-Q/SOD323/SOD2

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PMEG4005AEA-Q from Nexperia is a planar Maximum Efficiency General Application (MEGA) Schottky barrier rectifier with integrated guard ring for stress protection, housed in an SOD323 (SC-76) package. It delivers 40 V reverse voltage rating, 420–470 mV forward voltage at 500 mA, ≤100 µA reverse leakage at 40 V, and supports 3.5 A repetitive peak forward current - optimized for low-voltage, high-efficiency DC/DC conversion in automotive power rails.

For engineers reviewing the PMEG4005AEA-Q datasheet, PMEG4005AEA-Q pinout, PMEG4005AEA-Q application, or PMEG4005AEA-Q equivalent, key selection criteria include ultra-low VF performance under 500 mA load, AEC-Q101 qualification, thermal resistance to solder point (90 K/W), and cathode-marked SOD323 footprint compatibility with space-constrained PCB layouts.

Technical Context

This Schottky rectifier uses a planar MEGA structure with integrated guard ring to suppress edge breakdown and improve surge robustness. Its low-barrier metal-semiconductor junction enables sub-470 mV VF at rated DC current while maintaining <100 µA IR at full 40 V VR.

Thermal design is constrained by R_th(j-sp) = 90 K/W to cathode solder point and R_th(j-a) = 450 K/W in free air. The device operates up to 150 °C junction temperature and is rated for 10 A non-repetitive surge (8 ms square wave), supporting transient-heavy automotive subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Voltage (V_R)	40 V - maximum blocking capability without avalanche or leakage escalation in 12 V/24 V automotive systems.
Forward Voltage (V_F)	420–470 mV at I_F = 500 mA - reduces conduction loss by >30% vs. standard Schottkys, critical for >90% efficiency DC/DC stages.
Reverse Current (I_R)	≤100 µA at V_R = 40 V - ensures minimal standby power drain in always-on vehicle modules.
Repetitive Peak Forward Current (I_FRM)	3.5 A (tp ≤ 1 ms, δ ≤ 0.5) - sustains pulsed loads from microcontroller wake-up events or sensor burst sampling.
Diode Capacitance (C_d)	43–50 pF at V_R = 1 V, f = 1 MHz - limits switching node ringing in high-frequency buck converters (≥1 MHz).
Junction-to-Solder-Point Thermal Resistance	90 K/W - enables direct thermal coupling to copper pour on FR4, supporting continuous 500 mA operation at T_amb ≤ 85 °C.

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. Cathode identified by marking bar on package top.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Output terminal for rectified DC; connects to ground or return path; marked side of package.
2	Anode (A)	Input terminal for AC or switched input; ties to source-side of buck converter or battery positive in polarity protection.

Key Features

Feature	Design Value
Very low forward voltage	420–470 mV @ 500 mA - cuts conduction loss in half versus conventional Schottkys, directly improving light-load efficiency.
AEC-Q101 qualification	Qualified per Stress Test Qualification for Discrete Semiconductors - validated for automotive under-hood and infotainment applications.
Integrated guard ring	Planar edge termination structure - prevents premature breakdown at high dV/dt, enabling stable operation in noisy 12 V rail environments.
Small SMD footprint	SOD323 package (1.7 × 1.25 mm) - fits dense power management IC layouts where board area is constrained by MCU or CAN transceiver placement.

Applications

Automotive Body Control Module

USB-C Power Delivery Clamp

Use Scenario: Reverse polarity protection for 12 V supply input to BCM microcontroller and LIN transceivers.

IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery jump-start misconnection.

Use Value: 40 V VR rating withstands load-dump transients; 470 mV VF adds <0.5 °C junction rise at 500 mA, avoiding thermal derating.

Use Scenario: Voltage clamping between VBUS and GND in USB-C receptacle circuits to suppress ESD and overshoot.

IC Role / Device Role / Timing Role: Fast-turn-on clamp diode shunting >20 V spikes within nanoseconds.

Use Value: 50 pF capacitance minimizes signal distortion on CC lines; 10 A IFSM handles 8/20 µs ESD pulses without degradation.

Low-Power IoT Sensor Node

High-Frequency Buck Converter Output Rectifier

Use Scenario: Low-voltage rectification of energy-harvested AC from piezoelectric or RF sources (<5 V, <10 mA).

IC Role / Device Role / Timing Role: AC-to-DC conversion stage feeding supercapacitor charging circuit.

Use Value: 95 mV VF at 0.1 mA enables usable output even below 0.3 V input amplitude, extending harvestable energy range.

Use Scenario: Synchronous rectifier replacement in 2 MHz, 3.3 V output buck converter powering FPGA I/O banks.

IC Role / Device Role / Timing Role: Freewheeling path during high-side FET off-time.

Use Value: 43 pF C_d reduces switching loss by limiting resonant tank energy; 3.5 A I_FRM supports 2× peak current margin at 1.5 A nominal load.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
RB520S-40T1G	VF = 450–520 mV @ 500 mA; VR = 40 V; SOD-523 package (1.2 × 0.8 mm)	Smaller footprint but higher VF increases conduction loss by ~8%; lower I_FRM (2 A) limits surge handling.	Prefer when board area is more critical than efficiency, and surge events are infrequent.
SS14-E3/5AT	VF = 500 mV @ 1 A; VR = 40 V; SMA package (4.5 × 2.7 mm); no AEC-Q101 qualification	Larger thermal mass improves steady-state dissipation but lacks automotive qualification and has 2× larger footprint.	Select only for industrial/non-automotive use where qualification is not required and layout space permits.

Compared with RB520S-40T1G and SS14-E3/5AT, PMEG4005AEA-Q uniquely balances ultra-low VF, AEC-Q101 compliance, and minimal SOD323 footprint - making it optimal for space- and efficiency-constrained automotive power nodes where reliability under transient stress is mandatory.

Availability

PMEG4005AEA-Q is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery clamps, low-power IoT sensor nodes, and high-frequency buck converter output rectifiers requiring stable component supply across production lifecycles.

Supply support for PMEG4005AEA-Q 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PMEG4005AEA-Q belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for ultra-low VF performance and AEC-Q101-compliant operation in automotive power management and protection circuits.

FAQ

What is the maximum continuous forward current rating for PMEG4005AEA-Q?

The absolute maximum continuous forward current (I_F) is 0.5 A at T_amb = 25 °C with adequate PCB copper thermal relief. Derating is required above 25 °C ambient; at 85 °C, maximum I_F drops to approximately 0.35 A based on R_th(j-a) = 450 K/W and T_j(max) = 150 °C. This rating assumes single-sided FR4 with standard footprint per datasheet Figure 5.

Does PMEG4005AEA-Q support reflow soldering, and what profile is recommended?

Yes - PMEG4005AEA-Q is qualified for lead-free reflow soldering per J-STD-020. Nexperia specifies a peak temperature of 260 °C for ≤30 seconds, with ramp-up rate ≤3 °C/s and ramp-down rate ≤6 °C/s. The recommended footprint uses 0.5 mm × 0.6 mm solder lands with 0.6 mm solder resist opening per pad, as shown in Figure 5 of the datasheet.

How does the integrated guard ring affect reliability in automotive environments?

The integrated guard ring provides planar edge termination that suppresses electric field crowding at the die periphery. In automotive applications, this prevents localized avalanche and hot-carrier injection during load-dump transients (ISO 7637-2 Pulse 5a), extending device lifetime beyond 15 years under typical under-hood thermal cycling (−40 °C to +125 °C).

Can PMEG4005AEA-Q be used as a replacement for standard silicon diodes in 5 V rail clamping?

Yes - its 40 V VR rating and fast recovery (inherent to Schottky structure) make it suitable for 5 V rail clamping. However, unlike silicon diodes, it exhibits higher reverse leakage (up to 100 µA at 40 V), so it must not be placed in series with high-impedance nodes where leakage could cause voltage offset. For 5 V clamping, it is best applied between rail and ground with low-impedance drive.

PMEG4005AEA-QZ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-76, SOD-323

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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

Operating Temperature - Junction:: 150°C

PMEG4005AEA-QZ FAQ

1.How can I place an order for PMEG4005AEA-QZ through Aetrix?

Please submit a Request for Quotation (RFQ) for PMEG4005AEA-QZ 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-QZ reliable?

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

3.What payment methods are accepted for PMEG4005AEA-QZ?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMEG4005AEA-QZ?

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

Once your PMEG4005AEA-QZ 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-QZ?

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

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

All PMEG4005AEA-QZ 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-QZ meets industry standards.

7.What is the process for return or replacement of PMEG4005AEA-QZ?

All PMEG4005AEA-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005AEA-QZ, 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-QZ part is unused and in its original packaging.

Return procedure for PMEG4005AEA-QZ:

1.Submit a request within 90 days.

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

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