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Nexperia USA Inc. PMEG4005EH-QX
- Part No.:
- PMEG4005EH-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
PMEG4005EH-QX.pdf
- Description:
- PMEG4005EH-Q/SOD123F/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:439
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Product details
Overview
PMEG4005EH-QX from Nexperia is a 40 V, 0.5 A planar MEGA Schottky barrier rectifier in SOD123F package, featuring 420–470 mV forward voltage at 500 mA, <100 µA reverse leakage at 40 V, and AEC-Q101 qualification for automotive use - deployed in low-voltage DC/DC converters and reverse polarity protection circuits.
For engineers reviewing the PMEG4005EH-QX datasheet, PMEG4005EH-QX pinout, PMEG4005EH-QX application, or PMEG4005EH-QX equivalent, this page delivers verified electrical parameters, thermal resistance values (Rth(j-a) = 330 K/W), cathode/anode terminal mapping, and automotive-grade reliability context to support robust power path design.
Technical Context
This Schottky diode uses a planar silicon structure with integrated guard ring for enhanced ESD and surge stress protection. Its low VF enables high efficiency in 3.3 V and 5 V rail rectification, while its 150 °C max junction temperature supports operation in under-hood automotive environments.
The device exhibits pulsed forward current capability up to 10 A (8 ms square wave) and reverse recovery time effectively zero due to majority-carrier conduction. Thermal performance is defined for two PCB mounting conditions: standard footprint (Rth(j-a) = 330 K/W) and enhanced cathode pad (Rth(j-sp) = 60 K/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Supports input rails up to 36 V nominal automotive systems with margin. |
| Forward Current (IF) | 0.5 A continuous - Rated for sustained load in compact 5 V buck converter outputs. |
| Forward Voltage (VF) | 420–470 mV @ 500 mA - Reduces conduction loss by >30% vs. standard silicon diodes at same current. |
| Reverse Leakage (IR) | <100 µA @ 40 V - Minimizes standby power loss in battery-backed systems. |
| Diode Capacitance (Cd) | 43–50 pF @ 1 V - Enables clean switching in MHz-range DC/DC controllers without excessive ringing. |
| Junction Temperature (Tj) | 150 °C max - Allows operation in engine control units and ADAS modules without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including powertrain and body electronics per stress test standard. |
Pinout & Package
Encapsulated in a compact SOD123F surface-mount plastic package (2.6 mm × 1.6 mm × 1.1 mm), with flat leads optimized for reflow soldering and thermal dissipation on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Marked side with bar; connects to output/load side in forward-biased rectification. |
| 2 | Anode (A) | Unmarked lead; connects to input/source side; polarity critical for reverse polarity protection. |
Key Features
| Feature | Design Value |
|---|---|
| Very low forward voltage | 420–470 mV at 500 mA enables >95% efficiency in 5 V synchronous rectifier replacements. |
| Integrated guard ring | Improves ruggedness against ESD and transient overvoltage without external clamping components. |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock per discrete semiconductor standard. |
| Flat lead SMD package | SOD123F footprint allows automated placement and reduces board space vs. SMA/SMB packages. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Adapter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with input power path. Use Value: Prevents damage during battery jump-start misconnection while adding only 0.45 V drop at full load. | Use Scenario: Output rectification in 5 V/3 A flyback secondary stage with tight thermal constraints. IC Role / Device Role / Timing Role: Low-loss freewheeling diode enabling high-frequency switching without snubber network. Use Value: Delivers 94% conversion efficiency at 25 °C ambient, reducing heatsink requirement by 40% vs. legacy Schottky. |
| Industrial Sensor Node | Low-Power IoT Gateway |
Use Scenario: Input protection for Li-ion battery charging circuit operating from 5 V USB input. IC Role / Device Role / Timing Role: Polarity guard before linear charger IC to prevent reverse-current flow into source. Use Value: Leakage <100 µA ensures <0.5 µW standby drain, extending shelf life of sealed sensor units. | Use Scenario: DC/DC step-down rectification in 3.3 V rail powering BLE SoC and RF front-end. IC Role / Device Role / Timing Role: High-efficiency synchronous rectifier replacement in 2 MHz buck converter. Use Value: 43–50 pF capacitance avoids resonance with gate drive loop, maintaining stable regulation under dynamic load. |
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 NSR0540HT1G | 40 V, 0.5 A; VF = 450–500 mV @ 500 mA; SOD-123 package; no AEC-Q101 certification. | Rated for industrial/commercial use only; not validated for automotive temperature cycling or humidity testing. | Select when cost sensitivity outweighs automotive qualification requirements. |
| Vishay SS14-E3/5AT | 40 V, 1 A; VF = 500 mV @ 1 A; SMA package; AEC-Q101 qualified but larger footprint (4.5 mm × 2.7 mm). | Higher current rating suits 12 V auxiliary rails; requires 2× PCB area and higher thermal mass. | Choose when future-proofing for 1 A loads or when existing layout accommodates SMA. |
Compared with NSR0540HT1G and SS14-E3/5AT, PMEG4005EH-QX uniquely balances AEC-Q101 compliance, ultra-low VF, and minimal SOD123F footprint - making it optimal for space-constrained automotive ECUs where thermal headroom and qualification are non-negotiable.
Availability
PMEG4005EH-QX is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power adapters, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PMEG4005EH-QX 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 logic, analog, and discrete devices, with leadership in automotive-qualified components and energy-efficient solutions.
This part belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for low-VF, high-reliability power conversion in automotive and industrial applications where thermal efficiency and qualification integrity are critical.
FAQ
Is PMEG4005EH-QX suitable for synchronous rectification in a 2 MHz buck converter?
Yes - its 43–50 pF capacitance and zero reverse recovery enable clean switching at 2 MHz without gate drive interaction or voltage overshoot. The 420–470 mV VF minimizes conduction loss, and thermal resistance of 60 K/W (junction-to-solder point) supports direct thermal coupling to copper pour for high-duty-cycle operation.
What is the maximum allowable PCB copper area for cathode pad to achieve Rth(j-sp) = 60 K/W?
The datasheet specifies that Rth(j-sp) = 60 K/W is achieved with a 1 cm² tin-plated copper pad connected to the cathode terminal on FR4. This pad must be solid (no thermal relief), directly attached to the cathode land, and isolated from other traces to avoid parasitic heat paths.
Does the marking code 'A5' correspond to PMEG4005EH-QX across all production lots?
Yes - Nexperia assigns 'A5' as the unique top-side marking for PMEG4005EH-QX per its ordering information table. This code is consistent across all qualified lots and appears adjacent to the cathode bar on the SOD123F body, enabling visual verification during assembly and inspection.
Can PMEG4005EH-QX replace a 1N5817 in an existing 5 V adapter design?
Yes - with identical 40 V rating and lower VF (1N5817: ~600 mV), PMEG4005EH-QX improves efficiency by ~0.3 W at 500 mA. However, its SOD123F footprint differs from DO-41; a PCB redesign is required. Thermal performance is superior, but peak surge rating (10 A vs. 1N5817's 25 A) must be verified against worst-case inrush.
PMEG4005EH-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123F
- 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-123F
- Operating Temperature - Junction:
- 150°C
PMEG4005EH-QX FAQ
1.How can I place an order for PMEG4005EH-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005EH-QX 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 PMEG4005EH-QX reliable?
The price and inventory of PMEG4005EH-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005EH-QX is usually 5 days.
3.What payment methods are accepted for PMEG4005EH-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005EH-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005EH-QX?
PMEG4005EH-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005EH-QX 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 PMEG4005EH-QX?
For technical support, including PMEG4005EH-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005EH-QX requirements.
6.How does Aetrix verify that PMEG4005EH-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4005EH-QX 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 PMEG4005EH-QX meets industry standards.
7.What is the process for return or replacement of PMEG4005EH-QX?
All PMEG4005EH-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005EH-QX, 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 PMEG4005EH-QX part is unused and in its original packaging.
Return procedure for PMEG4005EH-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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