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Nexperia USA Inc. PMEG4005EGWX
- Part No.:
- PMEG4005EGWX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
PMEG4005EGWX.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:10,108
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Product details
Overview
PMEG4005EGWX from Nexperia is a 40 V, 0.5 A planar Schottky barrier rectifier in SOD123 package, featuring low forward voltage (420 mV typ. at 500 mA), low reverse leakage (30 µA typ. at 40 V), and integrated guard ring for stress protection-used in low-voltage DC/DC converters and reverse polarity protection circuits.
For engineers reviewing the PMEG4005EGWX datasheet, PMEG4005EGWX pinout, PMEG4005EGWX application, or PMEG4005EGWX equivalent, key selection criteria include forward voltage drop at 500 mA, thermal resistance to solder point (190 K/W), reverse leakage at full rated voltage, junction temperature limit (150 °C), and SOD123 footprint compatibility with high-density PCB layouts.
Technical Context
This MEGA Schottky rectifier uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its low VF stems from optimized metal–semiconductor interface design, enabling high conduction efficiency at low voltages.
It operates within a junction temperature range of −40 °C to 150 °C and is characterized using pulsed test conditions (tp ≤ 300 µs, δ ≤ 0.02) to avoid self-heating artifacts-ensuring accurate VF and IR measurements across temperature and bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Voltage | 420 mV typ. at 500 mA - enables <150 mW conduction loss in 5 V/0.5 A rail |
| Reverse Voltage | 40 V max - supports input rails up to 36 V nominal with 10 % margin |
| Reverse Leakage | 30 µA typ. at 40 V - minimizes standby power loss in battery-backed systems |
| Junction Temp Limit | 150 °C - allows operation in sealed enclosures with limited airflow |
| Thermal Resistance j-sp | 190 K/W - requires ≥1 cm² cathode copper pad for reliable 0.5 A continuous operation |
| Diode Capacitance | 43 pF typ. at 1 V - limits switching noise in >1 MHz DC/DC topologies |
Pinout & Package
Encapsulated in a compact SOD123 surface-mount plastic package (2.675 mm × 1.6 mm × 1.15 mm body), with cathode marked by a bar on the device top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to load or output rail; carries full forward current and dissipates majority of heat via cathode pad |
| 2 | Anode (A) | Connected to input or source rail; electrically referenced to system ground in common-cathode configurations |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge-related avalanche breakdown, improving surge robustness without derating VR |
| Low VF at 500 mA | 420 mV typ. reduces I²R losses by ~35 % vs. standard Schottky diodes in 5 V buck outputs |
| SOD123 footprint | Enables placement in space-constrained designs where larger packages (e.g., SOD323) are impractical |
| Pulsed IR characterization | 30 µA leakage measured under short-pulse conditions ensures accuracy for intermittent duty-cycle applications |
Applications
| DC/DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
Use Scenario: Used as synchronous rectifier replacement in 3.3 V/5 V buck converter outputs delivering up to 500 mA. IC Role / Device Role / Timing Role: Unidirectional current valve conducting during low-side switch off-time; no timing control required. Use Value: 420 mV VF reduces conduction loss to 210 mW, lowering thermal load vs. 550 mV alternatives. |
Use Scenario: Placed in series with VIN to block reverse supply connection in portable USB-powered devices. IC Role / Device Role / Timing Role: Passive protection element; conducts only during correct polarity insertion. Use Value: 30 µA IR at 40 V ensures <1.2 µW standby dissipation when reverse-biased. |
| Low-Voltage AC Adapter Input | Energy-Harvesting Power Path |
Use Scenario: Full-wave rectification stage in compact 12 V AC-to-DC wall adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Half-wave rectifier in bridge configuration; handles repetitive 50/60 Hz peaks. Use Value: 10 A non-repetitive surge rating withstands cold-start inrush without degradation. |
Use Scenario: Power path management between RF energy harvester (≤5 V, <100 mA) and supercapacitor storage. IC Role / Device Role / Timing Role: Loss-minimizing charge transfer diode; no active control or timing signal needed. Use Value: 220 mV VF at 10 mA enables >90 % transfer efficiency even at microamp-level harvest currents. |
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 but VF = 450 mV typ.; Rth(j-sp) = 220 K/W | Higher conduction loss and lower thermal performance reduce margin in thermally constrained layouts | Select if footprint compatibility with existing ON Semi designs is prioritized over minimal VF |
| Vishay SS14-E3/57T | 40 V/1 A rating; VF = 500 mV typ.; SOD-123 package; no guard ring | Higher current rating but higher VF and no edge protection increases risk of localized failure under ESD stress | Choose only when future current headroom (>0.5 A) is mandatory and layout includes external TVS |
Compared with NSS40050MUTBG and SS14-E3/57T, PMEG4005EGWX delivers the lowest VF and best thermal resistance among SOD123 Schottkys, making it optimal for space- and efficiency-critical 0.5 A rectification where long-term reliability under transient stress matters.
Availability
PMEG4005EGWX is available at Aetrix Electronics and suitable for low-voltage rectification, DC/DC converter output stages, and reverse polarity protection requiring stable component supply across industrial, consumer, and IoT production programs.
Supply support for PMEG4005EGWX 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 discrete and logic components, with leadership in Schottky diodes, MOSFETs, and ESD protection devices.
This device belongs to Nexperia's MEGA Schottky rectifier product line-engineered for ultra-low VF and enhanced ruggedness in compact SMD packages targeting power conversion and protection in space-constrained electronics.
FAQ
What is the maximum continuous forward current for PMEG4005EGWX at 120 °C ambient?
The datasheet specifies IF = 0.5 A maximum at Tsp ≤ 55 °C. At 120 °C ambient, derating applies: using Rth(j-a) = 310 K/W and Tj(max) = 150 °C, the allowable continuous current drops to approximately 180 mA to maintain junction temperature below 150 °C on standard FR4.
Does PMEG4005EGWX have automotive qualification?
No. Per Nexperia's revision history (v.3, Oct 2023), this part is explicitly designated as non-automotive. It lacks AEC-Q101 qualification and is not tested to automotive temperature or reliability standards. Automotive-grade equivalents carry "-Q" suffixes (e.g., PMEG4005EGW-Q).
How does the guard ring affect layout requirements?
The integrated guard ring eliminates need for extra keep-out zones around the die edge. Layout follows standard SOD123 footprint (Fig. 8), but the cathode pad must be ≥1 cm² tin-plated copper to achieve the specified Rth(j-sp) = 190 K/W and prevent thermal runaway under sustained 0.5 A load.
Can PMEG4005EGWX replace a standard PN-junction diode in a 5 V supply?
Yes-its 40 V VR rating and 420 mV VF provide superior efficiency vs. 1N400x or 1N5819 in low-voltage rectification. However, its higher reverse leakage (30 µA vs. <1 µA for PN diodes) makes it unsuitable where ultra-low standby current is critical, such as coin-cell backup circuits.
PMEG4005EGWX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- 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:
- SOD-123
- Operating Temperature - Junction:
- 150°C (Max)
PMEG4005EGWX FAQ
1.How can I place an order for PMEG4005EGWX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005EGWX 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 PMEG4005EGWX reliable?
The price and inventory of PMEG4005EGWX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005EGWX is usually 5 days.
3.What payment methods are accepted for PMEG4005EGWX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005EGWX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005EGWX?
PMEG4005EGWX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005EGWX 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 PMEG4005EGWX?
For technical support, including PMEG4005EGWX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005EGWX requirements.
6.How does Aetrix verify that PMEG4005EGWX is sourced from the original manufacturer or authorized distributors?
All PMEG4005EGWX 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 PMEG4005EGWX meets industry standards.
7.What is the process for return or replacement of PMEG4005EGWX?
All PMEG4005EGWX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005EGWX, 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 PMEG4005EGWX part is unused and in its original packaging.
Return procedure for PMEG4005EGWX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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