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Nexperia USA Inc. PMEG4020EXEX
- Part No.:
- PMEG4020EXEX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
PMEG4020EXEX.pdf
- Description:
- PMEG4020EXE/SOD123HP/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
PMEG4020EXE from Nexperia is a planar Schottky barrier rectifier in CFP3-HP (SOD123HP) package, rated for 40 V reverse voltage and 2 A average forward current, with typical forward voltage of 500 mV at 2 A and 25 °C. It serves as a low-loss power rectifier in high-efficiency DC-DC converters and SMPS secondary-side outputs.
For engineers reviewing the PMEG4020EXE datasheet, PMEG4020EXE pinout, PMEG4020EXE application, or PMEG4020EXE equivalent, key selection criteria include forward voltage drop at operating current, thermal resistance to solder point (6 K/W), reverse leakage at 125 °C (6–25 mA), surge robustness (50 A IFSM), and SOD123HP footprint compatibility with high-density PCB layouts.
Technical Context
This Schottky diode uses a planar metal–semiconductor junction optimized for low VF and fast recovery-exhibiting trr ≤ 4 ns (step recovery) and Qrr ≤ 2.5 nC. Its clip-bond construction enables high power capability and low thermal resistance (Rth(j-sp) = 6 K/W) via direct cathode tab thermal path.
The device operates across –55 °C to 175 °C junction temperature, with reverse breakdown ≥40 V and low capacitance (40 pF at VR = 10 V, 1 MHz). Its low IR at 125 °C supports stable performance in thermally constrained environments like compact power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 40 V - Maximum blocking voltage before breakdown; defines usable input/output voltage range in buck or flyback secondaries. |
| IF(AV) (Avg. Forward Current) | 2 A - Continuous DC current handling under δ = 0.5, 20 kHz square wave, Tsp ≤ 168 °C; suitable for medium-power DC-DC stages. |
| VF @ 2 A, 25 °C | 500–570 mV - Low conduction loss enabling >95% efficiency in 3.3 V/5 V output rails. |
| IR @ 40 V, 125 °C | 6–25 mA - Controlled leakage ensures minimal standby power loss in always-on systems. |
| Rth(j-sp) | 6 K/W - Thermal resistance from junction to cathode solder point; enables direct heat transfer to large copper pour or thermal pad. |
| IFSM (Surge Current) | 50 A - Withstands 8.3 ms half-sine surges; protects against inrush and transient overloads in adapter inputs. |
| Cd @ 10 V | 40 pF - Low junction capacitance minimizes switching losses and EMI in high-frequency (>500 kHz) SMPS designs. |
Pinout & Package
Encapsulated in CFP3-HP (SOD123HP) surface-mount plastic package: 2.80 mm × 1.80 mm × 0.90 mm body with exposed cathode thermal pad. Dimensions comply with JEDEC MO-229 standard; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Main current exit terminal; electrically and thermally connected to exposed copper pad for low-inductance, low-resistance PCB heat sinking. |
| 2 (A) | Anode | Current entry terminal; connects to switching node or transformer secondary; minimal parasitic inductance due to short internal bond path. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 500 mV typ. @ 2 A, 25 °C - Reduces conduction loss by ~30% vs. comparable 45 V Schottkys, directly improving light-load efficiency. |
| Clip-bond thermal construction | Rth(j-sp) = 6 K/W - Enables 1.3 W power dissipation with only 1 cm² cathode pad, eliminating need for external heatsinks in space-constrained modules. |
| High surge current robustness | 50 A IFSM (8.3 ms) - Survives repeated cold-start inrush events without degradation, extending reliability in unregulated AC/DC front-ends. |
| Low reverse leakage at high temp | 25 mA max @ 40 V, 125 °C - Maintains stable bias in hot-running industrial power supplies where ambient exceeds 85 °C. |
| Fast recovery performance | trr ≤ 4 ns (step), Qrr ≤ 2.5 nC - Minimizes reverse recovery loss and ringing in synchronous rectifier replacement applications up to 1 MHz. |
Applications
| Server VRM Output Rectification | USB-C PD Adapter Secondary |
|---|---|
|
Use Scenario: 12 V → 3.3 V/5 V point-of-load conversion in server motherboard VRMs using multiphase buck topology. IC Role / Device Role: Secondary-side synchronous rectifier replacement; conducts during low-side FET on-time to minimize conduction loss. Use Value: 500 mV VF reduces output-stage power loss by 0.5 W per phase vs. silicon diodes, lowering thermal density in dense CPU VRMs. |
Use Scenario: 20 V input to 5 V/9 V/15 V output in compact USB-C PD wall adapters with 30–65 W output. IC Role / Device Role: Output rectifier in flyback or active-clamp forward converters operating at 100–300 kHz. Use Value: 6 K/W Rth(j-sp) allows full 2 A load with <10 °C junction rise on standard FR4, enabling smaller heatsink-free adapter form factors. |
| Industrial PLC Power Supply | Automotive Infotainment DC-DC |
|
Use Scenario: 24 V DC input to isolated 5 V/3.3 V logic rails in programmable logic controller (PLC) backplane power modules. IC Role / Device Role: Low-voltage rectifier in isolated auxiliary supply, operating continuously at 65 °C ambient. Use Value: Stable 6–25 mA IR at 125 °C junction ensures predictable standby current in sealed enclosures with limited airflow. |
Use Scenario: 12 V battery-fed 5 V/3.3 V DC-DC for infotainment head units requiring AEC-Q200 alignment (non-automotive qualified but widely used). IC Role / Device Role: Reverse polarity protection diode and main output rectifier in dual-function power stage. Use Value: 40 V VR margin accommodates load-dump transients up to 35 V, while SOD123HP footprint fits tight automotive PCB routing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EQH04HM3 | Same 40 V/2 A rating; VF = 520 mV typ., Rth(j-a) = 125 K/W (vs. 115 K/W for PMEG4020EXE); SOD-123 package (not CFP3-HP). | No exposed thermal pad; higher Rth(j-a) limits power handling in confined layouts without forced air. | Prefer when legacy SOD-123 footprint is fixed and thermal demand is moderate (<1 W). |
| ON Semiconductor NSR2040HT1G | 40 V/2 A; VF = 490 mV typ.; Rth(j-sp) not specified; SOD-123 package; no clip-bond construction. | Lacks dedicated thermal pad; relies on PCB copper for heat spreading; less robust under repetitive surge stress. | Choose for cost-sensitive consumer power supplies where peak surge immunity is non-critical. |
Compared with VS-2EQH04HM3 and NSR2040HT1G, PMEG4020EXE delivers superior thermal performance via its clip-bonded cathode pad and lower Rth(j-sp), enabling higher sustained power in miniaturized industrial and computing power supplies without derating.
Availability
PMEG4020EXE is available at Aetrix Electronics and suitable for server VRMs, USB-C PD adapters, industrial PLC power supplies, and automotive infotainment DC-DC converters requiring stable component supply and consistent thermal behavior across temperature extremes.
Supply support for PMEG4020EXE 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in Schottky diodes, MOSFETs, and ESD protection components.
PMEG4020EXE belongs to Nexperia's CFP3-HP Schottky rectifier product line, engineered for high-efficiency, thermally demanding power conversion in space-constrained applications such as computing, communications, and industrial power supplies.
FAQ
What is the maximum allowable solder point temperature for PMEG4020EXE during reflow?
The device is qualified for standard lead-free reflow profiles with peak temperature up to 260 °C. The absolute maximum solder point temperature (Tsp) is 168 °C for continuous operation at 2 A average current, as defined in the limiting values table. Exceeding this during sustained operation risks accelerated degradation of the Schottky junction.
Can PMEG4020EXE be used as a reverse polarity protection diode in 24 V systems?
Yes - with 40 V reverse voltage rating and 2 A continuous current, it provides robust reverse polarity protection for 24 V nominal systems, including those subject to ISO 7637-2 load dump transients up to 35 V. Its low VF minimizes voltage drop and power loss in the forward path.
How does the CFP3-HP package improve thermal performance over standard SOD-123?
The CFP3-HP (SOD123HP) package features an exposed cathode thermal pad that reduces Rth(j-sp) to 6 K/W - nearly 2× better than typical SOD-123 packages (~11–15 K/W). This enables direct thermal coupling to PCB copper, allowing higher power dissipation without external heatsinks or airflow.
Is PMEG4020EXE suitable for synchronous rectifier replacement in 1 MHz DC-DC converters?
Yes - its trr ≤ 4 ns (step recovery) and Qrr ≤ 2.5 nC enable clean turn-off with minimal reverse recovery loss at switching frequencies up to 1 MHz. However, gate drive timing must account for its slightly slower ramp recovery (trr ≤ 6 ns) to avoid shoot-through in actively controlled synchronous configurations.
PMEG4020EXEX 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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 6 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 40 V
- Capacitance @ Vr, F:
- 115pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HP
- Operating Temperature - Junction:
- 175°C
PMEG4020EXEX FAQ
1.How can I place an order for PMEG4020EXEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4020EXEX 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 PMEG4020EXEX reliable?
The price and inventory of PMEG4020EXEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4020EXEX is usually 5 days.
3.What payment methods are accepted for PMEG4020EXEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4020EXEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4020EXEX?
PMEG4020EXEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4020EXEX 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 PMEG4020EXEX?
For technical support, including PMEG4020EXEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4020EXEX requirements.
6.How does Aetrix verify that PMEG4020EXEX is sourced from the original manufacturer or authorized distributors?
All PMEG4020EXEX 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 PMEG4020EXEX meets industry standards.
7.What is the process for return or replacement of PMEG4020EXEX?
All PMEG4020EXEX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4020EXEX, 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 PMEG4020EXEX part is unused and in its original packaging.
Return procedure for PMEG4020EXEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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