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Nexperia USA Inc. PMEG4020CERX
- Part No.:
- PMEG4020CERX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
PMEG4020CERX.pdf
- Description:
- BIPOLAR DISCRETES
- Quantity:
- Payment:
- Shipping:
Inventory:24
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Product details
Overview
PMEG4020CERX from Nexperia is a planar Schottky barrier rectifier in CFP3 (SOD123W) surface-mount package, designed for low-voltage, high-efficiency DC-to-DC conversion and reverse polarity protection. It delivers 2 A average forward current at 40 V reverse voltage, with typical forward voltage of 500 mV at 2 A and 25 °C, enabling reduced conduction losses in compact power supplies.
For engineers reviewing the PMEG4020CERX datasheet, PMEG4020CERX pinout, PMEG4020CERX application, or PMEG4020CERX equivalent, key selection criteria include its low VF, thermal performance on FR4 PCBs, clip-bonded power capability, and SOD123W footprint compatibility with space-constrained SMPS designs.
Technical Context
This Schottky rectifier uses a planar metal-semiconductor junction to achieve fast switching with negligible reverse recovery charge (Qrr = 2.1 nC) and ultra-low trr (4.5 ns step recovery). Its clip-bond construction lowers thermal resistance to 18 K/W (junction-to-solder-point), supporting sustained 2 A operation under δ = 0.5 square-wave conditions with Tsp ≤ 166 °C.
The device exhibits temperature-stable forward voltage - VF rises only ~70 mV from −40 °C to 125 °C at 2 A - and reverse leakage remains below 25 mA at 125 °C/40 V, making it suitable for thermally demanding industrial and automotive-adjacent applications where thermal runaway must be mitigated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum blocking capability without breakdown; defines usable input range in buck converters and reverse protection circuits. |
| Average Forward Current (IF(AV)) | 2 A - Sustained DC-equivalent current rating at δ = 0.5, 20 kHz, with solder point ≤166 °C; supports continuous 5–12 V output stages. |
| Forward Voltage (VF) | 500 mV typ. @ 2 A, 25 °C - Low conduction loss enables >95% efficiency in low-VOUT SMPS; reduces heat sink requirements. |
| Reverse Recovery Charge (Qrr) | 2.1 nC - Minimizes switching loss and EMI in high-frequency converters; eliminates need for snubbers in most 500 kHz–1 MHz designs. |
| Junction-to-Solder-Point Rth | 18 K/W - Enables direct thermal coupling to PCB copper; allows 1.15 W dissipation with 1 cm² cathode pad at Tamb ≤25 °C. |
| Reverse Leakage (IR) | 25 mA max @ 40 V, 125 °C - Predictable leakage behavior supports stable biasing in hot environments without thermal runaway risk. |
Pinout & Package
Encapsulated in CFP3 (SOD123W) plastic SMD package: 2.6 mm × 1.7 mm × 1.0 mm body, flat leads, single-sided copper mounting footprint. Cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to output rail or ground reference; carries full forward current and anchors thermal path to PCB copper pad. |
| 2 (A) | Anode | Connected to input or switching node; exposed metal area minimizes inductance in high-dI/dt paths. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 500 mV typ. @ 2 A ensures <1 W conduction loss at full load, reducing thermal stress in sealed enclosures. |
| Clip-bond package | Enables 2.8 A peak forward current (IF) and 50 A non-repetitive surge (IFSM), supporting robust start-up and transient handling. |
| SOD123W footprint | Standardized 2.8 mm × 1.7 mm outline with 1.1 mm pad width - compatible with automated placement and reflow profiles per J-STD-020. |
| Thermal resistance control | Rth(j-sp) = 18 K/W allows precise thermal modeling when using 1 cm² cathode copper; simplifies thermal derating for industrial ambient ranges. |
Applications
| DC-DC Buck Converter Output Rectification | Reverse Polarity Protection Circuit |
|---|---|
Use Scenario: Secondary-side rectification in 3–12 V, 1–2 A synchronous or asynchronous buck converters. IC Role / Device Role / Timing Role: Unidirectional current valve replacing MOSFET body diode or discrete P-channel FET; conducts during low-side switch off-time. Use Value: 500 mV VF cuts conduction loss by >40% vs. standard silicon diodes, improving light-load efficiency and easing thermal management. |
Use Scenario: Input protection for USB-powered peripherals, battery-backed sensors, and field-deployed IoT nodes. IC Role / Device Role / Timing Role: Series-blocking element placed between power input and system rail; blocks reverse current during incorrect connector insertion. Use Value: 2 A rating and 40 V VR support 5–24 V systems; low VF avoids voltage drop that could trigger brown-out resets in low-margin supplies. |
| High-Frequency SMPS Auxiliary Supply | Low-Power AC-DC Adapter Output Stage |
Use Scenario: +5 V/3.3 V auxiliary winding rectification in flyback or forward converters operating at ≥500 kHz. IC Role / Device Role / Timing Role: Fast-recovery rectifier handling high dI/dt edges; minimal Qrr prevents shoot-through and ringing. Use Value: 4.5 ns trr and 2.1 nC Qrr suppress EMI generation and eliminate need for RC snubbers, saving board space and BOM cost. |
Use Scenario: Output rectification in compact wall adapters delivering ≤2 A at 5–12 V with no heatsink. IC Role / Device Role / Timing Role: Primary output diode conducting continuous forward current; thermally coupled to PCB ground plane. Use Value: 1.15 W power dissipation capability with standard FR4 footprint enables fanless operation up to 50 °C ambient. |
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 NSS40201MUTBG | Same 40 V/2 A rating but VF = 550 mV typ.; TO-277 (SOD128) package, 3.5 mm × 1.7 mm - larger footprint, higher Rth(j-a). | Less suitable for ultra-thin designs; requires larger PCB area and offers lower thermal performance on standard FR4. | Select when legacy TO-277 footprint compatibility is required or when slightly higher VF is acceptable for cost optimization. |
| Vishay VSKY240A-M3/84A | 40 V/2 A, VF = 490 mV typ., but rated only to 150 °C junction; no published Rth(j-sp); SOD123W package confirmed. | Limited high-temperature reliability data; lacks thermal resistance specs needed for precise derating above 100 °C ambient. | Prefer for commercial-grade applications below 85 °C ambient; avoid in extended-temperature industrial deployments. |
Compared with NSS40201MUTBG and VSKY240A-M3/84A, PMEG4020CERX provides superior thermal coupling (18 K/W j-sp), verified 175 °C junction rating, and lowest VF among SOD123W-packaged 2 A Schottkys - making it optimal for thermally constrained, high-reliability power rails.
Availability
PMEG4020CERX is available at Aetrix Electronics and suitable for DC-DC buck converters, reverse polarity protection circuits, high-frequency SMPS auxiliary supplies, and low-power AC-DC adapter output stages requiring stable component supply and consistent SOD123W footprint compliance.
Supply support for PMEG4020CERX 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 essential semiconductors - including logic, discretes, MOSFETs, and analog devices - serving automotive, industrial, mobile, and computing markets.
The PMEG4020CERX belongs to Nexperia's CFP3 Schottky rectifier product line, engineered specifically for space- and thermally-constrained power conversion in consumer, industrial, and networking equipment where low VF and robust surge capability are critical.
FAQ
What is the maximum allowable solder point temperature for continuous operation?
The datasheet specifies Tsp ≤ 166 °C for IF(AV) = 2 A at δ = 0.5, 20 kHz. Exceeding this temperature causes irreversible derating of forward current capability. For DC operation (δ = 1), the limit drops to 163 °C. Thermal design must ensure the cathode solder joint stays within these bounds using adequate copper area and airflow.
Does PMEG4020CERX have automotive qualification?
No. The PMEG4020CERX is not AEC-Q101 qualified and is explicitly designated as a non-automotive qualified product per Nexperia's legal disclaimers. It lacks automotive-grade testing, screening, and failure rate documentation; use in automotive applications is at the customer's sole risk and requires full validation.
How does the clip-bond construction improve performance over wire-bonded Schottkys?
Clip bonding replaces gold wires with a copper strap connecting the die directly to the lead frame, reducing parasitic inductance and resistance. This yields lower VF, higher IFSM (50 A), and improved thermal transfer - evidenced by Rth(j-sp) = 18 K/W versus typical 35–50 K/W for wire-bonded SOD123W devices.
Can PMEG4020CERX replace a standard 1N5819 in existing designs?
Yes, with caveats: both are 40 V/1–2 A Schottkys in SOD123W, but PMEG4020CERX has lower VF (500 mV vs. ~600 mV), tighter IR spec, and higher surge rating (50 A vs. 25 A). Layout compatibility is confirmed - same pad dimensions and marking orientation - though thermal performance will improve noticeably.
PMEG4020CERX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123W
- 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):
- 5.5 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 40 V
- Capacitance @ Vr, F:
- 113pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- 175°C
PMEG4020CERX FAQ
1.How can I place an order for PMEG4020CERX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4020CERX 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 PMEG4020CERX reliable?
The price and inventory of PMEG4020CERX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4020CERX is usually 5 days.
3.What payment methods are accepted for PMEG4020CERX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4020CERX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4020CERX?
PMEG4020CERX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4020CERX 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 PMEG4020CERX?
For technical support, including PMEG4020CERX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4020CERX requirements.
6.How does Aetrix verify that PMEG4020CERX is sourced from the original manufacturer or authorized distributors?
All PMEG4020CERX 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 PMEG4020CERX meets industry standards.
7.What is the process for return or replacement of PMEG4020CERX?
All PMEG4020CERX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4020CERX, 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 PMEG4020CERX part is unused and in its original packaging.
Return procedure for PMEG4020CERX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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