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Nexperia USA Inc. PMEG4020EPASX
- Part No.:
- PMEG4020EPASX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
PMEG4020EPASX.pdf
- Description:
- DIODE SCHOTTKY 40V 2A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:23,853
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Product details
Overview
PMEG4020EPASX from Nexperia is a 40 V, 2 A low forward-voltage Schottky barrier rectifier in a DFN2020D-3 (SOT1061D) package, featuring integrated guard ring stress protection and an exposed cathode pad for thermal management. It delivers VF = 470–535 mV at IF = 2 A and IR ≤ 100 µA at VR = 40 V, enabling high-efficiency DC-to-DC conversion in space-constrained mobile power supplies.
For engineers reviewing the PMEG4020EPASX datasheet, PMEG4020EPASX pinout, PMEG4020EPASX application, or PMEG4020EPASX equivalent, key selection criteria include its AEC-Q101 qualification, ultra-thin 2.0 × 2.0 × 0.65 mm footprint, dual-anode configuration, and suitability for reverse polarity protection and battery charger circuits requiring low conduction loss.
Technical Context
This MEGA Schottky rectifier uses planar technology with an integrated guard ring to enhance surge robustness and reduce leakage under high dv/dt stress. Its low VF stems from optimized metal-semiconductor junction design and thin epitaxial layer control, delivering superior efficiency over conventional Schottkys in low-voltage (<40 V) power paths.
The device operates with two paralleled anode terminals (Pins 1 & 2) and one cathode terminal (Pin 3), enabling higher current handling without increasing trace resistance. Thermal performance is enhanced via direct copper exposure on the cathode pad, achieving Rth(j-sp) = 10 K/W to solder point and supporting continuous IF(AV) = 2 A at Tsp ≤ 140 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 40 V - Maximum blocking voltage before breakdown; defines safe operating range in 12–36 V input rails. |
| IF(AV) (Avg. Forward Current) | 2 A - Sustained DC current capability with proper PCB thermal layout; supports compact 2 A SMPS outputs. |
| VF (Forward Voltage) | 470–535 mV @ 2 A - Low conduction loss reduces heat generation and improves efficiency in battery-powered systems. |
| IR (Reverse Current) | 20–100 µA @ 40 V - Minimal leakage preserves standby power integrity in always-on mobile applications. |
| trr (Reverse Recovery Time) | 6 ns - Near-zero recovery charge enables clean switching in high-frequency (>1 MHz) DC-DC converters. |
| Package | DFN2020D-3 (SOT1061D) - 2.0 × 2.0 × 0.65 mm ultra-thin leadless package with visible side pads for AOI and thermal relief. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Encapsulated in the DFN2020D-3 (SOT1061D) package: ultra-thin 2.0 mm × 2.0 mm body, 0.65 mm max height, with exposed cathode pad on bottom and solderable side pads for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Primary anode connection; electrically identical to Pin 2; used in parallel to reduce series resistance and improve current sharing. |
| 2 | Anode | Secondary anode connection; must be connected to same net as Pin 1 to achieve rated 2 A average current and thermal derating. |
| 3 | Cathode | Exposed copper pad - serves as main thermal path to PCB and primary return path; requires ≥1 cm² copper pour for 1900 mW dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Enhances ESD and transient surge immunity without external components; critical for USB/charger port protection. |
| Exposed cathode pad | Enables Rth(j-sp) = 10 K/W - allows >1.9 W power dissipation with minimal junction-to-PCB thermal resistance. |
| AOI-compatible side pads | Visible solderable terminals support automated optical inspection - eliminates hidden joint defects in high-volume SMT lines. |
| Ultra-thin profile | 0.65 mm max height enables use in slim mobile devices (e.g., smartphones, wearables) where Z-height is constrained. |
| Low capacitance (Cd) | 100 pF @ 10 V - minimizes switching noise and EMI in high-frequency buck converters and LED drivers. |
Applications
| Mobile Battery Charger | Automotive USB Power Module |
|---|---|
Use Scenario: Input rectification and reverse polarity protection in single-cell Li-ion fast-charging circuits (5 V–9 V input). IC Role / Device Role / Timing Role: Schottky rectifier placed between USB-C PD source and charging IC to block reverse current and minimize conduction loss. Use Value: 470 mV VF at 2 A reduces power loss by >30% vs. standard 0.7 V diodes, extending battery runtime and limiting thermal rise in sealed enclosures. |
Use Scenario: Reverse voltage protection in 12 V automotive USB-A/USB-C accessory ports. IC Role / Device Role / Timing Role: Front-end protection diode preventing battery drain or module damage during incorrect battery cable insertion. Use Value: AEC-Q101 qualification ensures operation across −40 °C to +125 °C ambient, while 100 µA IR at 40 V prevents parasitic discharge in parked-vehicle scenarios. |
| LED Backlight Driver | Point-of-Load DC-DC Converter |
Use Scenario: Freewheeling path in boost-based white LED drivers for smartphone displays. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in discontinuous conduction mode (DCM) boost topology. Use Value: 6 ns trr and low Cd suppress ringing and EMI, enabling stable 1.2 MHz switching without snubbers or layout compromises. |
Use Scenario: Output rectification in 3.3 V/2 A buck converter supplying FPGA or SoC core rails. IC Role / Device Role / Timing Role: Low-VF output diode in non-synchronous buck stage where MOSFET sync is cost-prohibited. Use Value: Dual-anode layout lowers effective RDS(on)-equivalent resistance, sustaining 2 A output with <0.5 °C/W thermal resistance when mounted on 1 cm² copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB055LAM-40 | Same 40 V VR, but VF = 550 mV @ 2 A; larger SOD-123FL package (3.5 × 1.6 mm); no AEC-Q101 rating. | Lacks automotive qualification and thermal performance; suitable only for consumer-grade, non-AOI production. | Select when cost is prioritized over thermal density and automotive compliance. |
| SS24H | 40 V VR, VF = 500 mV @ 2 A; SMB package (4.6 × 3.6 mm); 1.5× larger footprint; Rth(j-a) = 60 K/W vs. 65 K/W (DFN). | Higher profile limits use in ultra-thin devices; lacks guard ring and side-pad AOI support. | Choose when legacy SMB footprint compatibility is required and board area is not constrained. |
Compared with RB055LAM-40 and SS24H, PMEG4020EPASX offers superior thermal density (0.65 mm height, 10 K/W Rth(j-sp)), AEC-Q101 validation, and AOI-ready construction-making it optimal for next-gen mobile and automotive power modules where size, reliability, and process yield are critical.
Availability
PMEG4020EPASX is available at Aetrix Electronics and suitable for mobile battery chargers, automotive USB power modules, LED backlight drivers, and point-of-load DC-DC converters requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for PMEG4020EPASX 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 devices, with leadership in automotive-qualified small-signal and power components.
PMEG4020EPASX belongs to Nexperia's MEGA Schottky rectifier product line-engineered specifically for low-voltage, high-efficiency power conversion in space- and thermally-constrained portable and automotive electronics.
FAQ
What is the maximum continuous forward current for PMEG4020EPASX under standard PCB conditions?
The device supports IF(AV) = 2 A when mounted on a ceramic Al₂O₃ PCB (standard footprint) at Tamb ≤ 65 °C with square-wave excitation (δ = 0.5, f = 20 kHz). On FR4 with 1 cm² cathode copper, it sustains 2 A up to Tsp ≤ 140 °C, verified per IEC 60134 limiting values.
Does PMEG4020EPASX require special PCB layout considerations for thermal performance?
Yes. To achieve rated 2 A current and 1900 mW power dissipation, the exposed cathode pad (Pin 3) must be connected to ≥1 cm² of 1 oz copper on the PCB. The dual-anode pins (1 & 2) must be routed to the same net with low-inductance traces to ensure balanced current sharing and avoid localized heating.
Is the marking code 'CS' sufficient to identify PMEG4020EPASX on the physical device?
Yes. Per the datasheet, PMEG4020EPASX is marked with 'CS' on the top surface of the DFN2020D-3 package. This code is unique to this part number within Nexperia's MEGA Schottky family and matches ordering information in Table 3.
Can PMEG4020EPASX replace standard PN-junction diodes in reverse polarity protection circuits?
Yes-its 40 V VR and 100 µA IR at 40 V make it ideal for reverse polarity protection in 12–36 V systems. Unlike PN diodes, its near-zero trr avoids turn-on delay during hot-swap events, and its low VF prevents excessive voltage drop that could starve downstream regulators during cold cranking or low-battery conditions.
PMEG4020EPASX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-UDFN Exposed Pad
- 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:
- 535 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 6 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- 270pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2020D-3
- Operating Temperature - Junction:
- 150°C (Max)
PMEG4020EPASX FAQ
1.How can I place an order for PMEG4020EPASX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4020EPASX 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 PMEG4020EPASX reliable?
The price and inventory of PMEG4020EPASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4020EPASX is usually 5 days.
3.What payment methods are accepted for PMEG4020EPASX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4020EPASX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4020EPASX?
PMEG4020EPASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4020EPASX 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 PMEG4020EPASX?
For technical support, including PMEG4020EPASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4020EPASX requirements.
6.How does Aetrix verify that PMEG4020EPASX is sourced from the original manufacturer or authorized distributors?
All PMEG4020EPASX 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 PMEG4020EPASX meets industry standards.
7.What is the process for return or replacement of PMEG4020EPASX?
All PMEG4020EPASX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4020EPASX, 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 PMEG4020EPASX part is unused and in its original packaging.
Return procedure for PMEG4020EPASX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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