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Nexperia USA Inc. PMEG4020EPAS-QX
- Part No.:
- PMEG4020EPAS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
PMEG4020EPAS-QX.pdf
- Description:
- PMEG4020EPAS-Q/SOT1061/HUSON3
- Quantity:
- Payment:
- Shipping:
Inventory:9,146
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Product details
Overview
PMEG4020EPAS-QX from Nexperia is a 40 V, 2 A low forward-voltage Schottky barrier rectifier in an ultra-thin DFN2020D-3 (SOT1061D) package, featuring integrated guard ring stress protection and exposed cathode pad for thermal management. It delivers VF = 470–535 mV at 2 A and IR ≤ 100 µA at 40 V, enabling high-efficiency low-voltage rectification in space-constrained automotive and portable power systems.
For engineers reviewing the PMEG4020EPAS-QX datasheet, PMEG4020EPAS-QX pinout, PMEG4020EPAS-QX application, or PMEG4020EPAS-QX equivalent, key selection criteria include its AEC-Q101 qualification, 240 K/W Rth(j-a) on FR4 PCB, dual-anode configuration, and suitability for reverse polarity protection and DC-DC freewheeling in battery-powered mobile equipment.
Technical Context
This MEGA Schottky rectifier uses planar silicon technology with an integrated guard ring to suppress edge breakdown and improve reliability under voltage transients. Its low VF and negligible reverse recovery time (trr = 6 ns) eliminate switching losses in high-frequency SMPS topologies.
The device operates with dual anode terminals (Pins 1 & 2) tied internally and connected externally to maximize current handling, while the exposed cathode pad (Pin 3) serves as both electrical return and primary thermal path-enabling 10 K/W Rth(j-sp) when soldered to a 1 cm² copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum blocking capability without avalanche breakdown; suitable for 24 V automotive rail protection. |
| Average Forward Current (IF(AV)) | 2 A - Sustained DC or pulsed current capacity at Tsp ≤ 140 °C on standard FR4 PCB. |
| Forward Voltage (VF) | 470–535 mV @ 2 A - Low conduction loss reduces heat generation and improves efficiency in compact DC-DC converters. |
| Reverse Current (IR) | 20–100 µA @ 40 V - Minimal leakage preserves battery life in always-on reverse-polarity protection circuits. |
| Reverse Recovery Time (trr) | 6 ns - Near-zero charge storage enables operation >1 MHz without switching loss penalty. |
| Junction Temperature (Tj) | 150 °C max - Enables reliable operation in under-hood automotive environments and sealed portable enclosures. |
| Thermal Resistance (Rth(j-sp)) | 10 K/W - Cathode-to-solder-point path allows efficient heat transfer to PCB copper, critical for thermally dense layouts. |
Pinout & Package
Encapsulated in the ultra-thin DFN2020D-3 (SOT1061D) package: 2.0 × 2.0 × 0.65 mm body, leadless, with visible and solderable side pads and exposed cathode thermal pad on bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Primary anode connection; electrically tied to Pin 2; used for high-current input routing. |
| 2 | Anode | Secondary anode terminal; parallel connection with Pin 1 increases current-carrying cross-section and reduces trace resistance. |
| 3 | Cathode | Exposed metal pad-serves as main current return path and dominant thermal interface to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards. |
| Integrated guard ring | Suppresses edge-field concentration to prevent premature breakdown under transient overvoltage conditions. |
| Exposed cathode pad | Enables <10 K/W junction-to-solder-point thermal resistance when mounted on ≥1 cm² copper area. |
| Low-profile DFN2020D-3 | 0.65 mm max height supports ultra-thin end products such as smartphones and wearables. |
| AOI-compatible side pads | Visible solderable terminals allow automated optical inspection of solder joint integrity post-reflow. |
Applications
| Automotive Reverse Polarity Protection | Mobile Device Battery Charging Circuit |
|---|---|
Use Scenario: Prevents damage from incorrect battery connection in 12 V/24 V vehicle infotainment modules. IC Role / Device Role / Timing Role: Unidirectional current gate placed between battery terminal and system input rail. Use Value: 40 V VR rating withstands load-dump transients; low VF minimizes voltage drop during cranking conditions. |
Use Scenario: Isolates USB input from Li-ion battery during charging in Bluetooth earbuds and smartwatches. IC Role / Device Role / Timing Role: OR-ing diode ensuring power flows only from charger to battery, not vice versa. Use Value: 20–100 µA IR at 40 V prevents self-discharge; 6 ns trr avoids shoot-through in fast-switching buck chargers. |
| High-Frequency DC-DC Freewheeling | LED Backlight Power Path |
Use Scenario: Freewheeling path in 2 MHz synchronous buck converter powering FPGA core rails. IC Role / Device Role / Timing Role: Low-loss catch diode replacing MOSFET body diode in non-synchronous mode. Use Value: 470–535 mV VF reduces conduction loss by >40% vs. standard Schottkys; dual-anode layout lowers parasitic inductance. |
Use Scenario: Reverse-blocking element in white LED string driver for automotive instrument clusters. IC Role / Device Role / Timing Role: Series protection diode preventing backfeed from LED capacitors into supply during fault events. Use Value: 150 °C Tj rating ensures stable operation near hot LCD panels; 0.65 mm profile fits tight bezel constraints. |
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; TO-220FP package (4.5 mm height); no AEC-Q101 qualification. | Requires larger PCB area and lacks automotive qualification; better suited for industrial AC-DC secondary side. | Select only if board height >4 mm is acceptable and automotive compliance is unnecessary. |
| SS24H | 40 V VR, 2 A IF(AV), VF = 500 mV @ 2 A; SMA package; AEC-Q101 qualified; Rth(j-a) = 125 K/W (vs. 240 K/W for PMEG4020EPAS-QX on FR4). | Higher thermal resistance limits power density; less effective in thermally constrained mobile designs. | Prefer for legacy SMA footprints where rework is prohibitive, but expect higher junction temperatures at full load. |
Compared with RB055LAM-40 and SS24H, PMEG4020EPAS-QX offers superior thermal performance in ultra-thin layouts due to its exposed cathode pad and DFN2020D-3 footprint, while maintaining AEC-Q101 compliance and lowest VF among automotive-qualified 2 A Schottkys in its class.
Availability
PMEG4020EPAS-QX is available at Aetrix Electronics and suitable for automotive infotainment systems, portable medical monitors, and high-density DC-DC power modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PMEG4020EPAS-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 specializing in high-performance, high-reliability discrete, logic, and MOSFET devices, with leadership in automotive-qualified components.
The PMEG4020EPAS-QX belongs to Nexperia's MEGA Schottky rectifier family, engineered specifically for low-VF, high-current efficiency in space- and thermal-constrained automotive and portable power applications.
FAQ
What does the "-QX" suffix indicate in PMEG4020EPAS-QX?
The "-QX" suffix denotes Nexperia's automotive-grade variant, fully qualified to AEC-Q101 standards and manufactured in IATF 16949-certified facilities. It includes enhanced traceability, lot-level test data, and extended temperature screening (−55 °C to +150 °C), distinguishing it from commercial-grade PMEG4020EPAS parts.
Can Pins 1 and 2 be used independently in layout?
No-Pins 1 and 2 are internally shorted anode terminals and must be routed together to maintain rated 2 A current capacity and thermal balance. Using them separately violates the device's internal construction and risks uneven current sharing, localized heating, and premature failure under load.
Is the exposed cathode pad electrically isolated from other pins?
Yes-the exposed cathode pad (Pin 3) is the sole cathode connection and is electrically isolated from Pins 1 and 2. It must be connected exclusively to the system ground or negative rail; connecting it to any other net creates a short circuit and will destroy the device.
How does the guard ring affect layout requirements?
The integrated guard ring eliminates need for external field-relief structures or increased creepage distances. Layout requires only standard 0.2 mm solder mask clearance around the cathode pad and 0.15 mm spacing between anode pads-no additional guard traces or slots are necessary for voltage robustness up to 40 V.
PMEG4020EPAS-QX 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
PMEG4020EPAS-QX FAQ
1.How can I place an order for PMEG4020EPAS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4020EPAS-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 PMEG4020EPAS-QX reliable?
The price and inventory of PMEG4020EPAS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4020EPAS-QX is usually 5 days.
3.What payment methods are accepted for PMEG4020EPAS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4020EPAS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4020EPAS-QX?
PMEG4020EPAS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4020EPAS-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 PMEG4020EPAS-QX?
For technical support, including PMEG4020EPAS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4020EPAS-QX requirements.
6.How does Aetrix verify that PMEG4020EPAS-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4020EPAS-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 PMEG4020EPAS-QX meets industry standards.
7.What is the process for return or replacement of PMEG4020EPAS-QX?
All PMEG4020EPAS-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4020EPAS-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 PMEG4020EPAS-QX part is unused and in its original packaging.
Return procedure for PMEG4020EPAS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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