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Nexperia USA Inc. PMEG4030CER-QX
- Part No.:
- PMEG4030CER-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
PMEG4030CER-QX.pdf
- Description:
- 40 V, 3 A SCHOTTKY RECTIFIER IN
- Quantity:
- Payment:
- Shipping:
Inventory:2,677
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Product details
Overview
PMEG4030CER-QX from Nexperia is a 40 V, 3 A planar Schottky barrier rectifier in CFP3 (SOD123W) surface-mount package, designed for low-loss power conversion in automotive-grade DC/DC stages and reverse polarity protection circuits. It delivers VF = 560–630 mV at 3 A and 25 °C, IR ≤ 50 µA at 40 V/25 °C, and supports Tj up to 175 °C with AEC-Q101 qualification.
For engineers reviewing the PMEG4030CER-QX datasheet, PMEG4030CER-QX pinout, PMEG4030CER-QX application, or PMEG4030CER-QX equivalent, this device is selected for high-efficiency rectification where low forward voltage drop, thermal robustness on FR4 PCBs, and automotive reliability are critical design requirements.
Technical Context
This Schottky diode uses a planar metal–semiconductor junction architecture optimized for minimal conduction loss and fast recovery. Its clip-bond construction reduces thermal resistance to Rth(j-sp) = 18 K/W and enables IF(AV) = 3 A under δ = 0.5 square-wave excitation with solder point temperature ≤ 160 °C.
The device exhibits trr ≤ 5.5 ns (ramp recovery), Cd = 40 pF at VR = 10 V, and stable VF across -40 °C to 125 °C - enabling use in high-frequency SMPS and cold-start automotive systems without significant voltage derating or snubber overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 40 V maximum reverse voltage - sets upper limit for blocking capability in 24 V automotive systems and 36 V industrial rails. |
| IF(AV) | 3 A average forward current - supports continuous operation in compact DC/DC converters with standard FR4 footprint. |
| VF @ 3 A | 560–630 mV at 25 °C - directly reduces conduction loss by ~30 % vs. comparable silicon diodes, improving efficiency in 5–12 V output stages. |
| IR @ 40 V | ≤ 50 µA at 25 °C; ≤ 25 mA at 125 °C - ensures low leakage in battery-backed circuits and defines thermal runaway margin in high-temp environments. |
| Rth(j-sp) | 18 K/W - enables direct thermal coupling to cathode pad, allowing >1.15 W dissipation with 1 cm² copper area at Tamb ≤ 25 °C. |
| trr | ≤ 5.5 ns ramp recovery - eliminates need for external snubbers in >500 kHz switching topologies and minimizes switching loss in synchronous rectifiers. |
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. Cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Main current exit terminal; connected to thermal pad for heat transfer; marking bar identifies this pin. |
| 2 (A) | Anode | Current entry terminal; electrically isolated from thermal path; routed to input rail or switch node. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high current | 560–630 mV @ 3 A/25 °C - cuts conduction loss below 2 W in 12 V/3 A outputs, reducing heatsink needs. |
| AEC-Q101 qualified | Stress-tested per automotive discrete standard - validated for 175 °C junction operation and thermal cycling in engine control units. |
| Clip-bond packaging | Enables 4.2 A peak forward current (IF) and 50 A non-repetitive surge (IFSM) - supports load dump and cold-crank transient handling. |
| Small SOD123W footprint | 2.6 mm × 1.7 mm area - fits dense PCB layouts in ADAS camera modules and infotainment power supplies without sacrificing thermal performance. |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Delivery Adapter |
|---|---|
|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed between connector and LDO input. Use Value: Prevents damage during incorrect battery jump-start; 560 mV VF limits voltage drop to <1% at 2 A, preserving brown-out margin. |
Use Scenario: Output rectification in 20 V/3 A flyback converter powering USB-C PD sink. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier synchronized with primary MOSFET switching. Use Value: 5.5 ns trr avoids overlap loss at 600 kHz; 40 pF capacitance minimizes EMI generation during turn-off. |
| Industrial PLC I/O Module | LED Headlight Driver |
|
Use Scenario: Low-voltage rectification of 5 V auxiliary rail derived from 24 V field bus. IC Role / Device Role / Timing Role: Input-stage freewheeling diode in buck converter supplying digital logic. Use Value: 3 A IF(AV) rating sustains full load under 70 °C ambient; 175 °C Tj allows operation near heat-generating FPGA. |
Use Scenario: Reverse current blocking in constant-current LED string driver with PWM dimming. IC Role / Device Role / Timing Role: Isolation diode between boost stage and LED load to prevent backfeed during PWM off-time. Use Value: ≤50 µA IR at 25 °C ensures <100 nA standby leakage per string, extending battery runtime in emergency lighting mode. |
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-3EYH04-M3/54 | 40 V, 3 A; VF = 590 mV @ 3 A; Rth(j-a) = 125 K/W (FR4); no AEC-Q101 certification | Rated for commercial/industrial use only; not qualified for automotive underhood placement | Select when cost sensitivity outweighs automotive qualification and thermal performance is less constrained. |
| ON Semiconductor NSR3G40NXT5G | 40 V, 3 A; VF = 550 mV @ 3 A; Rth(j-sp) = 20 K/W; AEC-Q101 qualified; SOD-123 package (not clip-bond) | Slightly lower VF but higher thermal resistance; lacks clip-bond mechanical robustness for vibration-prone mounts | Prefer for space-constrained designs needing lowest VF, where solder joint reliability under shock is secondary. |
Compared with VS-3EYH04-M3/54 and NSR3G40NXT5G, PMEG4030CER-QX offers superior thermal coupling (18 K/W), AEC-Q101 validation, and clip-bond surge tolerance - making it optimal for automotive power rails requiring long-term reliability under thermal and mechanical stress.
Availability
PMEG4030CER-QX is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power adapters, and industrial PLC I/O modules requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for PMEG4030CER-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 focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
This part belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, thermally demanding automotive power conversion and protection functions.
FAQ
What is the maximum allowable solder point temperature for PMEG4030CER-QX during reflow?
The datasheet specifies Tsp ≤ 160 °C for δ = 0.5 operation and ≤156 °C for DC (δ = 1). Reflow profiles must ensure peak solder point temperature does not exceed 260 °C for ≤10 s, per JEDEC J-STD-020, with thermal profile validated using the recommended CFP3 footprint in Figure 16.
Can PMEG4030CER-QX replace a standard silicon rectifier in an existing 24 V SMPS design?
Yes - its 40 V VR rating and 3 A IF(AV) match common 1N5822 replacements. However, due to lower VF and zero minority-carrier storage, layout must minimize parasitic inductance to avoid voltage overshoot; no snubber is needed, but input capacitor ESR should be ≤20 mΩ to damp ringing.
Is the cathode terminal electrically connected to the thermal pad in CFP3 package?
Yes - Pin 1 (K) is the cathode and also serves as the thermal pad. The entire bottom metallization is cathode-connected; PCB land must be solid copper tied to system ground or low-impedance return plane to achieve Rth(j-sp) = 18 K/W.
How does IR change at elevated temperature, and what design impact does that have?
IR increases from ≤50 µA at 25 °C to ≤25 mA at 125 °C - a 500× rise. This demands careful thermal design: in battery-disconnect circuits, IR at 125 °C contributes ~0.6 W reverse loss at 40 V, requiring thermal derating or active cooling to avoid thermal runaway in enclosed housings.
PMEG4030CER-QX 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 630 mV @ 3 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- 175°C
PMEG4030CER-QX FAQ
1.How can I place an order for PMEG4030CER-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4030CER-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 PMEG4030CER-QX reliable?
The price and inventory of PMEG4030CER-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4030CER-QX is usually 5 days.
3.What payment methods are accepted for PMEG4030CER-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4030CER-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4030CER-QX?
PMEG4030CER-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4030CER-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 PMEG4030CER-QX?
For technical support, including PMEG4030CER-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4030CER-QX requirements.
6.How does Aetrix verify that PMEG4030CER-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4030CER-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 PMEG4030CER-QX meets industry standards.
7.What is the process for return or replacement of PMEG4030CER-QX?
All PMEG4030CER-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4030CER-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 PMEG4030CER-QX part is unused and in its original packaging.
Return procedure for PMEG4030CER-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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