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Nexperia USA Inc. PMEG4005CEA-QX
- Part No.:
- PMEG4005CEA-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PMEG4005CEA-QX.pdf
- Description:
- PMEG4005CEA-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:795
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Product details
Overview
PMEG4005CEA-QX from Nexperia is a 40 V, 0.5 A planar Schottky barrier rectifier with integrated guard ring for stress protection, housed in an SOD323 (SC-76) surface-mount package. It delivers low forward voltage (550 mV typ. at 500 mA), low reverse leakage (1.5 µA typ. at 40 V, 25 °C), and is qualified to AEC-Q101 for automotive use - deployed in reverse polarity protection and DC/DC converter output stages.
For engineers reviewing the PMEG4005CEA-QX datasheet, PMEG4005CEA-QX pinout, PMEG4005CEA-QX application, or PMEG4005CEA-QX equivalent, this device is selected for low-loss, space-constrained rectification where thermal robustness, fast recovery (<2 ns), and automotive-grade reliability are required.
Technical Context
This Schottky diode uses a planar junction structure with an integrated guard ring to enhance ruggedness against transient overvoltage and electrostatic stress. Its low VF stems from optimized metal-semiconductor interface design, enabling high efficiency in low-voltage power rails.
Thermal performance is defined by Rth(j-sp) = 225 K/W (cathode pad on 1 cm² copper) and Tj max = 150 °C, supporting operation in compact automotive modules where solder-point temperature tracking is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum blocking capability without breakdown; suitable for 24 V automotive systems with margin. |
| Average Forward Current (IF(AV)) | 0.5 A - Continuous DC current handling at Tsp ≤ 135 °C on standard FR4 PCB. |
| Forward Voltage (VF) | 550 mV typ. at 500 mA, 25 °C - Reduces conduction loss by ~30% vs. standard silicon diodes in 3.3–5 V rail rectification. |
| Reverse Current (IR) | 1.5 µA typ. at 40 V, 25 °C - Minimizes standby power loss in battery-backed circuits. |
| Reverse Recovery Time (trr) | 1.8 ns - Enables clean switching in high-frequency SMPS (>1 MHz) without tail current losses. |
| Diode Capacitance (Cd) | 24 pF at 1 V, 1 MHz - Low capacitance preserves signal integrity in RF-coupled bias networks. |
| Junction Temperature (Tj) | 150 °C max - Supports under-hood operation in automotive ECUs and ADAS sensors. |
Pinout & Package
Encapsulated in a miniature SOD323 (SC-76) plastic SMD package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch. The package features a cathode tab optimized for thermal transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to internal N-type epitaxial layer; primary heat path to PCB via exposed cathode pad. |
| 2 | Anode (A) | Connected to platinum-titanium Schottky contact; carries forward current into load. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Prevents edge breakdown during voltage transients, improving surge immunity in automotive load-dump conditions. |
| AEC-Q101 qualification | Validated for automotive use per stress test requirements including HTGB, HTRB, and ESD-HBM ≥ 2 kV. |
| Low thermal resistance (Rth(j-sp)) | 225 K/W enables 0.5 A operation with <10 °C rise above solder point on 1 cm² cathode pad. |
| Ultra-fast recovery | 1.8 ns trr eliminates reverse recovery spikes in synchronous rectifier auxiliary paths. |
| Small outline footprint | SOD323 saves >60% board area vs. SOD123 while maintaining comparable thermal performance. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply input of BCM microcontroller power rail. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from incorrect battery connection. Use Value: 550 mV VF limits voltage drop to <0.6 V at 0.5 A, preserving brown-out margin for 3.3 V LDOs. |
Use Scenario: Output OR-ing diode in dual-source USB-C PD adapter (5 V/9 V/15 V). IC Role / Device Role / Timing Role: Prevents backfeed between parallel buck converters during dynamic load steps. Use Value: 1.8 ns trr avoids shoot-through during source switchover, eliminating output voltage glitch. |
| Industrial Sensor Node Power | Low-Power IoT Gateway Bias Rail |
Use Scenario: Input rectification for energy-harvesting circuit powered by piezoelectric transducer. IC Role / Device Role / Timing Role: Converts AC pulses from transducer to stable DC for supercapacitor charging. Use Value: 1.5 µA IR at 25 °C ensures <1 nA leakage into storage capacitor, extending hold-up time by >12 hours. |
Use Scenario: Reverse-blocking diode in coin-cell backup path for real-time clock (RTC) supply. IC Role / Device Role / Timing Role: Isolates main 3.3 V rail from RTC VBAT during power failure. Use Value: SOD323 footprint fits within 2.0 mm × 1.5 mm keep-out zone adjacent to RTC IC, enabling ultra-compact layout. |
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 NSR0540HT1G | Same 40 V/0.5 A rating but higher VF (620 mV typ.), no AEC-Q101 qualification. | Limited to industrial/commercial use; not approved for automotive ECU designs. | Select when cost sensitivity outweighs automotive compliance and 70 mV higher VF is acceptable. |
| Vishay VS-50SQ040H-M3/5BT | Higher IF(AV) (5 A), TO-277 package; 10× larger footprint and 3× higher thermal mass. | Suitable only where board space and thermal inertia are unconstrained (e.g., main PSU outputs). | Choose only if system requires >1 A average current or needs direct heatsink mounting - not a drop-in replacement. |
Compared with NSR0540HT1G and VS-50SQ040H-M3/5BT, PMEG4005CEA-QX uniquely balances AEC-Q101 compliance, sub-millimeter footprint, and 550 mV VF, making it optimal for space- and reliability-critical automotive sensor nodes and portable power interfaces.
Availability
PMEG4005CEA-QX is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery clamps, and industrial sensor node power supplies requiring stable component supply across multi-year production cycles.
Supply support for PMEG4005CEA-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-enhancing components, with leadership in logic, discrete, and MOSFET technologies serving automotive, industrial, and mobile markets.
This device belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability, low-loss DC power path protection in automotive electronics and compact power conversion systems.
FAQ
Is PMEG4005CEA-QX suitable for reflow soldering on FR4 PCBs?
Yes - it is qualified for standard lead-free reflow profiles (J-STD-020, peak 260 °C). The SOD323 package uses tin-plated terminations compatible with SnAgCu paste, and thermal data confirms safe operation with Rth(j-sp) = 225 K/W on 1 cm² cathode copper.
What is the maximum pulsed forward current rating?
The non-repetitive peak forward current (IFSM) is 8 A for 8 ms square-wave pulses at Tj(init) = 25 °C. This supports inrush current limiting in hot-swap circuits and transient overload protection in 24 V automotive subsystems.
Does the guard ring affect electrical parameters like capacitance or leakage?
No - the guard ring is a passive field-relief structure outside the active junction area. Measured Cd (24 pF at 1 V) and IR (1.5 µA at 40 V, 25 °C) reflect only the main Schottky junction; guard ring adds no parasitic capacitance or leakage path.
Can PMEG4005CEA-QX replace older PMEG4005EBA in existing designs?
Yes - both share identical SOD323 package, pinout, and electrical specs. PMEG4005CEA-QX adds AEC-Q101 qualification and tighter VF distribution (550–640 mV vs. 570–660 mV), enabling direct substitution in automotive upgrades without layout change.
PMEG4005CEA-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 8 mA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -
PMEG4005CEA-QX FAQ
1.How can I place an order for PMEG4005CEA-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005CEA-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 PMEG4005CEA-QX reliable?
The price and inventory of PMEG4005CEA-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005CEA-QX is usually 5 days.
3.What payment methods are accepted for PMEG4005CEA-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005CEA-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005CEA-QX?
PMEG4005CEA-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005CEA-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 PMEG4005CEA-QX?
For technical support, including PMEG4005CEA-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005CEA-QX requirements.
6.How does Aetrix verify that PMEG4005CEA-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4005CEA-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 PMEG4005CEA-QX meets industry standards.
7.What is the process for return or replacement of PMEG4005CEA-QX?
All PMEG4005CEA-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005CEA-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 PMEG4005CEA-QX part is unused and in its original packaging.
Return procedure for PMEG4005CEA-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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