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Nexperia USA Inc. PMEG4005CEJ-QX
- Part No.:
- PMEG4005CEJ-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
PMEG4005CEJ-QX.pdf
- Description:
- PMEG4005CEJ-Q/SOD323F/SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:6,332
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Product details
Overview
PMEG4005CEJ-QX from Nexperia is a 40 V, 0.5 A planar Schottky barrier rectifier with integrated guard ring for stress protection, housed in an SOD323F (SC-90) 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 DC/DC converters and reverse polarity protection circuits.
For engineers reviewing the PMEG4005CEJ-QX datasheet, PMEG4005CEJ-QX pinout, PMEG4005CEJ-QX application, or PMEG4005CEJ-QX equivalent, this device is selected for low-VF, high-efficiency rectification in space-constrained automotive and portable power systems where thermal performance and reliability under transient stress are critical.
Technical Context
This Schottky diode uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve ruggedness under repetitive surge and reverse-bias stress. Its low VF stems from optimized metal-semiconductor interface design, enabling high conduction efficiency at low voltages.
Thermal behavior is defined by two key junction-to-environment paths: Rth(j-a) = 300 K/W (standard FR4 footprint) and Rth(j-sp) = 175 K/W (cathode pad enhanced), supporting stable operation up to 150 °C junction temperature with appropriate PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum continuous reverse bias before breakdown; enables use in 24 V automotive systems with margin. |
| Avg. Forward Current (IF(AV)) | 0.5 A - Sustained DC or pulsed average current capability at Tsp ≤ 135 °C on standard FR4. |
| Forward Voltage (VF) | 550 mV typ. at 500 mA, 25 °C - Reduces conduction loss by ~30% vs. comparable 1 V Si diodes in low-voltage SMPS. |
| Reverse Current (IR) | 1.5 µA typ. at 40 V, 25 °C - Minimizes standby power loss in battery-powered reverse polarity protection. |
| Reverse Recovery Time (trr) | 1.8 ns - Near-zero charge storage enables clean switching in high-frequency (>1 MHz) DC/DC topologies. |
| Junction Temp. (Tj) | 150 °C max - Supports operation in under-hood automotive environments without derating at full current. |
| Package | SOD323F (SC-90) - 1.7 × 1.25 × 0.7 mm footprint ideal for ultra-compact PCB layouts in ADAS sensors and ECUs. |
Pinout & Package
Encapsulated in the SOD323F (SC-90) plastic surface-mount package: ultra-small outline (1.7 mm × 1.25 mm × 0.7 mm body height), flat leads, single-row 2-terminal configuration optimized for reflow soldering and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative output terminal; connects to ground or return path; larger copper pad recommended for thermal dissipation. |
| 2 | Anode (A) | Positive input terminal; accepts incoming DC or switched node voltage; routed with minimal trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge breakdown and improves surge robustness - critical for automotive load-dump immunity. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and ESD testing per JEDEC standards. |
| Low thermal resistance (Rth(j-sp)) | 175 K/W with 1 cm² cathode pad - enables 0.5 A operation at 125 °C ambient without active cooling. |
| Ultra-low capacitance (Cd) | 13.5 pF at 4 V reverse bias - minimizes high-frequency switching noise and EMI in buck converter freewheel paths. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional blocking diode preventing damage during battery misconnection. Use Value: 550 mV VF limits voltage drop to <0.6 V at 0.5 A, preserving >11.4 V for logic rails while surviving 8 kV ESD per ISO 10605. |
Use Scenario: Output clamping in 5–20 V USB PD buck-boost converter to prevent backfeed into source. IC Role / Device Role / Timing Role: Low-loss freewheeling path during high-side switch off-time. Use Value: 1.8 ns trr eliminates reverse recovery spikes, reducing EMI filter size by 40% vs. standard Schottkys. |
| Industrial Sensor Node Power | Portable Medical Device Charger |
Use Scenario: Input rectification for energy-harvesting circuit powered by piezoelectric or thermoelectric generator. IC Role / Device Role / Timing Role: Low-leakage AC-to-DC conversion stage delivering microamp-level bias to LDO. Use Value: 1.5 µA IR at 25 °C ensures >99.9% of harvested µW power reaches the regulator, extending battery-less runtime. |
Use Scenario: Reverse current isolation between dual Li-ion cells in series-connected medical battery pack. IC Role / Device Role / Timing Role: Cell-balancing bypass diode during charging to prevent overvoltage on weaker cell. Use Value: 40 V VR rating safely handles 3.7 V × 4-cell stack transients (up to 16.8 V nominal), with 150 °C Tj tolerance for sealed enclosure thermal buildup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-40T2R | Same 40 V VR, but higher VF (620 mV typ.), no AEC-Q101 qualification, SOD-523 package (smaller, less thermal mass). | Not rated for automotive under-hood use; suitable only for consumer-grade portable devices with lower ambient temps. | Select when board space is tighter than thermal margin, and automotive qualification is unnecessary. |
| SS14-E3/5AT | Higher IF(AV) (1 A), larger SMA package, VF = 550 mV, but not AEC-Q101 qualified and lacks guard ring. | Supports higher current but fails automotive surge tests due to edge breakdown vulnerability. | Choose only for industrial non-automotive 12 V supplies requiring >0.5 A average current. |
Compared with RB520S-40T2R and SS14-E3/5AT, PMEG4005CEJ-QX uniquely combines AEC-Q101 compliance, guard ring ruggedness, and SOD323F compactness - making it the sole option for space-limited automotive modules needing both reliability and low loss.
Availability
PMEG4005CEJ-QX is available at Aetrix Electronics and suitable for automotive body control units, USB-C power delivery modules, and portable medical battery management systems requiring stable component supply across extended production lifecycles.
Supply support for PMEG4005CEJ-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, logic, and MOSFET solutions for automotive, industrial, and mobile markets.
This device belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for low-VF, high-reliability rectification in automotive power nets and compact DC/DC converters.
FAQ
Is PMEG4005CEJ-QX suitable for synchronous rectification?
No - it is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier IC. It functions as a unidirectional freewheeling diode and requires no gate drive. For synchronous designs, discrete N-channel MOSFETs with external controllers are used instead.
What is the maximum allowable soldering temperature for SOD323F reflow?
The peak reflow temperature must not exceed 260 °C for ≤30 seconds, per JEDEC J-STD-020. The SC-90 package supports standard lead-free reflow profiles; preheating to 150–200 °C and controlled ramp rates prevent delamination or voiding.
Does the guard ring affect electrical parameters like VF or IR?
No - the guard ring is a structural feature isolated from the active junction. It does not alter forward conduction or reverse leakage characteristics; its sole function is to redistribute electric field at the die edge and prevent premature avalanche breakdown.
Can PMEG4005CEJ-QX replace PMEG4005CEJ in existing designs?
Yes - PMEG4005CEJ-QX is the automotive-qualified variant of PMEG4005CEJ, sharing identical electrical specs, pinout, and package. The "-QX" suffix denotes AEC-Q101 qualification and enhanced traceability; no layout or schematic changes are needed for drop-in replacement in automotive designs.
PMEG4005CEJ-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- 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:
- 640 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.8 ns
- Current - Reverse Leakage @ Vr:
- 8 µA @ 40 V
- Capacitance @ Vr, F:
- 24pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
- Operating Temperature - Junction:
- 150°C
PMEG4005CEJ-QX FAQ
1.How can I place an order for PMEG4005CEJ-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005CEJ-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 PMEG4005CEJ-QX reliable?
The price and inventory of PMEG4005CEJ-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005CEJ-QX is usually 5 days.
3.What payment methods are accepted for PMEG4005CEJ-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005CEJ-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005CEJ-QX?
PMEG4005CEJ-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005CEJ-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 PMEG4005CEJ-QX?
For technical support, including PMEG4005CEJ-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005CEJ-QX requirements.
6.How does Aetrix verify that PMEG4005CEJ-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4005CEJ-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 PMEG4005CEJ-QX meets industry standards.
7.What is the process for return or replacement of PMEG4005CEJ-QX?
All PMEG4005CEJ-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005CEJ-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 PMEG4005CEJ-QX part is unused and in its original packaging.
Return procedure for PMEG4005CEJ-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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