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Nexperia USA Inc. PMEG4005AEA-QX
- Part No.:
- PMEG4005AEA-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PMEG4005AEA-QX.pdf
- Description:
- PMEG4005AEA-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:9,184
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Product details
Overview
PMEG4005AEA-Q from Nexperia is a planar Maximum Efficiency General Application (MEGA) Schottky barrier rectifier with integrated guard ring for stress protection, rated at 40 V reverse voltage, 500 mA forward current, and 420–470 mV forward voltage at 500 mA. It serves as a low-loss unidirectional power switch in automotive-grade DC/DC converters and polarity protection circuits.
For engineers reviewing the PMEG4005AEA-Q datasheet, PMEG4005AEA-Q pinout, PMEG4005AEA-Q application, or PMEG4005AEA-Q equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low VF performance at low IF, junction-to-solder-point thermal resistance of 90 K/W, and SOD323 package compatibility with high-density PCB layouts.
Technical Context
This Schottky rectifier uses a planar MEGA structure with an integrated guard ring to suppress edge breakdown and improve surge robustness. Its low barrier height enables sub-470 mV VF at 500 mA while maintaining IR ≤ 100 µA at 40 V - critical for standby efficiency in battery-powered systems.
Thermal design relies on direct cathode tab conduction: Rth(j-sp) = 90 K/W to solder point, validated on FR4 with 1 cm² cathode pad. The device operates up to 150 °C junction temperature and withstands 10 A non-repetitive peak forward current (8 ms square wave), supporting load dump and cold-crank transient handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - maximum blocking capability in automotive 12 V systems with 33 % headroom above nominal rail. |
| Forward Voltage (VF) | 420–470 mV @ 500 mA - reduces conduction loss by ≥30 % vs. standard Schottkys, enabling >95 % efficiency in 3.3 V/5 V buck stages. |
| Reverse Current (IR) | 30–100 µA @ 40 V - low leakage preserves battery life in always-on modules like CAN transceivers or door controllers. |
| Peak Forward Surge (IFSM) | 10 A @ 8 ms - sustains automotive load-dump transients without degradation or thermal runaway. |
| Junction-to-Solder-Point Rth | 90 K/W - enables direct thermal coupling to copper pour, reducing ΔTj by ~40 % vs. junction-to-ambient (450 K/W). |
| Capacitance (Cd) | 43–50 pF @ 1 V - minimizes switching node ringing in high-frequency (>1 MHz) synchronous rectifiers. |
Pinout & Package
Encapsulated in a SOD323 (SC-76) surface-mount plastic package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Primary current exit path; connects to ground or low-side return; thermal interface for solder-point heat extraction. |
| 2 (A) | Anode | Input terminal for forward-biased operation; routed to input rail or switched node in buck converter topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge electric field concentration, enabling stable 40 V VR rating in ultra-small SOD323 footprint without derating. |
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control units and body electronics with full temperature cycling and HTRB testing. |
| Low thermal resistance (Rth(j-sp)) | 90 K/W to solder point allows >0.5 W continuous dissipation on standard FR4 with minimal copper area - no thermal vias required. |
| Pulsed surge capability | 3.5 A repetitive (1 ms) and 10 A non-repetitive (8 ms) forward current supports ISO 7637-2 pulse 5a/b load-dump immunity. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity protection for LIN bus transceivers and LED drivers in door modules. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery jump-start misconnection. Use Value: 420 mV VF limits voltage drop to <100 mV at 200 mA, preserving logic-level compatibility and reducing heat in sealed enclosures. |
Use Scenario: Voltage clamping on VBUS line to protect USB-C port controllers during hot-plug events. IC Role / Device Role / Timing Role: Fast-turn-on clamp limiting overshoot to <42 V during 100 ns transients. Use Value: 50 pF capacitance avoids signal integrity degradation on 10 Gbps USB3.2 Gen2x2 lanes while absorbing >10 A surge. |
| Industrial Sensor Node Power | Low-Power IoT Battery Charger |
Use Scenario: Input rectification for energy-harvesting boost converters powering wireless temperature sensors. IC Role / Device Role / Timing Role: Low-leakage AC-to-DC front-end enabling µA-level quiescent operation. Use Value: 30 µA IR at 40 V ensures <1 µW standby loss - extends 10-year battery life in sealed sensor housings. |
Use Scenario: Reverse-current blocking between Li-ion cell and charging IC in wearable medical devices. IC Role / Device Role / Timing Role: Prevents battery discharge through charger IC when input power is removed. Use Value: Sub-470 mV VF minimizes voltage loss across protection path, preserving 3.0 V minimum system brown-out threshold. |
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 NSS40050MUTBG | Same 40 V/500 mA rating but VF = 450–500 mV @ 500 mA; Rth(j-a) = 475 K/W (no Rth(j-sp) specified). | Lacks AEC-Q101 qualification; not recommended for automotive underhood use. | Select only for cost-sensitive industrial consumer designs where thermal margin exceeds 25 °C. |
| Vishay VSKY0540HM3/H | Higher IF = 1 A; VF = 490 mV @ 500 mA; Rth(j-a) = 320 K/W; AEC-Q101 qualified. | 0.95 mm height exceeds SOD323 footprint; requires PCB re-layout for 2.1 mm × 1.3 mm DFN1006 package. | Choose when higher surge current (15 A IFSM) is needed and board space permits larger footprint. |
Compared with NSS40050MUTBG and VSKY0540HM3/H, PMEG4005AEA-Q uniquely balances AEC-Q101 compliance, lowest VF in class, and SOD323 thermal interface - making it optimal for space-constrained automotive modules requiring <470 mV conduction loss and <90 K/W thermal path.
Availability
PMEG4005AEA-Q is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery clamps, industrial sensor nodes, and low-power IoT battery chargers requiring stable component supply across extended product lifecycles.
Supply support for PMEG4005AEA-Q 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 components and advanced packaging technologies.
This part belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for ultra-low forward voltage and AEC-Q101-compliant operation in space-constrained automotive and industrial power management systems.
FAQ
Is PMEG4005AEA-Q suitable for synchronous rectification in DC/DC converters?
No - it is a unidirectional Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. Its 420–470 mV VF makes it ideal for low-loss freewheeling or clamping in non-synchronous buck converters, but it lacks gate drive interface or bidirectional control logic required for synchronous operation.
What is the maximum allowable PCB copper area for the cathode pad to achieve Rth(j-sp) = 90 K/W?
The 90 K/W Rth(j-sp) value is measured with a 1 cm² tin-plated copper pad on FR4. Increasing pad area beyond 1 cm² yields diminishing returns; doubling to 2 cm² improves Rth by only ~10 K/W. No thermal vias are required to meet this spec under rated conditions.
Does the guard ring affect the device's capacitance or switching speed?
Yes - the guard ring slightly increases junction capacitance (Cd = 43–50 pF) versus non-guarded Schottkys, but this remains well below 100 pF and does not degrade switching performance in ≤2 MHz DC/DC applications. The trade-off enables reliable 40 V operation in the same SOD323 footprint.
Can PMEG4005AEA-Q replace PMEG4005EJ in existing designs?
Yes - both share identical electrical specs and SOD323 package, but PMEG4005AEA-Q adds AEC-Q101 qualification and enhanced surge robustness via optimized guard ring layout. No layout or firmware changes are needed; it is a drop-in upgrade for automotive applications requiring qualification evidence.
PMEG4005AEA-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:
- 470 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- 43pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C
PMEG4005AEA-QX FAQ
1.How can I place an order for PMEG4005AEA-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005AEA-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 PMEG4005AEA-QX reliable?
The price and inventory of PMEG4005AEA-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005AEA-QX is usually 5 days.
3.What payment methods are accepted for PMEG4005AEA-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005AEA-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005AEA-QX?
PMEG4005AEA-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005AEA-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 PMEG4005AEA-QX?
For technical support, including PMEG4005AEA-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005AEA-QX requirements.
6.How does Aetrix verify that PMEG4005AEA-QX is sourced from the original manufacturer or authorized distributors?
All PMEG4005AEA-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 PMEG4005AEA-QX meets industry standards.
7.What is the process for return or replacement of PMEG4005AEA-QX?
All PMEG4005AEA-QX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005AEA-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 PMEG4005AEA-QX part is unused and in its original packaging.
Return procedure for PMEG4005AEA-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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