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Nexperia USA Inc. PMEG4005AEA/8X
- Part No.:
- PMEG4005AEA/8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PMEG4005AEA/8X.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,365
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Product details
Overview
PMEG4005AEA from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, rated at 40 V reverse voltage and 0.5 A continuous forward current, featuring a typical forward voltage of 420 mV at 500 mA and reverse leakage under 100 µA at 40 V - deployed in low-voltage DC/DC converters and polarity protection circuits.
For engineers reviewing the PMEG4005AEA datasheet, PMEG4005AEA pinout, PMEG4005AEA application, or PMEG4005AEA equivalent, key selection criteria include ultra-low VF performance, SOD323 footprint compatibility, thermal resistance to solder point (90 K/W), and surge current capability up to 10 A non-repetitive peak.
Technical Context
This Schottky diode uses a planar junction structure with an integrated guard ring to enhance ruggedness against electrical overstress and improve reliability under transient conditions. Its low barrier height enables sub-470 mV forward voltage at rated current while maintaining reverse blocking up to 40 V.
Thermal design is constrained by junction-to-solder-point resistance of 90 K/W - optimized for cathode-tab thermal coupling on FR4 PCBs - and requires attention to reverse power dissipation at elevated temperatures due to inherent thermal runaway risk in Schottky devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - maximum DC or repetitive peak reverse bias before breakdown; defines safe operating window in clamping and flyback applications. |
| Forward Current (IF) | 0.5 A continuous - steady-state conduction limit; supports compact power stages in space-constrained portable electronics. |
| Forward Voltage (VF) | 420–470 mV at 500 mA - enables >90% efficiency in 3.3 V or 5 V buck converter outputs with minimal conduction loss. |
| Reverse Current (IR) | 30–100 µA at 40 V - low leakage preserves battery life in always-on low-power systems and reduces standby loss. |
| Diode Capacitance (Cd) | 43–50 pF at 1 V - limits high-frequency switching noise and EMI in MHz-range DC/DC controllers. |
| Junction-to-Solder-Point Rth | 90 K/W - enables direct thermal path from cathode pad to PCB copper, critical for sustained 0.5 A operation without derating. |
| Non-Repetitive Peak Current (IFSM) | 10 A at 8 ms - withstands inrush and fault transients in USB-powered or hot-swap circuits. |
Pinout & Package
Encapsulated in SOD323 (SC-76) package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, surface-mount plastic case with cathode-marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative output terminal; marked by bar; primary thermal path to PCB via cathode pad; connects to ground or return rail in rectification/clamping. |
| 2 | Anode (A) | Positive input terminal; accepts input voltage source or switched node; carries full forward current during conduction phase. |
Key Features
| Feature | Design Value |
|---|---|
| Very low forward voltage | 420 mV typ. at 500 mA - reduces conduction loss by ≥40% vs. standard silicon diodes, directly improving light-load efficiency. |
| Integrated guard ring | Planar structure with embedded guard ring - increases ruggedness against dv/dt-induced failure and improves long-term reliability in noisy environments. |
| High surge current rating | 10 A IFSM (8 ms) - sustains repeated inrush events in battery-charged systems without degradation or parametric shift. |
| Ultra-compact SMD package | SOD323 footprint (1.7 × 1.25 mm) - enables placement in dense power IC layouts where board area is limited to <2 mm² per diode. |
Applications
| USB Power Delivery Clamp | Low-Voltage DC/DC Output Rectifier |
|---|---|
Use Scenario: Clamping reverse-polarity transients on USB-C VBUS lines during plug insertion or hot-swap events. IC Role / Device Role / Timing Role: Polarity protection diode placed between connector and system input rail. Use Value: 40 V VR rating covers USB PD 3.0 max 48 V negotiation; 10 A IFSM absorbs plug-in spikes without latch-up or failure. |
Use Scenario: Synchronous rectifier replacement in 3.3 V/5 V buck converters for wearables and IoT sensors. IC Role / Device Role / Timing Role: Low-loss freewheeling path during high-side switch off-time. Use Value: 420 mV VF minimizes conduction loss at 500 mA load, extending battery runtime by up to 8% over comparable 550 mV diodes. |
| Inverse Polarity Protection | Low-Power Backup Supply Selector |
Use Scenario: Preventing damage from incorrect battery insertion in coin-cell–powered medical monitors. IC Role / Device Role / Timing Role: Series-blocking diode in main power path with cathode toward load. Use Value: 30 µA max IR at 40 V ensures <1 µW standby loss - critical for multi-year shelf life in sealed diagnostic devices. |
Use Scenario: OR-ing two independent 3 V sources (e.g., primary battery + supercap backup) in asset trackers. IC Role / Device Role / Timing Role: Low-VF path selector enabling seamless switchover without voltage droop. Use Value: Sub-470 mV VF ensures ≤150 mV drop at 300 mA, preserving regulated output stability during source transition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-40T1G (ON Semiconductor) | Same 40 V VR, 0.5 A IF, but VF = 450–500 mV at 500 mA; higher IR (150 µA max). | Less suitable for ultra-low-leakage battery backup; acceptable in cost-sensitive consumer DC/DC. | Prefer when BOM cost is prioritized over leakage-critical runtime. |
| SD103AW-TP (Micro Commercial Components) | Lower VR (40 V), same IF, but VF = 480–550 mV; Cd = 60 pF; no guard ring. | Higher switching loss and reduced dv/dt immunity; not recommended for noisy industrial environments. | Select only for non-critical, low-frequency (<100 kHz) rectification with relaxed EMI requirements. |
Compared with RB520S-40T1G and SD103AW-TP, PMEG4005AEA delivers the lowest VF and tightest IR spec in SOD323, making it optimal for high-efficiency, low-leakage, and electrically harsh applications - especially where thermal coupling to PCB and transient robustness are design constraints.
Availability
PMEG4005AEA is available at Aetrix Electronics and suitable for USB power delivery clamp circuits, low-voltage DC/DC output rectification, inverse polarity protection, and low-power backup supply selectors requiring stable component supply across production lifecycles.
Supply support for PMEG4005AEA 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, serving automotive, industrial, and consumer markets with rigorous qualification and scalable manufacturing.
PMEG4005AEA belongs to Nexperia's low-VF Schottky rectifier product line, engineered specifically for space-constrained, high-efficiency power conversion and protection in portable and battery-powered electronics.
FAQ
What is the maximum junction temperature for PMEG4005AEA?
The absolute maximum junction temperature is 150 °C, as defined in IEC 60134 limiting values. Operation above this temperature risks permanent parametric shift or catastrophic failure. Derating is required above 85 °C ambient when dissipating >125 mW, based on Rth(j-a) = 450 K/W in free air.
Is PMEG4005AEA suitable for automotive applications?
No - PMEG4005AEA is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling, or humidity testing. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive systems is at the customer's sole risk and unsupported.
How does the guard ring improve reliability?
The integrated guard ring mitigates edge breakdown by controlling electric field distribution at the planar junction periphery, increasing resistance to transient overvoltage and improving long-term stability under repeated dv/dt stress - verified in Nexperia's accelerated life testing per JEDEC JESD22-A108.
What is the recommended reflow footprint for SOD323 mounting?
Nexperia specifies a reflow soldering footprint with 0.5 mm wide × 1.5 mm long solder lands (2×), 0.6 mm solder resist opening (2×), and 2.9 mm center-to-center spacing - detailed in Figure 5 of the datasheet to ensure mechanical strength and thermal transfer to the cathode pad.
PMEG4005AEA/8X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C (Max)
PMEG4005AEA/8X FAQ
1.How can I place an order for PMEG4005AEA/8X through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005AEA/8X 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/8X reliable?
The price and inventory of PMEG4005AEA/8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005AEA/8X is usually 5 days.
3.What payment methods are accepted for PMEG4005AEA/8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005AEA/8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005AEA/8X?
PMEG4005AEA/8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005AEA/8X 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/8X?
For technical support, including PMEG4005AEA/8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005AEA/8X requirements.
6.How does Aetrix verify that PMEG4005AEA/8X is sourced from the original manufacturer or authorized distributors?
All PMEG4005AEA/8X 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/8X meets industry standards.
7.What is the process for return or replacement of PMEG4005AEA/8X?
All PMEG4005AEA/8X units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005AEA/8X, 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/8X part is unused and in its original packaging.
Return procedure for PMEG4005AEA/8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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