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Nexperia USA Inc. PMEG4005AEAZ
- Part No.:
- PMEG4005AEAZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PMEG4005AEAZ.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:121,555
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Product details
Overview
PMEG4005AEAZ 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 as low as 30 µA at 40 V - deployed in low-voltage DC/DC converters and polarity protection circuits.
For engineers reviewing the PMEG4005AEAZ datasheet, PMEG4005AEAZ pinout, PMEG4005AEAZ application, or PMEG4005AEAZ equivalent, key selection criteria include ultra-low VF performance, SOD323 package thermal resistance (Rth(j-sp) = 210 K/W), surge current capability (IFSM = 10 A), and cathode-marked anode-cathode polarity alignment in space-constrained power rails.
Technical Context
This Schottky diode uses a planar die structure with an integrated guard ring to suppress edge breakdown under high electric field stress, enabling stable operation up to 150 °C junction temperature. Its low-barrier metal-semiconductor junction delivers fast switching (no minority carrier storage) and minimal reverse recovery charge.
The device operates without reverse recovery time (trr ≈ 0 ns) due to majority-carrier conduction, making it suitable for high-frequency rectification where switching losses must be minimized. Thermal performance is defined relative to solder-point (Rth(j-sp) = 210 K/W) and ambient (Rth(j-a) = 450 K/W) on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum blocking voltage before avalanche breakdown; sets upper limit for input rail clamping or flyback snubbing. |
| Forward Current (IF) | 0.5 A continuous - Sustained DC current handling capacity; defines usable load range in point-of-load regulators. |
| Forward Voltage (VF) | 420 mV typ. @ 500 mA - Directly reduces conduction loss in low-VIN paths; enables >95% efficiency in 3.3 V → 1.8 V buck stages. |
| Reverse Leakage (IR) | 30 µA max. @ 40 V - Low standby power penalty in always-on battery-backed circuits or voltage clamp hold-off. |
| Diode Capacitance (Cd) | 43 pF typ. @ 1 V - Limits high-frequency noise coupling and EMI in switching node routing near IC pins. |
| Junction-to-Solder Thermal Resistance | 210 K/W - Enables direct thermal path to PCB copper; supports 0.5 A operation without heatsink on 1 cm² cathode pad. |
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; marking bar denotes cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to higher-potential node in reverse-biased clamping; carries full forward current return path; marked side of package. |
| 2 | Anode (A) | Connected to lower-potential node during conduction; serves as input for polarity protection or output for freewheeling paths. |
Key Features
| Feature | Design Value |
|---|---|
| Very low forward voltage | VF = 420 mV @ 500 mA - Reduces power dissipation by >40% vs. comparable 0.5 A Si diodes in 3.3 V systems. |
| Integrated guard ring | Edge termination structure - Prevents premature voltage breakdown at die periphery under mechanical or thermal stress. |
| High surge current rating | IFSM = 10 A (8 ms) - Withstands inrush and transient overloads in USB-powered or hot-swap circuits. |
| Small SMD footprint | SOD323 package (1.7 × 1.25 mm) - Fits dense layouts in wearables and IoT sensors where board area is constrained to <2 mm² per diode. |
Applications
| USB Power Input Protection | DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and peripherals. IC Role / Device Role / Timing Role: Unidirectional current gate placed between VBUS and system input rail. Use Value: 40 V rating covers USB PD 3.0 transients; 420 mV VF limits voltage drop to <2% at 500 mA, preserving regulation margin. |
Use Scenario: Synchronous rectifier replacement in 1 MHz buck converters powering FPGA I/O banks. IC Role / Device Role / Timing Role: Freewheeling path during high-side FET off-time; zero-recovery behavior eliminates switching loss spikes. Use Value: 43 pF capacitance minimizes ringing at 1 MHz; 210 K/W Rth(j-sp) allows sustained 0.5 A without derating on 4-layer boards. |
| Inverse Polarity Clamp for Sensors | Low-Power Rail Clamping |
Use Scenario: Protecting analog front-end inputs of industrial temperature sensors exposed to field wiring errors. IC Role / Device Role / Timing Role: Reverse-biased shunt clamp limiting input to −0.42 V during −5 V misconnection. Use Value: 30 µA leakage at 40 V ensures <1 µW standby drain; guard ring prevents latch-up under ESD stress. |
Use Scenario: Clamping 3.3 V logic rail against 5 V backfeed from auxiliary modules in smart meters. IC Role / Device Role / Timing Role: Forward-conducting clamp activated when auxiliary rail exceeds main rail by >420 mV. Use Value: Precise 420 mV turn-on threshold enables clean rail isolation without resistive divider overhead or active circuitry. |
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 NSS40003MX | Same 40 V / 0.5 A rating but VF = 450 mV typ. @ 500 mA; Rth(j-a) = 470 K/W. | Higher conduction loss and worse thermal dissipation; less suitable for 0.5 A continuous in compact enclosures. | Select only if NSS40003MX is already qualified in legacy BOM and layout cannot accommodate thermal pad rework. |
| Vishay VS-40CPH05-M3 | TO-220AC package; 40 V / 5 A rating; VF = 490 mV @ 5 A - not scaled to 0.5 A operation. | Requires 10× board area; intended for high-current industrial supplies, not space-limited consumer electronics. | Use only when system-level surge requirements exceed 10 A or ambient temperatures exceed 125 °C with forced airflow. |
Compared with NSS40003MX and VS-40CPH05-M3, PMEG4005AEAZ provides optimal balance of ultra-low VF, SOD323 size, and validated 10 A surge robustness - making it the preferred choice for miniaturized 0.5 A rectification where thermal and layout constraints dominate.
Availability
PMEG4005AEAZ is available at Aetrix Electronics and suitable for USB power protection, DC/DC converter output rectification, and inverse polarity clamp circuits requiring stable component supply across production ramps and long-life designs.
Supply support for PMEG4005AEAZ 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, logic, and MOSFET solutions - headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
PMEG4005AEAZ belongs to Nexperia's precision Schottky rectifier product line, engineered specifically for ultra-low VF performance in space- and power-constrained portable and battery-operated systems.
FAQ
What is the maximum allowable junction temperature for PMEG4005AEAZ?
The absolute maximum junction temperature is 150 °C, as defined in IEC 60134 limiting values. Operation at this temperature requires strict thermal design - including use of the recommended 1 cm² cathode solder pad - and derating of forward current above 125 °C ambient per the thermal resistance curves in the datasheet.
Can PMEG4005AEAZ replace a standard silicon diode in a 3.3 V linear regulator output?
Yes - its 420 mV forward voltage reduces dropout by ~600 mV versus a typical 1 V Si diode, improving regulation headroom. However, reverse leakage (up to 100 µA at 40 V) is higher than silicon, so verify standby current impact in always-on applications before substitution.
Is the SOD323 package compatible with standard reflow profiles?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended footprint (Fig. 5) uses 0.5 mm × 0.6 mm solder lands with 0.6 mm spacing; peak temperature must not exceed 260 °C for ≤ 30 seconds to avoid package delamination or marking degradation.
Does PMEG4005AEAZ have automotive qualification?
No - this device is not AEC-Q101 qualified and is designated for industrial and consumer applications only. Nexperia explicitly states non-automotive qualification in the legal disclaimers; for automotive use, select the AEC-Q101 qualified PMEG4005AEX version instead.
PMEG4005AEAZ 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C (Max)
PMEG4005AEAZ FAQ
1.How can I place an order for PMEG4005AEAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG4005AEAZ 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 PMEG4005AEAZ reliable?
The price and inventory of PMEG4005AEAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG4005AEAZ is usually 5 days.
3.What payment methods are accepted for PMEG4005AEAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG4005AEAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG4005AEAZ?
PMEG4005AEAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG4005AEAZ 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 PMEG4005AEAZ?
For technical support, including PMEG4005AEAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG4005AEAZ requirements.
6.How does Aetrix verify that PMEG4005AEAZ is sourced from the original manufacturer or authorized distributors?
All PMEG4005AEAZ 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 PMEG4005AEAZ meets industry standards.
7.What is the process for return or replacement of PMEG4005AEAZ?
All PMEG4005AEAZ units undergo pre-shipment inspection (PSI). If there is an issue with PMEG4005AEAZ, 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 PMEG4005AEAZ part is unused and in its original packaging.
Return procedure for PMEG4005AEAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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