Nexperia USA Inc. PMEG4002EB-QX

Overview

PMEG4002EB-QX from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, rated for 200 mA forward current and 40 V reverse voltage, featuring a typical forward voltage of 520 mV at 200 mA and 25 °C, housed in an ultra-small SOD523 (SC-79) package; used for low-voltage rectification and inverse polarity protection in automotive power rails.

For engineers reviewing the PMEG4002EB-QX datasheet, PMEG4002EB-QX pinout, PMEG4002EB-QX application, or PMEG4002EB-QX equivalent, key selection criteria include its AEC-Q101 qualification, 520–600 mV VF at full rated current, 0.5 µA IR at 25 V, 20 pF capacitance at 1 V, and thermal resistance of 450 K/W in free air - critical for space-constrained, thermally sensitive automotive DC-DC stages.

Technical Context

This Schottky diode employs a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its low VF stems from optimized metal-semiconductor interface design, enabling high conduction efficiency without PN-junction recovery losses.

Thermal performance is defined by junction-to-ambient resistance of 450 K/W on FR4 PCB with single-sided copper, requiring careful layout for automotive ambient temperatures up to 150 °C; reverse leakage remains below 0.5 µA at 25 V and 25 °C, supporting low-power standby modes.

Key Specifications

Pinout & Package

Encapsulated in SOD523 (SC-79), measuring 1.2 mm × 0.8 mm × 0.6 mm, with flat leads and cathode-marked top surface (bar marking).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with NSR0240HT1G and VSKY2401-G3, PMEG4002EB-QX uniquely combines AEC-Q101 qualification, guard ring protection, and SOD523 size - making it optimal for space-limited automotive modules where transient resilience and low VF are jointly required.

Availability

PMEG4002EB-QX is available at Aetrix Electronics and suitable for automotive reverse polarity protection, low-voltage DC-DC rectification, and ECU standby rail isolation requiring stable component supply across production lifecycles.

Supply support for PMEG4002EB-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 high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

This device belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for automotive power management where low VF, small footprint, and transient robustness are mandatory.

FAQ

Is PMEG4002EB-QX suitable for reflow soldering?

Yes, PMEG4002EB-QX is qualified for lead-free reflow soldering per JEDEC J-STD-020. The recommended profile uses peak temperature of 260 °C for ≤30 seconds, with preheat ramp rate ≤3 °C/s and cooling rate ≥1 °C/s. Footprint dimensions and solder paste stencil design must follow Nexperia's SC-79 land pattern in Figure 5 of the datasheet.

What does the 'Q' suffix indicate in PMEG4002EB-QX?

The 'Q' suffix denotes AEC-Q101 qualification, confirming that the device has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling. The 'X' in PMEG4002EB-QX is a packaging variant indicator consistent with Nexperia's internal ordering nomenclature for tape-and-reel delivery.

Can PMEG4002EB-QX replace a standard silicon diode in existing designs?

Yes, provided VR and IF ratings are compatible and layout accommodates SOD523 footprint. Its lower VF reduces conduction loss and heat generation, but reverse leakage is higher than silicon - verify standby current budgets. No circuit modification is needed for basic rectification or polarity protection roles.

How is the cathode identified on the PMEG4002EB-QX package?

The cathode is marked by a visible bar on the top surface of the SOD523 package, aligned with Pin 1. This matches the pinning diagram in Table 2: Pin 1 = K (cathode), Pin 2 = A (anode). Visual inspection under 10× magnification confirms orientation prior to placement.