Nexperia USA Inc. PMEG4030CERX

Overview

PMEG4030CERX from Nexperia is a planar Schottky barrier rectifier in CFP3 (SOD123W) surface-mount package, designed for low-voltage, high-efficiency DC-to-DC conversion and reverse polarity protection. It delivers 3 A average forward current at ≤160 °C solder point temperature, 40 V reverse voltage rating, and typ. 560 mV forward voltage at 3 A and 25 °C junction temperature - enabling compact, thermally efficient power stage designs in space-constrained applications.

For engineers reviewing the PMEG4030CERX datasheet, PMEG4030CERX pinout, PMEG4030CERX application, or PMEG4030CERX equivalent, key selection criteria include its low VF (560–630 mV), low thermal resistance to solder point (130 K/W), 50 A non-repetitive peak surge capability, and SOD123W footprint compatibility with standard FR4 PCB layouts.

Technical Context

This Schottky diode uses a planar silicon die with clip-bond interconnect to minimize parasitic inductance and enhance thermal transfer from junction to cathode tab. Its low reverse recovery time (4.5 ns step, 5.5 ns ramp) and negligible Qrr (2.1 nC) eliminate switching losses in high-frequency SMPS topologies up to several MHz.

The device operates across -40 °C to +175 °C junction temperature range, with reverse leakage tightly controlled (10–50 µA at 25 °C, 6–25 mA at 125 °C), ensuring stable performance in automotive under-hood and industrial ambient environments where thermal cycling is severe.

Key Specifications

Pinout & Package

Encapsulated in CFP3 (SOD123W) plastic SMD package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode-marked with bar. Optimized for reflow and wave soldering per IPC-7351B footprint (cathode pad: 1.4 mm × 2.1 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EPH04-M3/86A and NSR30C40NXT5G, PMEG4030CERX offers best-in-class thermal density (130 K/W Rth(j-sp) in smallest footprint), making it optimal for ultra-compact, high-power-density DC-DC modules where board space and thermal management are co-constrained.

Availability

PMEG4030CERX is available at Aetrix Electronics and suitable for DC-DC converter output rectification, reverse polarity protection, SMPS auxiliary supply, and low-power standby circuit applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for PMEG4030CERX 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in Schottky diodes, MOSFETs, and ESD protection solutions.

This device belongs to Nexperia's CFPx Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in space- and thermal-constrained applications such as consumer adapters, automotive ECUs, and industrial SMPS.

FAQ

What is the maximum allowable solder point temperature for continuous operation?

The PMEG4030CERX supports continuous operation with solder point temperature (Tsp) up to 160 °C when delivering its rated 3 A average forward current, as validated in the datasheet's Fig. 10. Exceeding this limit risks accelerated degradation of the clip bond and thermal interface.

Does this diode require a heatsink on standard FR4 PCB?

No external heatsink is required. With a 1 cm² cathode copper pad, the device achieves 1.15 W power dissipation capability (Rth(j-sp) = 130 K/W). At 3 A and 560 mV VF, power loss is 1.68 W - requiring only that the pad be implemented per Nexperia's recommended footprint (Fig. 16) for reliable thermal performance.

Can PMEG4030CERX replace a standard PN junction diode in an existing 12 V input circuit?

Yes - provided the original diode's VR ≥ 40 V and IF(AV) ≤ 3 A. The Schottky's lower VF reduces conduction loss and heat generation, but note its higher reverse leakage (µA vs. nA for PN diodes), which may affect ultra-low-power sleep modes if not accounted for in system-level leakage budgeting.

Is the marking 'N8' sufficient to identify PMEG4030CERX on the PCB?

Yes - per Table 4 of the datasheet, 'N8' is the official top-side marking for PMEG4030CERX. The cathode is indicated by a bar adjacent to pin 1, confirming orientation during automated optical inspection (AOI) and manual rework.