Nexperia USA Inc. PMEG40T30EPX

Overview

PMEG40T30EPX from Nexperia is a 40 V, 3 A Trench MEGA Schottky barrier rectifier in CFP5 (SOD128) package, designed for low-voltage DC-to-DC conversion and freewheeling paths where low forward voltage (450–525 mV at 3 A, 25 °C) and low reverse leakage (8–28 µA at 40 V, 25 °C) are critical. It employs clip-bonding for high power capability and operates up to 175 °C junction temperature.

For engineers reviewing the PMEG40T30EPX datasheet, PMEG40T30EPX pinout, PMEG40T30EPX application, or PMEG40T30EPX equivalent, key selection criteria include forward voltage vs. temperature behavior, thermal resistance to solder point (12 K/W), reverse recovery time (14–21 ns), and compatibility with reflow/wave soldering on FR4 PCBs with standard or enhanced cathode pad layouts.

Technical Context

This Schottky rectifier uses Trench MEGA technology to achieve low VF and low IR simultaneously-enabling high-efficiency operation in compact power stages. Its 2-pin CFP5 package features a thermally optimized cathode tab directly bonded to PCB copper, reducing R_th(j-sp) to 12 K/W.

The device exhibits fast step- and ramp-mode reverse recovery (21 ns and 14 ns respectively) and negligible minority-carrier storage, making it suitable for high-frequency switching topologies. Diode capacitance is 240–560 pF (1–10 V reverse bias), supporting stable snubberless operation in synchronous buck and flyback freewheeling roles.

Key Specifications

Pinout & Package

Encapsulated in CFP5 (SOD128) surface-mount plastic package: 3.8 mm × 2.6 mm × 1.0 mm body, 4.0 mm pitch, flat lead profile optimized for automated assembly and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EYH02-M3/54 and NSR30C40NXT5G, PMEG40T30EPX delivers the lowest thermal resistance to solder point (12 K/W), enabling higher sustained current on minimal PCB copper, while matching or exceeding VF and IR performance without automotive overhead.

Availability

PMEG40T30EPX is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, reverse polarity protection, and low-voltage rectification requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for PMEG40T30EPX 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 industrial, consumer, and communications markets with scalable manufacturing and rigorous quality control.

PMEG40T30EPX belongs to Nexperia's Trench MEGA Schottky rectifier product line, engineered specifically for high-efficiency, low-profile power conversion in space-constrained applications such as USB PD adapters, PoE injectors, and portable instrumentation.

FAQ

What is the maximum continuous forward current at 100 °C ambient temperature?

At T_amb = 100 °C on an FR4 PCB with 1 cm² cathode pad, PMEG40T30EPX supports 2.3 A average forward current (δ = 0.5, f = 20 kHz). This derating reflects thermal limits imposed by R_th(j-a) = 120 K/W under those conditions, as confirmed in Figure 9 of the datasheet.

Does PMEG40T30EPX support wave soldering, and what footprint is required?

Yes - PMEG40T30EPX is qualified for both reflow and wave soldering. For wave soldering, the recommended footprint (Figure 17) uses 4.2 mm × 2.3 mm solder lands with 3.65 mm × 3.5 mm dummy tracks and 10.2 mm overall length to ensure complete wetting of the cathode tab and mechanical stability.

How does forward voltage change with junction temperature?

V_F decreases with rising temperature: at 3 A, it drops from 505 mV at −40 °C to 370 mV at 125 °C and remains stable up to 175 °C. This negative temperature coefficient improves thermal stability in parallel configurations and reduces conduction loss at elevated operating temperatures.

Is PMEG40T30EPX suitable for automotive applications?

No - this part is explicitly non-automotive qualified per Revision History (v.2, April 2023). It lacks AEC-Q101 qualification, automotive-grade testing, and guaranteed PPAP documentation. For automotive use, Nexperia recommends PMEG40T30EPQ (Q101-qualified variant) or alternatives like NSR30C40NXT5G.