Nexperia USA Inc. PMEG4050EP,115

Overview

PMEG4050EP from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, rated at 40 V reverse voltage and 5 A average forward current in a SOD128 (CFP5) surface-mount package. It delivers low forward voltage (430–490 mV @ 5 A, 25 °C), high power capability via clip-bond technology, and supports reflow/wave soldering - used in high-efficiency DC-DC converters and SMPS output rectification.

For engineers reviewing the PMEG4050EP datasheet, PMEG4050EP pinout, PMEG4050EP application, or PMEG4050EP equivalent, key selection criteria include forward voltage drop at full load, thermal resistance to solder point (12 K/W), reverse leakage (≤300 µA @ 40 V), junction temperature limit (150 °C), and SOD128 footprint compatibility with high-density PCB layouts.

Technical Context

This Schottky rectifier uses a planar die structure with an integrated guard ring to improve ruggedness against transient overvoltage and ESD stress. Its clip-bond interconnect reduces parasitic inductance and enhances thermal conduction from the cathode tab.

Designed for low-loss unidirectional conduction, it operates with zero minority-carrier storage, enabling fast switching and minimal reverse recovery loss - critical in high-frequency (>20 kHz) SMPS topologies where efficiency and thermal management are constrained.

Key Specifications

Pinout & Package

The PMEG4050EP is housed in a SOD128 (CFP5) plastic surface-mount package: 3.8 mm × 2.6 mm × 1.0 mm body, 4 mm lead pitch, with flat leads optimized for automated assembly and thermal transfer. The cathode is marked by a bar on the device top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS5L40SF and RB055LAM-40, the PMEG4050EP uniquely balances 5 A continuous rating, 430–490 mV VF, 12 K/W Rth(j-sp), and SOD128 footprint - making it optimal for space-constrained, thermally demanding 40 V-output SMPS designs where both efficiency and manufacturability matter.

Availability

PMEG4050EP is available at Aetrix Electronics and suitable for server VRMs, USB-C PD adapters, industrial PLCs, and automotive BCMs requiring stable component supply, consistent parametric performance across production lots, and long-term sourcing continuity.

Supply support for PMEG4050EP 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 essential semiconductors - delivering high-performance, reliable diodes, MOSFETs, and logic devices for high-volume industrial and consumer applications.

The PMEG4050EP belongs to Nexperia's low-VF Schottky rectifier product line, engineered specifically for high-efficiency, high-power-density DC-DC conversion in computing, communications, and industrial power supplies.

FAQ

What is the maximum allowable solder point temperature for PMEG4050EP during reflow?

The device is qualified for standard Pb-free reflow per J-STD-020, with peak temperature up to 260 °C for ≤30 seconds. The cathode solder point must not exceed 260 °C to avoid delamination or bond integrity loss - verified using thermocouple measurement at the cathode tab center during profile validation.

Can PMEG4050EP replace a standard PN-junction rectifier in an existing 24 V SMPS design?

Yes - its 40 V VR rating exceeds typical 24 V bus transients (≤40 V), and 430–490 mV VF reduces conduction loss by ~65% versus a 1N5822. However, reverse leakage (up to 300 µA) is higher than PN diodes, so verify standby power compliance before substitution.

Does the guard ring affect the device's capacitance or switching speed?

No - the guard ring is a passive edge termination structure that does not alter the active junction area or depletion region. Measured diode capacitance remains 220 pF @ 10 V, and zero reverse recovery time is preserved, confirming unchanged high-frequency performance.

Is PMEG4050EP suitable for automotive applications requiring AEC-Q101 qualification?

No - this part is not AEC-Q101 qualified. Nexperia explicitly states in the legal disclaimers that non-automotive qualified products are not tested to automotive reliability standards. For automotive use, select the AEC-Q101 qualified variant PMEG4050EPZ.