Nexperia USA Inc. PMEG4002ESFYL

Overview

PMEG4002ESFYL from Nexperia is a 40 V, 0.2 A planar MEGA Schottky barrier rectifier in a DSN0603-2 (SOD962-2) leadless chip-scale package, featuring typ. 315 mV forward voltage at 10 mA, 1.28 ns reverse recovery time, and integrated guard ring for stress protection-designed for ultra-compact DC-to-DC conversion in mobile LED backlight systems.

For engineers reviewing the PMEG4002ESFYL datasheet, PMEG4002ESFYL pinout, PMEG4002ESFYL application, or PMEG4002ESFYL equivalent, this device supports high-efficiency low-voltage rectification where space-constrained thermal performance and fast switching are critical design requirements.

Technical Context

This Schottky diode employs a planar MEGA structure with an integrated guard ring to enhance ruggedness against voltage transients and electrostatic stress-critical for reliability in portable power rails. Its ultra-thin 0.3 mm profile and copper-tin solder pad compatibility enable direct integration into fine-pitch mobile PCB layouts.

The device operates with zero minority-carrier storage, delivering sub-nanosecond trr and negligible reverse recovery charge-enabling >1 MHz switching in synchronous buck converters without snubber networks. Thermal resistance to solder point is 40 K/W when mounted on ceramic substrate, supporting continuous 0.2 A average current at ≤140 °C ambient.

Key Specifications

Pinout & Package

DSN0603-2 (SOD962-2) is a 2-terminal, leadless chip-scale package with 0.3 mm height, 0.6 mm × 0.3 mm body, and cathode-indicating marking bar. Mounting requires reflow-compatible solder pads per Figure 16 footprint (0.256 mm pad width, 0.676 mm center-to-center).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ROHM RB050M-30 and Vishay VSKY0520, PMEG4002ESFYL uniquely balances 40 V robustness, 0.3 mm height, guard ring protection, and sub-320 mV VF at microampere currents-making it optimal for space-constrained, battery-sensitive mobile power rails where reliability and efficiency coexist.

Availability

PMEG4002ESFYL is available at Aetrix Electronics and suitable for mobile LED backlight, USB-C power delivery clamp, and wearable battery charger applications requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for PMEG4002ESFYL 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 core expertise in Schottky technology, ESD-hardened packaging, and automotive-qualified power solutions.

This part belongs to Nexperia's MEGA Schottky rectifier product line-engineered specifically for ultra-compact, high-efficiency DC-DC conversion in portable electronics where thermal density, board area, and transient immunity are primary constraints.

FAQ

What is the maximum continuous forward current for PMEG4002ESFYL at 85 °C ambient?

At 85 °C ambient on an FR4 PCB with standard footprint, PMEG4002ESFYL supports 0.2 A average forward current (IF(AV)) with δ = 0.5 duty cycle and 20 kHz square wave, per Figure 9. Derating begins above 85 °C, reaching 0.12 A at 125 °C ambient.

Does PMEG4002ESFYL require a heatsink for 0.2 A DC operation?

No heatsink is required: with 1 cm² copper pads per terminal on FR4, Rth(j-a) is 105 K/W, resulting in ~21 °C junction-to-ambient rise at 0.2 A and 315 mV VF (63 mW dissipation). Junction temperature remains well below 150 °C even at 125 °C ambient.

How does the guard ring affect PCB layout requirements?

The integrated guard ring eliminates need for external creepage clearance beyond standard IPC-2221 Class B spacing. Layout follows standard 0201 solder mask-defined pads (0.256 mm width); no additional keep-out or slotting is required around the DSN0603-2 body.

Can PMEG4002ESFYL be used in place of a standard 1N5819 in a 5 V supply?

Yes-with caveats: its 40 V VR exceeds 1N5819's 40 V rating, but its 0.2 A IF(AV) is lower than 1N5819's 1 A. It is suitable only for loads ≤0.2 A; also requires reflow profile adjustment due to leadless CSP construction and absence of leads for thermal mass.