Nexperia USA Inc. PMEG4005ESFCYL

Overview

PMEG4005ESFCYL from Nexperia is a 40 V, 0.5 A low forward-voltage Schottky barrier rectifier in a DSN0603-2 (SOD962-2) chip-scale package, designed for ultra-compact DC-to-DC conversion and mobile LED backlighting. It delivers typ. VF = 315 mV at 10 mA, IR = 0.24 µA at 10 V, and trr = 1.28 ns - enabling high-efficiency, ultra-high-speed switching in space-constrained portable power rails.

For engineers reviewing the PMEG4005ESFCYL datasheet, PMEG4005ESFCYL pinout, PMEG4005ESFCYL application, or PMEG4005ESFCYL equivalent, key selection criteria include forward voltage drop under light-load conditions, reverse leakage at elevated temperature, thermal resistance to solder point (Rth(j-sp) = 40 K/W), and compatibility with reflow-soldered 0.6 mm × 0.3 mm footprints on FR4 or ceramic PCBs.

Technical Context

This MEGA Schottky rectifier uses a planar silicon die with integrated guard ring for robust ESD and surge stress protection. Its ultra-low VF stems from optimized metal-semiconductor interface design, not process scaling alone - confirmed by VF = 315 mV (typ.) at IF = 10 mA and 750 mV (typ.) at IF = 500 mA.

The device exhibits negligible reverse recovery (trr = 1.28 ns) due to majority-carrier conduction, eliminating minority-carrier storage delay. Its 0.3 mm typical package height and 0.6 mm × 0.3 mm body size enable placement beneath camera modules or near battery connectors in smartphones and wearables.

Key Specifications

Pinout & Package

DSN0603-2 (SOD962-2) is a leadless, two-terminal chip-scale package with 0.3 mm typical height and top-side marking bar indicating cathode. Anode and cathode terminals are exposed copper pads on the bottom surface, compatible with standard reflow profiles per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB050M-30 and NSR0530HT1G, PMEG4005ESFCYL uniquely balances 40 V rating, 315 mV VF, and guard ring reliability in the smallest possible footprint - making it optimal for next-gen mobile and wearable power designs where size, efficiency, and field robustness are co-constrained.

Availability

PMEG4005ESFCYL is available at Aetrix Electronics and suitable for mobile LED backlighting, USB-C power path protection, wearable sensor power rails, and IoT node buck converter outputs requiring stable component supply across high-mix, low-volume production runs.

Supply support for PMEG4005ESFCYL 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, with leadership in automotive-qualified and industrial-grade components.

This part belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for ultra-compact, high-efficiency DC-to-DC conversion in portable and battery-powered electronics - prioritizing low VF, low IR, and mechanical ruggedness in CSP formats.

FAQ

What is the maximum continuous forward current for PMEG4005ESFCYL on a standard FR4 PCB?

The maximum average forward current is 0.5 A when mounted on a standard FR4 PCB with single-sided copper and tin-plated footprint, at ambient temperature ≤95 °C and duty cycle δ = 0.5 at 20 kHz. Derating is required above 95 °C ambient or with smaller copper areas.

Does PMEG4005ESFCYL require a thermal pad on the PCB for reliable operation?

Yes - for full 0.5 A rating, Nexperia specifies 1 cm² copper pads for both anode and cathode on FR4. Without extended copper, the device is limited to 0.2 A average current due to Rth(j-a) = 310 K/W in free air and thermal saturation of the small CSP body.

How does the integrated guard ring improve reliability in portable applications?

The guard ring mitigates edge breakdown caused by mechanical stress (e.g., board flex during smartphone bending) and moisture ingress. It is validated per IEC 60749-28 for humidity robustness and extends lifetime under repeated thermal cycling - critical for devices subjected to daily pocket carry and temperature swings.

Can PMEG4005ESFCYL be used in place of a standard 1N5817 in a 5 V supply?

No - while both are Schottky rectifiers, PMEG4005ESFCYL is rated for 40 V reverse voltage but limited to 0.5 A average current and requires reflow-compatible micro-footprint assembly. The 1N5817 handles 1 A and uses through-hole TO-220 packaging; direct substitution would require PCB redesign and derating analysis.