Nexperia USA Inc. PMEG4005ESFYL

Overview

PMEG4005ESFYL 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 PMEG4005ESFYL datasheet, PMEG4005ESFYL pinout, PMEG4005ESFYL application, or PMEG4005ESFYL equivalent, key selection criteria include its 0.3 mm profile, integrated guard ring for stress protection, thermal resistance of 105 K/W (junction-to-solder point), and compatibility with reflow soldering on FR4 or ceramic PCBs.

Technical Context

This MEGA Schottky rectifier uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its ultra-low VF and sub-nanosecond trr stem from optimized metal-semiconductor interface design and minimal junction capacitance (7 pF at 10 V).

Thermal performance is defined by mounting-dependent Rth(j-sp): 40 K/W when soldered to copper pads, enabling sustained 0.5 A average current at Tsp ≤ 140 °C. The device operates across −55 °C to 150 °C junction temperature, with reverse leakage tightly controlled up to 40 V.

Key Specifications

Pinout & Package

DSN0603-2 (SOD962-2) is a leadless, ultra-small chip-scale package measuring 0.6 × 0.3 × 0.3 mm with 0.3 mm typical height. It features two solderable terminals on the bottom surface and a top-side marking bar indicating cathode polarity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB521S-30T2R and NSR0530HT1G, PMEG4005ESFYL uniquely combines 40 V rating, 0.5 A capability, sub-320 mV VF, and 0.3 mm height - making it the sole option for compact, high-efficiency 5–36 V DC/DC outputs in modern mobile and wearable designs.

Availability

PMEG4005ESFYL is available at Aetrix Electronics and suitable for mobile LED backlighting, USB-C power delivery clamping, wearable sensor power rails, and IoT wireless module LDO inputs requiring stable component supply and long-term manufacturability.

Supply support for PMEG4005ESFYL 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 efficiency technologies - delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

PMEG4005ESFYL belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for ultra-compact, high-frequency power conversion in battery-powered consumer electronics where size, efficiency, and thermal performance are co-critical.

FAQ

What is the maximum allowable solder point temperature for PMEG4005ESFYL during reflow?

The device supports peak reflow temperatures up to 260 °C for ≤30 seconds per J-STD-020, with a maximum solder point temperature (Tsp) of 140 °C under continuous 0.5 A operation. Exceeding 140 °C at the solder joint during steady-state operation risks accelerated degradation of the Schottky contact and increased IR drift.

Does PMEG4005ESFYL require a thermal pad on the PCB for reliable 0.5 A operation?

Yes - sustained 0.5 A average current requires a minimum 1 cm² copper pad connected to each terminal (anode and cathode) on FR4 PCBs to achieve the specified Rth(j-sp) = 40 K/W. Without these pads, thermal resistance rises to 190 K/W, limiting usable current to ~0.2 A at Tamb = 70 °C.

How does the guard ring affect voltage derating in automotive load-dump conditions?

The integrated guard ring raises the effective breakdown threshold by suppressing edge-field concentration, allowing operation at 80% of VR (32 V) during 100 ms, 40 V load-dump transients - whereas non-guarded Schottkys of similar rating typically require ≥30% derating to avoid failure.

Can PMEG4005ESFYL be used in place of a standard 1N5817 in a 5 V adapter design?

No - while both are Schottky rectifiers, PMEG4005ESFYL's 0.5 A IF(AV) rating applies only with strict thermal management (e.g., 1 cm² pads), whereas the 1N5817 delivers 1 A in TO-220 packages with natural convection. Substituting without redesigning the PCB thermal layout will cause thermal runaway above 250 mA.