Nexperia USA Inc. RB520CS3002LZ

Overview

RB520CS3002LZ from Nexperia is a 200 mA, 30 V AEC-Q101-qualified MEGA Schottky barrier rectifier in DFN1006-2 (SOD882) package, featuring low 330–450 mV forward voltage at 10 mA and ≤0.5 µA reverse leakage at 10 V. It serves as a compact, high-efficiency unidirectional current switch in space-constrained automotive and portable power rails.

For engineers reviewing the RB520CS3002LZ datasheet, RB520CS3002LZ pinout, RB520CS3002LZ application, or RB520CS3002LZ equivalent, key selection criteria include its ultra-low VF for minimal conduction loss, integrated guard ring for surge robustness, AEC-Q101 qualification for under-hood use, and thermal resistance of 395 K/W on FR4 PCB - critical for thermally sensitive DC-DC and reverse polarity protection designs.

Technical Context

This Schottky diode employs a planar MEGA structure with an integrated guard ring to suppress edge breakdown and improve reliability under repetitive voltage stress. Its low barrier height enables sub-450 mV forward drop while maintaining <0.5 µA IR at 10 V - a trade-off optimized for low-power, high-frequency rectification rather than high-voltage blocking.

The device operates within a −55 °C to 150 °C junction temperature range and delivers 200 mA average forward current under square-wave conditions (δ = 0.5, f = 20 kHz) on standard FR4 PCBs. Thermal performance is defined by three mounting configurations: R_th(j-a) = 395 K/W (standard footprint), 220 K/W (1 cm² cathode pad), and 145 K/W (ceramic Al₂O₃ substrate).

Key Specifications

Pinout & Package

Encapsulated in DFN1006-2 (SOD882), a leadless 1.0 mm × 0.6 mm × 0.35 mm surface-mount package with exposed cathode pad for thermal dissipation. The marking bar on top indicates cathode polarity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB520S30T2R and NSR0230HT1G, RB520CS3002LZ uniquely combines AEC-Q101 qualification, lowest thermal resistance in its size class, and sub-0.5 µA leakage - making it the sole option for long-life automotive sensors and ultra-low-power energy harvesting where both reliability and micropower integrity are mandatory.

Availability

RB520CS3002LZ is available at Aetrix Electronics and suitable for automotive body electronics, USB-C power path protection, wireless sensor node power management, and industrial IoT gateway DC-DC conversion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for RB520CS3002LZ 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 essential semiconductors - including logic, discretes, MOSFETs, and ESD protection devices - with manufacturing rooted in process discipline and automotive-grade quality systems.

RB520CS3002LZ belongs to Nexperia's MEGA Schottky rectifier product line, engineered specifically for space-constrained, high-efficiency power conversion in automotive and portable electronics where low VF, low IR, and AEC-Q101 compliance are non-negotiable.

FAQ

Is RB520CS3002LZ suitable for reflow soldering on standard FR4 PCBs?

Yes. The DFN1006-2 package is qualified for lead-free reflow per J-STD-020, with peak temperature up to 260 °C. Recommended footprint uses 0.3 mm wide × 0.9 mm long solder lands per terminal and a 0.7 mm × 1.3 mm thermal pad for cathode - matching Nexperia's Fig. 15 layout guidelines for optimal thermal and mechanical reliability.

What is the maximum pulsed forward current rating for RB520CS3002LZ?

The non-repetitive peak forward current (I_FSM) is 3 A for 8.3 ms half-sine pulses at T_j(init) = 25 °C. This rating supports inrush current limiting in hot-swap circuits and transient overcurrent events in automotive power distribution, provided thermal mass and duty cycle remain within datasheet-defined boundaries.

Does the guard ring in RB520CS3002LZ improve ESD robustness?

No. The integrated guard ring is designed exclusively for voltage stress protection - suppressing edge avalanche during repetitive reverse-bias transients like load dump. ESD robustness (HBM) is rated at 8 kV per JESD22-A114, achieved via process-level junction design, not guard ring functionality.

Can RB520CS3002LZ replace a standard 1N5819 in existing designs?

Only with layout revision. While electrically compatible (30 V VR, 200 mA IF(AV)), RB520CS3002LZ uses DFN1006-2 (0.6 mm pitch), whereas 1N5819 uses DO-41 or SOD-123. Direct substitution requires footprint redesign and thermal validation - especially critical given its 395 K/W R_th(j-a) versus ~100 K/W for larger packages.