Nexperia USA Inc. BAT854SW,115

Overview

BAT854SW,115 from Nexperia is a dual Schottky barrier diode in SOT323 (SC-70) package, rated for 40 V reverse voltage and 200 mA forward current per diode, with 550 mV forward voltage at 100 mA and 0.5 µA reverse leakage at 25 V. It integrates a guard ring for stress protection and is AEC-Q101 qualified for automotive use.

For engineers reviewing the BAT854SW,115 datasheet, BAT854SW,115 pinout, BAT854SW,115 application, or BAT854SW,115 equivalent, key selection criteria include low VF for efficiency-critical hand-held power rails, low IR for signal integrity in clamping circuits, dual common-cathode/anode configuration for compact bidirectional protection, and thermal resistance of 625 K/W on FR4 PCB.

Technical Context

This dual Schottky diode features a planar structure with integrated guard ring to suppress edge breakdown under transient stress. Its two diodes share terminal 3 (K1/A2), enabling common-cathode (pins 1–3) and common-anode (pins 2–3) configurations within one package.

Designed for ultra-high-speed switching, it delivers 20 pF capacitance at 1 V reverse bias and 1 MHz, with VF ranging from 200 mV (IF = 0.1 mA) to 550 mV (IF = 100 mA), supporting low-power rail steering and fast transient suppression in space-constrained layouts.

Key Specifications

Pinout & Package

Encapsulated in SOT323 (SC-70), a 3-lead surface-mount plastic package measuring 2.0 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch and tin-plated copper footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky barrier dual diode applications.

Compared with NSS40201MR6T1G and VS-2EDH02-M3/84A, BAT854SW,115 uniquely balances ultra-low IR (0.5 µA), compact dual-diode integration in SOT323, and AEC-Q101 qualification-making it optimal for space- and reliability-constrained automotive and portable electronics where leakage and footprint are primary constraints.

Availability

BAT854SW,115 is available at Aetrix Electronics and suitable for USB port protection, automotive sensor interface, and hand-held device power rail steering requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.

Supply support for BAT854SW,115 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 core expertise in Schottky diodes, MOSFETs, and ESD protection solutions.

The BAT854SW belongs to Nexperia's AEC-Q101-qualified Schottky diode family, engineered specifically for automotive and portable electronics demanding low VF, low IR, and robust transient immunity in miniaturized packages.

FAQ

What is the maximum junction temperature and how does it affect thermal design?

The BAT854SW,115 has a maximum junction temperature of 150 °C. With a thermal resistance of 625 K/W on standard FR4 PCB, dissipating 100 mW raises Tj by 62.5 °C above ambient. For reliable operation at 85 °C ambient, derate IF to ~150 mA to keep Tj ≤ 150 °C-verified via Figure 1 VF vs. IF curves at elevated temperatures.

Can BAT854SW,115 be used in reverse-biased ESD protection without external resistors?

Yes-its 40 V VR rating and guard ring structure allow direct placement between I/O line and VCC/GND without series resistors in Class 1B/2 ESD protection per IEC 61000-4-2. The 20 pF capacitance at 1 V ensures <1 ns RC time constant with typical PCB trace impedance, preserving signal bandwidth up to 100 MHz.

How does the shared pin (pin 3) configuration impact PCB layout routing?

Pin 3 serves as both cathode of D1 and anode of D2, enabling compact dual-direction clamping. Layout must avoid routing high-noise signals adjacent to pin 3, as it carries return current for both diodes. Use separate thermal pads for pins 1 and 2, and ensure pin 3 pad connects directly to solid ground or supply plane to minimize inductance during transient events.

Is BAT854SW,115 compatible with lead-free reflow profiles per JEDEC J-STD-020?

Yes-BAT854SW,115 is qualified for lead-free reflow with peak temperature up to 260 °C (per Figure 5 footprint). Its SOT323 package withstands 60-second exposure above 220 °C, matching standard Level 1 moisture sensitivity. No pre-bake required for dry-packed reels shipped in sealed moisture-barrier bags.