Nexperia USA Inc. PESD5V0U1BAF

Overview

PESD5V0U1BAF from Nexperia is a low-capacitance bidirectional ESD protection diode in SOD323 (SC-76) package, designed to protect one high-speed signal line against IEC 61000-4-2 level 4 ESD events (±10 kV contact), with 2.9 pF typical capacitance at 0 V, 5 nA max reverse leakage, and 5 V reverse standoff voltage - used in USB 2.0, HDMI, and SIM card interfaces.

For engineers reviewing the PESD5V0U1BAF datasheet, PESD5V0U1BAF pinout, PESD5V0U1BAF application, or PESD5V0U1BAF equivalent, key selection criteria include clamping voltage under 8 kV HBM, sub-3 pF capacitance for <480 Mbps data integrity, dual-cathode configuration for bidirectional transient suppression, and SOD323 footprint compatibility with high-density PCB layouts.

Technical Context

This device implements a dual-cathode, back-to-back diode structure enabling symmetrical clamping for both positive and negative transients on a single line. Its low 1.9 pF capacitance at VR = 5 V ensures minimal signal distortion on high-speed lines up to 1000 Mbps.

The 5.5 V minimum breakdown voltage and ≤100 Ω differential resistance support fast response to ESD pulses (tr ≤ 1 ns) while maintaining stable DC bias conditions across industrial temperature range (−55 °C to 150 °C).

Key Specifications

Pinout & Package

SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.3 mm pitch, 1.7 mm × 1.25 mm × 0.95 mm body height, cathode-marked end.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with NUP4105MR6T1G, PESD5V0U1BAF offers 30% lower capacitance and 30% smaller footprint for single-line protection; unlike VEML6030X01, it provides dedicated, validated ESD clamping without optical functionality or performance trade-offs.

Availability

PESD5V0U1BAF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS line safeguarding, and SIM card slot ESD hardening requiring stable component supply and consistent SOD323 packaging.

Supply support for PESD5V0U1BAF 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 headquartered in Nijmegen, Netherlands, specializing in high-volume production of essential semiconductors including ESD protection, logic, MOSFETs, and bipolar transistors.

PESD5V0U1BAF belongs to Nexperia's ESD protection diode product line, engineered specifically for high-speed digital interfaces where low capacitance, precise clamping, and ultra-low leakage are mandatory for signal fidelity and system reliability.

FAQ

What is the maximum clamping voltage of PESD5V0U1BAF under IEC 61000-4-2 8 kV contact discharge?

The clamping voltage is not explicitly specified in the datasheet, but typical V_CL at 1 A TLP is ≤12 V for positive/negative transients. This value is derived from the V-I curve (Fig. 3), where the device enters low-impedance conduction above 5.5 V breakdown and sustains <12 V across 1 A peak current, ensuring safe operation for 3.3 V and 5 V I/O structures.

Can PESD5V0U1BAF be used for unidirectional signal lines?

Yes - though optimized for bidirectional use, it functions as a symmetric clamp across any two points. For unidirectional lines referenced to ground, connect Pin 1 to the signal and Pin 2 to ground; the dual-cathode architecture still provides effective protection against both polarities of transient coupling through parasitic paths.

Is PESD5V0U1BAF automotive qualified?

No - the revision history explicitly states this device was changed to non-automotive qualification in v.2 (2023). It lacks AEC-Q200 stress testing and is not approved for use in automotive ECUs, infotainment systems, or ADAS sensors. Automotive alternatives carry "-Q" suffixes (e.g., PESD5V0U1BAF-Q).

How does the 1.9 pF capacitance at 5 V reverse bias affect high-speed signal integrity?

At 5 V bias, the 1.9 pF capacitance reduces capacitive loading on active signal lines, minimizing rise-time degradation and inter-symbol interference. For a 50 Ω system, this yields <0.1 dB insertion loss at 1 GHz - well within acceptable limits for USB 2.0, HDMI 1.4, and 100BASE-TX applications.