Nexperia USA Inc. PESD2USB5UX-TR

Overview

PESD2USB5UX-TR from Nexperia is a dual-channel unidirectional automotive ESD protection diode in SOT23 package, designed for high-speed data lines including USB 2.0 and HDMI. It delivers 5 V reverse standoff voltage, 3.3 V clamping at 8 A, 0.47 pF capacitance, and AEC-Q101 Grade 3 qualification for infotainment bus protection.

For engineers reviewing the PESD2USB5UX-TR datasheet, PESD2USB5UX-TR pinout, PESD2USB5UX-TR application, or PESD2USB5UX-TR equivalent, this page provides verified electrical parameters, validated dual-cathode/common-anode topology, automotive-grade transient immunity specs (IEC 61000-4-2 ±8 kV, ISO 10605 ±8 kV), and real-world use cases in USB/HDMI SerDes interfaces.

Technical Context

This device implements two independent unidirectional ESD clamps sharing a common anode (pin 3), enabling bidirectional transient suppression across two signal lines without ground reference dependency. Its low 0.47 pF capacitance ensures minimal signal integrity impact on 480 Mbps USB 2.0 and 1.65 Gbps HDMI TMDS channels.

The 3.3 V clamping voltage at 8 A TLP current and 0.3 Ω dynamic resistance provide fast, low-voltage overvoltage limiting during ESD events. Junction temperature rating up to 175 °C supports under-hood and display module deployment in automotive environments.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, optimized for automated placement and reflow soldering on dense PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel unidirectional ESD protection applications.

Compared with NUP4201MR6T1G and VEML3010, PESD2USB5UX-TR uniquely balances ultra-low capacitance (0.47 pF), dual-line SOT23 integration, and full AEC-Q101 Grade 3 compliance-making it the only option qualified for production automotive USB/HDMI SerDes protection without design compromise.

Availability

PESD2USB5UX-TR is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera interfaces, and digital instrument cluster designs requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for PESD2USB5UX-TR 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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.

This device belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for high-speed serial data bus immunity in infotainment and ADAS subsystems under AEC-Q101 stress conditions.

FAQ

What is the correct PCB layout practice for PESD2USB5UX-TR on USB 2.0 differential pairs?

Place the device within 3 mm of the USB connector with symmetric trace lengths to both K1 and K2 pins; route CA (pin 3) directly to a low-inductance ground plane using multiple vias; avoid stubs or discontinuities on protected lines to preserve 90 Ω differential impedance and minimize ESD-induced common-mode noise.

Does PESD2USB5UX-TR protect against both positive and negative ESD transients?

Yes-it provides bidirectional protection per channel using unidirectional diodes configured with K1/K2 cathodes and shared CA anode: positive transients on either line forward-bias the respective diode to ground, while negative transients are suppressed by the diode's reverse breakdown behavior above 7.2 V, clamping at ≤3.3 V in TLP testing.

Can PESD2USB5UX-TR be used on HDMI 2.0 sources driving 4K@60Hz signals?

Yes-its 0.47 pF capacitance and 3.3 V clamping voltage maintain signal integrity up to 6 Gbps (HDMI 2.0), provided layout follows controlled-impedance routing (100 Ω differential), short trace lengths (<15 mm), and proper ground referencing; actual performance must be validated with eye diagram testing per HDMI Compliance Test Specification.

How does the 175 °C junction temperature rating translate to board-level thermal design?

The 175 °C rating allows operation at ambient temperatures up to 125 °C (AEC-Q101 Grade 3) with typical power dissipation <1 mW during ESD events; no heatsinking is required, but PCB copper area under the SOT23 pad should be ≥25 mm² and thermally connected to internal ground planes to manage transient thermal spikes during repetitive 8 kV discharges.