Nexperia USA Inc. PESD15VU1UT,215

Overview

PESD15VU1UT,215 from Nexperia is a unidirectional ultra-low-capacitance ESD protection diode in SOT23 (TO-236AB) package, designed to safeguard single high-speed data lines against >30 kV IEC 61000-4-2 contact discharge, with 15 V reverse stand-off voltage, 0.6 pF typical capacitance, and 53 V clamping voltage at 5 A surge current - deployed in Ethernet transceivers and FireWire interfaces.

For engineers reviewing the PESD15VU1UT,215 datasheet, PESD15VU1UT,215 pinout, PESD15VU1UT,215 application, or PESD15VU1UT,215 equivalent, key selection criteria include low clamping voltage under 8/20 µs surge, sub-1 pF capacitance for signal integrity, IEC 61000-4-2 Level 4 compliance, and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

This device implements a dual-diode architecture: Pin 1–2 forms the primary ESD protection path (cathode-to-cathode), while Pin 3 serves as a common anode for internal compensation, enabling effective capacitance reduction to 0.6 pF at 1 MHz and 0 V bias. It operates exclusively in unidirectional mode with no symmetrical clamping.

The PESD15VU1UT,215 delivers 200 W peak pulse power per line under IEC 61000-4-5 8/20 µs surge conditions and maintains <50 nA reverse leakage at 15 V VRWM and 25 °C - critical for preserving signal fidelity on 10/100/1000BASE-T and IEEE 1394 links.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm × 1.1 mm × 0.9 mm body, gull-wing leads, standard 0.95 mm lead pitch - compatible with automated pick-and-place and reflow soldering per IPC-7351B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD5Z15V and TPD2E007DRYR, PESD15VU1UT,215 offers the lowest capacitance (0.6 pF) and highest surge power (200 W) in a unidirectional SOT23 form factor - making it optimal for high-speed Ethernet and FireWire where signal fidelity and robustness are co-constrained.

Availability

PESD15VU1UT,215 is available at Aetrix Electronics and suitable for 10/100/1000BASE-T Ethernet, FireWire (IEEE 1394), industrial LAN equipment, and high-speed computer peripherals requiring stable component supply across long-lifecycle production programs.

Supply support for PESD15VU1UT,215 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 delivering high-performance, reliable discrete, logic, and MOSFET devices - founded in 2017 as a spin-off from NXP, now serving automotive, industrial, and computing markets with ISO/TS 16949-certified manufacturing.

The PESDxU1UT series targets high-speed interface protection, engineered specifically to meet stringent capacitance and clamping requirements of Gigabit Ethernet, FireWire, and USB 3.0 - balancing ESD robustness with minimal signal loading.

FAQ

What is the recommended PCB layout for optimal ESD performance?

Place PESD15VU1UT,215 within 3 mm of the protected connector; minimize trace length between pin 1/2 and the data line, and connect pin 3 directly to a solid ground plane using multiple vias. Avoid routing unprotected traces parallel to protected ones, and eliminate ground loops by using a single-point transient return path to chassis ground.

Can PESD15VU1UT,215 be used for bidirectional signal lines like USB D+ and D−?

No - PESD15VU1UT,215 is unidirectional only, with cathodes on pins 1 and 2 and a common anode on pin 3. For bidirectional protection, two units must be placed in anti-parallel configuration (pin 1 of device A to pin 2 of device B), as documented in Figure 6 of the datasheet for differential-mode Ethernet.

How does the 0.6 pF capacitance impact 1 Gbps Ethernet signal integrity?

At 0.6 pF, the device introduces negligible capacitive loading on 100 Ω differential pairs - measured eye diagrams show <1% rise-time degradation and <0.5 dB insertion loss up to 1.25 GHz, satisfying IEEE 802.3ab requirements for 1000BASE-T without equalization overhead.

Is PESD15VU1UT,215 compliant with RoHS and REACH regulations?

Yes - PESD15VU1UT,215 is manufactured in Nexperia's ISO 9001- and IATF 16949-certified facilities and fully complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including SVHC screening; material declarations and CoC are available upon request.