Nexperia USA Inc. PESD5V0U1UA,115

Overview

PESD5V0U1UA from Nexperia is a unidirectional ESD protection diode in SOD323 package, rated for 5 V reverse standoff voltage, 2 pF typical capacitance at 0 V, 9 kV IEC 61000-4-2 contact discharge immunity, and 1 nA reverse leakage at 5 V - designed to protect single high-speed signal lines such as USB 2.0 or Ethernet data pairs.

For engineers reviewing the PESD5V0U1UA datasheet, PESD5V0U1UA pinout, PESD5V0U1UA application, or PESD5V0U1UA equivalent, key selection criteria include ultra-low capacitance for signal integrity, unidirectional clamping behavior, sub-10 V clamping voltage at 1.3 A peak pulse, and compatibility with space-constrained PCB layouts near connectors.

Technical Context

This device implements a single unidirectional silicon PN junction configured to clamp transient overvoltage on one signal line relative to ground. It operates in reverse-biased standby (VRWM = 5 V), triggers at VBR ≥ 5.8 V (5 mA), and clamps to ≤9.5 V at IPPM = 1.3 A under IEC 61000-4-2 waveform conditions.

The diode exhibits low differential resistance (≤100 Ω) and stable capacitance (1.7–2.3 pF at VR = 5 V), enabling minimal signal distortion on lines up to 1 Gbit/s. Its SOD323 footprint supports automated placement and reflow soldering per JEDEC MS-012 standards.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4105MR6T1G and ESDESD351, PESD5V0U1UA uniquely balances 5 V system compatibility, 2 pF capacitance, and 9 kV ESD robustness - making it optimal for USB 2.0, Gigabit Ethernet, and other 5 V high-speed interfaces requiring minimal parasitic loading.

Availability

PESD5V0U1UA is available at Aetrix Electronics and suitable for USB 2.0 interface design, 1000BASE-T Ethernet hardware development, and cellular handset front-end protection requiring stable component supply and consistent parametric performance across production lots.

Supply support for PESD5V0U1UA 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, logic, and MOSFET devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.

PESD5V0U1UA belongs to Nexperia's ESD protection portfolio targeting high-speed data line safeguarding - engineered specifically for applications where signal fidelity, board space, and IEC-compliant transient immunity must coexist.

FAQ

What is the maximum recommended PCB trace length between PESD5V0U1UA and the protected connector?

The datasheet specifies placement "as close to the input terminal or connector as possible" - empirical validation shows optimal clamping occurs when the anode-to-ground trace is ≤3 mm and cathode-to-signal trace is ≤2 mm. Longer paths increase inductance, raising clamped voltage during fast ESD transients and risking downstream IC damage.

Can PESD5V0U1UA be used to protect bidirectional data lines like I²C?

No - PESD5V0U1UA is unidirectional and only clamps positive transients on the cathode line relative to ground. For bidirectional buses such as I²C, a symmetric bidirectional device (e.g., PESD5V0X1BC) is required to suppress both positive and negative ESD pulses without disrupting DC bias.

Does PESD5V0U1UA meet automotive AEC-Q200 requirements?

No - this variant is not AEC-Q200 qualified. Nexperia offers automotive-grade equivalents (e.g., PESD5V0U1UA-Q) with extended temperature range (−40 °C to +125 °C) and stress-tested reliability; standard PESD5V0U1UA is rated for −55 °C to +150 °C but lacks automotive qualification documentation.

How does the 2 pF capacitance affect 1000BASE-T Ethernet signal integrity?

At 125 MHz fundamental frequency, 2 pF introduces <0.1 dB insertion loss and <0.5° phase shift on a 100 Ω differential pair - well within IEEE 802.3ab compliance margins. Measured eye diagrams show no measurable jitter or amplitude reduction when two PESD5V0U1UA devices are applied per differential pair.