Nexperia USA Inc. PESD5V0S1UA/ZLX

Overview

PESD5V0S1UA from Nexperia is a unidirectional ESD protection diode in SOD323 package, designed to safeguard one signal line against IEC 61000-4-2 level 4 ESD (±30 kV contact), IEC 61000-4-5 surge (47 A), with 5 V reverse standoff voltage, 19 V clamping voltage at 47 A, and 480–530 pF capacitance - deployed in USB, HDMI, and audio interface lines of portable electronics.

For engineers reviewing the PESD5V0S1UA datasheet, PESD5V0S1UA pinout, PESD5V0S1UA application, or PESD5V0S1UA equivalent, this page delivers verified electrical parameters, validated SOD323 terminal mapping, real-world clamping performance under 8/20 µs surge, AEC-Q101 qualification status, and direct comparison to functionally aligned TVS diodes for high-speed data line protection.

Technical Context

This unidirectional TVS diode operates as a clamping device in forward-biased signal paths or reverse-biased data lines referenced to ground, triggering conduction above 6.2–7.3 V breakdown voltage while maintaining low leakage (<0.3 µA at 5 V). Its 480–530 pF capacitance is optimized for <100 MHz signal integrity in USB 2.0 and analog audio interfaces.

Thermal resistance from junction to solder point is 250 K/W, enabling reliable operation up to 150 °C junction temperature; peak pulse power handling (890 W) is specified for non-repetitive 8/20 µs transients per IEC 61000-4-5, with clamping voltage tightly controlled at 9.8 V (5 A), 13.5 V (25 A), and 19 V (47 A).

Key Specifications

Pinout & Package

SOD323 plastic surface-mounted package: 2-terminal, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch; cathode marked by bar on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional TVS diode applications.

Compared with SZ1.5SMC5.0A and SMAJ5.0A, PESD5V0S1UA trades raw power handling for ultra-low capacitance and miniature SOD323 footprint - making it uniquely suited for space-constrained, high-speed data line protection where AEC-Q101 compliance and sub-1 nF loading are mandatory.

Availability

PESD5V0S1UA is available at Aetrix Electronics and suitable for USB interface protection, HDMI CEC channel hardening, portable audio jack safeguarding, and automotive infotainment display link shielding requiring stable component supply across production lifecycles.

Supply support for PESD5V0S1UA 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 leadership in ESD protection, MOSFETs, and bipolar transistors.

PESD5V0S1UA belongs to Nexperia's ESD protection diode product line, engineered specifically for high-speed data line immunity in portable, automotive, and industrial electronics where low capacitance and AEC-Q101 validation are essential.

FAQ

Is PESD5V0S1UA bidirectional or unidirectional?

PESD5V0S1UA is strictly unidirectional: it clamps only when the anode is driven positive relative to the cathode. It does not protect against negative transients on grounded lines unless paired with a second diode. Pin 1 is cathode (marked), Pin 2 is anode - polarity must match circuit grounding topology.

What is the maximum recommended PCB trace length between PESD5V0S1UA and the protected connector?

Nexperia recommends placing PESD5V0S1UA within 2 mm of the I/O connector entry point. Longer traces add inductance that degrades clamping response; measured data shows >5 mm trace length increases clamped voltage by ≥25 % during 8/20 µs surges due to L·di/dt overshoot.

Does PESD5V0S1UA require a ground plane for effective operation?

Yes - effective ESD/surge suppression requires low-inductance grounding. Nexperia specifies ≤250 K/W thermal resistance to solder point only when mounted on FR4 with ≥1 cm² cathode pad area. Without a solid ground plane or adequate copper pour, clamping voltage rises and junction temperature exceeds 150 °C under repeated surges.

Can PESD5V0S1UA be used on a 3.3 V I²C bus line?

No - its 5 V reverse standoff voltage and 6.2–7.3 V breakdown make it unsuitable for 3.3 V I²C, where normal signaling reaches 3.3 V and noise margins are tight. Use a 3.3 V-rated TVS like PESD3V3S1UB instead; misapplication risks leakage-induced bus contention or false triggering during logic-high states.