NXP Semiconductors PESD3V3L1UA,115

Overview

PESD3V3L1UA from Nexperia is a unidirectional ESD protection diode in SOD323 (SC-76) package, designed to safeguard single high-speed signal lines against electrostatic discharge up to 30 kV contact discharge. It delivers low clamping voltage (11 V at 4.5 A), ultra-low capacitance (34 pF typical), and reverse standoff voltage of 3.3 V - ideal for protecting SIM card interfaces and USB data lines in portable electronics.

For engineers reviewing the PESD3V3L1UA datasheet, PESD3V3L1UA pinout, PESD3V3L1UA application, or PESD3V3L1UA equivalent, key selection criteria include IEC 61000-4-2 Level 4 compliance, AEC-Q101 qualification, sub-100 nA leakage current at 3.3 V, and suitability for space-constrained PCB layouts requiring minimal trace inductance between connector and device.

Technical Context

The PESD3V3L1UA operates as a unidirectional transient voltage suppression diode with avalanche breakdown behavior, triggered above 5.3 V (min) and clamping transients to ≤11 V at 4.5 A peak pulse current. Its 34 pF capacitance at 1 MHz and 0 V bias ensures minimal signal integrity impact on lines up to 100 Mbps.

Designed for single-line protection with cathode-anode polarity, it supports both positive- and negative-polarity signal paths relative to ground. The device meets IEC 61000-4-2 Level 4 (≥8 kV contact, ≥15 kV air) and MIL-STD-883 Class 3 HBM (≥4 kV), with AEC-Q101 qualification confirming robustness for automotive infotainment and telematics interfaces.

Key Specifications

Pinout & Package

SOD323 (SC-76) surface-mount plastic package: 2-terminal, 2.3 mm × 1.35 mm × 0.95 mm body size with cathode marking bar on top side. Optimized for reflow soldering only; footprint requires 0.6 mm × 0.5 mm solder lands per terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD3V3U1U,115 and TPD3E001DPYR, the PESD3V3L1UA provides the highest certified ESD withstand (30 kV), smallest single-line footprint (SOD323), and lowest leakage (100 nA), making it optimal for exposed, battery-sensitive, and automotive-qualified single-signal protection.

Availability

PESD3D3V3L1UA is available at Aetrix Electronics and suitable for SIM card interfaces, USB 2.0 data lines, and automotive infotainment display ports requiring stable component supply across high-volume production cycles.

Supply support for PESD3V3L1UA 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.

The PESD3V3L1UA belongs to Nexperia's low-capacitance unidirectional ESD protection diode family, engineered specifically for high-speed data line protection in portable, automotive, and industrial electronics where signal integrity and space constraints are critical.

FAQ

What is the maximum ESD voltage rating for PESD3V3L1UA according to IEC 61000-4-2?

The PESD3V3L1UA is rated for 30 kV contact discharge per IEC 61000-4-2 Level 4, verified through ten non-repetitive ESD pulses. This exceeds the 8 kV minimum required for Level 4 compliance and supports robust protection for externally accessible ports such as SIM slots and USB connectors. The PESD3V3L1UA maintains clamping voltage ≤11 V during these events, ensuring downstream IC safety.

Does PESD3V3L1UA support automotive applications?

Yes, the PESD3V3L1UA is AEC-Q101 qualified, having passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life. Its operating ambient temperature range of −55 °C to +150 °C and junction temperature limit of 150 °C make it suitable for automotive infotainment, telematics, and body control module interfaces where ESD exposure and thermal reliability are critical. The PESD3V3L1UA is commonly deployed on CAN, LIN, and display data lines in production vehicles.

What is the diode capacitance of PESD3V3L1UA and why does it matter?

The PESD3V3L1UA has a typical diode capacitance of 34 pF at 1 MHz and 0 V reverse bias. This low value minimizes loading on high-speed signal lines, preserving edge rates and eye diagram integrity for protocols like USB 2.0 (480 Mbps), FireWire, and audio serial interfaces. Higher capacitance would cause signal attenuation and timing skew; the PESD3V3L1UA's 34 pF enables placement directly at connectors without equalization or retiming.

How is the polarity configured for PESD3V3L1UA in circuit design?

The PESD3V3L1UA is a unidirectional diode with cathode (pin 1) marked by a bar on the package top and anode (pin 2) as the signal-side terminal. In normal operation, it blocks current flow from anode to cathode until reverse voltage exceeds 3.3 V. For positive-polarity signal lines, cathode connects to ground and anode to the protected line; for negative-polarity lines, cathode connects to the signal and anode to ground. The PESD3V3L1UA's polarity configuration must match the signal reference to ensure proper clamping behavior.

What is the leakage current specification for PESD3V3L1UA at its rated standoff voltage?

The PESD3V3L1UA exhibits a maximum reverse leakage current (IRM) of 100 nA at VRWM = 3.3 V and Tamb = 25 °C, with typical values around 10 nA. This ultra-low leakage prevents excessive battery drain in always-on portable devices such as smartphones, wearables, and wireless sensors. The PESD3V3L1UA's 100 nA spec ensures compatibility with low-power microcontroller I/Os and analog front-ends where standby current budgets are tight.