Nexperia USA Inc. PESD3V3X1BCSFYL

Overview

PESD3V3X1BCSF from Nexperia is a bidirectional ESD protection diode in a DSN0603-2 (SOD962-2) ultra-small leadless package, designed for single-line interface protection with 3.3 V reverse standoff voltage, 1.1 pF capacitance, and ±20 kV IEC 61000-4-2 ESD immunity-used in high-speed USB, HDMI, and MIPI data lines of portable electronics.

For engineers reviewing the PESD3V3X1BCSF datasheet, PESD3V3X1BCSF pinout, PESD3V3X1BCSF application, or PESD3V3X1BCSF equivalent, key selection criteria include ultra-low capacitance for signal integrity, bidirectional clamping behavior, 5.5 V clamping voltage at 8 A, dynamic resistance of 0.25 Ω, and compatibility with 0.4 mm pitch PCB layouts.

Technical Context

This device implements a dual-cathode, bidirectional TVS structure optimized for transient suppression on AC-coupled or bipolar signal lines. It operates without DC bias dependency and is unsuitable for power rail protection due to lack of DC blocking capability.

Its V-I characteristics show symmetrical clamping above ±6 V breakdown, with dynamic resistance measured at 0.25 Ω under TLP conditions (100 ns pulse), enabling fast response to sub-nanosecond ESD events while maintaining low insertion loss on RF-sensitive interfaces.

Key Specifications

Pinout & Package

DSN0603-2 (SOD962-2) is a 0.6 mm × 0.3 mm × 0.3 mm leadless surface-mount package with 0.4 mm pitch and two terminals. Its ultra-compact footprint supports high-density routing on space-constrained mobile PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD9B3.3ST5G and VEML3328, PESD3V3X1BCSF delivers superior high-frequency performance via its 0.6 mm × 0.3 mm DSN0603-2 footprint and lowest dynamic resistance, making it optimal for next-generation mobile interface protection where signal fidelity and compactness are critical.

Availability

PESD3V3X1BCSF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control channel hardening, and MIPI D-PHY lane safeguarding requiring stable component supply across high-volume consumer electronics production.

Supply support for PESD3V3X1BCSF 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-performance, reliable discrete, logic, and MOSFET devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

This device belongs to Nexperia's ESD protection portfolio, engineered specifically for ultra-low-capacitance, high-speed interface protection in portable and wireless electronics where board space and signal integrity are constrained.

FAQ

Can PESD3V3X1BCSF be used on power supply lines?

No. The device is explicitly designed for signal line protection only and must not be connected to DC power rails. Its bidirectional structure lacks DC blocking capability, and operation above 3.3 V reverse standoff will cause leakage or breakdown. Per section 10 of the datasheet, it is intended solely for AC-coupled or bipolar data lines.

What is the recommended PCB layout for optimal ESD performance?

Place the device within 2 mm of the protected connector, minimize trace length to ground, avoid parallel routing with unprotected traces, and use solid ground planes with multiple vias. Section 10 specifies that transient return path length must be minimized-long ground traces increase inductance and degrade clamping effectiveness during sub-nanosecond ESD events.

How does the 0.25 Ω dynamic resistance impact system-level ESD robustness?

This value directly determines voltage overshoot during fast transients: lower Rdyn yields tighter clamping. At 8 A peak current, 0.25 Ω contributes only 2 V to total clamping voltage, enabling the device to hold VCL ≤5.5 V-critical for protecting modern 1.8 V/3.3 V I/O cells with thin gate oxides vulnerable to overvoltage stress.

Is PESD3V3X1BCSF automotive qualified?

No. The datasheet contains no AEC-Q200 qualification statement, and Nexperia's legal disclaimers explicitly state that non-automotive qualified products are not tested to automotive requirements. Use in automotive applications requires separate validation and carries full customer liability per section 14 of the datasheet.