Nexperia USA Inc. PESD5V5U1BCSFYL

Overview

PESD5V5U1BCSF from Nexperia is a bidirectional ESD protection diode in a DSN0603-2 (SOD962-2) leadless package, designed to protect one signal line against IEC 61000-4-2 ESD (±20 kV) and IEC 61000-4-5 surge (5.4 A, 8/20 µs), with ultra-low clamping voltage (9 V max at 5.4 A), 5.3 pF capacitance, and <1 nA leakage current. It targets high-speed interface lines in portable electronics.

For engineers reviewing the PESD5V5U1BCSF datasheet, PESD5V5U1BCSF pinout, PESD5V5U1BCSF application, or PESD5V5U1BCSF equivalent, this page delivers verified electrical parameters, validated package dimensions, confirmed dual-cathode terminal mapping, and real-world ESD/surge protection use cases for compact consumer interface designs.

Technical Context

This device implements a symmetric bidirectional TVS structure using two back-to-back silicon diodes sharing a common anode node, enabling clamping of both positive and negative transients on a single line referenced to ground. Its low dynamic resistance (0.24 Ω) and fast response (<1 ns rise time per IEC 61000-4-2) ensure effective suppression of sub-100 ns ESD events without signal distortion.

The DSN0603-2 package's 0.6 mm × 0.3 mm footprint and 0.3 mm height minimize parasitic inductance and board space, while its ultra-low 5.3 pF capacitance preserves signal integrity on high-frequency lines such as USB 2.0, HDMI DDC, or I²C buses operating up to 400 kHz.

Key Specifications

Pinout & Package

DSN0603-2 (SOD962-2) is a leadless, ultra-small surface-mount package measuring 0.6 mm × 0.3 mm × 0.3 mm with 0.4 mm pitch and a cathode-marking bar on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PESD5V5U1BCSF, ESDE05C1-2 offers identical ESD robustness but sacrifices high-frequency performance due to 2.3× higher capacitance; no valid second alternative meets all key specs (5.5 V VRWM, <6 pF, ±20 kV, DSN0603-2), making PESD5V5U1BCSF uniquely suited for space-constrained, high-speed interface protection.

Availability

PESD5V5U1BCSF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC safeguarding, and I²C sensor line hardening requiring stable component supply across consumer electronics production ramps.

Supply support for PESD5V5U1BCSF 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.

This device belongs to Nexperia's PESD ultra-low-clamp portfolio, engineered specifically for protecting high-speed, space-constrained interface lines in portable consumer electronics without compromising signal fidelity or board area.

FAQ

What is the maximum operating temperature for PESD5V5U1BCSF?

The PESD5V5U1BCSF has a specified junction temperature limit of 150 °C and an ambient operating range of −40 °C to +125 °C. Its thermal resistance (R_θJA) is not published, but the 0.3 mm package height and copper pad layout per Figure 12 enable sufficient heat dissipation for transient-only duty cycles typical of ESD protection applications.

Can PESD5V5U1BCSF be used on power rails?

No - the device is explicitly not designed for DC power line protection. Section 10 of the datasheet states it is intended only for bidirectional signal line protection and must not be placed on lines connected to a DC supply, as its clamping behavior and lack of sustained power-handling capability could lead to failure under continuous overvoltage conditions.

How does the dual-cathode pinout function in practice?

Pins 1 and 2 are both cathodes tied internally to separate diode junctions sharing a common anode node connected to ground. During a positive transient, current flows from the signal line through Pin 1 into ground; during a negative transient, current flows from ground through Pin 2 into the signal line - enabling symmetrical clamping without external grounding of the anode.

Is PESD5V5U1BCSF automotive qualified?

No - the datasheet contains no AEC-Q200 qualification statement, and Section 14 explicitly declares that unless expressly stated, Nexperia products are not automotive qualified. This part is intended for commercial portable electronics and lacks the extended temperature range, qualification testing, and traceability required for automotive applications.