Nexperia USA Inc. PESD3V3S4UD-QX

Overview

PESD3V3S4UD-Q from Nexperia is a quadruple unidirectional ESD protection diode array in SOT457 (SC-74/TSOP6) package, designed to protect four signal lines with 3.3 V reverse standoff voltage, 12 V clamping at 20 A, 215–300 pF capacitance, and AEC-Q101 qualification for automotive interfaces.

For engineers reviewing the PESD3V3S4UD-Q datasheet, PESD3V3S4UD-Q pinout, PESD3V3S4UD-Q application, or PESD3V3S4UD-Q equivalent, key selection criteria include low clamping voltage under 20 A surge, sub-300 nA leakage at 3.3 V, IEC 61000-4-2 level 4 (30 kV contact) compliance, and common-anode quad-diode topology for compact PCB-level transient suppression.

Technical Context

This device implements four independent unidirectional ESD protection paths sharing two common anodes (pins 2 and 5), enabling bidirectional line protection using only three pins per pair. Each cathode-anode path has a breakdown voltage of 5.3–5.9 V and clamps to ≤12 V at 20 A 8/20 µs surge.

It operates across –65 °C to +150 °C ambient, supports peak pulse power up to 200 W, and maintains <800 nA reverse leakage at VRWM = 3.3 V and 25 °C - critical for low-power USB, SIM, and audio data lines where signal integrity and standby current matter.

Key Specifications

Pinout & Package

SOT457 (SC-74/TSOP6) is a 6-pin, surface-mount plastic package measuring 3.1 × 1.7 × 1.1 mm with gull-wing leads and thermal pad-compatible footprint. Its compact size enables placement directly at connectors or I/O ports.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4105MR6T1G, PESD3V3S4UD-Q delivers lower clamping (12 V vs. 14.5 V), tighter capacitance control (215–300 pF vs. 350 pF), and true quad-channel capability in a 6-pin TSOP6 - making it superior for space-constrained, high-immunity 4-line protection in automotive and portable designs.

Availability

PESD3V3S4UD-Q is available at Aetrix Electronics and suitable for automotive infotainment systems, portable media devices, and SIM card interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.

Supply support for PESD3V3S4UD-Q 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 Automotive-Qualified ESD Protection Diode family, engineered specifically for robust, low-capacitance I/O line protection in harsh environments such as automotive cabins and portable consumer electronics.

FAQ

What is the maximum operating temperature for PESD3V3S4UD-Q?

The device supports junction temperatures up to 150 °C and ambient temperatures from –65 °C to +150 °C, verified per AEC-Q101 stress testing. This range covers under-hood automotive locations and industrial enclosures where thermal management is limited.

Can PESD3V3S4UD-Q protect bidirectional signal lines?

Yes - its dual-common-anode architecture (pins 2 and 5) allows configuration for bidirectional protection of up to three lines: e.g., using pins 1–2–3 for one direction and pins 4–5–6 for the opposite, or combining cathodes across anodes for symmetric clamping.

Is the 30 kV ESD rating applicable to both contact and air discharge?

No - the 30 kV rating applies only to contact discharge per IEC 61000-4-2 Level 4; air discharge rating is 15 kV. Both values were validated using ten non-repetitive pulses, with clamping performance maintained below 12 V at full 20 A test current.

How does the 215–300 pF capacitance affect high-speed signal integrity?

This capacitance range is optimized for DC–480 Mbps interfaces like USB 2.0 and audio data lines: it introduces negligible rise-time degradation (<100 ps added delay) while remaining low enough to avoid signal reflection or attenuation in typical 50 Ω trace environments.