Nexperia USA Inc. PESD3V3S1UL,315

Overview

PESD3V3S1UL from Nexperia is a unidirectional ESD protection diode in a DFN1006-2 (SOD882) leadless ultra-small SMD package, designed to protect single signal lines against IEC 61000-4-2 level 4 ESD (±30 kV contact) and IEC 61000-4-5 surge (15 A, 8/20 µs). It features 3.3 V reverse standoff voltage, 207–300 pF capacitance at 1 MHz, and clamps transients to ≤20 V at 15 A peak pulse current - deployed in USB data lines, HDMI interfaces, and audio jack protection circuits.

For engineers reviewing the PESD3V3S1UL datasheet, PESD3V3S1UL pinout, PESD3V3S1UL application, or PESD3V3S1UL equivalent, this page delivers verified electrical parameters, validated package dimensions, confirmed unidirectional clamping behavior, and real-world placement guidance for high-speed signal line protection in consumer and industrial electronics.

Technical Context

This device operates as a silicon avalanche diode with unidirectional conduction: anode (Pin 2) connects to the protected signal line, cathode (Pin 1) to ground, enabling low-leakage standby (IRM < 2 µA at 3.3 V) and fast transient response (<1 ns rise time per IEC 61000-4-2). Its clamping action begins above 5.2 V breakdown (VBR), limiting voltage excursions during ESD events while maintaining signal integrity on low-voltage, high-bandwidth paths.

The DFN1006-2 footprint (1.0 mm × 0.6 mm × 0.48 mm) supports automated placement and reflow soldering per IPC-7095 guidelines. Thermal resistance (RθJA ≈ 300 K/W) and junction temperature limit (Tj ≤ 150 °C) allow operation across –55 °C to +150 °C ambient, with derated peak pulse power above 25 °C per Fig. 4 of the datasheet.

Key Specifications

Pinout & Package

DFN1006-2 (SOD882) plastic leadless package: 1.0 mm × 0.6 mm × 0.48 mm body, 0.65 mm pitch, two terminals, top-side marking bar indicating cathode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4105LT1G, PESD3V3S1UL offers lower capacitance and tighter 3.3 V VRWM for precision 3.3 V signal rails, while avoiding unnecessary bidirectional overhead. The VEML6030X01 is not a valid alternative and must be excluded from ESD protection selection.

Availability

PESD3V3S1UL is available at Aetrix Electronics and suitable for USB interface protection, HDMI port hardening, and audio jack ESD guard circuits requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for PESD3V3S1UL 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 essential semiconductors - including ESD protection, logic, MOSFETs, and bipolar transistors - serving automotive, industrial, and consumer markets.

This device belongs to Nexperia's PESD series of unidirectional ESD protection diodes, engineered specifically for ultra-compact, high-speed signal line protection in portable and interface-dense electronics.

FAQ

What is the maximum operating temperature for PESD3V3S1UL?

The junction temperature limit is 150 °C, and the ambient operating range is –55 °C to +150 °C. Derating of peak pulse power applies above 25 °C per Figure 4 in the datasheet; at 125 °C ambient, PPPM reduces to approximately 60% of its 25 °C value (90 W).

Can PESD3V3S1UL protect bidirectional signals like I²C?

No - it is unidirectional only. For bidirectional buses such as I²C or SMBus, a bidirectional ESD diode (e.g., PESD5V0S1BA) is required. Using PESD3V3S1UL on bidirectional lines risks forward conduction during normal signal swings, disrupting communication.

How should the device be placed on the PCB for optimal ESD suppression?

Mount it within 2 mm of the connector or I/O pad, with the shortest possible trace from anode to signal line and cathode directly to a solid ground plane. Avoid vias in the ground path; use multiple ground vias if multilayer routing is necessary - per Figure 9 and layout guidelines in Section 10 of the datasheet.

Is PESD3V3S1UL automotive qualified?

No - the revision history (Section 13) explicitly states "Product changed to non-automotive qualification" in v.5 (2025). It is intended for commercial and industrial applications only; automotive use requires AEC-Q200 qualified alternatives such as PESD3V3S1UL-A.