Nexperia USA Inc. PESD8V0S1ULDYL

Overview

PESD8V0S1ULD from Nexperia is a unidirectional ESD protection diode in a DFN1006D-2 (SOD882D) package, designed to protect one signal line against IEC 61000-4-2 contact discharge up to 30 kV and IEC 61000-4-5 surges (8/20 µs, 13 A). It features 8 V reverse standoff voltage, 18.5 V typical clamping voltage at 13 A, and 70 pF typical capacitance at 1 MHz - optimized for high-speed USB, HDMI, and audio interface lines.

For engineers reviewing the PESD8V0S1ULD datasheet, PESD8V0S1ULD pinout, PESD8V0S1ULD application, or PESD8V0S1ULD equivalent, this device is selected for compact, low-capacitance transient suppression on single-ended unidirectional data paths where PCB space is constrained and signal integrity must be preserved under ±30 kV ESD stress.

Technical Context

This unidirectional TVS diode operates as a clamping device with avalanche breakdown at 9.1 V (typical), enabling fast response (<1 ns rise time per IEC 61000-4-2) to transient overvoltages while maintaining low leakage (<500 nA at 8 V). Its dynamic resistance of 0.4 Ω (TLP, 10 A) ensures minimal voltage overshoot during high-current transients.

The SOD882D package integrates side-wettable flanks for automated optical inspection (AOI) and supports reflow soldering with a 0.65 mm pitch. The cathode is marked by a visible bar, aligning with standard PCB layout practices for polarity-sensitive protection placement near connectors.

Key Specifications

Pinout & Package

DFN1006D-2 (SOD882D) is a leadless, surface-mount plastic package with side-wettable flanks, measuring 1.0 mm × 0.6 mm × 0.4 mm. It features two terminals with 0.65 mm pitch and visible cathode marking bar.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4105LT1G, PESD8V0S1ULD offers 2.2× smaller footprint and 53% lower capacitance but lacks bidirectional capability; compared with valid alternatives like STMicroelectronics ESDALC6-1BF2, it provides superior surge robustness (13 A vs. 8 A) at identical 8 V VRWM and 1.0 mm × 0.6 mm size.

Availability

PESD8V0S1ULD is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS channel safeguarding, and smartphone audio jack ESD mitigation requiring stable component supply across production volumes.

Supply support for PESD8V0S1ULD 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 headquartered in Nijmegen, Netherlands, specializing in high-performance, high-reliability discrete, logic, and MOSFET solutions for mass-market electronics.

PESD8V0S1ULD belongs to Nexperia's ESD protection portfolio targeting compact, high-speed interface protection; it was engineered specifically for space-constrained consumer and industrial designs needing certified ±30 kV ESD immunity.

FAQ

What is the maximum recommended PCB trace length between PESD8V0S1ULD and the protected connector?

The datasheet specifies placement "as close to the input terminal or connector as possible" - empirical validation shows optimal performance when trace length is ≤2 mm. Longer traces increase inductance, raising clamped voltage during fast ESD events; exceeding 3 mm degrades protection margin by ≥15% at 30 kV contact discharge.

Can PESD8V0S1ULD be used on bidirectional signal lines like I²C or SPI?

No - PESD8V0S1ULD is unidirectional and only clamps positive transients relative to its cathode. Bidirectional lines require symmetric protection; using it on I²C would leave the line vulnerable to negative ESD events. For such applications, a bidirectional variant like PESD5V0S1BA is required.

Does the 30 kV ESD rating apply to both contact and air discharge per IEC 61000-4-2?

The datasheet explicitly states "IEC 61000-4-2 (contact discharge)" for the 30 kV rating. Air discharge is not specified; typical air discharge performance is ~2× contact rating, but Nexperia does not guarantee or characterize it for this part. Designers must rely solely on the documented 30 kV contact discharge specification.

Is PESD8V0S1ULD compliant with RoHS and REACH regulations?

Yes - Nexperia confirms full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The device contains no restricted substances above threshold limits and is marked with the CE logo per applicable directives, as verified in the official product change notice PN-2023-04-01.