onsemi SZESD1L001W1T2G

Overview

SZESD1L001W1T2G from onsemi is a low-capacitance ESD protection diode designed for high-speed differential data lines including USB 3.0 and HDMI. It delivers 0.3 pF typical junction capacitance (I/O to GND), 30 V typical clamping voltage at +16 A TLP, and ±8 kV IEC 61000−4−2 contact ESD protection. Its SC−88 package enables matched trace routing for impedance control.

For engineers reviewing the SZESD1L001W1T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity, automotive-grade AEC−Q101 qualification, IEC 61000−4−2 Level 4 compliance, short-to-battery survivability, and flow-through layout compatibility with high-speed differential pairs.

Technical Context

The SZESD1L001W1T2G integrates bidirectional ESD protection across six pins in an SC−88 package, supporting up to four independent high-speed data lines. Its architecture uses low-leakage silicon diodes with optimized junction design to achieve 0.3 pF capacitance and sub-30 V clamping under 16 A TLP stress.

It operates across −55 °C to +125 °C junction temperature and meets IEC 61000−4−2 Level 4 (±8 kV contact / ±15 kV air) while maintaining 5 GHz 3dB bandwidth and <0.5 pF inter-pin capacitance - critical for preserving eye diagram integrity at 5 Gb/s in USB 3.0 applications.

Key Specifications

Pinout & Package

SC−88 package (Case 419B−02), 2.00 mm × 1.25 mm × 0.90 mm, 0.65 mm pitch, Pb−Free, flow-through configuration enabling symmetrical PCB trace routing for differential pairs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPD4E001DBVR, SZESD1L001W1T2G offers lower capacitance (0.3 vs. 0.5 pF), automotive qualification, and tighter package dimensions - making it preferable for space-constrained, safety-critical 5 Gb/s designs where signal fidelity and environmental robustness are prioritized.

Availability

SZESD1L001W1T2G is available at Aetrix Electronics and suitable for USB 3.0 interface protection, HDMI 1.4 data lane hardening, and automotive LVDS camera links requiring stable component supply across production lifecycles.

Supply support for SZESD1L001W1T2G 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

onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

SZESD1L001W1T2G belongs to onsemi's ESD1L family of ultra-low-capacitance transient voltage suppressors, engineered specifically for protecting high-speed serial interfaces without compromising signal integrity.

FAQ

What is the maximum operating junction temperature for SZESD1L001W1T2G?

The SZESD1L001W1T2G has a maximum operating junction temperature of +125 °C, with a full operational range from −55 °C to +125 °C. This rating is confirmed in the Maximum Ratings table of the official datasheet (Rev. 3, February 2024) and supports deployment in under-hood automotive environments and industrial edge computing systems where thermal management is constrained. The SZESD1L001W1T2G maintains specified clamping performance across this entire range.

Does SZESD1L001W1T2G support bidirectional ESD protection?

Yes, SZESD1L001W1T2G provides bidirectional ESD protection, verified by its symmetric clamping behavior: +30 V typical at +16 A TLP and −10.8 V at −16 A TLP (Electrical Characteristics table). This enables robust suppression of both positive and negative ESD transients on high-speed differential lines like USB 3.0 RX/TX pairs. The SZESD1L001W1T2G achieves this using paired diode structures referenced to a common anode (Pin 3).

Is SZESD1L001W1T2G compliant with IEC 61000−4−2 Level 4?

Yes, SZESD1L001W1T2G is rated for ±8 kV contact and ±15 kV air discharge per IEC 61000−4−2 Level 4, as stated in the Maximum Ratings table. This compliance is demonstrated in Figures 3 and 4 of the datasheet, which show clamping waveforms under ±8 kV contact discharge. The SZESD1L001W1T2G is therefore suitable for end-equipment requiring full Level 4 immunity certification.

What is the typical junction capacitance of SZESD1L001W1T2G between I/O pins and GND?

The typical junction capacitance of SZESD1L001W1T2G between I/O pins and GND is 0.3 pF at VR = 0 V and f = 1 MHz, with a maximum of 0.5 pF (Electrical Characteristics table). This ultra-low value is measured across Pin 1 to GND and Pin 4 to GND configurations and is essential for minimizing signal degradation on 5 Gb/s USB 3.0 and HDMI links. The SZESD1L001W1T2G achieves this via optimized silicon geometry and low-parasitic packaging.

What does the "SZ" prefix indicate in SZESD1L001W1T2G?

The "SZ" prefix in SZESD1L001W1T2G denotes automotive-grade qualification: the device is AEC−Q101 qualified and PPAP capable, with unique site and process control requirements beyond standard commercial versions. This distinguishes it from the non-SZ ESD1L001W1T2G variant. The SZESD1L001W1T2G undergoes additional stress testing and traceability protocols required for automotive electronics deployment.