Diodes Incorporated DESD1V0ZS1BLP3-7

Overview

DESD1V0ZS1BLP3 from Diodes Incorporated is an ultra-low-capacitance bi-directional TVS diode designed for ESD protection of high-speed data lines, with 3V breakdown voltage, 4A peak pulse current, 0.15pF typical channel capacitance, ±14kV contact/±15kV air ESD rating, and operation in Thunderbolt™ 3/4 and USB Type-C® 20Gbps interfaces.

For engineers reviewing the DESD1V0ZS1BLP3 datasheet, DESD1V0ZS1BLP3 pinout, DESD1V0ZS1BLP3 application, or DESD1V0ZS1BLP3 equivalent, key selection criteria include sub-0.2pF capacitance at 1GHz, low clamping voltage (4.6V @ 8A TLP), IEC 61000-4-2 compliance, X3-DFN0603-2 package footprint, and suitability for differential high-speed serial links requiring minimal signal distortion.

Technical Context

This bi-directional TVS operates symmetrically across ±1.0V reverse standoff, triggering at 3.0V minimum breakdown to clamp transients while maintaining <100nA leakage. Its dynamic resistance of 0.34Ω (5–16A TLP) ensures rapid voltage suppression during nanosecond-scale ESD events.

The device uses a planar silicon junction structure optimized for ultra-low parasitic capacitance-0.15pF at 1MHz and 0.13pF at 1GHz-enabling use on 20Gbps differential pairs without measurable insertion loss degradation above 10GHz.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 (0.6mm × 0.3mm × 0.3mm, leadless, halogen-free, RoHS-compliant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMA6J3.3A-Q and SP1001-01UTG, DESD1V0ZS1BLP3 uniquely delivers sub-0.15pF capacitance in the X3-DFN0603-2 footprint with full ±15kV air ESD rating-making it the only option qualified for 20Gbps differential interface protection without signal integrity compromise.

Availability

DESD1V0ZS1BLP3 is available at Aetrix Electronics and suitable for Thunderbolt™ 4 interface protection, USB Type-C® 20Gbps lane hardening, and server backplane high-speed link safeguarding requiring stable component supply and consistent parametric performance across production lots.

Supply support for DESD1V0ZS1BLP3 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This device belongs to Diodes' Ultra-Low Capacitance TVS portfolio, engineered specifically for ESD protection of next-generation high-speed serial interfaces-including Thunderbolt, USB4, and PCIe 5.0-where sub-0.2pF capacitance and nanosecond response are mandatory.

FAQ

What is the maximum operating temperature range for DESD1V0ZS1BLP3?

The DESD1V0ZS1BLP3 is rated for continuous operation from –55°C to +150°C ambient temperature. This extended range supports deployment in thermally demanding environments such as server motherboards, automotive infotainment USB-C ports, and industrial docking stations where localized heating exceeds 100°C near high-power ICs.

Can DESD1V0ZS1BLP3 be used for unidirectional signal lines?

Yes-its bi-directional architecture allows use on unidirectional lines, but it must be placed with symmetric layout relative to the protected net and its reference (e.g., ground or common-mode voltage). It does not require polarity orientation, unlike unidirectional TVS devices, simplifying layout on single-ended control signals like I²C or SMBus.

Is the X3-DFN0603-2 package compatible with standard reflow profiles?

Yes-the device is qualified for IPC/JEDEC J-STD-020 moisture sensitivity level 1 and supports standard lead-free reflow profiles (peak 260°C, 60-second duration above 217°C). Its Au/NiAu terminations ensure wetting reliability on OSP- and ENIG-finished PCBs without voiding or dewetting under typical thermal cycling conditions.

How does the 0.13pF capacitance at 1GHz impact 20Gbps USB-C performance?

At 10GHz (Nyquist frequency of 20Gbps NRZ), 0.13pF introduces <0.15dB insertion loss and <0.5° phase shift on a 50Ω line-well within USB-IF specification margins. Measurement data (Figure 6 in DS45837) confirms no measurable eye closure or jitter increase when placed at connector pins, enabling direct integration without equalization compensation.