STMicroelectronics ESDA14V2L

Overview

ESDA14V2L from STMicroelectronics is a unidirectional dual Transil™ diode array for ESD protection of one or two signal lines, featuring 14.2–15.8 V breakdown voltage, <5 µA leakage at VRM, 300 W peak pulse power (8/20 µs), 14 A peak pulse current, and 90 pF line capacitance. It is used in high-density consumer connectivity interfaces requiring low clamping voltage and board space efficiency.

For engineers reviewing the ESDA14V2L datasheet, ESDA14V2L pinout, ESDA14V2L application, or ESDA14V2L equivalent, key selection criteria include standoff voltage (12 V), clamping voltage (≤30 V at 14 A), thermal robustness (−40 to 150 °C junction), SOT23-3L footprint compatibility, and IEC 61000-4-2 Level 4 compliance (30 kV contact/air discharge).

Technical Context

This device implements a dual-channel unidirectional TVS structure with common-cathode configuration in SOT23-3L. Each channel provides independent ESD suppression with matched breakdown characteristics (VBR = 14.2–15.8 V) and low dynamic impedance (650 mΩ typical).

It operates as a voltage-clamped transient suppressor: below 12 V stand-off, leakage remains <5 µA; above breakdown, it clamps transients to ≤30 V at 14 A (8/20 µs), limiting energy dissipation while preserving signal integrity in high-speed data lines.

Key Specifications

Pinout & Package

SOT23-3L package: surface-mount, lead-free, ECOPACK® compliant, 3-terminal plastic case with gull-wing leads. Dimensions per DocID7058 Rev 5 Table 3 (A=0.89–1.40 mm, e=0.85–1.05 mm, E=1.20–1.75 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDA6V1L and ESDA25L, ESDA14V2L uniquely balances 12 V system compatibility, 90 pF bandwidth, and 30 kV ESD hardness-making it optimal for mixed-voltage consumer and automotive body electronics interfaces.

Availability

ESDA14V2L is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC safeguarding, and automotive infotainment button ESD hardening requiring stable component supply across production lifecycles.

Supply support for ESDA14V2L 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and protection devices for automotive, industrial, and consumer markets.

The ESDAL series targets board-level ESD resilience in space-constrained, high-density applications-emphasizing low capacitance, standardized IEC testing compliance, and SOT23-3L manufacturability.

FAQ

What is the maximum continuous reverse voltage ESDA14V2L can withstand?

The maximum continuous reverse voltage (stand-off voltage VRM) is 12 V. At this voltage, leakage current remains below 5 µA, ensuring no impact on signal integrity or power consumption in 3.3 V or 5 V systems. Exceeding 12 V risks premature conduction and increased standby current.

Can ESDA14V2L be used for bidirectional ESD protection?

Yes-by connecting only pins 1 and 3 (anodes) to the protected lines and grounding pin 2 (cathode), the device functions as a bidirectional suppressor. This configuration leverages symmetrical avalanche behavior but reduces effective clamping margin compared to unidirectional use.

Does ESDA14V2L meet automotive qualification standards?

While not AEC-Q200 qualified itself, ESDA14V2L is widely deployed in automotive infotainment and body electronics due to its −40 to 150 °C operating range, 30 kV IEC 61000-4-2 rating, and robust SOT23-3L construction. System-level qualification per ISO 10605 is required for full automotive compliance.

How does ESDA14V2L's 90 pF capacitance affect high-speed signal integrity?

At 90 pF, ESDA14V2L is suitable for signals up to ~100 MHz-preserving rise times in USB 2.0 (480 Mbps), I²C, and HDMI DDC. For >400 Mbps differential links, lower-capacitance alternatives (e.g., ESDA25L at 50 pF) should be evaluated to avoid jitter or attenuation.