STMicroelectronics ESDA14V2LY

Overview

ESDA14V2LY from STMicroelectronics is an AEC-Q101-qualified dual unidirectional Transil™ diode array for automotive ESD protection. It provides 14.2–15.8 V breakdown voltage, 300 W peak pulse power (8/20 µs), 14 A peak pulse current, and 90 pF line capacitance at 0 V bias. It protects two signal lines in infotainment interfaces against ±30 kV contact/air discharge per ISO 10605.

For engineers reviewing the ESDA14V2LY datasheet, ESDA14V2LY pinout, ESDA14V2LY application, or ESDA14V2LY equivalent, key selection criteria include clamping voltage (≤24 V at 14 A), low leakage (<5 µA at VRM), SOT23-3L footprint compatibility, and compliance with ISO 7637-3 fast/slow transients for automotive signal lines.

Technical Context

This device implements a dual-channel unidirectional TVS architecture with independent cathode-anode paths per channel, enabling discrete line-level protection without shared ground coupling. Each channel exhibits 12 Ω dynamic impedance and a 11 V clamping voltage at 14 A, ensuring predictable voltage limiting during ESD events.

It operates across –40 °C to +150 °C junction temperature and supports bidirectional suppression when only pins 1 and 2 are used-leveraging internal series connection of two diodes. Its 90 pF capacitance at 0 V bias maintains signal integrity for high-speed data lines up to ~100 MHz.

Key Specifications

Pinout & Package

ESDA14V2LY is housed in a standard SOT23-3L package (JEDEC TO-236AB), measuring 2.9 × 1.3 × 1.0 mm, with gull-wing leads and lead-free matte tin plating compliant with RoHS and ECOPACK® standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual unidirectional TVS array applications.

Compared with ESDA6V1LY and ESDA25LY, ESDA14V2LY uniquely balances 12 V system compatibility, 90 pF bandwidth, and 24 V clamping-making it optimal for automotive LIN, FPD-Link, and USB 2.0 interfaces where VBR must exceed nominal rail but remain below IC absolute maximum ratings.

Availability

ESDA14V2LY is available at Aetrix Electronics and suitable for automotive infotainment interfaces, body control module signal protection, and ADAS camera data links requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ESDA14V2LY 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, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and protection ICs for automotive, industrial, and consumer markets.

ESDA14V2LY belongs to the ESDALY automotive Transil™ array product line, engineered specifically for robust, space-efficient ESD and transient protection in safety-critical vehicle subsystems operating from –40 °C to +150 °C.

FAQ

What is the maximum clamping voltage of ESDA14V2LY at 14 A?

The maximum clamping voltage is 24 V under 8/20 µs waveform conditions at 14 A peak pulse current, measured per IEC 61000-4-2 and ISO 10605 standards. This value ensures protected ICs such as LIN transceivers remain within their absolute maximum voltage ratings during ESD events.

Can ESDA14V2LY be used for bidirectional protection?

Yes-by connecting only pins 1 and 2 (leaving pin 3 unconnected), the device functions as a bidirectional suppressor with symmetrical breakdown in both directions. However, this reduces effective standoff voltage to approximately half the rated VBR and increases capacitance slightly due to series diode configuration.

Is ESDA14V2LY compatible with lead-free reflow processes?

Yes-it uses a lead-free matte tin finish and is qualified for standard Pb-free reflow profiles, including ST's recommended profile with peak temperature ≤260 °C for 10 seconds. The SOT23-3L package meets JEDEC J-STD-020 moisture sensitivity level MSL3.

How does ESDA14V2LY differ from ESDA5V3LY in system-level protection?

ESDA14V2LY offers higher breakdown (14.2–15.8 V vs. 5.3–5.9 V) and lower capacitance (90 pF vs. 220 pF), making it suitable for 12 V automotive buses like LIN and FPD-Link, whereas ESDA5V3LY targets 3.3 V/5 V logic and USB data lines where tighter clamping and higher capacitance tolerance exist.