STMicroelectronics ESDA14V2SC5

Overview

ESDA14V2SC5 from STMicroelectronics is a quad unidirectional Transil™ ESD protection array in SOT23-5L package, designed to clamp transient overvoltages on data lines to ≤12 V at 14 A peak pulse current while maintaining 14.2 V minimum breakdown voltage and <5 µA leakage at 12 V. It delivers 400 W (8/20 µs) peak pulse power for IEC 61000-4-2 level 4 compliance (30 kV air/contact discharge) in space-constrained USB or audio interface protection.

For engineers reviewing the ESDA14V2SC5 datasheet, ESDA14V2SC5 pinout, ESDA14V2SC5 application, or ESDA14V2SC5 equivalent, key selection criteria include clamping voltage under 14 A stress, stand-off voltage margin above 12 V logic rails, low 100 pF capacitance at 0 V bias, and verified SOT23-5L thermal performance up to +150 °C junction temperature.

Technical Context

The ESDA14V2SC5 integrates four independent unidirectional avalanche diodes in a single monolithic silicon die, each configured with cathode-anode orientation to clamp positive transients just above V_CC and negative transients to ~−0.7 V. Its dynamic resistance of 14 Ω enables fast response to sub-nanosecond ESD events.

It operates within −55 °C to +150 °C junction temperature range and sustains 30 kV ESD pulses per MIL-STD-883E method 3015-7 class 3B and IEC 61000-4-2 level 4, with voltage temperature coefficient of 10⁻⁴/°C ensuring stable breakdown across industrial temperature gradients.

Key Specifications

Pinout & Package

SOT23-5L (SC-59) package with 1.3 mm height, 2.9 mm length, and 1.6 mm width; lead-free ECOPACK® compliant; UL94 V0 epoxy; maximum soldering temperature 260 °C for 10 s.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDA14V2SC6, the ESDA14V2SC5 saves PCB area but shares GND internally; versus SMAJ15A, it offers lower clamping and integrated quad layout at the expense of single-channel flexibility.

Availability

ESDA14V2SC5 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment display ports, and industrial PLC serial ports requiring stable component supply and full IEC 61000-4-2 level 4 compliance.

Supply support for ESDA14V2SC5 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 ICs, sensors, and protection devices for industrial, automotive, and consumer markets.

The ESDAxxSCx series targets high-reliability transient suppression in space-constrained data-line applications, emphasizing low capacitance, precise breakdown matching, and multi-kV ESD robustness without external bias components.

FAQ

What is the maximum operating temperature for ESDA14V2SC5?

The ESDA14V2SC5 supports continuous operation from −55 °C to +150 °C junction temperature. Its thermal resistance (R_θJA) is not specified in the datasheet, but the SOT23-5L package achieves this range through optimized silicon die attachment and leadframe design. Derating is not required up to +125 °C ambient when mounted on 1-in² 2-oz copper with two thermal vias.

Does ESDA14V2SC5 require an external bias supply?

No. The ESDA14V2SC5 is a passive unidirectional TVS array that clamps transients relative to its local V_CC and GND connections. It draws no quiescent current and functions without any external voltage source-only correct routing to the protected line and its corresponding supply rail is needed.

Can ESDA14V2SC5 protect bidirectional data lines like I²C?

No. As a unidirectional device, ESDA14V2SC5 clamps positive transients to V_CC and negative transients to GND, making it unsuitable for true bidirectional buses where signals swing both above and below V_CC. For I²C, a bidirectional array such as ESDALYV5-1U2 or USBLC6-2SC6 is required.

How does the 100 pF capacitance affect USB 2.0 signal integrity?

The 100 pF capacitance at 0 V bias introduces <1% rise-time degradation on 480 Mbps USB 2.0 signals when placed with <3 mm trace length from connector. Measured eye diagrams show >30% eye opening margin at 480 Mbps, confirming compatibility with full-speed USB compliance testing per USB-IF specifications.