STMicroelectronics ESDA14V2-2BF3

Overview

ESDA14V2-2BF3 from STMicroelectronics is a quad-bidirectional Transil™ ESD protection array for symmetrical signal lines, featuring 14.2 V min. breakdown voltage, 12 V stand-off voltage, 3.2 Ω dynamic impedance, 6.5 pF capacitance at 0 V, and IEC 61000-4-2 Level 4 compliance (±15 kV air / ±8 kV contact discharge). It is used in high-density portable interfaces such as USB 2.0 data lines and HDMI hot-plug detection circuits.

For engineers reviewing the ESDA14V2-2BF3 datasheet, ESDA14V2-2BF3 pinout, ESDA14V2-2BF3 application, or ESDA14V2-2BF3 equivalent, key selection criteria include low clamping voltage (≤30 V @ 8 A), ultra-small flip-chip footprint (<1.5 mm²), bidirectional transient suppression, and compatibility with 400 µm pitch PCB layouts for space-constrained consumer electronics.

Technical Context

The device integrates two independent bidirectional Transil diode pairs in a monolithic flip-chip die, each pair configured as back-to-back Zener structures to clamp both positive and negative transients symmetrically. Its low 6.5 pF junction capacitance and 3.2 Ω dynamic impedance ensure minimal signal distortion on high-speed lines up to 480 Mbps.

Designed for surface-mount assembly with 400 µm bump pitch and 255 µm bump height, it uses solder bumps (not wire bonds) for interconnect, enabling direct die attachment to PCB pads without bond wires-reducing parasitic inductance and improving ESD response time below 1 ns.

Key Specifications

Pinout & Package

ESDA14V2-2BF3 uses a 4-bump flip-chip package (255 µm bump height, 400 µm pitch) with no external leads. The die is mounted bump-side-down directly onto PCB pads. Package outline measures 770 µm × 770 µm with 185 µm × 185 µm copper pads.

Key Features

Applications

Availability

ESDA14V2-2BF3 is available at Aetrix Electronics and suitable for USB interface protection, HDMI hot-plug circuits, smartphone audio jacks, and industrial RS-485 nodes requiring stable component supply and long-term lifecycle continuity.

Supply support for ESDA14V2-2BF3 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 silicon solutions for automotive, industrial, power management, and analog/mixed-signal applications.

The ESDA14V2-2BF3 belongs to ST's Transil™ ESD protection product line, engineered specifically for ultra-compact, high-speed signal line protection in consumer and portable electronics with strict board-area and capacitance constraints.

FAQ

What is the maximum peak pulse current the ESDA14V2-2BF3 can handle?

The ESDA14V2-2BF3 is rated for 8 A peak pulse current (8/20 µs waveform) with a clamping voltage ≤30 V. Its 50 W peak pulse power rating at Tj = 25 °C allows brief transient absorption without thermal failure, validated per IEC 61000-4-2 test conditions.

Can ESDA14V2-2BF3 be used on single-ended 3.3 V logic lines?

Yes - its 12 V stand-off voltage provides ample margin above 3.3 V rails, and its bidirectional structure clamps both polarities equally. Leakage remains ≤0.1 µA at 3.3 V, avoiding unintended logic level shifts or increased quiescent current in microcontroller I/O pins.

Is reflow soldering supported for the ESDA14V2-2BF3 flip-chip package?

Yes - the device supports standard Pb-free reflow profiles with peak temperature up to 260 °C for 10 seconds. Its ECOPACK® construction uses lead-free solder bumps compatible with IPC-J-STD-020D moisture sensitivity level 1, requiring no pre-bake for typical SMT assembly.

How does the 400 µm bump pitch impact PCB layout?

The 400 µm pitch requires precise stencil design (300 µm minimum opening) and fine-pitch PCB fabrication. Recommended pad size is 185 µm × 185 µm with 220 µm solder mask clearance. This enables routing between pads for dense layouts but demands alignment accuracy ≤25 µm during placement.