STMicroelectronics ESDAVLC6-2BLY

Overview

ESDAVLC6-2BLY from STMicroelectronics is a dual-line, bidirectional automotive-grade transient voltage suppressor (TVS) designed for ESD and EOS protection of high-speed automotive bus interfaces. It features 6 V minimum breakdown voltage (V_BR), 1.2 pF typical junction capacitance (C_I/O-GND), 140 W peak pulse power (8/20 µs), and AEC-Q101 qualification-enabling robust protection in CAN FD, LIN, and infotainment data lines.

For engineers reviewing the ESDAVLC6-2BLY datasheet, ESDAVLC6-2BLY pinout, ESDAVLC6-2BLY application, or ESDAVLC6-2BLY equivalent, key selection criteria include low clamping voltage (12 V at 1 A), sub-100 nA leakage at 5 V, ISO 10605 ±13 kV contact discharge compliance, and SOT23-3L footprint compatibility with space-constrained automotive PCB layouts.

Technical Context

This dual-channel TVS employs silicon avalanche diode architecture optimized for fast response (<1 ns) to ESD transients while maintaining ultra-low signal path capacitance. Its symmetrical bidirectional structure ensures identical clamping behavior for positive and negative surges, critical for differential bus protection without polarity constraints.

The device meets stringent automotive immunity standards including ISO 10605 (150 pF/330 Ω, ±13 kV), ISO 7637-3 pulse 3a/3b (±150 V), and pulse 2a (±85 V), with a thermal design supporting continuous operation from –55 °C to +150 °C junction temperature.

Key Specifications

Pinout & Package

ESDAVLC6-2BLY is housed in a compact, surface-mount SOT23-3L package (3.04 mm × 1.75 mm × 1.3 mm) with gull-wing leads, ECOPACK2-compliant and optimized for automated reflow assembly per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-line automotive TVS applications.

Compared with NUP4201MR6T1G and SMA6J5.0A, ESDAVLC6-2BLY uniquely combines bidirectional dual-line integration, <1.2 pF capacitance, and SOT23-3L footprint-making it the only option for high-speed, space-limited automotive bus protection without compromising signal fidelity or layout density.

Availability

ESDAVLC6-2BLY is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and body electronics modules requiring stable component supply across extended product lifecycles.

Supply support for ESDAVLC6-2BLY 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, specializing in automotive, industrial, and power discrete technologies with over 40 years of automotive qualification expertise.

ESDAVLC6-2BLY belongs to ST's Automotive Transient Voltage Suppressor (TVS) product line, engineered specifically to meet OEM-level ESD immunity, signal integrity, and AEC-Q101 reliability requirements for next-generation vehicle networks.

FAQ

What is the maximum operating temperature for ESDAVLC6-2BLY?

The ESDAVLC6-2BLY has a specified junction temperature range of –55 °C to +150 °C, validated per AEC-Q101 stress tests. This allows deployment in under-hood environments (e.g., engine control units) and high-ambient cabin locations (e.g., center stack displays) without derating. Thermal resistance (R_θJA) is not published, but the SOT23-3L package supports ≥1.5 W dissipation in standard FR4 layouts with 1-in² copper pour.

Does ESDAVLC6-2BLY require external biasing or control signals?

No. ESDAVLC6-2BLY is a passive, bidirectional avalanche diode TVS with no external bias, enable pins, or control logic. It operates solely based on voltage threshold: conducting only when reverse voltage exceeds 6 V (V_BR), with automatic recovery after transient decay. No PCB routing for V_CC, GND, or logic signals is required beyond its three pins.

Can ESDAVLC6-2BLY protect USB 2.0 or Ethernet interfaces?

It is not recommended for USB 2.0 (480 Mbps) or Ethernet (100BASE-TX) due to insufficient bandwidth margin: its S21 –3 dB point is 3 GHz, which supports up to ~1.5 Gbps NRZ signaling. While usable on slower automotive Ethernet variants (e.g., 100BASE-T1 with 66 MHz fundamental), it lacks the 5+ GHz bandwidth and differential impedance matching of dedicated high-speed ESD arrays like ST's ESDALC6-1BM2.

How does the clamping voltage change with temperature?

V_CL increases with junction temperature at a coefficient α_T = 9 × 10^–4/°C, per datasheet Equation 1. At 125 °C, V_CL @ 1 A rises by ~0.9 V above room-temperature value (12 V), reaching ~12.9 V. This predictable drift is factored into automotive safety margins and does not trigger thermal runaway, as the device remains within its 140 W pulse rating.