STMicroelectronics ESDA6V1BC6

Overview

ESDA6V1BC6 from STMicroelectronics is a quad bidirectional Transil™ TVS array in SOT23-6L package, designed for board-level ESD protection of up to four symmetrical signal or V_CC lines. It delivers ±6.1 V standoff voltage, 12 V clamping at 1 A, <1 µA leakage at 5 V, 80 W peak pulse power (8/20 µs), and meets IEC61000-4-2 Level 4 (15 kV air / 8 kV contact) - used in USB, HDMI, and Ethernet port protection on printers and communication systems.

For engineers reviewing the ESDA6V1BC6 datasheet, ESDA6V1BC6 pinout, ESDA6V1BC6 application, or ESDA6V1BC6 equivalent, key selection criteria include clamping voltage under 12 V at 1 A, junction capacitance ≤20 pF at 0 V bias, bidirectional symmetry, SOT23-6L footprint compatibility, and compliance with MIL-STD-883E Class 3 HBM and IEC61000-4-2 Level 4.

Technical Context

The ESDA6V1BC6 integrates four independent, matched bidirectional TVS diodes in a single monolithic silicon array. Each channel provides symmetrical breakdown at ±6.1 V (min), clamps transients to ≤12 V (typ.) at 1 A, and exhibits ≤3 Ω dynamic resistance - enabling fast response (<1 ns) to ESD events while maintaining low capacitive loading (20 pF max at 0 V).

Its design targets high-density PCB layouts where minimal trace inductance is critical: the SOT23-6L package places all six terminals (four anode/cathode pairs + two common ground pins) in a compact 3.05 × 1.75 mm outline, supporting direct placement adjacent to connectors without routing compromise.

Key Specifications

Pinout & Package

SOT23-6L package: 3.05 mm × 1.75 mm × 1.30 mm body, gull-wing leads, 0.95 mm pitch, 16.7 mg weight, tape-and-reel packaging (3000 pcs/reel). RoHS-compliant, rated for -40°C to +125°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPD4E001DQAR and SP3012-04UTG, ESDA6V1BC6 offers optimal balance of clamping voltage (12 V), capacitance (20 pF), and surge rating (80 W) for cost-sensitive industrial and consumer USB/HDMI interfaces - delivering proven field reliability without over-engineering.

Availability

ESDA6V1BC6 is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI DDC line safeguarding, and industrial RS-232/485 interface hardening requiring stable component supply across production lifecycles.

Supply support for ESDA6V1BC6 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The ESDA6V1BC6 belongs to ST's Transil™ TVS portfolio, engineered specifically for board-level ESD suppression in space-constrained digital interfaces - emphasizing low capacitance, precise bidirectional symmetry, and IEC-compliant robustness.

FAQ

What is the maximum operating temperature range for ESDA6V1BC6?

The ESDA6V1BC6 is rated for continuous operation from -40°C to +125°C ambient temperature. Its junction temperature limit is 150°C, and derating curves in the datasheet show peak pulse power decreases linearly above 25°C - e.g., 60 W at 85°C ambient. This makes it suitable for enclosed industrial enclosures without active cooling.

Can ESDA6V1BC6 protect both power (V_CC) and signal lines simultaneously?

Yes - its bidirectional architecture and ±5 V standoff voltage allow use on 3.3 V or 5 V V_CC buses as well as data lines. For V_CC protection, connect one channel between rail and ground; for signal lines, place across differential or single-ended traces. Clamping voltage remains ≤12 V, ensuring downstream ICs stay within absolute maximum ratings.

How does the SOT23-6L package affect PCB layout for optimal ESD performance?

Optimal layout requires placing ESDA6V1BC6 within 3 mm of the protected connector, routing protected signals directly to Pins 1/3/5, and connecting Pins 2/4/6 to a solid ground plane via multiple vias. The SOT23-6L's 0.95 mm pin pitch and shared ground pins minimize loop inductance - critical for sub-1 ns ESD response and preventing ground bounce during multi-kV discharges.

Is ESDA6V1BC6 compliant with automotive AEC-Q200 standards?

No - ESDA6V1BC6 is not AEC-Q200 qualified. It meets IEC61000-4-2 Level 4 and MIL-STD-883E Class 3 HBM, making it suitable for commercial and industrial applications. For automotive use, ST recommends the AEC-Q200-qualified ESDALY6V1-1U2 or SM712 series, which offer extended temperature range and vibration tolerance.