STMicroelectronics ESDA5V3SC6Y

Overview

ESDA5V3SC6Y from STMicroelectronics is an automotive-grade quad unidirectional Transil™ TVS diode array for ESD and EOS protection on high-speed data lines. It features 5.3 V breakdown voltage (min), 22 A peak pulse current (8/20 µs), 300 W peak pulse power, and AEC-Q101 qualification-designed for CAN, LIN, and USB interfaces in infotainment and body control modules.

For engineers reviewing the ESDA5V3SC6Y datasheet, ESDA5V3SC6Y pinout, ESDA5V3SC6Y application, or ESDA5V3SC6Y equivalent, key selection criteria include clamping voltage at 21 V (I_PP = 22 A), low leakage (<2 µA @ 5.3 V), 320 pF line capacitance, and SOT23-6L package compatibility with high-density automotive PCB layouts.

Technical Context

The ESDA5V3SC6Y integrates four independent unidirectional TVS elements in a single monolithic silicon chip, each configured as a low-capacitance clamp between I/O line and ground. Its architecture delivers fast response (<1 ns) to ESD transients while maintaining tight V_BR tolerance (5.3–5.9 V) and stable clamping performance across -40 °C to +150 °C junction temperature.

It meets ISO 10605 (±30 kV air/contact discharge) and ISO 7637-2 Pulse 2a (+50 V) requirements, but excludes Pulse 1 and Pulse 3a/b due to its 5.3 V V_BR being below 13.5 V battery voltage-confirming its targeted use on low-voltage signal lines rather than power rails.

Key Specifications

Pinout & Package

SOT23-6L surface-mount package with 1.45 mm height, 3.05 mm length, and 1.75 mm width; RoHS-compliant, lead-free, UL94 V0 epoxy molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDA6V1SC6Y and TPD4E001DQAR, ESDA5V3SC6Y uniquely balances low-voltage clamping (5.3 V), automotive qualification, and robust 300 W pulse handling-making it the only option validated for CAN/LIN nodes in AEC-Q101-compliant vehicle architectures.

Availability

ESDA5V3SC6Y is available at Aetrix Electronics and suitable for automotive infotainment systems, body electronics control units, and sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ESDA5V3SC6Y 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 management ICs with vertical manufacturing capabilities and broad automotive qualification expertise.

The ESDAxxSCxY series belongs to ST's Transil™ automotive TVS portfolio, engineered specifically to replace discrete diode solutions in space-constrained, high-reliability signal-line protection applications across modern vehicle networks.

FAQ

What is the maximum clamping voltage of ESDA5V3SC6Y at 22 A?

The maximum clamping voltage (V_CL) is 21 V under 8/20 µs waveform conditions at 22 A peak pulse current, measured per IEC 61000-4-5. This value ensures safe operation for 5 V logic systems with sufficient margin above V_CC, and is guaranteed across the full -40 °C to +150 °C operating junction temperature range.

Is ESDA5V3SC6Y suitable for protecting CAN FD interfaces?

Yes-its 320 pF line-to-ground capacitance and 21 V clamping voltage meet CAN FD signal integrity requirements up to 5 Mbps. The device's fast response time (<1 ns) and low dynamic impedance prevent bit errors during ESD events, and its AEC-Q101 qualification confirms suitability for automotive CAN FD nodes in body and powertrain domains.

Does ESDA5V3SC6Y support bidirectional signal lines like RS-485?

No-ESDA5V3SC6Y is strictly unidirectional and designed for single-ended or differential lines referenced to ground (e.g., CAN, LIN, USB). For true bidirectional protection such as RS-485, ST recommends the ESDALC6V1-1U2 or ESDALC12-1U2 series, which feature symmetrical breakdown and clamping characteristics for ±12 V common-mode tolerance.

What is the recommended PCB layout for optimal ESD performance?

Minimize trace inductance by placing ESDA5V3SC6Y within 5 mm of the protected connector, using short, wide traces to ground, and avoiding vias in the protection path. ST recommends closed vias near pads, symmetrical pad geometry, and a solid ground plane beneath the device to ensure low-impedance return paths and consistent clamping behavior during multi-kV ESD events.