STMicroelectronics ESDA5V3SC6

Overview

ESDA5V3SC6 from STMicroelectronics is a quad unidirectional Transil™ ESD protection array in SOT23-6L package, designed to clamp transient overvoltages on data lines to ±5.3 V breakdown and 21 V clamping at 22 A peak pulse current. It delivers 400 W (8/20 µs) peak pulse power, meets IEC 61000-4-2 Level 4 (30 kV air/contact discharge), and is rated for -55 °C to +150 °C operation.

For engineers reviewing the ESDA5V3SC6 datasheet, ESDA5V3SC6 pinout, ESDA5V3SC6 application, or ESDA5V3SC6 equivalent, this device is selected for high-density board-level ESD protection of USB, HDMI, audio, and serial interfaces where low capacitance (320 pF @ 0 V), low leakage (<1 µA @ 5 V), and fast response to ±30 kV ESD events are critical.

Technical Context

The ESDA5V3SC6 integrates four independent unidirectional avalanche diodes in a single monolithic silicon chip, each configured with anode-to-ground and cathode-to-line topology. It operates with a stand-off voltage of 5 V, breakdown at 5.3–5.9 V (min/max), and clamps transients to ≤21 V at 22 A - enabling robust protection without interfering with 5 V logic signaling.

Its dynamic resistance is 5 Ω, forward voltage drop is 1.25 V at 200 mA, and junction capacitance is 320 pF at 0 V bias - parameters optimized for high-speed digital interfaces while maintaining low signal distortion and insertion loss.

Key Specifications

Pinout & Package

SOT23-6L (SC-59) surface-mount package: 6-pin, lead-free, RoHS-compliant, UL94 V0 epoxy body, 1.45 mm height typical, 2.95 mm × 1.65 mm footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDA5V3SC5 and TPD4E001DRYR, the ESDA5V3SC6 uniquely balances 30 kV robustness, quad-channel flexibility, and 320 pF capacitance - making it optimal for cost-sensitive, space-constrained 5 V interface protection where moderate speed and maximum ESD margin are prioritized.

Availability

ESDA5V3SC6 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC line safeguarding, and smartphone audio jack ESD hardening requiring stable component supply across production lifecycles.

Supply support for ESDA5V3SC6 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 Transil™ ESDAxxSCx product line targets board-level transient suppression in high-density electronics, emphasizing IEC 61000-4-2 compliance, low clamping, and monolithic integration for data-line protection.

FAQ

What is the maximum peak pulse current the ESDA5V3SC6 can handle?

The ESDA5V3SC6 is rated for 22 A peak pulse current under an 8/20 µs waveform, corresponding to its 400 W peak pulse power rating. This value is validated per IEC 61000-4-2 testing conditions and reflects the maximum transient current the device clamps without failure at 25 °C ambient.

Can ESDA5V3SC6 be used on 3.3 V logic lines?

Yes - its 5.3 V minimum breakdown voltage provides sufficient margin above 3.3 V rail, and its clamping voltage remains below 21 V even at 22 A, well within safe operating limits of 3.3 V interface ICs. The 1 µA leakage at 5 V ensures no functional impact on 3.3 V pull-ups or open-drain buses.

Does ESDA5V3SC6 support bidirectional ESD protection?

No - ESDA5V3SC6 is strictly unidirectional: each channel clamps positive transients to VCC and negative transients to GND. For bidirectional protection (e.g., AC-coupled lines), a dual-diode configuration or dedicated bidirectional array like ESDALC6V1 is required.

Is the SOT23-6L package lead-free and RoHS compliant?

Yes - the ESDA5V3SC6 is supplied in an ECOPACK®-certified SOT23-6L package, fully lead-free and compliant with RoHS Directive 2011/65/EU. Its epoxy meets UL94 V0 flammability standard, and JEDEC JESD97 second-level interconnect category is marked on inner box labels.