STMicroelectronics ESDA5V3L

Overview

ESDA5V3L from STMicroelectronics is a unidirectional dual Transil™ diode array for ESD protection of one or two signal lines, featuring 5.3 V (min) / 5.9 V (max) breakdown voltage, 220 pF line capacitance at 0 V bias, 300 W peak pulse power (8/20 µs), and 30 kV ESD immunity per IEC 61000-4-2 level 4-used in high-density USB, HDMI, and audio interface protection.

For engineers reviewing the ESDA5V3L datasheet, ESDA5V3L pinout, ESDA5V3L application, or ESDA5V3L equivalent, key selection criteria include clamping voltage (max 17 V at 25 A), low leakage (<20 µA at VBR), SOT23-3L footprint compatibility, and bidirectional operation capability via pins 1–2 only.

Technical Context

This device implements a dual-channel unidirectional TVS structure with common-cathode configuration in a 3-pin SOT23-3L package. Each channel provides independent ESD suppression with 5.3–5.9 V breakdown, 280 mΩ dynamic impedance, and 17 V max clamping at 25 A (8/20 µs).

It operates over –40 °C to +150 °C junction temperature, supports lead-free reflow per JEDEC J-STD-020, and achieves <10 nA leakage at 0 V bias-enabling use in low-power, high-impedance signal paths such as I²C, UART, and analog sensor interfaces.

Key Specifications

Pinout & Package

SOT23-3L surface-mount package: 1.5 mm × 1.3 mm footprint, 1.0 mm height, lead-free, RoHS-compliant, UL 94 V0 epoxy.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDA6V1L, ESDA5V3L offers lower clamping onset for 3.3 V I/O but higher line capacitance; versus TPD2E001DRYR, it trades ultra-low capacitance for broader thermal robustness (150 °C TJ max) and proven field reliability in automotive infotainment.

Availability

ESDA5V3L is available at Aetrix Electronics and suitable for USB interface protection, HDMI control channel safeguarding, and automotive audio I/O shielding requiring stable component supply across multi-year production cycles.

Supply support for ESDA5V3L 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, designing and manufacturing microcontrollers, power ICs, sensors, and protection devices for industrial, automotive, and consumer markets.

ESDA5V3L belongs to ST's ESDAL Transil™ array product line-engineered specifically for board-level ESD hardening of high-density, mixed-signal interfaces without compromising signal integrity or thermal performance.

FAQ

What is the maximum operating junction temperature for ESDA5V3L?

The ESDA5V3L supports continuous operation from –40 °C to +150 °C junction temperature, validated per absolute maximum ratings in ST's DocID7058 Rev 5. This range enables deployment in under-hood automotive modules and thermally constrained industrial enclosures without derating.

Can ESDA5V3L be used for bidirectional signal lines like RS-485?

Yes-by connecting only pins 1 and 2 (leaving pin 3 unconnected), ESDA5V3L functions as a symmetric bidirectional suppressor with ±5.3 V clamping. However, its 220 pF capacitance limits use to RS-485 data rates ≤10 Mbps; for higher speeds, consider lower-capacitance alternatives.

How does ESDA5V3L's clamping voltage compare to its breakdown voltage?

At 25 A (8/20 µs pulse), ESDA5V3L clamps to ≤17 V, while its minimum breakdown voltage is 5.3 V. The 11.7 V difference represents the dynamic voltage drop across its 280 mΩ impedance during surge conduction-ensuring protected ICs see less than half the peak transient energy.

Is ESDA5V3L compatible with lead-free reflow processes?

Yes-ESDA5V3L uses an ECOPACK®-compliant SOT23-3L package rated for lead-free reflow per JEDEC J-STD-020. Its maximum lead temperature is 260 °C for 10 s at 5 mm from case, matching standard Pb-free profile peaks without delamination or parametric shift.