Infineon TVS3V3L4UE6327HTSA1: Key Specifications and Circuit Protection Applications

In the realm of electronics design, safeguarding sensitive components from transient overvoltage events is paramount. The Infineon TVS3V3L4UE6327HTSA1 stands out as a highly effective and miniaturized solution for this critical task. This device is a four-line unidirectional Transient Voltage Suppression (TVS) diode array in an ultra-small SOT1438-4 (TSNP-12-4) package, specifically engineered to protect voltage-sensitive data and signal lines.

Key Specifications

The TVS3V3L4UE6327HTSA1 is characterized by a set of robust electrical parameters that define its protective capabilities:

Standoff Voltage (V_{RWM}): 3.3 V. This is the maximum continuous operating voltage the device can withstand without conducting, making it ideal for standard 3.3V logic interfaces like USB, HDMI, or serial communication ports.

Breakdown Voltage (V_{BR}): 4 V (min). The voltage at which the device begins to conduct significantly, clamping the overvoltage event.

Clamping Voltage (V_{CL}): 9.2 V at I_{PP} = 5.5 A. This is a crucial specification, representing the maximum voltage let through to the protected IC during a high-current surge. A low clamping voltage is essential for protecting modern low-voltage semiconductors.

Peak Pulse Current (I_{PP}): 5.5 A (8/20 µs waveform). This indicates the device's ability to handle a substantial amount of transient current, demonstrating its robustness against severe electrical surges.

Low Leakage Current (I_R): < 1 µA. This ensures minimal power loss and no interference with the normal operation of the circuit during standard conditions.

Ultra-Low Capacitance: Typically 17 pF per line. This is a critical feature for protecting high-speed data lines (e.g., USB 2.0/3.0, Ethernet, DisplayPort), as it prevents signal integrity degradation, distortion, and bit errors.

Circuit Protection Applications

The primary function of this TVS array is to provide a robust defense against Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), and other voltage transients. Its design makes it exceptionally suitable for a wide range of applications:

USB 2.0/3.0 Ports: Protecting both data lines (D+, D-) and power lines (VBUS) from ESD strikes that can occur during hot-plugging.

HDMI and Display Interfaces: Safeguarding high-speed TMDS data lines from transient events that could damage expensive source and display equipment.

Audio/Video Inputs and Outputs: Shielding sensitive audio and video signal processing ICs.

Serial Communication Lines: (e.g., RS-232, RS-485, UART, CAN Bus) ensuring reliable data transmission in industrial and automotive environments.

General-Purpose I/O Protection: Any connector or interface that is exposed to the external environment is a potential entry point for ESD; this diode array offers a compact protection scheme.

ICGOOODFIND: The Infineon TVS3V3L4UE6327HTSA1 is an optimal choice for designers seeking reliable, high-performance circuit protection. Its combination of a low 3.3V standoff voltage, a tight clamping profile, and ultra-low capacitance makes it an indispensable component for ensuring the reliability and longevity of modern electronic devices, particularly those utilizing high-speed data interfaces.

Keywords: TVS Diode Array, ESD Protection, Circuit Protection, Low Capacitance, 3.3V Interface