STMicroelectronics

ESDA25B1

ESDA25B1 Description

The ESDA25B1 from STMicroelectronics is a 24V bidirectional Zener TVS diode designed for general-purpose ESD protection in sensitive electronic circuits. Housed in an 8-SOIC package, it features 6 bidirectional channels, offering robust protection against transient voltage spikes with a minimum breakdown voltage of 25V and a peak pulse power rating of 150W. Compliant with ROHS3 and REACH standards, this device is ideal for applications requiring high reliability and environmental compliance. Its low clamping voltage ensures minimal stress on protected components, while the surface-mount design facilitates compact PCB integration.

ESDA25B1 Features

• Bidirectional Protection: 6 channels for comprehensive ESD/transient suppression.
• High Power Handling: 150W peak pulse power (8/20µs) for robust surge protection.
• Low Clamping Voltage: Efficiently limits overvoltage to safeguard downstream components.
• 24V Reverse Standoff: Optimized for 24V nominal systems with a 25V minimum breakdown.
• Surface-Mount Package: 8-SOIC for space-constrained designs.
• Compliance: ROHS3, REACH, and EAR99 certified, with MSL1 (unlimited) moisture sensitivity.
• Obsolete Status: Legacy-friendly but may require alternative sourcing for new designs.

ESDA25B1 Applications

• Industrial Electronics: Protects PLCs, sensors, and communication interfaces from ESD and surges.
• Consumer Devices: Shields USB ports, HDMI lines, and other high-speed data interfaces.
• Automotive Systems: Safeguards infotainment and control modules against load-dump transients.
• Telecom Infrastructure: Ensures reliability in base stations and networking equipment.
• Medical Equipment: Critical for patient-connected devices requiring fail-safe ESD protection.

Conclusion of ESDA25B1

The ESDA25B1 excels in multi-channel ESD protection with its bidirectional design, high power dissipation, and compact form factor. While marked as obsolete, its performance in 24V systems remains unmatched for legacy designs. Engineers should evaluate newer alternatives in the TRANSIL™ series for forward-looking projects, but the ESDA25B1 remains a proven choice for robust transient suppression in industrial, automotive, and consumer applications.