1.5KE400CA – GENERAL SEMICONDUCTOR

Overview

The Littelfuse 1.5KE400CA is a robust bidirectional Transient Voltage Suppressor (TVS) diode designed to safeguard sensitive electronic components from damaging voltage transients. Its primary function is to clamp overvoltage events to a safe level, with a critical characteristic being its high peak pulse power dissipation of 1.5 kW, enabling it to absorb significant energy surges. A key design consideration when implementing this device is the trade-off between its relatively high clamping voltage (548V at 10/1000µs) and the need for precise overvoltage protection; designers must ensure the protected circuitry’s breakdown voltage is sufficiently above this clamp level to prevent damage during a transient event.

Key Features

• Bidirectional 1-Channel ESD Protection
• Working Voltage: 342 V
• Breakdown Voltage: 380 V
• Clamping Voltage: 548 V (at 10/1000µs)
• Peak Pulse Power Dissipation (Pppm): 1.5 kW
• Package: DO-201-2 (Axial)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Protection of AC line inputs against lightning-induced surges and switching transients.
• Robust overvoltage clamping for power supply outputs in industrial control systems.
• ESD mitigation in high-voltage test and measurement equipment.
• Transient suppression for telecommunication equipment exposed to external surges.