SMAJ78A-AT 78V 400W TVS Diode SMA/DO-214AC | RUILON

The SMAJ78A-AT TVS Diode from RUILON is a 400W transient voltage suppressor designed to protect sensitive electronic circuits from lightning surges, voltage spikes, and electrostatic discharge (ESD). Built with advanced avalanche breakdown technology, it delivers fast response time and stable clamping performance, ensuring reliable protection for modern electronic systems operating in high-noise and surge-prone environments.

With a working peak reverse voltage of 78V, the SMAJ78A-AT is suitable for DC power line protection in consumer electronics, communication equipment, industrial control systems, and embedded applications. Its 400W peak pulse power rating (10/1000µs waveform) provides effective suppression of transient energy while maintaining low leakage current and high reliability.

Encapsulated in a compact SMA (DO-214AC) surface-mount package, the device supports high-density PCB layouts and offers strong thermal stability under repeated surge conditions. It ensures consistent long-term performance, making it a dependable solution for protecting sensitive semiconductor components in compact electronic designs.

Key Features:

• 400W peak pulse power dissipation (10/1000µs)
• 78V working peak reverse voltage
• Fast response to transient voltage spikes
• Low leakage current and high reliability
• Strong clamping capability for ESD protection
• Compact SMA (DO-214AC) SMD package

Applications:

• DC power line protection
• Consumer electronics
• Communication systems
• Industrial control systems
• Embedded electronic circuits
• Portable electronic devices