The SMCJ70A-E3 is a transient voltage suppressor (TVS) diode manufactured by Vishay. It is designed to protect sensitive electronic components from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events.

Applications

• I/O ports
• Data lines
• Power lines
• Microprocessor protection
• Sensitive electronic equipment

Features

• Unidirectional TVS diode
• Surface mount package (SMC)
• Low clamping voltage
• Fast response time
• High surge capability
• Glass passivated junction
• RoHS compliant

Benefits

• Provides robust protection against voltage transients
• Prevents damage to sensitive electronic components
• Improves system reliability
• Simplifies circuit design
• Meets environmental regulations

Additional Details

The SMCJ70A-E3 has a standoff voltage (VRWM) of 70V. It's designed to start conducting when the voltage exceeds its breakdown voltage (VBR), typically around 77.8V. It has a peak pulse power dissipation (PPPM) capability of around 1500W for a 10/1000µs waveform. The clamping voltage (VC) is the voltage across the diode when it is conducting the peak pulse current. The response time is very fast, typically less than 1 picosecond. The operating temperature range is typically -55°C to +150°C. The SMC (Surface Mountable Component) package is compact and easy to mount on PCBs. The glass passivated junction ensures high reliability and stability. Detailed electrical characteristics, surge waveforms, and package dimensions are available in the Vishay product datasheet. Proper PCB layout is important to minimize inductance and optimize transient protection performance.