The SM2100A is a Transient Voltage Suppressor (TVS) diode manufactured by UNIOHM CORPORATION. It is specifically designed to protect sensitive electronic equipment from voltage transients induced by events such as electrostatic discharge (ESD), electrical fast transients (EFT), and lightning surges. The SM2100A provides a fast response and robust clamping performance, ensuring the reliable operation of protected circuits.

Applications:

• Protection of I/O ports
• Data lines and signal lines
• Microcontroller inputs
• Industrial control equipment
• Consumer electronics (e.g., smartphones, tablets)

Features:

• Unidirectional TVS diode
• Low clamping voltage
• Fast response time
• High surge capability
• Surface mount packaging (typically SMB/DO-214AA)
• RoHS compliant

Benefits:

• Provides robust protection against voltage transients
• Improves the reliability and lifespan of electronic devices
• Reduces the risk of equipment failure and downtime
• Simplifies compliance with industry standards for ESD and surge immunity
• Easy integration into existing circuit designs

Additional Details:

The SM2100A is typically available in a SMB (DO-214AA) surface mount package. Key electrical characteristics include a standoff voltage of 21V, breakdown voltage above 23V, and a low clamping voltage to ensure minimal voltage stress on protected components. The peak pulse power dissipation is often rated at 400W or 600W for a 10/1000µs waveform, depending on the specific datasheet revision. It is essential to consult the UNIOHM datasheet for the SM2100A to obtain precise specifications, including surge current ratings, operating temperature range, and detailed clamping voltage characteristics. Proper PCB layout is crucial for effective TVS diode operation. Short trace lengths and close placement to the protected circuit are recommended to minimize inductance. The fast response time of the SM2100A ensures that transient voltages are quickly clamped, preventing damage to sensitive electronics. Its rugged construction and reliable performance make it a popular choice for protecting a wide range of electronic devices from transient voltage threats.