SM712-02HTG Littelfuse Automotive Diode

SM712 TVS Diode Array – RS-485 Surge & ESD Protection Diode
The SM712 TVS Diode Array is a high-performance transient voltage suppression solution specifically designed to protect RS-485 communication interfaces from electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surge events. Engineered for asymmetrical working voltages ranging from -7V to 12V, the SM712 delivers reliable circuit protection with low clamping voltage and excellent surge handling capability. It is ideal for industrial communication systems, embedded electronics, and data transmission applications requiring robust protection and long-term reliability.

Why it’s a System Essential:
• Specialized RS-485 Protection: Optimized for RS-485 communication systems with asymmetrical voltage support.
• Advanced ESD Protection: Withstands repetitive ESD strikes beyond IEC 61000-4-2 standards without degradation.
• High Surge Current Capability: Safely dissipates up to 19A of 8/20µs surge current.
• Lightning Surge Protection: Protects sensitive communication lines from lightning-induced transients.
• Low Clamping Voltage: Minimizes voltage stress on connected devices during surge events.
• Reliable Industrial Performance: Designed for stable operation in harsh electrical environments.
• Fast Transient Response: Quickly suppresses voltage spikes and electrical disturbances.

Technical Capabilities:
• Product Type: TVS (Transient Voltage Suppression) Diode Array
• Model: SM712
• Working Voltage Range: -7V to 12V
• Application: RS-485 interface protection
• Protection Types:
 • Electrostatic Discharge (ESD)
 • Electrical Fast Transients (EFT)
 • Lightning-induced surges
• Surge Current Handling: Up to 19A (8/20µs waveform)
• Standards Compliance:
 • IEC 61000-4-2 (ESD Protection)
 • IEC 61000-4-5 2nd Edition (Surge Protection)
• Performance: Low clamping voltage with high reliability

Best For:
Ideal for RS-485 communication systems, industrial automation, embedded systems, Arduino communication modules, IoT devices, surge protection circuits, data transmission equipment, PCB designs, industrial electronics, and electronic systems requiring advanced ESD and surge protection.