BOURNS SMCJ12A TVS Diode, Unidirectional, 12V, 19.9V, SMC Package

The BOURNS SMCJ12A is a robust, surface-mount transient voltage suppression (TVS) diode engineered to shield sensitive electronic components from damaging voltage spikes. These transients can be caused by a variety of sources, including lightning strikes, the switching of inductive loads, and electrostatic discharge (ESD). Its fast-acting design offers a critical first line of defence, clamping hazardous over-voltages to a safe level almost instantaneously.

Housed in a compact and industry-standard DO-214AB (SMC) package, this unidirectional diode delivers a high 1500W peak pulse power rating. This combination of a swift sub-nanosecond response time and substantial surge handling capability makes it a highly reliable solution for demanding environments where circuit integrity is paramount.

Key Applications

This TVS diode is ideally suited for integration into a wide range of electronic systems. Its primary role is the protection of DC power supply lines from external and internal transients. It finds extensive use in automotive electronics, safeguarding control units and infotainment systems. Furthermore, it is a trusted component in industrial control systems, programmable logic controllers, and communication equipment such as routers and network switches.

Technical Specifications

• Type: Unidirectional TVS Diode
• Package / Case: DO-214AB (SMC)
• Mounting Type: Surface Mount
• Number of Pins: 2
• Stand-off Voltage (V_RWM): 12 V
• Breakdown Voltage (V_BR): 13.3 V (minimum)
• Clamping Voltage (V_C): ~19.9 V at 31.4 A
• Peak Pulse Power Dissipation: 1500 W (10/1000 μs waveform)
• Peak Pulse Current (I_PP): ~31.4 A
• Response Time: < 1 ns
• Operating Temperature Range: -55°C to +150°C
• Product Range: SMCJ Series
• Dimensions (L x W x H): 43 mm x 33 mm x 15 mm <