SMLJ170A

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The SMLJ170A is a unidirectional, high surge voltage transient suppressor in the TVS (transient voltage suppression) diodes range of products. The device is specifically designed for use in data and communication line protection.

When an excessive voltage surge appears, the SMLJ170A device will conduct current overload to ground. Unlike other protection products such as the Zener and avalanche diodes, the SMLJ170A is not temperature dependent. This makes the device suitable for a wide range of applications.

When properly installed, the SMLJ170A is a silent protector, meaning that it is normally off until a surge appears. As the device can absorb high energy pulses, it is typically used for applications requiring a rugged surge protection such as those related to automotive, industrial, CATV, and telecommunications.

The SMLJ170A device has a maximum peak pulse power rating of 70A and a steady state voltage rating of 170V. It features a low capacitance of 5pF when in off-state. The device is available in three package sizes including DO-214AB, SC-59, and SMAF. As the SMLJ170A is not reverse-bias breakdown sensitive, the device will be especially useful in applications that involve sharp rise waveforms or need protection from repetitive high energy transients.

The working principle of the SMLJ170A is quite simple. When an excessive voltage surge appears, the device will start conducting current to ground. This protects the connected circuit from being damaged by the surge. The device will then reset to its off-state after 1 ms in order to avoid damage to the device itself.

Overall, the SMLJ170A is a unidirectional, high surge voltage transient suppressor that is specifically designed for use in data and communication line protection. It is a rugged device that can absorb high energy pulses and is suitable in a wide range of application such as automotive, industrial, CATV, and telecommunications. The SMLJ170A has a maximum peak pulse power rating of 70A and a steady state voltage rating of 170V. The device works by conducting an overload current to ground when an excessive voltage surge appears in order to protect the connected circuit.

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