SR70.TCT Circuit Protection

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SR70 series of Transient Voltage Suppressors (TVS) Diodes protect sensitive circuit components from transient voltage overshoots that increase power supply ripple and other electrical disturbances. They are specifically designed for medium to high power applications where low stand-off voltage and fast response time are critical. SR70 is typically used in automotive, industrial, and consumer electronics, power supplies, and telecom applications that encounter power disturbances.

SR70 series is capable of suppressing high peak power surge up to a 70A peak impulse current and utilizes a glass passivated junction to ensure reliable protection. Its reliable protection is also maintained over a wide temperature range, an operational temperature range of -55°C to +125°C. SR70’s extremely fast response time of 17 nanoseconds makes it ideal for applications that require a fast response time.

SR70 series provides a low stand-off voltage of 5V to 50V, and is available in many package styles, such as SMB/SMC, DO-41, and SOT-23. This makes SR70 ideal for a variety of applications across many industries. In addition, SR70 implements a reverse current protection, producing an avalanche breakdown with a low clamping voltage and low leakage current.

The working principle behind SR70 is based on the principle of junction breakdown. When a voltage surge is applied above the specified stand-off voltage, current begins to flow and creates a local heat spike that melts the junctions. This results in the formation of a conductive path that diverts the voltage to a safe or non-damaging level. The voltage is then clamped at a safe operating level, protecting the sensitive components.

The SR70 series of products is ideal for a variety of applications, which is why they are so widely used in the automotive, industrial, consumer electronics, telecommunication, and power supply industries. Its features, such as a low stand-off voltage, fast response time, glass passivated junction, and reverse current protection, make it an ideal choice for providing reliable protection in these types of sensitive applications.

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