3.0SMCJ90CATR Circuit Protection

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3.0SMCJ90CATR, part of the TVS - Diodes product range, is designed to provide protection against possible sudden bursts of high transient voltage. Drawing on a solid state silicon technology, this diode typically provides solutions for surge and voltage clamping applications and enables the achievement of a high level of lightning and ESD protection.

3.0SMCJ90CATR is designed to varistor-like clamping action for positive or negative, transient overvoltage protection of power or signal lines. With a tight clamping voltage of 6.0 ~ 9.0V, it is ideal for protecting sensitive electronics on high speed data lines from possible damage caused by electrostatic discharge (ESD), inductive load switching, and other transient events. The low dynamic clamping characteristics of this diode provides a low residual capacitance which increases system noise immunity and signal quality on data lines.

When 3.0SMCJ90CATR is used in an overvoltage transient application, what happens is that the VBR clamping voltage of this diode effectively clamps the voltage during a transient introduction, and absorbs the energy by dissipating it in the form of heat. When the transient current passes through the diodes clamping action, the output voltage drops and the energy dissipation occurs. As the transient current decreases, the diode can absorb the remaining energy by dissipating it in the form of heat. The advantage of 3.0SMCJ90CATR is that it can provide a very effective protection that will reduce the risk of damage, compared with older protection technologies such as MOVs which can easily fail during high energy events.

3.0SMCJ90CATR is ideally suited for applications requiring high performance ESD and lightening protection. It is widely used in communication, industry control, consumer electronics, computers/peripherals, automotive electronics and medical applications. Some application areas for 3.0SMCJ90CATR include:

• Telecommunications: Phone lines, PBX/DSL/Cable-modems, Ethernet, etc.
• Computer and Peripheral systems: PC motherboards, modems, hard drives, CD/DVD-ROM Drives, keyboards, etc.
• Automotive electronics: engine control modules, sensors, ECU controllers, airbags, seatbelts, etc.
• Industrial control systems: PLCs, sensors, SCADA systems, etc.
• Consumer electronics: Audio/Video products, portable devices, home appliances, etc.

3.0SMCJ90CATR is designed to clamp transient voltages, with a typical breakdown voltage of 12V. To provide an additional layer of protection, the diode is designed with an avalanche clamping characteristic. This device has a low dynamic impedance that prevents overshoot and extinguishes the injected current, thus protecting the device from further damage.

3.0SMCJ90CATR is a low cost device that offers superior protection and superior performance over the traditional silicon PN junction devices. In addition, due to the low dynamic impedance, the device allows for faster transient responses and enhanced protection capability. It also offers a wide range of features, including high surge capability, low capacitance, small size, low power consumption, high operating voltage, and wide operating temperature range.

In summary, 3.0SMCJ90CATR is a versatile device designed to provide effective protection in a variety of applications. It is designed with innovative solid state silicon nanotechnology which allows for higher surge ratings and dynamic clamping capability. The device also has a wide range of features, including low capacitance, small size, low power consumption, high operating voltage, and wide operating temperature range. This device is ideal for application requiring higher performance protection or in situations where traditional PN Junction devices may fail.

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