CG0603MLC-12E Circuit Protection

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TVS - Varistors, MOVs are designed to protect sensitive electronic components within a system from voltage transients generated either from external sources such as lightning or internal sources such as load switching. Therefore, it is important to choose the right transient voltage suppressor (TVS) device to provide proper protection. The CG0603MLC-12E is a chip transient voltage suppressor devicethat combines both metal oxide varistor (MOV) and PTC for surge protection.

The CG0603MLC- 12E chip is designed to protect up to two lines against both overvoltage and overcurrent. It provides twelve volts of breakdown voltage and 0.1 Ohms of low parasitic resistance. The device can handle up to 8 amperes of peak current. The peak power capability is rated up to 48 watts. This device can be used in a wide variety of applications including consumer electronics, telecom equipment, automotive, and industrial control systems.

The CG0603MLC-12E working principle is based on the principle of an MOV. The MOV is an nonlinear, bidirectional, electrical semiconductor device made of MnO2 that acts as a voltage-dependent resistor. When the voltage applied across the MOV exceeds its rated voltage, it begins to conduct electricity, reducing the voltage applied across the MOV and diverting the current away from the protected component, thereby providing protection. MOVs are widely used as surge protectors in many consumer electronic products. However, they become thermally damaged over time due to their nonlinear volt-ampere characteristics. It is therefore important to pair the MOV with another protection device such as a PTC.

The CG0603MLC-12E also contains a PTC device. A PTC is an electrical device that serves as a current limiter by providing resistance to proteced components in case of an overcurrent situation. It does not provide overvoltage protection like an MOV but instead limits the current in order to protect the device from over-current damage. When the current becomes excessive, the PTC begins to increase its resistance, thereby providing a current limit.

The combination of an MOV and PTC makes the CG0603MLC-12E a cost-effective solution for surge protection applications. The integrated device has the advantage of providing both overcurrent and overvoltage protection. The device has low thermal resistance and is housed in a small package, making it suitable for applications with limited space. It is also rated for operation in temperatures as low as -55°C.

The CG0603MLC-12E is ideal for use in applications where surge protection is needed but limited space, budget, and temperature range are constraints. Its combination of an MOV and PTC make it a cost-effective solution for surge protection in a wide variety of applications.

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