SMLJ45CA-QH

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TVS (Transient Voltage Suppressor) diodes provide protection against Transient Overvoltage or ESD (Electrostatic Discharge) such as that experienced during equipment insertion or contact with ESD-susceptible surfaces. The SMLJ45CA-QH is a low-capacitance TVS Diode designed specifically for ESD protection. This device is rated for operation from -65°C to +175°C and is an ideal protection solution for the I/O levels of a variety of digital and logical systems.

The SMLJ45CA-QH (commonly found in five-lead surface-mounted packages) has a broad application field and is widely used in portable electronic devices, computers and communication systems. It is especially suited for handhelds and small surface-mount applications where size is critical. It is also an excellent choice for automotive, industrial, and medical equipment that require reliable added ESD protection.

The TVS diode SMLJ45CA-QH is designed to protect sensitive electronic components from transient overvoltages. Its low capacitance allows for a very fast clamping response time, which is essential for protecting ultra-low voltage, high-speed interfaces. The device is designed to withstand multiple ESD strikes at the maximum rated voltage and the peak impulse current is designed to be above 15A. Additionally, the SMLJ45CA-QH has an ultra-small package size and provides reliable and effective protection at very low cost.

The working principle of the SMLJ45CA-QH is similar to that of the traditional zener diode, but with unique features. It is composed of a silicon junction connected between two metal layers of opposite polarity, forming a TVS junction. This junction acts as a clamp. When an external voltage exceeding the breakdown voltage is applied, electrons are injected in the junction from one side, while the holes drain away from the other side. The SMLJ45CA-QH also features a reverse-biased diode for transient protection, as well as a rail guard for parasitic ESD protection. The low capacitance of this device helps to ensure that it responds very quickly to high-energy pulses.

In addition to its wide application field, the SMLJ45CA-QH offers many advantages over other types of ESD protection devices. Its small package size makes it ideal for use in space-constrained applications, while its fast clamping response ensures that sensitive components are protected from transient voltage spikes. It also features a rail guard for ESD protection, and its low capacitance makes it suitable for high-speed digital systems. The SMLJ45CA-QH is an ideal solution for any application requiring effective and reliable transient voltage protection.

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