3KP45CA-B

Transient Voltage Suppressors (TVS) diodes are a commonly used form of voltage protection. The 3KP45CA-B is a type of TVS diode that provides excellent transient suppression for a wide range of applications from consumer electronics to automotive parts.

The 3KP45CA-B’s axial-leaded diode package makes it easy to install and its low surge current allows for high-temperature operation with added reliability. The diode is capable of clamping transients up to 43V with a 5A peak pulse current and a clamping voltage holding up to 30V. It also has a low on-state voltage of around 3V, making it suitable for applications that require low static losses.

The 3KP45CA-B is designed to protect TV sets, computers, notebooks, peripherals, copiers, fax machines, and other consumer electronic equipment, as well as automotive parts such as alternators and regulators. It is also widely used in telecom and medical equipment. It is suitable for applications subject to inductive ringing, including ASIC and FPGA interfaces.

The 3KP45CA-B’s working principle is based on the deployment of a Zener diode in reverse polarisation. When the voltage on the diode reaches its clamping voltage, the diode begins to conduct current, thus limiting the voltage on the protected circuit. The transient voltage produced is then directed to the diode and its corresponding grounding source, thus preventing the circuit from exceeding its maximum allowable voltage.

The 3KP45CA-B has a low junction capacitance of 0.9pF at 7V, which ensures that the diode can quickly respond to fast transients and handle higher frequency signals without sacrificing performance. The device also features a high temperature rating of 175°C, making it suitable for use in high-temperature environments.

The 3KP45CA-B is an effective voltage protection method for consumer electronics, medical equipment, and automotive applications. Its axial-leaded design makes it easy to install and its fast-responding Zener diode allows it to effectively suppress transient voltage up to 43V with a 5A peak pulse current. The diode also has a low on-state voltage of around 3V, making it suitable for low static loss applications, and its high temperature rating ensures reliable operation in high-temperature environments.