Transient voltage suppression diodes, or TVS for short. When the TVS poles are subjected to reverse transient high-energy impact, it can change the high impedance between the two poles to low impedance at a speed of 10-¹² s, absorb up to thousands of watts of surge power, and make the voltage clamp between the two poles at a predetermined value, effectively protecting the precision components in the electronic circuit from various surge pulses. 

Electronic products need to save power and be efficient, so they need to do low-voltage power supply, such as 3.3V, 2.5V, 1.8V. Especially for battery-powered electronics, low voltage is not enough, low leakage current is also required. 

Leiditech adapts to the market and launches a variety of low-voltage ESD and TVS. Now show TVS: 

This SMAJ3.3LIR, encapsulated SMA, low leakage current 100uA, low voltage 3.3v, power 400W, suitable for high-density assembly, effectively reduce the area of the circuit board.

The advantage of low dropout and low leakage current is that the power supply is ineffective and the conversion efficiency of the power supply is improved.

SMAJ3.3LIR can be widely used in automotive electronics, smart lighting, smart home, mobile phone fast charging, consumer electronics, switching power supply, frequency converter, driver and other circuits.

SMAJ3.3LIR has been widely used in automotive electronics, please contact us if you have the demand!

TVS selection tips                                                 

1. The Vrwm of the TVS shall be more than 10% higher than the maximum DC or continuous operating voltage of the protected circuit, the rated standard voltage of the circuit and the "high-side" tolerance. If the Vrwm selected is too low, the device may enter an avalanche or the normal operation of the circuit may be affected by the reverse leakage current too large. Serial connection divides voltage, parallel connection divides current.

2. The Vc of the TVS should be less than the damage voltage of the protected circuit.

3. The power Ppp of the TVS should be greater than the peak pulse power that may occur in the protected circuit.                                                                                                             

4. The IPP of the TVS should be greater than the circuit transient inrush current.                                                                                 5. For the lightning protection of data interface circuits, it is recommended to use low-capacitance semiconductor ESD.

6. Select the polarity and packaging structure of TVS according to the application. It is more reasonable to use bipolar TVS for AC circuits;Semiconductor ESD arrays are more advantageous for multi-line protection.