DO-218AB Packaging Z5W27V Series TVS Domestic Replacement

1. Applications such as Z5W27V

These materials are mainly used for overvoltage protection in electronic systems and belong to the TVS product series of car regulations.

For example:

1) Automotive electronic systems

2) Commercial Electronic Systems

3) Industrial Electronic Systems

4) Used for communication, controllers, measuring instruments, etc

2. Why apply Z5W27V, etc

1) The excellent clamping voltage characteristics protect the electronic system from any type of surge, such as Load dump LOAD DUMP.

2) High surge power that can withstand the ability to absorb load dumping surges.

3) Can absorb steep surges.

3. Which ones, such as Z5W27V, are out of production

A website found that Z4W27V/Z5W27V, Z5W27VC, Z5W37V,/Z6W27V/Z8W27V, and Z8W37V have been discontinued.

4. Shanghai Leiditech SM5S/SM8S can replace the Z5W27V series products

The Shanghai Leiditech DO-218AB series SM5S/SM8S is mainly used to protect electronic equipment from damage caused by high or low voltage.

SM5S/SM8S TVS is widely used for overvoltage protection and electrostatic discharge protection in circuits. Its main functions are as follows:

1) Overvoltage protection: When there is a sudden change or high voltage in the circuit, TVS can quickly respond and guide excess energy to the ground to protect subsequent electronic components from damage caused by high voltage. This helps to prevent damage to components such as circuit boards and IC chips.

2) Electrostatic discharge protection: When human static electricity or other external static power sources come into contact with electronic devices, it may cause an increase in transient voltage, thereby causing damage to the equipment. TVS can provide a low resistance path to quickly guide electrostatic energy to the ground, protecting equipment from damage caused by electrostatic discharge.

Overall, the SM5S/SM8S series TVS protects electronic equipment from overvoltage and electrostatic discharge, ensuring the normal operation and reliability of the equipment.

Therefore, Shanghai Leiditech SM5S/SM8S series can be used to replace several discontinued components such as Z5W27V.

In the above table, the same sample color indicates a comparison between KEC and Shanghai Leiditech of the same model

It can be seen that the corresponding models with the same Pppm in the same color have higher current, lower Vc, and higher power for Shanghai Leiditech.

For example:

SM5S24A replaces Z4W27V, the Ipp of Leiditech is 93A, Z5W27V is 50A, the Vc of S5S24A is 38.9V, and Z5W27V is 40V,

SM5S24A replaces Z5W27V, the Ipp of Leiditech is 93A, Z5W27V is 70A, the Vc of S5S24A is 38.9V, and Z5W27V is 40V,

SM5S33A replaces Z5W37V, the Ipp of Leiditech is 68A, Z5W27V is 62A, and the Vc of S5S33A is 53.3V,

SM5S24A replaces Z6W27V, the Ipp of Leiditech is 93A, Z5W27V is 90A, the Vc of S5S24A is 38.9V, and Z6W27V is 40V,

SM8S24A replaces Z8W27V, the Ipp of Leiditech is 170A, Z8W27V is 120A, the Vc of SM8S24AA is 38.9V, and Z8W27V is 40V,

SM8S33A replaces Z8W27V, the Ipp of Leiditech is 124A, Z5W27V is 100A, the Vc of SM8S33A is 53.3V, and Z8W27V is 50V,

In addition, referring to the current, Shanghai Leiditech seems to be able to replace high power with labeled low power. For example, why can SM5S24A replace Z6W27V, where Z6W27V is 4600W and SM5S24A is 3600W.

In fact, the measured power data of the Shanghai Leiditech SM5S series are much higher than those indicated in the specifications.

The measured data is 7180W, so it can be replaced with confidence.

Shanghai Leiditech SM8S measured data:

4. Shanghai Leiditech DO-218AB packaging can be made into the following models: