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Introduction to IEEE802.3 Frame Structure

No matter which method is used to achieve network port communication, it cannot be separated from relevant standard protocols. However, the Ethernet involved in our company’s ONU product series mainly follows the IEEE 802.3 standard. Below is a brief introduction to the IEEE 802.3 frame str... Read More

Application characteristics of TVS transient voltage suppression diode principle TVS transistor

TVS – Short for Transient Voltage Suppressor Diode. TV is a voltage limiting overvoltage protection device in the form of a diode. When the two poles of TVS are subjected to reverse transient high-energy shocks, it can convert the high impedance between the two poles into low impedance at a... Read More

Important parameters for TVS selection

As a protective device, TVS tubes can effectively prevent electrostatic breakdown and protect circuits. When selecting TVS tubes, attention must be paid to their relevant parameters, otherwise unexpected problems may occur. VRWM, VBR, Vc, Ipp, Cd are important parameters for ESD/TVS device select... Read More

Application of MOS transistor

How to determine the three poles first? The identification of the three pins on the MOS transistor symbol should focus on key points: G-pole, needless to say, is relatively easy to recognize. The S-pole, whether it is a P-channel or an N-channel, intersects two lines. D-pole: Whether it is P-chan... Read More

Introduction to Important Parameters of BOSA – Through Hole Size (2)

The through-hole itself has parasitic capacitance to the ground. If the diameter of the isolation hole on the floor layer of the through-hole is known to be D2, the diameter of the through-hole pad is D1, the thickness of the PCB board is T, and the dielectric constant of the board substrate is ε... Read More

Introduction to Important Parameters of BOSA – Through Hole Size (1)

Composition of BOSA: The light emitting part is called TOSA; The light receiving part is called ROSA; When two come together, they are called BOSA. Electric to Optical TOSA: LD (Laser Diode) semiconductor laser, used to convert electrical signals into optical signals for use in optical emission t... Read More