For the 4148 general-purpose switch diode, there are various packages available on the market. Special attention should be paid to the models from the LIZ brand, among which the CD4148WSP (in 0805 package) is a commonly seen one.
The Lizhi CD4148WP is a high-speed switching diode packaged in 1206, featuring a reverse withstand voltage of 75V, an average rectified current of 150mA, and a reverse recovery time of only 4ns.
CD4148WSP is a high-speed switching diode widely used in electronic circuits. It adopts surface mount technology and has become one of the indispensable components in many circuit designs due to its fast switching speed and stable performance. If you are looking for a reliable surface mount switch diode, understanding the detailed characteristics of CD4148WSP will be helpful.
The reason why switch diode 1N4148 (often abbreviated as 4148) has become the most widely used switch diode in electronic circuits is not accidental, but because it perfectly balances performance, cost, versatility, and supply chain maturity, almost becoming an "industry standard". The following are the main reasons why it is widely used:
Switching diodes, as key components for high-speed switching, pulse processing, and signal shaping in electronic devices, play an important role in various circuit designs. Based on the mainstream brands and technological characteristics in the existing market, they can be divided into the following three categories:
There are various packaging forms for switch diodes, mainly serving different application scenarios (such as power, frequency, space limitations, heat dissipation requirements, cost) and manufacturing processes (such as through-hole insertion, surface mount). The following are some common and important types of switch diode packaging, classified by main categories:
Okay, as a special diode designed specifically for fast switching applications, switch diodes have significant characteristics that distinguish them from ordinary rectifier diodes. The core design goal is to achieve high-speed, efficient, and reliable transition between the "on" (conducting) and "off" (cutoff) states.
Full analysis of switch diode models: classification, characteristics, and application scenarios As a core component in electronic circuits, switch diodes are widely used in signal switching, rectification, protection and other scenarios. There are numerous models with significant performance differences, and the selection needs to be based on specific requirements. The following is a systematic review from four dimensions: technical classification, typical models, key parameters, and application scenarios.
The following are common switch diode models and their characteristics. Except for 1N4148, other models cover different application scenarios such as high frequency, high voltage, and miniaturization:
As a high-frequency small signal device, the 4148 switch diode has various packaging forms, mainly divided into two categories: through hole and SMD, as follows:
