Reducing the risk of automatically searching for analogs to the MOSFET

Today we will tell you how to reduce the time spent searching for similar electrical parts and reduce the number of errors in manual analysis. For example, if you need to find a replacement for a transistor, you will have to check many factors. Plus, if there is a new model on the market and you don’t know its name, you might miss this opportunity. Identical transistors from ON Semiconductor are called IPAK, and Vishay’s appear in catalogs as TO-251AA.

Specifications for similar MOSFET models

At the first stage of selecting a similar spare part, it is necessary to find all existing substitutes. Further, you can immediately exclude those manufacturers that you do not like or set an inappropriate price. The next step will be a complete comparison of technical specifications. This part of the work is the most difficult and time consuming.

When we talk about MOSFETs, we must compare the mechanical and electrical parameters of the parts. If you find at least minimal differences, then you should additionally check these characteristics with the requirements for your project. Usually, when choosing a substitute for a MOSFET transistor, the following indicators are analyzed:

  • Maximum drain-source voltage (Vds);
  • Resistance to drain-source;
  • Rated power;
  • Rated current;
  • Maximum gate-source voltage (Vgs);
  • Channel type;
  • The values ​​of the various parasitic capacitances present.

Sometimes it happens that two parts with completely identical characteristics in real use work differently. If your project has very strict requirements, then you also need to find and compare laboratory information from each manufacturer.

SourcingBot helps speed up the selection of MOSFET substitutes

The SourcingBot service allows you to fully automate the complex selection process. All parts data from different manufacturers are already loaded into the system. A special algorithm analyzes the data, even if models of different brands are named differently. You get the results already ranked by their degree of similarity to the original. In front of each detail, you will see how many percent it matches the original. The user only needs to enter in the search field the name of the part that needs to be replaced.

An additional tool located at will help you get the entire database of modern electronic parts that exist on the market. On request, you can also see the laboratory test results for any part. This will help you decide if you find two or three identical parts. There is always a winner in laboratory tests.

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