All about STDF Files

The STDF file type is primarily associated with STDF Examiner.

STDF	File extension: STDF
	File type:	data file

What is an STDF file?

STDF files mostly belong to STDF Examiner. STDF files are binary files that hold semiconductor test results from automated test equipment (ATE).

Description: They use the Semiconductor Test Data Format to record measurements, error codes, and other test records.

Functionality: The files store detailed information from tests done during semiconductor manufacturing, enabling quick data analysis.

Usage: Companies use specialized software to view these files. Tools like STDF Examiner process and display the data effectively. More details can be found at SmartAST.

Note: These files are not meant to be edited manually and are best viewed with dedicated applications.

How do you open STDF files?

You need a suitable software like STDF Examiner to open an STDF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your STDF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a STDF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online STDF Text Viewer

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Programs that open and convert STDF files:

STDF Examiner
See the previous paragraphs to learn more about the main application. STDF files are often referred to as STDF Examiner data files because this type of file is primarily created or used by this software.
SEDana (Standard Test Data Format) by Salland Engineering
Standard Test Data Format is a typical file format used for storing measurement data generated by Automatic Tester Equipment. The format is developed by Teradyne and is now commonly used as a standard for tester data. Most of the testers from Credence, Agilent, LTX and others can generate this format.

STDF file format:

A file format defines how the data in the file is structured. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our examination of the STDF files comes to the following conclusion:

The file type with the extension 'STDF' is mainly used by one program with a specific format. The two most popular formats are as follows:

85% of all STDF files start with the magic bytes 02 00 00 0A 02 04, which are always the first bytes of this file format. They consist of illegible, cryptic characters. A typical file size is 970 KB. The file type was developed only in the last few years. Several words can almost always be found in the files, e.g. tester. These files are often associated with datalog, wafer, uflex, mflx, naneye, nodata, adin, corr and htol.
15% of all STDF files use the same file format, which can be identified by the letters "00 02 00 0A 01 04" at the beginning. These files contain text and words as well as binary data. The average file size is 4 MB with most files being between 22 KB and 35 MB in size. The files contain the following words: IMAGE V6.3.y2k D8 052200, IMAGE_SETUP_FDLOG, electrogl and galaxy-t. An example of a file name is demofile.stdf or lot2.stdf. Such STDF files store data about rufgb.

Just click the "Choose your .stdf file to analyze" button on this page to find out what your STDF file is.

Technical Data for STDF File Extension

File classification:

Data

Related files:

atdf, rpt, std, std_1, gz, tar, csv, psa, edl, ibs, dsn, art, txt, dat, bin

an stdf data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with STDF files

Associate the STDF file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest STDF file format. Search, therefore, e.g. on the manufacturer website after an available STDF Examiner update.
To make sure that your STDF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .STDF file online - secure, fast, and no downloads needed.