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SPEF file extension

The table below provides useful information about the .spef file extension. It answers questions such as:

  • What is the .spef file?
  • What program do I need to open a .spef file?
  • How can the .spef file be opened, edited or printed?
  • How can I convert .spef files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Standard Parasitic Exchange Format

Standard Parasitic Exchange Format .spef file icon
The SPEF file is a Standard Parasitic Exchange Format. Standard Parasitic Exchange Format (SPEF) is an IEEE standard for representing parasitic data of wires in a chip in ASCII format.
SPEF format description not yet available
Category: Data files
Application: Cadence Quantus
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SPEF aliases:
SPEF related links:
SPEF related extensions:

Other types of files may also use the .spef file extension.

🚫 The .spef file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

pef, sef, slef, spdf, spe, spec, spf, sprf

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

SPSS Extension
Pentax Electronic Format
StruCAD 3D Model
WinSpec CCD Capture Data
Preferred Executable Format
Site Publisher Profile
RPM Package Specification
Encryptafile Signature
SnapGene Project
SQR Portable Format

🔴 Can't open a .spef file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .spef file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .spef file extension, write to us!

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