New Features What’s New in LTspice 26.0.0 Parallel release on MacOS and Windows

• Add support for ARM processors
• Improved convergence
• Add support for loadstate/savestate/convreport defined as part of .tran analysis directive
• When editing a schematic, automatically start wiring if an unconnected pin is left-clicked
• Indicate default series resistance of 1mOhm when editing inductors on a schematic
• • Remove Settings > Hacks > Always default inductors to Rser=0
• • To use default Rser=0 for all inductors, add ".options thev_induc=1" to the circuit
• • Symbols autogenerated from .subckt's only include ModelFile base file name, not full path
• Add schematic menu action Hierarchy > Generate Subckt Netlist
• • Optionally use a symbol of the same name to define the subckt port order
• Add unicode support for file paths in GUI menus/dialogs stored in .ini settings file
• Improve display of recent files in File menu, show full path in status bar when hovered
• Add log warning for extreme value capacitors (>1kF) regarding default parallel resistance
• Change default value for waveform compression to disabled (Settings > Compression) What’s New in LTspice 24.1
• Added a SCOPEDATA choice to the voltage/current source dialog. The file name can now be a string parameter.
• Improved performance and convergence
• Behavioral source expressions using node voltages like "V(node)" can use a string parameter, e.g. "V({param})"
• Relaxed netlist syntax requirements
• Syntax errors inside unused sub-circuit definitions in libraries are silently ignored if they are not instantiated
• MOS Model binning now silently ignored if only one model
• Improved stepped trace behavior in waveform viewer
• Improved Nyquist for Loop waveform representation behavior
• Convergence optimizations
• Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
• Add .option debugtran to add report in log file to help identify convergence challenges
• Enhanced netlist syntax checking
• Changed default integration method to Trapezoidal
• Remember waveform compression settings (under Settings > Compression) between LTspice invocations
• Always accept “3k4” notation as 3.4k (no longer optional)
• Allow device flags to be set to zero for ease of parameterization
• Updated FRA example fra_eg1
• Updated Help documentation
• Bug fixes What’s New in LTspice 24 We recommend that you update components after installing or updating LTspice. In LTspice, choose Tools > Update Components to install the latest LTspice library and models. Faster simulation speed and improved consistency UI Improvements
• Icons and cursors have been updated
• Default background has changed
• Screen-resolution awareness scaling has been fixed
• Default keyboard shortcuts have changed
• Dynamic non-modal cheat sheet available from Help menu
• Classic shortcuts still available via Edit Keyboard Shortcuts > Restore LTspice Classic Values Default trtol (time step control error tolerance) changed to 2 for better performance in most applications Frequency Response Analysis (FRA) enhancements
• New 4-terminal probe
• Enables analysis of uModules with integrated top feedback resistors
• Simplifies analysis of inverting outputs and current feedback
• Analyze any points in the loop
• Plot phase margin (phase + 180) instead of phase
• Smooth stimuli transitions for faster settling / improved accuracy ** Waveform viewer improvements
• Rearrange plot panes via right-click > Move up/down, add above/below
• Add menu items, shortcuts, and buttons to add/clear cursors
• Annotate phase / gain margin via right-click > Notes Annotations
• Annotate steps via right-click > Notes Annotations
• Numerous bug fixes
• Improved marching waveforms, including cursors and dragging traces Dialog improvements
• Better component selection
• Cleaner, more intuitive layout
• New quick links to analog.com product selector, and datasheets
• Bug fixes
• New subckt symbol parameter editor dialog New Configure Analysis toolbar button and shortcut ("a")
• Tabs are populated with all possible simulation commands on the schematic
• Edits to all tabs are mapped to schematic text
• Schematic text is toggled between comment/directive appropriately Shift + Left-Click toggles between comment/directive Component libraries and AppData
• Faster, cleaner component updates
• Libraries are cleaned up or overwritten on updates
• Optional user-defined libraries for additional discrete components
• By default, LTspice looks in Documents\LTspice for user.* (user.dio, mos, res, cap, ind, bead, jft, bjt)
• Directory is configurable in Settings > Search Paths
• Users should not edit ADI-provided files in %localappdata%\LTspice
• LTspice will attempt to dissuade users from saving files here

Optionally share anonymous usage analytics to help us improve LTspice SPICE Log file improved and streamlined

• Report LTspice version, non-default tolerances, etc Usability improvements, such as
• More items on Help menu, including Open Examples
• New toolbar button to tile windows vertically
• Settings dialog remembers last tab
• Command line batch mode (-b) writes to stdout instead of showing GUI Numerous bug fixes

Enhancements 9/8/25 LTspice 24.1.10

• Improved step legend behavior in waveform viewer
• Relaxed requirements for PWL files for independent sources
• Automatically fall back to "PWL SCOPEDATA=..." behavior if the data is nonmonotonic. A warning is put in the log.
• Added optional smoothed half-sine transition for pulse voltage sources 5/26/25 LTspice 24.1.9
• .MEAS results saved into and SQLITE db file
• Improved .savestate/.loadstate behavior when a capacitor value is changed between save/load
• Changed FRA "Help me configure" wizard to always leave simultaneous harmonics blank (Nmax=1) 5/2/25 LTspice 24.1.8
• Unknown .model parameters are now silent warnings again instead of errors
• Attributes in schematic editor are only set to visible if they go from empty to populated (instead of any time they are changed) 4/11/25 LTspice 24.1.7
• Nyquist for Loop representation added 3/29/25 LTspice 24.1.6
• Enhanced table() function to load numbers from external file
• Enhanced .wave directive 3/09/25 LTspice 24.1.5
• Node names can be expressions again, this time officially documented and supported 2/14/25 LTspice 24.1.3
• Re-enabled expanded netlist functionality 2/1/25 LTspice 24.1.2
• Re-enabled caret operator
• Duplicate .model cards are accepted if they are identical
• Duplicate .func, .param, and .subckt are accepted if they come from the same location in the same file 4/16/24 LTspice 24.0.12
• Default location for plot settings changed to schematic directory (instead of raw output directory)
• Bring up Save As dialog when creating an auto-generated symbol from a netlist
• Update FRA examples 3/21/24 LTspice 24.0.10
• Improved font clarity in schematic text editor dialog
• Bring up .step parameter editor when ".step temp ..." directive is right-clicked
• Allowed placing .OP data labels at any time
• Add working directory to top directory pull-down in Place Component dialog 1/15/24 LTspice 24.0.7
• Right-click on symbol brings up attribute editor if model has multiple subckt's, to provide model selector pull-down 1/8/24 LTspice 24.0.5
• Step Legend is now placed in plot rather than a modal window.
• Enabled Text, Move, and Stretch toolbar buttons for the Waveform Viewer.
• Added -version command line option. 12/06/23 LTspice 24.0.3
• Command line batch mode (-b) writes to stdout instead of showing GUI

Fixed Bugs 12/15/25 LTspice 26.0.1

• Bug fixes 12/1/25 LTspice 26.0.0
• Bug fixes 11/11/25 LTspice 24.1.10
• Bug fixes 5/28/25 LTspice 24.1.9
• Bug fixes 5/2/25 LTspice 24.1.8
• Bug fixes 4/11/25 LTspice 24.1.7
• Bug fixes 3/29/25 LTspice 24.1.6
• Bug fixes 3/09/25 LTspice 24.1.5
• Bug fixes 2/20/25 LTspice 24.1.4
• Bug fixes and minor improvements 2/14/25 LTspice 24.1.3
• Bug fixes 2/1/25 LTspice 24.1.2
• Other bugs fixed 1/25/25 LTspice 24.1.1
• Bug fixes 4/16/24 LTspice 24.0.12
• Fix rare waveform viewer crash
• Fix bug in schematic error misinterpreting simulation directives in certain situations 4/5/24 LTspice 24.0.11
• Fixed bug that caused problems with ascii data, plot settings, etc, in regions that use comma as decimal symbol
• Fixed bug that prevented automatic file extension concatenation in Save As function 3/21/24 LTspice 24.0.10
• Fixed -encrypt option in command line 2/2/24 LTspice 24.0.9
• Fixed broken link in the new ADI web page 1/23/24 LTspice 24.0.8
• Fixed a bug that caused noise analysis to get stuck if the schematic contained a syntax error 1/12/24 LTspice 24.0.6
• Fixed bug in pseudo-transient OP with .tran startup
• Renamed Step Legend as Annotate Steps and moved it's menu entry under ->Notes Annotations as well as Plot Settings->Notes Annotations
• Addressed high Ua values on the ISO16750 12V and 24V Load Dump Test A and B pulses 1/8/24 LTspice 24.0.5
• Fixed a bug concerning controlled source with POLY(n) syntax using parameters 12/13/23 LTspice 24.0.4
• Fixed a crash for netlists that contain only single-threaded devices 12/06/23 LTspice 24.0.3
• Minor bugs fixed 11/20/23 LTspice 24.0.2
• Minor bugs fixed 11/02/23 LTspice 24.0.1
• Minor bugs fixed