Reviewed against public product information on 2026-07-29.
Altium scope
full PCB design platform
Tersa scope
focused RF / analog notebook
Simulation
SPICE-oriented workflows
Not claimed
full feature parity
Altium Designer solves a much larger problem
Altium Designer is a professional electronics design platform spanning schematic capture, PCB layout, manufacturing outputs, collaboration, and circuit simulation. Its MixedSim environment supports analog, digital, and mixed-signal simulation with SPICE-family models. Tersa does not attempt to replace that end-to-end PCB system.
Full schematic-to-PCB product development workflow
Mixed-signal circuit simulation inside a larger EDA suite
Libraries, layout, manufacturing, and collaboration depth
Appropriate when the PCB deliverable is part of the same environment
Tersa narrows the job to experiment and tune
Tersa is designed as a lightweight RF and analog workspace where an engineer can open a schematic, configure analysis, inspect plots and markers, view impedance behavior, and tune values without entering a full PCB-authoring environment.
Focused schematic-to-measurement loop
RF S-parameter and Smith chart product direction
Portable tablet and desktop review
Lower conceptual overhead for a targeted experiment
Choose scope before comparing screens
If the job ends in routed boards, fabrication data, managed component libraries, or organization-wide PCB collaboration, Altium is the relevant class of tool. If the immediate job is to explore an RF or analog circuit response and tune values quickly, Tersa is the narrower beta worth testing.
Define whether the deliverable is a plot or a manufactured board
Separate circuit exploration from PCB implementation needs
Verify model and analysis coverage with a real design
Use complementary tools when the workflow naturally has stages
Workflow comparison
Tersa EDA and Altium Designer
Compare the product scope and engineering workflow before moving a real circuit. This table reflects public product information, not claimed feature parity.
Criterion
Tersa EDA
Altium Designer
Product scope
Focused RF and analog simulation notebook
End-to-end professional PCB design platform
Simulation role
Central experiment, measurement, and tuning workflow
MixedSim analysis integrated into schematic and PCB development
PCB implementation
Not positioned as a full PCB layout replacement
Professional layout, manufacturing, libraries, and collaboration
Access model
Browser-oriented beta across screen sizes
Installed professional EDA environment and connected services
Best fit
Focused RF/analog exploration and review
Complete electronics product design and PCB delivery
Primary sources
Verify the details
Technical definitions and competitor statements are grounded in the public documentation below. Product capabilities can change after the review date.
No. Altium Designer is a broad professional PCB platform. Tersa is a focused RF and analog simulation and tuning workspace.
When does Tersa make more sense?
Evaluate Tersa when the task is a portable circuit experiment, RF measurement review, Smith chart inspection, or component tuning loop rather than full PCB implementation.
Can Tersa and Altium be complementary?
Yes. Focused simulation and tuning can happen before or alongside a broader PCB workflow, provided models and design data are transferred and verified appropriately.
