Flux is a PCB design software that works like an AI hardware engineer: handling complex tasks, learning your standards, explaining its decisions, and collaborating with you at every step.
Describe
Tell Flux what you're building. AI maps out your schematic and BOM for your PCB design.
Design
Refine your layout with AI-assisted routing and real-time collaboration.
Manufacture
Export Gerbers, BOM, and pick-and-place files, then order from any manufacturer.
More than traditional PCB design tools. A cloud-native, AI-powered PCB design software platform.
Flux AI takes on part research, component placement, route optimization, and design rule checks so you spend less time on repetitive PCB design tasks and more time on the decisions that matter.
"From hours to minutes on routing iterations"
Multiple engineers on the same board, at the same time. Comment, review, and iterate on your PCB design without emailing files back and forth. Version history built in.
PCB design teams ship 40% faster with real-time review.
Open a tab and start your PCB design. Flux runs entirely in your browser with no downloads, no license management, no OS compatibility headaches. Works on Mac, Windows, Linux, Chromebook.
Schematic capture, PCB layout, simulation, BOM generation, and Gerber export all in one PCB design software. No more switching between tools, no file format juggling.
Flux has plans for individual builders and growing teams. See current pricing.
Flux supports circuit (SPICE) simulation, signal integrity, power integrity, full-wave electromagnetic simulation, high-speed routing, rigid-flex, and manufacturing verification. Ask Flux for the engineering result you need. It combines these capabilities with mechanical design, firmware, and wire harnesses to build the complete device.
Flux simulates routed signals and differential pairs. Analyze S-parameters, impedance, insertion loss, crosstalk, TDR, and eye diagrams. Ask Flux to review the results and fix the design.
Signal integrity simulation and review →Analyze PDN impedance, decoupling, load-step droop, IR drop, and plane resonance. Flux uses vendor capacitor models to select decoupling capacitors and reviews rail current and temperature.
Power integrity simulation and review →Run full-wave EM analysis on routed copper. Inspect electric and magnetic field maps, coupling, and frequency response. Ask Flux to review reference-plane gaps and return paths for EMC.
EMC design review →Set impedance, clearance, layer, and via rules. Flux calculates propagation delay from the stackup, converts timing budgets to route-length targets, and tunes trace length and skew.
Length and skew tuning →Plan DDR topology and timing budgets. Route fly-by or T-branch address and command nets, match data lanes to strobes, and review termination, skew, and signal integrity.
DDR and PCIe PCB design →Fan out dense BGAs with blind vias, buried vias, and microvias. Define via spans in the stackup and use neckdowns to route fine-pitch pads.
HDI and BGA PCB design →Define rigid and flex area stackups, coverlay, and stiffeners. Fold and twist the board in 3D, check fit in the assembly, and export the folded board as STEP.
Flex and rigid-flex boards →Design the board and mechanical assembly together. Flux updates connector openings, mounting supports, and the board outline when either side changes. Check interference, clearances, and tolerance stack-ups.
ECAD–MCAD co-design →Connect boards, motors, sensors, and batteries. Flux defines pin-to-pin wiring, finds mating housings, and selects wire gauges and lengths. Get a harness quote and a checkout link to order.
Design wire harnesses →Use organization-owned part libraries and team standards. Review manufacturer part numbers, lifecycle, stock, lead time, and cost. Find in-stock replacements and second sources for production.
Part sourcing and supply chain →Ask Flux to check fabrication and assembly requirements before you order. Review exported Gerber copper gaps, silkscreen, and board outlines. Cross-check the BOM and pick-and-place files.
Design for manufacturing and assembly →Work together in the browser with project permissions, comments, and version history. Ask Flux to run design verification and prepare the manufacturing files and project documentation for review.
Design verification →For example, ask: “Review this DDR4 board. Check topology and timing budgets, tune lane-to-strobe skew, run SI and PDN simulations, and fix the issues before preparing the manufacturing files.”
Or ask: “Design the mechanical assembly around this rigid-flex board. Update the mounting supports and connector openings, check folded-board clearances, and design the harness to the motor and sensors.”
Work with Flux.ai like an AI hardware engineer: handling complex tasks, learning your standards, explaining its decisions, and collaborating with you at every step.
Desktop install required
100% Browser-based
Design alone, email files
Real-time multiplayer
No AI assistance
AI help built-in
$10K+/seat licenses
Free to start
Loved by engineers pushing hardware design forward.
PCB design software creates schematics, places components, routes boards, and exports manufacturing files. Flux is an AI hardware engineer with these tools built in. It also designs mechanical parts, writes firmware, designs wire harnesses, and runs circuit (SPICE), electromagnetic, and thermal simulations in the same project.
Yes. Flux supports signal integrity analysis with S-parameters, TDR, eye diagrams, impedance, and crosstalk. It supports power integrity analysis with PDN impedance, decoupling, rail droop, and IR drop. Full-wave electromagnetic simulation provides electric and magnetic field maps. Ask Flux to run the simulations, review the results, and fix the design.
Yes. Flux plans DDR topology and timing budgets, routes fly-by or T-branch nets, and matches byte lanes to their strobes. It uses stackup propagation delay to convert timing budgets to trace-length targets, then tunes length and skew. Flux also routes impedance-controlled PCIe, USB, HDMI, and Ethernet pairs.
Yes. Flux supports rigid and flex area stackups, folded 3D visualization, bend and clearance checks, and folded STEP export. Flux designs mechanical parts and assemblies around the board. Ask it to update the board, connector openings, or mounting supports when the design changes.
Yes. Ask Flux to design the wiring between boards, motors, sensors, and batteries. It uses connector pinouts and shared nets to define pin-to-pin connections, find mating housings, and select wire gauges and lengths. Flux can prepare a wiring table, harness drawing, and bill of materials. Ask for a harness quote and a checkout link to order.
Yes. Ask Flux to check DFM and DFA requirements against your manufacturing profile, including clearances, drills, vias, component spacing, and solder-mask rules. Flux can check exported Gerbers, board outlines, silkscreen, BOM, and pick-and-place files before you order.
Flux is AI-first. Tell it the engineering result you need, and it combines design, simulation, sourcing, and manufacturing work in one project. Your team directs and edits the work in the browser. Compare the workflows in Flux vs. Altium, Flux vs. Cadence, and Flux vs. KiCad.
Yes. Flux imports complete projects from Altium, Cadence OrCAD and Allegro, KiCad, Siemens PADS and Xpedition, Zuken CADSTAR, Eagle, Fusion Electronics, EasyEDA, DipTrace (XML export), and SOLIDWORKS PCB. Schematics, parts, connections, board outlines, and placement come across. Flux imports Labcenter Proteus SDF netlists with Specctra board exports. IPC-2581 revision B and C files become board projects with reusable footprint parts. IDF 2.0 and 3.0 board files become board projects with the outline, cutouts, drilled and mounting holes, part placements, and 3D part heights. Altium, OrCAD, PADS, KiCad, Eagle, Fusion Electronics, EasyEDA, and DipTrace part libraries, Allegro footprints, and JEP30 part models become Flux parts. Ask Flux to continue the imported design with mechanical parts, firmware, and manufacturing files.
Yes. Multiple engineers can edit the same schematic and layout in real time. Changes sync in the browser. Project permissions, comments, visual comparisons, and version history keep the review context with the design.
Eligible individual plans include a free trial. Teams subscriptions start paid. See current plans and pricing.
