Engineering Downloads
Free electronics engineering resources — PCB libraries, design templates, reference PDFs, and interactive tools.
Schematic Title Blocks
Professional schematic border templates with title block, revision table, and company logo area.
Download ZIPKiCad Standard Library
Curated KiCad symbol and footprint library for common components — resistors, capacitors, connectors, ICs.
Download ZIPEagle to KiCad Migration Kit
Scripts and guide for migrating Autodesk Eagle projects to KiCad with layer mapping reference.
Download ZIPAltium Integrated Library
Altium Designer IntLib with schematic symbols and PCB footprints matched to manufacturer specs.
Download ZIPEasyEDA LCSC Library
Quick-access component library for EasyEDA with LCSC part numbers and verified footprints.
Download ZIPSTEP 3D Models Pack
Common component STEP models for 3D PCB visualization — headers, connectors, switches, modules.
Download ZIPBOM Template (Excel)
Standardized bill of materials spreadsheet with manufacturer, MPN, quantity, and cost columns.
Download XLSXTest Plan Template
Markdown test plan template with sections for functional, electrical, environmental, and EMC testing.
Download MDPCB Design Checklist (PDF)
Pre-manufacturing review checklist. DRC rules, DFM checks, silkscreen, drill files, and Gerber verification.
Download PDFGerber Job Templates
Pre-configured Gerber job files for JLCPCB, PCBWay, and OSH Park with correct layer mapping.
Download ZIPElectronics Formulas Cheat Sheet
One-page printable reference: Ohm's law, power, RC, RL, RLC, op-amp, and filter formulas.
Download PDFWire Gauge Chart
AWG to mm/mm² conversion, resistance per km, and ampacity for chassis and power transmission wiring.
Download PDFSMD Codebook
Comprehensive SMD marking code lookup for transistors, diodes, voltage regulators, and ICs.
Download PDFIPC-7351 Reference
Land pattern standard for surface mount design. Package dimensions and recommended pad geometries.
Download PDFPCB Trace Width Calculator
Interactive HTML tool. Input current and temperature rise to get required trace width per IPC-2221.
Open ToolResistor Color Code Calculator
Interactive HTML tool. Select band colors to decode 4/5/6-band resistor values instantly.
Open Tool