Engineering Downloads

Free electronics engineering resources — PCB libraries, design templates, reference PDFs, and interactive tools.

ZIP

Schematic Title Blocks

Professional schematic border templates with title block, revision table, and company logo area.

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ZIP

KiCad Standard Library

Curated KiCad symbol and footprint library for common components — resistors, capacitors, connectors, ICs.

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ZIP

Eagle to KiCad Migration Kit

Scripts and guide for migrating Autodesk Eagle projects to KiCad with layer mapping reference.

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ZIP

Altium Integrated Library

Altium Designer IntLib with schematic symbols and PCB footprints matched to manufacturer specs.

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ZIP

EasyEDA LCSC Library

Quick-access component library for EasyEDA with LCSC part numbers and verified footprints.

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ZIP

STEP 3D Models Pack

Common component STEP models for 3D PCB visualization — headers, connectors, switches, modules.

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XLSX

BOM Template (Excel)

Standardized bill of materials spreadsheet with manufacturer, MPN, quantity, and cost columns.

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MD

Test Plan Template

Markdown test plan template with sections for functional, electrical, environmental, and EMC testing.

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PDF

PCB Design Checklist (PDF)

Pre-manufacturing review checklist. DRC rules, DFM checks, silkscreen, drill files, and Gerber verification.

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ZIP

Gerber Job Templates

Pre-configured Gerber job files for JLCPCB, PCBWay, and OSH Park with correct layer mapping.

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PDF

Electronics Formulas Cheat Sheet

One-page printable reference: Ohm's law, power, RC, RL, RLC, op-amp, and filter formulas.

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PDF

Wire Gauge Chart

AWG to mm/mm² conversion, resistance per km, and ampacity for chassis and power transmission wiring.

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PDF

SMD Codebook

Comprehensive SMD marking code lookup for transistors, diodes, voltage regulators, and ICs.

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PDF

IPC-7351 Reference

Land pattern standard for surface mount design. Package dimensions and recommended pad geometries.

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HTML

PCB Trace Width Calculator

Interactive HTML tool. Input current and temperature rise to get required trace width per IPC-2221.

Open Tool
HTML

Resistor Color Code Calculator

Interactive HTML tool. Select band colors to decode 4/5/6-band resistor values instantly.

Open Tool