Electronics Reference

Key information in your hand

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Your shareware reference for all things electronic: resistors, capacitors, transistors, ICs, and microcontrollers. You can even identify components with your camera. Electronics Component Reference is a beautifully crafted reference app for anyone who works with electronic components - from hobbyists building their first circuit to engineers at the bench. WHAT'S INSIDE • Resistors - Interactive color band calculator with common values and a visual guide to reading 4, 5, and 6-band resistors. • Capacitors - Decode ceramic capacitor markings, explore types, and look up values instantly. • Semiconductors - Reference cards for popular transistors and diodes, with a guide to PN junctions, BJTs, MOSFETs, and more. • Integrated Circuits - Browse a library of common ICs and the complete 74-series logic family, with pinouts and a family comparison guide (HC, LS, AC, LVC). • Microcontrollers - Specs and details for popular chips across ARM, AVR, and Xtensa architectures. • Boards - Pinout diagrams and GPIO references for Raspberry Pi 5 & 4, Pico, Arduino Uno & Nano, and ESP32. • Identify - Point your camera at a component and use OCR to identify ICs, capacitors, and microcontrollers from their markings. • Learn - Interactive common circuits, so you can always have the correct component values. Information on chip families, capacitor types and more., No ads, no account required, no internet needed.

Ratings & Reviews

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• IC search now recognizes real markings such as  74HC00 ,  SN74LS04 ,  MC74HC00 , and package suffixes. • Identification results now open the relevant IC, MCU, logic, or capacitor reference. • OCR now respects image orientation and displays recognition failures instead of silently reporting no text. • Detected capacitor values show equivalent pF, nF, µF, and common markings. • Capacitor destinations avoid showing a misleading empty table when the conversion itself is the answer. • The home animation becomes static for Reduce Motion and while the app is inactive.

Version 1.2

The developer, John Kennedy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Provider
    • John Kennedy
    Size
    • 19.6 MB
    Category
    • Reference
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    • iPad
      Requires iPadOS 18.6 or later.
    • Mac
      Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.6 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 John Kennedy
  • Privacy Policy

    • More by John Kennedy

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