This app is a powerful collection of electronics tools. It is suitable for hobbyist, electronic engineers or professionals

The FREE version may contain ads. You can also buy the PRO version to support the developer, unlock more features and get rid of the ads.

Component value function is a tool for find combination of components to making desired corner frequency, equivalent resistance, equivalent capacitance, equivalent inductance, etc. It is useful for designers have different choices of limited components

• Calculators : Component value range, SMD resistor code, Resistor in series and parallel, Capacitor in series and parallel, Inductor in series and parallel, Impedance calculator, Ratio calculator, Voltage divider, Ohm's law, RC charging / discharging, LED resistor calculator, RC, RL, LC filter, Wheatstone bridge, Operational amplifier, Adjustable voltage regulator, 555 timer calculator, Power dissipation calculator, Coil inductance, Battery life calculator, Trace width calculator, Frequency converter, RMS converter, Decibel converter, Range converter, Temperature calculator

● Pinout : audio DIN , DVI, Ethernet, Firewire, Game port, HDMI , Lightning port, Mini-Display port, PS/2 connector, Parallel port, Phone jack connector, RCA connector, Registered jack, S-video, SDCard , Serial port, SIM card, USB, VGA , XLR connector

● Resource : Circuit symbol, SMD resistor package, SMD capacitor package, TTL 7400 series, CMOS 4000 series, SMD marking, ASCII table, logic gate , Resistivity table, Batteries, Ampacity, AWG wire, SWG wire, World plug

● Share CSV via AirDrop

● Share CSV to iCloud Drive

What’s New

Version 1.0.8

Fix miscellaneous bug

Ratings and Reviews

4.5 out of 5
20 Ratings

20 Ratings

operator25 ,

EE Buddy

Great App Almost like a refresher course. A fantastic reference.


DaleEldemire ,

Great app

Great for anybody in the electronics field and also the hobbyist⚡️⚡️⚡️⚡️⚡️

Mynor,W ,

Very helpful

Love it guys thanks for this app


Siu Yuen Ho
24.8 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Portuguese, Simplified Chinese, Spanish, Traditional Chinese

Age Rating
Rated 4+
© Peter Ho


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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