Electronics Engineer Helper
Calculators and references
FreeOffers In-App Purchases
24.02for iPhone, iPad and more
9.5
324 Ratings
Rostyslav Dovhaliuk
Developer
37 MB
Size
Feb 25, 2024
Update Date
Productivity
Category
4+
Age Rating
Age Rating
Electronics Engineer Helper Screenshots
About Electronics Engineer Helper
One of the best apps for anyone interested in electronics. More than 100 thousands users use this app in their work or study. This app has the following calculators and references:
• Datasheet search
• Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code)
• Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards)
• Pinouts Guide (DVI, USB, Display Port, VGA, HDMI, Thunderbolt, Apple, RS-232/422/485, ATX, RCA, MIDI, XLR, Audio Jack, Arduino, Orange Pi, STM32, ESP32, and Raspberry Pi)
• Ohm's law calculator
• AWG converter (wire diameter, cross-section area, resistance and maximum current)
• Resistor for LED
• Voltage divider
• Capacitor code
• Capacitor markings
• Capacitor ESR tables
• Frequency response curve calculation of passive filters (RC, RL, RLC, LC)
• Inductor color code
• Linear current regulator
• SMD packages list
• Reactance
• PCB trace resistance
Additionally, by purchasing the PRO version of the app, you will get access to additional tools:
• SMD components marking codes
• Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards)
• Linear voltage regulator
• Resistor value to color marking converter
• Voltage rectifier
• Series or parallel electrical components' connection calculator
• Diode voltage drop
• Minimum PCB trace width
• Analog to digital conversion
Privacy Policy: https://rengate.github.io/EE-Helper-ToU-and-PP/PP.html
Terms of Use: https://rengate.github.io/EE-Helper-ToU-and-PP/ToU.html
• Datasheet search
• Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code)
• Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards)
• Pinouts Guide (DVI, USB, Display Port, VGA, HDMI, Thunderbolt, Apple, RS-232/422/485, ATX, RCA, MIDI, XLR, Audio Jack, Arduino, Orange Pi, STM32, ESP32, and Raspberry Pi)
• Ohm's law calculator
• AWG converter (wire diameter, cross-section area, resistance and maximum current)
• Resistor for LED
• Voltage divider
• Capacitor code
• Capacitor markings
• Capacitor ESR tables
• Frequency response curve calculation of passive filters (RC, RL, RLC, LC)
• Inductor color code
• Linear current regulator
• SMD packages list
• Reactance
• PCB trace resistance
Additionally, by purchasing the PRO version of the app, you will get access to additional tools:
• SMD components marking codes
• Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards)
• Linear voltage regulator
• Resistor value to color marking converter
• Voltage rectifier
• Series or parallel electrical components' connection calculator
• Diode voltage drop
• Minimum PCB trace width
• Analog to digital conversion
Privacy Policy: https://rengate.github.io/EE-Helper-ToU-and-PP/PP.html
Terms of Use: https://rengate.github.io/EE-Helper-ToU-and-PP/ToU.html
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What's New in the Latest Version 24.02
Last updated on Feb 25, 2024
Old Versions
In this update:
• [PRO] Series and parallel combinations. Calculation of values of two resistors connected in series or in parallel with total resistance closely matching the desired value.
• Added infrared diodes to Resistor for LED calculator.
• Added pinout of Raspberry Pi 5.
• Added conversion of entered number to ASCII and Unicode text character in Numbers Converter.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• [PRO] Series and parallel combinations. Calculation of values of two resistors connected in series or in parallel with total resistance closely matching the desired value.
• Added infrared diodes to Resistor for LED calculator.
• Added pinout of Raspberry Pi 5.
• Added conversion of entered number to ASCII and Unicode text character in Numbers Converter.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
Show More
Version History
24.02
Feb 25, 2024
In this update:
• [PRO] Series and parallel combinations. Calculation of values of two resistors connected in series or in parallel with total resistance closely matching the desired value.
• Added infrared diodes to Resistor for LED calculator.
• Added pinout of Raspberry Pi 5.
• Added conversion of entered number to ASCII and Unicode text character in Numbers Converter.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• [PRO] Series and parallel combinations. Calculation of values of two resistors connected in series or in parallel with total resistance closely matching the desired value.
• Added infrared diodes to Resistor for LED calculator.
• Added pinout of Raspberry Pi 5.
• Added conversion of entered number to ASCII and Unicode text character in Numbers Converter.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.12
Dec 27, 2023
In this update:
• [PRO] Selection of SMD resistor marking for given resistance value.
• Pinouts of LPT (Parallel Port) and Game Port interfaces.
• Summing operational amplifier calculator.
May all your wishes come true in 2024.
Happy New Year!
Rostyslav
• [PRO] Selection of SMD resistor marking for given resistance value.
• Pinouts of LPT (Parallel Port) and Game Port interfaces.
• Summing operational amplifier calculator.
May all your wishes come true in 2024.
Happy New Year!
Rostyslav
23.11
Nov 13, 2023
In this update:
• [PRO] 4-20 mA Signal Converter.
• Transistor Circuits of Logic Gates.
• Small optimizations in Datasheet Search engine.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• [PRO] 4-20 mA Signal Converter.
• Transistor Circuits of Logic Gates.
• Small optimizations in Datasheet Search engine.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.10
Oct 7, 2023
In this update several user requests were implemented:
• Added search for text in datasheet preview screen (available on iOS 16 and newer).
• Added megapascal (MPa) unit in unit converter.
• Added description of diode cases/packages in SMD packages chart.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Added search for text in datasheet preview screen (available on iOS 16 and newer).
• Added megapascal (MPa) unit in unit converter.
• Added description of diode cases/packages in SMD packages chart.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.09
Sep 13, 2023
In this update:
• Pinouts of SD and microSD memory cards.
• RC Circuit calculator.
• iOS 17 optimizations.
• Minor user interface improvements of several calculators.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Pinouts of SD and microSD memory cards.
• RC Circuit calculator.
• iOS 17 optimizations.
• Minor user interface improvements of several calculators.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.07
Jul 14, 2023
In this update:
• [PRO] Attenuators calculator.
• Ability to rearrange tools at main application screen.
• Minor user interface improvements at several tools.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• [PRO] Attenuators calculator.
• Ability to rearrange tools at main application screen.
• Minor user interface improvements at several tools.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.04
Apr 6, 2023
In this update:
• Logic Gates truth table calculation tool.
• Minor user interface improvements in Pinouts Browser.
• Pinouts of Teensy 4.1 and 4.0.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Logic Gates truth table calculation tool.
• Minor user interface improvements in Pinouts Browser.
• Pinouts of Teensy 4.1 and 4.0.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
23.03
Mar 11, 2023
In this update:
• NTC thermistor resistance. Calculation of thermistor resistance at specified temperature range.
• [PRO] NTC and Voltage Divider. Calculation of output voltage at specified temperature range of voltage divider that uses a thermistor.
• [PRO] NTC and ADC. Calculation of output data from Analog to Digital Converter connected to a voltage divider that uses a thermistor.
• PS/2 mouse and keyboard connector pinout.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• NTC thermistor resistance. Calculation of thermistor resistance at specified temperature range.
• [PRO] NTC and Voltage Divider. Calculation of output voltage at specified temperature range of voltage divider that uses a thermistor.
• [PRO] NTC and ADC. Calculation of output data from Analog to Digital Converter connected to a voltage divider that uses a thermistor.
• PS/2 mouse and keyboard connector pinout.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
22.12
Dec 2, 2022
In this update:
• Three-band resistor marking.
• Arduino Due and Leonardo pinouts.
• Radxa Pi E and Pi S pinouts.
• CPU and GPU fans pinouts.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Three-band resistor marking.
• Arduino Due and Leonardo pinouts.
• Radxa Pi E and Pi S pinouts.
• CPU and GPU fans pinouts.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
22.09
Sep 17, 2022
In this update:
• Added new tool. Cable voltage drop calculator.
• Optimizations for iOS 16.
• New improved appearance of dropdown lists.
• Small optimizations in Datasheet Search engine.
• Added About the app section.
• Fixed wrong title of kilowatt-hour unit in Unit Converter.
• Added tooltip at Operational Amplifier Calculator.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Added new tool. Cable voltage drop calculator.
• Optimizations for iOS 16.
• New improved appearance of dropdown lists.
• Small optimizations in Datasheet Search engine.
• Added About the app section.
• Fixed wrong title of kilowatt-hour unit in Unit Converter.
• Added tooltip at Operational Amplifier Calculator.
Big thank you to everybody who subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
22.05
May 17, 2022
In this small update:
• Added PCI Express x1, x4, x8 and x16 pinouts.
• Extended the list of datasheets sources.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Added PCI Express x1, x4, x8 and x16 pinouts.
• Extended the list of datasheets sources.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
22.04
Apr 13, 2022
• New Unit Converter tool.
• Updated Voltage Divider tool. Now you can also calculate resistors values and input voltage.
• New pinouts: Raspberry Pi Zero W and Zero 2 W, Arduino Pro Micro.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Updated Voltage Divider tool. Now you can also calculate resistors values and input voltage.
• New pinouts: Raspberry Pi Zero W and Zero 2 W, Arduino Pro Micro.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
22.02
Feb 25, 2022
• [PRO] Added 100 thousands new SMD component markings.
• [PRO] Added footprint images for majority of SMD component markings.
• New Number Conversion tool.
Due to the launch of a full-scale military invasion against Ukraine, I cannot predict when the next app update will be released. Thank you very much to all users who have been using the app through all these years.
Regards,
Rostyslav
• [PRO] Added footprint images for majority of SMD component markings.
• New Number Conversion tool.
Due to the launch of a full-scale military invasion against Ukraine, I cannot predict when the next app update will be released. Thank you very much to all users who have been using the app through all these years.
Regards,
Rostyslav
21.12.1
Dec 30, 2021
• New RLC Circuit calculator.
• [PRO] Significantly reduced the size of SMD components marking codes database (from 200 megabytes to 50).
• The app is now available in Italian. Thanks to carlogulino1998 and andreabilancione for contribution.
This was a tough year for all of us. I genuinely wish each and every one of you a better 2022.
Stay healthy and may all your dreams come true.
Merry Christmas and a Happy New Year!
Regards,
Rostyslav
• [PRO] Significantly reduced the size of SMD components marking codes database (from 200 megabytes to 50).
• The app is now available in Italian. Thanks to carlogulino1998 and andreabilancione for contribution.
This was a tough year for all of us. I genuinely wish each and every one of you a better 2022.
Stay healthy and may all your dreams come true.
Merry Christmas and a Happy New Year!
Regards,
Rostyslav
21.12
Dec 5, 2021
• Description of TDK/Epcos capacitor markings.
• Brand new Operational Amplifiers calculator.
• Updated French localization. Thanks to TomCarbon for contribution.
• Bug fixes.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Brand new Operational Amplifiers calculator.
• Updated French localization. Thanks to TomCarbon for contribution.
• Bug fixes.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
21.09
Sep 23, 2021
• Optimizations for iOS 15.
• 555 Astable Generator (50% Duty Cycle).
• [PRO] 555 Astable Generator (Variable Duty Cycle).
• The app is now also available on macOS 11 Big Sur. Download now at Mac App Store.
• Updated datasheet search engine.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• 555 Astable Generator (50% Duty Cycle).
• [PRO] 555 Astable Generator (Variable Duty Cycle).
• The app is now also available on macOS 11 Big Sur. Download now at Mac App Store.
• Updated datasheet search engine.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
21.04
Apr 30, 2021
• Updated pinouts for STM32 Nucleo-32 boards.
• Added pinout for Raspberry Pi Pico.
• Small bug fixes.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Added pinout for Raspberry Pi Pico.
• Small bug fixes.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
21.03
Mar 18, 2021
• Updated Resistor for LED tool. The tool now also displays resistor's color code besides its value.
• Multiple windows support for iPads.
• Updated AWG Converter tool to support custom stranded cables.
• Updated pinouts for Arduino boards. Added information about pin functions of Arduino Uno, Micro and Mega2560 boards.
• Added pinouts for Microchip/Atmel SAM G53 microcontroller.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Multiple windows support for iPads.
• Updated AWG Converter tool to support custom stranded cables.
• Updated pinouts for Arduino boards. Added information about pin functions of Arduino Uno, Micro and Mega2560 boards.
• Added pinouts for Microchip/Atmel SAM G53 microcontroller.
Big thank you to everybody who either subscribed or purchased the app's PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
20.12.1
Dec 29, 2020
• This update features only minor optimizations and fixes of rare fatal errors.
This was a tough year for all of us. I genuinely wish each and every one of you a better 2021.
Stay healthy and may all your dreams come true.
Merry Christmas and a Happy New Year!
Regards,
Rostyslav
This was a tough year for all of us. I genuinely wish each and every one of you a better 2021.
Stay healthy and may all your dreams come true.
Merry Christmas and a Happy New Year!
Regards,
Rostyslav
20.12
Dec 6, 2020
• New alternating current calculator. Calculate active, apparent, and reactive power;
• Updated datasheet search tool. A big thank you to all who tested the beta version;
• New equivalent components search tool. Search for equivalent component for given part number;
• Optimizations for iPhone 12 mini;
• The app is now also available in Norwegian.
Big thank you to all 322 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Updated datasheet search tool. A big thank you to all who tested the beta version;
• New equivalent components search tool. Search for equivalent component for given part number;
• Optimizations for iPhone 12 mini;
• The app is now also available in Norwegian.
Big thank you to all 322 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
20.10
Oct 2, 2020
• Fixed issue with in-app purchases that happened for some customers;
• Updated Portuguese localization (thanks to Tiago Fernandes for contribution).
• Updated Portuguese localization (thanks to Tiago Fernandes for contribution).
20.09
Sep 17, 2020
• Optimizations for iOS 14;
• Arduino Pro and Pro Mini pinouts;
• Better trackpad and mouse support when running the app on an iPad (iOS 13.4 and newer);
• Added ability to rotate a datasheet preview (only in new version of datasheet search);
• Minor fixes in datasheet search engine;
• Updated Spanish localization (thanks to Juan Jose Aguirre Villanueva for contribution).
Big thank you to all 346 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Arduino Pro and Pro Mini pinouts;
• Better trackpad and mouse support when running the app on an iPad (iOS 13.4 and newer);
• Added ability to rotate a datasheet preview (only in new version of datasheet search);
• Minor fixes in datasheet search engine;
• Updated Spanish localization (thanks to Juan Jose Aguirre Villanueva for contribution).
Big thank you to all 346 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
1.15
Jul 23, 2020
This small update brings new tool and localization improvements:
• Beta version of new Datasheet Search;
• Updated localization;
Big thank you to all 130 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Beta version of new Datasheet Search;
• Updated localization;
Big thank you to all 130 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
1.14.1
Jun 28, 2020
This update brings new tools and improvements:
• Length converter (in PCB tools);
• ESP32 pinouts: Espressif ESP32-DevKitC, AI-Thinker ESP32-CAM, AI-Thinker NodeMCU-32S, Sparkfun ESP32 Thing;
• STM32 Nucleo-32 pinouts;
• Updated localization;
• Bug fixes.
This is the last version that will work on iOS 11. To get future updates, please update your device to iOS 12.
Big thank you to all 380 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• Length converter (in PCB tools);
• ESP32 pinouts: Espressif ESP32-DevKitC, AI-Thinker ESP32-CAM, AI-Thinker NodeMCU-32S, Sparkfun ESP32 Thing;
• STM32 Nucleo-32 pinouts;
• Updated localization;
• Bug fixes.
This is the last version that will work on iOS 11. To get future updates, please update your device to iOS 12.
Big thank you to all 380 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
1.14
May 10, 2020
This update brings new tools and improvements:
• [PRO] Analog to digital conversion calculator;
• New Arduino pinouts: Nano 33 BLE Sense, Nano 33 BLE, and Nano Every;
• Selected pin is now highlighted in more noticeable way.
• The app is now also available in French (big thanks to Théo Naudi for translation).
Big thank you to all 490 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
• [PRO] Analog to digital conversion calculator;
• New Arduino pinouts: Nano 33 BLE Sense, Nano 33 BLE, and Nano Every;
• Selected pin is now highlighted in more noticeable way.
• The app is now also available in French (big thanks to Théo Naudi for translation).
Big thank you to all 490 users who either subscribed or purchased the app's PRO version since the last update. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
Electronics Engineer Helper FAQ
Click here to learn how to download Electronics Engineer Helper in restricted country or region.
Check the following list to see the minimum requirements of Electronics Engineer Helper.
iPhone
Requires iOS 15.0 or later.
iPad
Requires iPadOS 15.0 or later.
Mac
Requires macOS 12.0 or later.
iPod touch
Requires iOS 15.0 or later.
Electronics Engineer Helper supports English, French, German, Italian, Norwegian Bokmål, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian
Electronics Engineer Helper contains in-app purchases. Please check the pricing plan as below:
Lifetime PRO Version
$7.99
1 Year Subscription
$1.99
