PCB Design & Trace Calculators (IPC Standards) Slotline Impedance & Guided Wavelength Calculator (IEEE / RF) Calculate characteristic impedance (Z0) and guided wavelength (λg) for planar microwave slotline transmission lines on dielectric substrates. Open Tool
Electronic Color Code Calculators & Charts SMD Capacitor Code Calculator (EIA-198 Marking System) Decode 2-character and 3-digit EIA-198 SMD ceramic chip capacitor markings into picofarads (pF), nanofarads (nF), and microfarads (µF). Open Tool
Electronic Color Code Calculators & Charts SMD Inductor Code Calculator (EIA Standard Codes) Decode 3-digit and alphanumeric SMD chip inductor markings into nanohenries (nH) and microhenries (µH) per EIA standard marking codes. Open Tool
Popular Electronic Color Code Calculators & Charts SMD Resistor Code Calculator (EIA-96 & Standard Codes) Decode 3-digit, 4-digit, and 1% precision EIA-96 SMD resistor markings into exact Ohms, kilo-Ohms, and mega-Ohms with tolerance ratings. Open Tool
Electrical & Engineering Calculators SNR to ADC Resolution & Dynamic Range Converter (N Bits) Convert theoretical Signal-to-Noise Ratio (SNR in dB) to equivalent ADC resolution in bits (N) using the classical 6.02N + 1.76 dB formula. Open Tool
Passive Component Calculators (RLC Circuits) Solenoid Electromagnet Force Calculator (Holding & Pull Force) Calculate magnetic pulling force (Newtons / lbs), flux density (Tesla), and required ampere-turns for electromagnetic solenoids and actuators. Open Tool
Development Board Pinouts & GPIO Reference SparkFun Board Pinout Reference Explore SparkFun development board pinouts with this free SparkFun Board Pinout Reference. Identify GPIO layouts, power pins, UART, SPI, I2C, PWM, ADC pins, and connector configurations. Open Tool
RF & Microwave Engineering Calculators Specific Absorption Rate (SAR) Calculator (IEEE 1528 / FCC) Calculate electromagnetic Specific Absorption Rate (SAR in W/kg) in biological human tissue per IEEE 1528 and FCC/ICNIRP safety guidelines. Open Tool
RF & Microwave Engineering Calculators Spurious-Free Dynamic Range (SFDR) Calculator (IEEE Std 1241) Calculate Spurious-Free Dynamic Range (SFDR in dBc and dBFS) for RF receivers, ADCs, and DACs based on noise floor and harmonic spur levels. Open Tool
Electronics Engineering Resources, Charts & Tables Standard Capacitor Values Chart Browse standard capacitor values from E3, E6, E12, E24, E48, E96, and E192 series with capacitance ranges, tolerance classes, and preferred IEC standard values for electronic circuit design. Open Tool
Engineering Utility Tools & Converters Standard Resistor Ratio Calculator (E12, E24, E96 & E192 Series) Find the closest matching standard EIA resistor pairs (E12, E24, E96, E192) to achieve any exact target ratio or fractional voltage division. Open Tool
Popular Electronics Engineering Resources, Charts & Tables Standard Resistor Value Calculator Find the nearest standard resistor value from E-series resistor tables including E3, E6, E12, E24, E48, E96, and E192. Perfect for resistor selection, circuit design, PCB development, and electronic engineering applications. Open Tool
Popular Cable, Wire Gauge & Voltage Drop Calculators Standard Wire Gauge (SWG) Resistance Calculator (Copper & Alloys) Calculate electrical DC resistance per meter, foot, and kilometer for standard wire gauge (SWG) conductors at any operating temperature. Open Tool
Engineering Utility Tools & Converters Star-Delta (Wye-Delta / Y-Δ) Transformation Calculator Convert balanced and unbalanced three-phase resistor and impedance networks between Star (Wye / Y) and Delta (Δ) configurations instantly. Open Tool
Passive Component Calculators (RLC Circuits) Steinhart-Hart Thermistor Calculator (NTC Beta & Coefficients) Calculate precise temperature (°C/°F/K) from NTC thermistor resistance using the Steinhart-Hart equation and Beta (β) parameter model. Open Tool
PCB Design & Trace Calculators (IPC Standards) Stripline Crosstalk Calculator (NEXT & FEXT / IPC-2141) Evaluate near-end (NEXT) and far-end (FEXT) crosstalk coupling between parallel embedded stripline traces in multilayer PCBs. Open Tool
PCB Design & Trace Calculators (IPC Standards) Stripline Maximum Current Calculator (IPC-2152 Internal) Calculate maximum continuous current capacity and thermal rise for internal stripline traces buried in multilayer PCBs per IPC-2152. Open Tool
PCB Design & Trace Calculators (IPC Standards) Stripline Trace Width Calculator (IPC-2141A Standard) Synthesize exact stripline trace width required to match target characteristic impedance (50Ω / 75Ω) per IPC-2141A equations. Open Tool
Popular Cable, Wire Gauge & Voltage Drop Calculators SWG to MM & Inches Wire Gauge Converter (BS 3737 Standard) Convert Standard Wire Gauge (SWG) sizes to exact diameter in millimeters (mm), inches, and cross-sectional area (mm²) per BS 3737. Open Tool
PCB Design & Trace Calculators (IPC Standards) Symmetric Stripline Impedance Calculator (IPC-2141A) Compute characteristic impedance (Z0) and propagation delay for centered symmetric stripline conductors between ground planes. Open Tool
Analog Electronics & Op-Amp Calculators T-Match Impedance Matching Circuits Calculator Calculate T-match impedance matching network components including inductance, capacitance, quality factor (Q), source impedance, load impedance, and operating frequency. Open Tool
RF & Microwave Engineering Calculators T-Pad Attenuator Calculator (50Ω & 75Ω RF Impedance) Calculate series and shunt resistor values for symmetrical T-pad RF attenuators for 50Ω, 75Ω, or custom system characteristic impedance. Open Tool
Analog Electronics & Op-Amp Calculators Tank Circuit Resonance Calculator Calculate LC tank circuit resonance frequency, inductance, capacitance, quality factor (Q), impedance, bandwidth, and resonant characteristics for RF and analog circuits. Open Tool
Electronic Color Code Calculators & Charts Tantalum Capacitor Color Code Calculator (EIA-RS-198 / MIL-STD) Decode color bands and dots on dipped solid tantalum bead capacitors to identify capacitance (µF), voltage rating, and polarity per EIA-RS-198. Open Tool
RF & Microwave Engineering Calculators TDR Cable Fault Distance & Length Calculator (IPC-TM-650) Calculate transmission line length and distance to cable faults from reflection time delay and velocity of propagation per IPC-TM-650 standards. Open Tool
RF & Microwave Engineering Calculators TEM Wavelength & Frequency Calculator (Dielectric Media) Calculate free-space and dielectric TEM wave propagation wavelength (λ), phase velocity, and period for any RF and microwave frequency. Open Tool
Popular Electrical & Engineering Calculators Temperature Unit Converter (Celsius, Fahrenheit, Kelvin, Rankine) Convert temperatures seamlessly between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) per international temperature scale standards. Open Tool
Development Board Pinouts & GPIO Reference Texas Instruments (TI) Pinout Reference Explore Texas Instruments (TI) development board pinouts with this free TI Pinout Reference. View GPIO layouts, power pins, UART, SPI, I2C, PWM, ADC, DAC, and connector configurations. Open Tool
Electronics Engineering Resources, Charts & Tables Thermocouple Color Code Chart Reference international thermocouple color codes, wire identification, temperature ranges, conductor materials, ANSI, IEC, BS, DIN, and JIS standards for accurate thermocouple selection, installation, calibration, and maintenance. Open Tool
Electronic Component Packages & Footprint Guide Through-Hole Component Guide Through-hole component guide covering THT components, leaded packages, PCB mounting, soldering techniques, applications, and electronic assembly reference. Open Tool