PCB Design & Trace Calculators (IPC Standards) Embedded Microstrip Impedance Calculator (IPC-2141A) Calculate characteristic impedance (Z0) and effective permittivity of microstrip traces buried beneath a dielectric coating or solder mask. Open Tool
Popular Electrical & Engineering Calculators Engineering Unit Conversion Calculator (SI & Imperial Units / NIST) Convert engineering units across length, area, volume, mass, energy, power, pressure, force, and velocity per NIST and ISO/IEC 80000 standards. Open Tool
Popular Active Component & Semiconductor Calculators FET Buffer Amplifier Calculator (Common Drain Source Follower) Calculate voltage gain (Av), input/output impedance (Zin, Zout), and bias operating point for JFET and MOSFET common-drain source follower buffers. Open Tool
Electronic Color Code Calculators & Charts Film Capacitor Code Calculator (IEC 60062 / IEC 60384) Decode alphanumeric markings on polyester (MKT), polypropylene (MKP), and metalized film capacitors into capacitance, tolerance, and voltage. Open Tool
Development Board Pinouts & GPIO Reference Fishino Pinout Reference Find Fishino board pinouts instantly with this free Fishino Pinout Reference. View GPIO layouts, power pins, communication interfaces, onboard peripherals, and pin configurations for Fishino development boards. Open Tool
Electronic Component Packages & Footprint Guide Flat Pack Daisy Chain Guide Flat Pack Daisy Chain guide covering package interconnection, PCB routing techniques, signal integrity, package layouts, manufacturing considerations, and electronic packaging reference. Open Tool
Electronic Component Packages & Footprint Guide Flip Chip IC Package Guide Flip Chip IC package guide covering package structure, bump technology, thermal performance, advantages, PCB assembly, applications, and semiconductor packaging reference. Open Tool
Power Electronics & SMPS Design Calculators Flyback Switch Mode Regulator Design Calculator (Continuous/DCM) Calculate duty cycle, peak switch voltage, transformer turns ratio, and output filter capacitance for DCM and CCM flyback regulators. Open Tool
Power Electronics & SMPS Design Calculators Flyback Transformer SMPS Design Calculator (Isolated Power) Calculate primary inductance (Lp), turns ratio (Np/Ns), peak primary current, and core gap for isolated discontinuous/continuous flyback SMPS. Open Tool
Power Electronics & SMPS Design Calculators Form Factor & Crest Factor Calculator (AC Waveforms / IEEE) Calculate Form Factor (RMS/Average) and Crest Factor (Peak/RMS) for sinusoidal, square, triangle, and modified AC power waveforms. Open Tool
Popular RF & Microwave Engineering Calculators Free Space Path Loss (FSPL) Calculator (ITU-R P.525) Calculate signal attenuation (FSPL in dB) over wireless transmission distance and frequency per standard ITU-R P.525 propagation models. Open Tool
RF & Microwave Engineering Calculators Friis Transmission Equation Calculator (Received RF Power) Calculate received RF power (Pr in dBm) in ideal line-of-sight wireless communication links using the fundamental Friis transmission equation. Open Tool
Electronics Engineering Resources, Charts & Tables Fuse Application Categories Guide Learn standard fuse application categories, utilization classes, protection characteristics, breaking capacities, and common industrial applications for electrical, electronic, and power distribution systems. Open Tool
Electronic Component Packages & Footprint Guide Grid Array Package Guide Grid Array package guide covering BGA, LGA, PGA package types, pin layouts, thermal performance, mounting methods, applications, and semiconductor packaging reference. Open Tool
Popular Electrical & Engineering Calculators Heat Sink Thermal Resistance Calculator (Theta Junction-to-Ambient) Calculate required heat sink thermal resistance (θsa in °C/W), junction temperature (Tj), and power dissipation for semiconductors. Open Tool
Electronic Component Packages & Footprint Guide IC Chip Package Guide IC chip package guide covering through-hole and surface-mount package types, dimensions, pin layouts, thermal characteristics, package identification, and PCB design reference. Open Tool
Electronic Color Code Calculators & Charts IC Color Code & Pin 1 Identification Chart (JEDEC / MIL-STD) Reference guide for color dots, pin 1 orientation notches, and military specification markings on integrated circuit packages per JEDEC and MIL-STD. Open Tool
Electronic Component Packages & Footprint Guide IC Package Types Guide IC package types guide covering DIP, SOIC, SOP, QFP, QFN, BGA, PGA, LGA, CSP, package dimensions, applications, and semiconductor package reference. Open Tool
Popular Electronics Engineering Resources, Charts & Tables IC Pinouts Database Browse a comprehensive IC Pinouts Database with pin diagrams, package information, pin functions, power pins, input/output descriptions, and datasheet references for analog, digital, power, logic, interface, and microcontroller ICs. Open Tool
Electronics Engineering Resources, Charts & Tables IEC Connector Chart Browse IEC connector types, power connector standards, pin configurations, voltage ratings, current ratings, and connector applications for electrical equipment, computers, industrial systems, and power distribution. Open Tool
Passive Component Calculators (RLC Circuits) Inductive Reactance & Admittance Calculator (XL & BL / IEEE) Calculate inductive reactance (XL), susceptance/admittance (BL), and total AC impedance from inductance and operating frequency. Open Tool
Power Electronics & SMPS Design Calculators Inductor Current & Maximum Power Calculator (Energy & Saturation) Calculate peak inductor current, magnetic energy storage (Joules), and continuous power rating before core magnetic saturation. Open Tool
Passive Component Calculators (RLC Circuits) Inductor Current & Maximum Power Calculator (Energy & Saturation) Calculate peak inductor current, maximum magnetic energy storage (Joules), and continuous power rating before core saturation occurs. Open Tool
Engineering Utility Tools & Converters Inductor Design Tool (Toroid & Core Turns / AL Value) Calculate required wire turns (N), wire gauge, and flux density for toroidal and bobbin magnetic core inductors using manufacturer AL values. Open Tool
Passive Component Calculators (RLC Circuits) Inductor Stored Energy Calculator (Joules & Magnetic Energy) Calculate total magnetic energy stored in an inductor (Joules / Watt-seconds) based on inductance (Henry) and instantaneous DC current. Open Tool
Power Electronics & SMPS Design Calculators Inrush Current Limiting Load Switch Calculator (MOSFET Slew Rate) Calculate soft-start gate capacitance (Css), MOSFET slew rate (dV/dt), and peak inrush charging current for capacitive power rails. Open Tool
Development Board Pinouts & GPIO Reference Intel Processor Pinout Reference Find Intel processor pinouts instantly with this free Intel Processor Pinout Reference. View CPU socket pin layouts, power pins, signal pins, memory interfaces, and processor package pin configurations for Intel processors. Open Tool
Passive Component Calculators (RLC Circuits) Interdigital Capacitor Calculator (Planar Microwave IDC / IEEE) Calculate capacitance, finger gap coupling, and quality factor (Q) for planar interdigital capacitors (IDC) on dielectric substrates. Open Tool
Popular Electronics Engineering Resources, Charts & Tables International Plug and Ampacity Guide Find international electrical plug types, socket standards, voltage, frequency, current ratings, and wire ampacity information for countries worldwide. A complete reference for travel, electrical installations, equipment compatibility, and engineering applications. Open Tool
Popular Analog Electronics & Op-Amp Calculators Inverting Op-Amp Resistor Calculator Calculate inverting op-amp resistor values, voltage gain, input resistor, feedback resistor, input impedance, output voltage, and amplifier parameters for analog circuit design. Open Tool