Electronics Engineering Resources, Charts & Tables IP (Ingress Protection) Marking Table Browse IP (Ingress Protection) ratings with complete dust and water protection classifications, IEC 60529 standards, enclosure protection levels, and industrial equipment applications. Open Tool
Analog Electronics & Op-Amp Calculators JFET Buffer Bias Calculator Calculate JFET buffer bias voltage, gate voltage, source voltage, drain current, source resistor, operating point, and impedance for JFET source follower circuit design. Open Tool
Passive Component Calculators (RLC Circuits) Johnson-Nyquist Thermal Noise Calculator (kTB / Vrms & dBm) Calculate Johnson-Nyquist thermal noise voltage (Vrms), noise spectral density (nV/√Hz), and available noise power (dBm) for any resistor. Open Tool
Analog Electronics & Op-Amp Calculators L-Match Impedance Matching Circuit Calculator Calculate L-match impedance matching networks using source impedance, load impedance, inductance, capacitance, quality factor (Q), and operating frequency for RF and analog circuits. Open Tool
Electronic Component Packages & Footprint Guide Leadless IC Package Guide Leadless IC package guide covering QFN, DFN, LCC, LGA package types, thermal performance, PCB assembly, applications, and semiconductor packaging reference. Open Tool
Popular Analog Electronics & Op-Amp Calculators LED Resistor Calculator Calculate the correct LED series resistor value using supply voltage, LED forward voltage, forward current, resistor power rating, and multiple LED configurations for safe LED circuit design. Open Tool
Popular Passive Component Calculators (RLC Circuits) LED Series Current Limiting Resistor Calculator (Single & Array) Calculate required series current-limiting resistor value (Ohms) and minimum power rating (Watts) for single LEDs and series-parallel LED arrays. Open Tool
Passive Component Calculators (RLC Circuits) Linear Regulator Current Limiting Resistor Calculator (LM317 / 7805) Calculate current-limit sense resistor (Rlimit) and power dissipation for linear regulators and LM317 constant current sources. Open Tool
Power Electronics & SMPS Design Calculators LM25085 Switching Regulator Design Calculator (PFET Buck) Calculate external inductor, sense resistor, feedback divider, and timing components for LM25085 hysteretic PFET step-down buck regulators. Open Tool
Popular Digital Electronics & Logic Circuit Calculators Logic Gate Truth Table Generator Generate truth tables for AND, OR, NOT, NAND, NOR, XOR, XNOR, Buffer, and other digital logic gates instantly. Analyze binary inputs, outputs, and logic behavior with this interactive online truth table generator. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Magnetic Pulse Counter Circuit Magnetic pulse counter circuit diagram for counting magnetic sensor pulses using reed switches, Hall-effect sensors, digital counters, and industrial pulse detection applications. Open Tool
Power Electronics & SMPS Design Calculators Magnetron Operating Frequency & Power Calculator (Microwave Tube) Calculate resonant frequency, Hull cut-off voltage, Buneman-Hartree threshold, and output RF power for microwave cavity magnetrons. Open Tool
Passive Component Calculators (RLC Circuits) MCD to Lumens & Lux LED Converter (Beam Angle & Candela) Convert LED luminous intensity from millicandelas (mcd) to total luminous flux (lumens) based on the apex beam viewing angle. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Metal Detector Circuit Metal detector circuit diagram with complete working principle, components, circuit operation, coil design, oscillator, detection methods, and practical electronics applications. Open Tool
Electronic Color Code Calculators & Charts Mica Capacitor Color Code Calculator (MIL-C-5 / EIA-RS-153) Decode 3-dot and 6-dot EIA-RS-153 and MIL-C-5 standard color markings on silver mica capacitors into capacitance, tolerance, DC voltage, and TCR. Open Tool
PCB Design & Trace Calculators (IPC Standards) Microstrip Crosstalk Calculator (3W Rule / Signal Integrity) Estimate near-end and far-end crosstalk coupling between adjacent surface microstrip traces to verify the 3W routing spacing rule. Open Tool
Popular PCB Design & Trace Calculators (IPC Standards) Microstrip Impedance Calculator (IPC-2141A Standard) Calculate characteristic impedance (Z0), effective dielectric constant, and signal propagation delay for surface microstrip traces. Open Tool
PCB Design & Trace Calculators (IPC Standards) Microstrip Inductance Calculator (Self & Loop Inductance) Compute self-inductance and return loop inductance of high-frequency microstrip traces over continuous reference ground planes. Open Tool
PCB Design & Trace Calculators (IPC Standards) Microstrip Maximum Current Calculator (IPC-2152 / IPC-2221) Calculate continuous maximum current capacity and temperature rise for external microstrip PCB copper traces per IPC-2152 standards. Open Tool
RF & Microwave Engineering Calculators Microstrip Patch Antenna Calculator (Rectangular Patch / IEEE) Calculate physical length (L), width (W), and inset feed point for rectangular microstrip patch antennas on dielectric substrates per IEEE standards. Open Tool
PCB Design & Trace Calculators (IPC Standards) Microstrip Trace Width Calculator (50Ω / 75Ω Matching) Determine exact microstrip trace width required to match target characteristic impedance (50Ω, 75Ω) for given PCB stackup parameters. Open Tool
PCB Design & Trace Calculators (IPC Standards) Microstrip Wavelength & Phase Velocity Calculator (IEEE) Compute guided wavelength (λg), phase velocity, and effective dielectric constant for RF microstrip traces at any frequency. Open Tool
RF & Microwave Engineering Calculators Minimum Detectable Signal (MDS) Calculator (IEEE / Radar) Calculate receiver Minimum Detectable Signal (MDS) and thermal noise floor from bandwidth, temperature, and noise figure per IEEE metrics. Open Tool
Development Board Pinouts & GPIO Reference Miscellaneous Board Pinout Reference Find miscellaneous development board pinouts in one place. View GPIO layouts, power pins, communication interfaces, expansion headers, and connector pin configurations for various embedded development boards. Open Tool
Connector Pinouts & Wiring Diagrams Miscellaneous Connector Pinout Reference Find miscellaneous connector pinouts instantly with this free Miscellaneous Connector Pinout Reference. View pin configurations, signal assignments, connector layouts, and wiring references for electronics repair, PCB design, embedded systems, engineering, manufacturing, and education. Open Tool
Analog Electronics & Op-Amp Calculators MSP430 UART Register Calculator Calculate MSP430 UART register values including baud rate, BRW, UCBRFx, UCBRSx, oversampling mode, clock frequency, and UART configuration for TI MSP430 microcontrollers. Open Tool
Electrical & Engineering Calculators MTBF & MTTF Reliability Calculator (MIL-HDBK-217 / Telcordia) Calculate Mean Time Between Failures (MTBF), MTTF, Failure Rate (λ in FITs), and system reliability percentage per MIL-HDBK-217 standards. Open Tool
RF & Microwave Engineering Calculators N-Way Wilkinson Power Divider Calculator (Equal & Unequal Split) Calculate transmission line characteristic impedance and isolation resistor values for N-way equal and unequal Wilkinson power dividers. Open Tool
Development Board Pinouts & GPIO Reference NanoPi Pinout Reference Find NanoPi pinouts instantly with this free NanoPi Pinout Reference. View GPIO layouts, power pins, communication interfaces, expansion headers, and pin configurations for NanoPi single-board computers. Open Tool
Electronics Engineering Resources, Charts & Tables NEMA Connector Chart Browse standard NEMA connector types, plug configurations, receptacle ratings, voltage classes, current ratings, locking connectors, and electrical applications for residential, commercial, and industrial systems. Open Tool