Electronics Formulas
438 formulas across 32 categories. Click any formula to use the interactive calculator.
Thermal
11- Junction Temperature
- Full Thermal Chain
- Required Heatsink
- Maximum Power (Junction to Case)
- Thermal Time Constant
- MOSFET Conduction Loss
- MOSFET Switching Loss
- BJT Total Dissipation
- Diode Power Loss
- Zener Regulation Resistor
PCB & Traces
24- Trace Current Capacity (IPC-2221)
- Trace Resistance
- Trace Voltage Drop
- Via Current Capacity (IPC-2221)
- Microstrip Impedance
- 555 Timer Astable
- 555 Timer Monostable
- Crystal Load Capacitance
- RC Oscillator Frequency
- Crystal Frequency Stability
- ADC Resolution (LSB)
- ADC Theoretical SNR
- Steinhart-Hart Temperature
- Wheatstone Bridge
- Linear Sensor Transfer Function
Wire & Cable
11- Wire Resistance
- AWG to Cross-Section Area
- Cable Voltage Drop
- Maximum Cable Length
- Skin Effect AC Resistance
Op-Amps
15- Non-Inverting Amplifier
- Inverting Amplifier
- Summing Amplifier
- Difference Amplifier
- Gain-Bandwidth Product
- CMOS Dynamic Power
- Rise Time to Bandwidth
- Setup Time Margin
- Static Power Dissipation
- Clock Skew Timing Margin
- Decoupling Capacitor Impedance
- Capacitor Ripple Current (Buck)
- Bulk Capacitor Hold-Up Energy
- Buck Input Capacitor RMS Ripple
- Boost Output Capacitor RMS Ripple
- FFT Bin Resolution
- Averaging SNR Improvement
- Decimation ENOB Gain
- FFT Frequency Bin
- Decimation Resolution Gain
- UART Baud Rate Error
- RS-485 Termination Resistor
- RS-485 Bias Resistor
- Shannon Channel Capacity
- Bit Error Rate (BPSK)
- Harmonic Frequency
- Differential Mode Filter Inductance
- Common Mode Choke Impedance
- Shielding Effectiveness
- Aperture Leakage Cutoff
- Audio Crossover Frequency
- SPL from Power & Sensitivity
- Audio Cable High-Frequency Rolloff
- SPL from Pressure
- Crest Factor
- Solar Panel Power Output
- Solar Array Sizing
- Battery Bank Sizing
- MPPT Buck Converter Duty Cycle
- Wind Turbine Power
- 4–20 mA Loop Scaling
- 4–20 mA Burden Voltage
- Thermocouple Cold Junction Compensation
- Control Valve Flow (Cv)
- PLC Scan Time
- Quarter-Wave Antenna Length
- Half-Wave Dipole Length
- Coaxial Stub Length (λ/4)
- Effective Isotropic Radiated Power
- SWR Reflected Power
- Transformer EMF Equation
- Transformer VA Rating
- Transformer Voltage Regulation
- Transformer Current Ratio
- Transformer Copper Loss
- Coulomb’s Law
- Electric Field of a Point Charge
- Electric Potential of a Point Charge
- Gauss’s Law (Electric Flux)
- Lorentz Magnetic Force