Resistors

Resistor Power Dissipation Calculator – Power Rating & Derating Check Home›Electronics Calculators›Resistors›Resistor Power Dissipation Calculator This calculator requires JavaScript. Key formulas:P = V²/R  |  P = I²R  |  P =… read more

SMD Resistor Code Calculator – Decode 3-Digit, 4-Digit & EIA-96 Markings Home›Electronics Calculators›Resistors›SMD Resistor Code Calculator This calculator requires JavaScript. Example: SMD code 472 = 4700Ω = 4.7kΩ Decode or… read more

Pull-Down Resistor Calculator – Sizing, Logic Levels & Standard Values Home›Electronics Calculators›Resistors›Pull-Down Resistor Calculator This calculator requires JavaScript. Key formula:Rpd = VIL × Rdrv / (Vcc − VIL) Hold a… read more

Resistor Noise Calculator Home›Electronics Calculators›Resistors›Resistor Noise Calculator This calculator requires JavaScript. Key formula:V_n = √(4kTRΔf) Enter Resistance, Temperature, and Bandwidth Audio (10kΩ / 20kHz) RF (50Ω / 1MHz) Sensor (1MΩ… read more

Resistor Attenuator Calculator Home›Electronics Calculators›Resistors›Resistor Attenuator Calculator This calculator requires JavaScript. Supports T-pad, Pi-pad, and L-pad topologies. Enter Attenuation, Impedances, and Topology 50Ω / 6 dB T-pad 75Ω / 10… read more

RS485 Termination Resistor Calculator Home›Electronics Calculators›Resistors›RS485 Termination Resistor Calculator This calculator requires JavaScript. Key rule:R_term = Z_0 (cable impedance) | V_diff must exceed 200 mV Enter Cable and Bias Network… read more

Braking Resistor Calculator Home›Electronics Calculators›Resistors›Braking Resistor Calculator This calculator requires JavaScript. Key formula:R_min = V_DC² / P_brake | P_cont = P_brake × Duty% Enter Drive and Motor Parameters 230V /… read more

Bleeder Resistor Calculator Home›Electronics Calculators›Resistors›Bleeder Resistor Calculator This calculator requires JavaScript. Key formula:T = -RC × ln(V_safe / V_0) | R = -T / (C × ln(V_safe / V_0)) Enter… read more

Current Sense Resistor Calculator Home›Electronics Calculators›Resistors›Current Sense Resistor Calculator This calculator requires JavaScript. Key formulas:V_sense = I x R | P = I² x R | R = V /… read more

Pull-Up Resistor Calculator Home›Electronics Calculators›Resistors›Pull-Up Resistor Calculator This calculator requires JavaScript. Key formulas:R_min = (Vcc – V_OL) / I_OL | R_max = (Vcc – V_OH) / (N x I_leak) Enter… read more

Shunt Resistor Calculator Home›Electronics Calculators›Resistors›Shunt Resistor Calculator This calculator requires JavaScript. Key formulas:R = V / I | P = I x R | V = I x R V… read more