ThermalAvailable
Thermal Resistance & Temperature Rise Calculator
Calculate steady-state temperature rise, equivalent thermal resistance, final temperature, thermal-limit power, allowable Rθ, and thermal margin.
Calculator category
Thermal Calculators
Calculate thermal resistance, junction temperature, heat dissipation, heat sink requirements, and electronic cooling parameters.
Available Calculators
12
Engineering Applications
4
Calculators
Each listed tool links to a working calculator with engineering inputs, formulas, examples, notes, and related resources.
ThermalAvailable
Heat Sink Thermal Resistance Calculator
Calculate required heatsink RθSA, junction temperature, sink temperature, thermal path drops, suitability margin, and maximum steady-state thermal power.
ThermalAvailable
Thermal Resistance Network Calculator
Calculate equivalent thermal resistance, series temperature drops, parallel heat-flow distribution, and simple series-parallel thermal networks.
ThermalAvailable
Thermal Derating Calculator
Calculate allowable rating, remaining rating, derating slope, zero-rating endpoint, maximum operating temperature, and applied-load margin from datasheet thermal derating data.
ThermalAvailable
NTC Thermistor Calculator
Calculate NTC thermistor resistance, temperature, Beta value, Steinhart-Hart conversion, and first-order self-heating estimates.
ThermalAvailable
RTD PT100 / PT1000 Calculator
Calculate PT100 and PT1000 RTD resistance, temperature, sensitivity, and measurement-current self-heating using IEC 60751 Callendar-Van Dusen equations.
ThermalAvailable
Thermal Interface Material Calculator
Calculate TIM bulk thermal resistance, temperature drop, heat transfer, required conductivity, bond-line thickness, contact area, and TIM comparison results.
ThermalAvailable
Heat Conduction Calculator
Calculate steady-state solid conduction, Fourier's law heat transfer, heat flux, required conductivity, required thickness, and composite wall heat flow.
ThermalAvailable
Thermal RC Time Constant Calculator
Calculate thermal time constant, first-order heating response, cooling response, time to target temperature, thermal capacitance, and required thermal R/C values.
ThermalAvailable
Convection Heat Transfer Calculator
Calculate convection heat transfer rate, heat flux, convective thermal resistance, required h, required area, and surface or fluid temperature.
ThermalAvailable
Electronics Enclosure Temperature Rise Calculator
Estimate enclosure temperature rise, internal air temperature, required Rθ, effective UA, heat-rejecting area, allowable heat load, and ideal ventilation airflow.
ThermalAvailable
Temperature Coefficient Calculator
Calculate first-order temperature drift, ppm per degree, percent per degree, absolute coefficient change, target temperature, and worst-case range.
How to Use These Calculators
Start From the Engineering Question
Choose the calculator that matches the decision you need to make: decode a component marking, size a value, check a frequency response, estimate loss, or verify a safety margin. A category page is useful only when it helps you reach a working tool, so this page lists released calculators only.
Check Units and Assumptions
Calculator results depend on unit choices, idealized formulas, tolerance, temperature, frequency range, and component limitations. Review the formula and engineering notes on each calculator page before using the result in a schematic, BOM, or PCB layout.
Validate Against Real Parts
Use the calculated value as a design reference, then confirm it against datasheets, derating curves, layout parasitics, measurement conditions, and manufacturer limits. The related guides below provide background when a calculation needs more context.
Engineering Applications
Junction temperature
Thermal resistance
Heat sinks
Electronics cooling
Related Engineering Guides
Engineering Guide
Transient Thermal Design: Pulses, Duty Cycle, Thermal Impedance, and Validation
Design electronics for pulsed heating with thermal RC models, repeated-duty peak temperature, transient thermal impedance, model limits, and measured validation.
17 min · Advanced
Engineering Guide
Temperature Coefficients and Drift: ppm/°C, Linear Models, and Error Budgets
Calculate temperature-driven parameter drift using signed ppm/°C, percent per degree, linear coefficients, model boundaries, and practical error budgets.
16 min · Intermediate
Engineering Guide
Thermal Design Workflow for Electronics: Junction, Case, Board, Heat Sink, and Enclosure
Build and verify electronics thermal paths using power loss, thermal resistance networks, junction limits, heat sinks, TIMs, conduction, convection, transient response, and enclosure constraints.
22 min · Intermediate
Engineering Guide
Resistive Temperature Sensing with NTC Thermistors and RTDs
Design NTC thermistor and PT100/PT1000 measurement circuits with correct models, excitation, self-heating, wiring compensation, ADC interfaces, calibration, and error budgets.
20 min · Intermediate
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PCB calculators for trace design, copper thickness, current capacity, thermal design, and board-level constraints.
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