Thermal Voltage Calculator
Calculate thermal voltage (Vt) for semiconductors at any temperature. Uses Vt = Kt/q to find voltage in volts or millivolts.
semiconductor voltage calc
Thermal voltage [V T ] can be calculated as V T = kT / q . Thermal voltage at 300K is nearly 25.85 mV.
Formula & Table Summary:
- V_H = (B × I) / (n × q × t)
- B in tesla (T)
- I in amperes (A)
- n in carriers per cubic meter (m⁻³)
- t in meters (m)
thermal voltage tool
A Thermal Voltage Calculator calculates the thermal energy variable into a voltage depending on any temperature. Equation: V T = kT/ q. V T is approximated to 25.85 mV at 300K. The thermal voltage is approx. 25.85 mV at room temperature (300 K). The value varies linearly with temperature and is vital to calculations in diode equations, transistors analysis (BJT), and physics of semiconductors. The calculator can be used by engineers and students to swiftly find Vt at any temperature of operation, taking into account that correct modelling of the current-voltage characteristics of devices should be built on Vt measurements.
silicon thermal voltage
| B (T) | I (A) | n (m⁻³) | t (m) | V_H (µV) |
|---|---|---|---|---|
| 0.5 | 0.01 | 8.5×10²⁸ | 0.001 | 36.76 |
| 1.0 | 0.02 | 8.5×10²⁸ | 0.002 | 73.53 |
Frequently Asked Questions - Thermal Voltage Calculator:
What is Hall voltage?
Hall voltage is the voltage generated across a conductor in a magnetic field due to the Hall effect.
How is Hall voltage calculated?
Use V_H = (B × I) / (n × q × t).
What units are used?
B in tesla, I in amperes, n in m⁻³, q in coulombs, t in meters, V_H in volts.
Why is Hall voltage important?
It’s used in magnetic field measurement, current sensing, and position detection.
Does material affect Hall voltage?
Yes, via charge carrier density (n) and type of carriers.
What are typical Hall voltage values?
Often in microvolts for metals, higher for semiconductors.
Can Hall voltage be negative?
Yes, depending on the type of charge carriers (electrons or holes).
Is Hall effect used in cars?
Yes, in wheel speed sensors, throttle position sensors, and current sensors.
Does temperature affect Hall voltage?
Yes, by changing carrier density and mobility.
What is q in the formula?
q is the elementary charge, about 1.602×10⁻¹⁹ coulombs.
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