This information is part of the Modelica Standard Library maintained by the Modelica Association.

The simple diode is an electrical one port, where a heat port is added, which is defined in the Modelica.Thermal library. It consists of the diode itself and a parallel ohmic resistance R. If useTemperatureDependency is set to true, the diode formula is:

           v/N/vt_t
i = Ids (e          - 1)

where vt_t depends on the temperature of the heat port:

vt_t = k*temp/q

If useTemperatureDependency is set to false, the diode formula utilizes the voltage equivalent of the temperature, i.e.,

           v/Vt
i = Ids (e      - 1).

If the exponent v/N/vt_t or v/Vt, respectively, reaches the limit Maxexp, the diode characteristic is linearly continued to avoid overflow.
The thermal power is calculated by i*v.

useHeatPort	Value: useTemperatureDependency Type: Boolean Description: = true, if heatPort is enabled
T	Value: 293.15 Type: Temperature (K) Description: Fixed device temperature if useHeatPort = false
Ids	Value: 1e-6 Type: Current (A) Description: Saturation current
useTemperatureDependency	Value: false Type: Boolean Description: = true, if the diode current depends on temperature, otherwise utilizes the voltage equivalent of temperature
Vt	Value: 0.04 Type: Voltage (V) Description: Voltage equivalent of temperature (kT/qn)
Maxexp	Value: 15 Type: Real Description: Max. exponent for linear continuation
R	Value: 1e8 Type: Resistance (Ω) Description: Parallel ohmic resistance
EG	Value: 1.11 Type: Real Description: Activation energy
N	Value: 1 Type: Real Description: Emission coefficient
TNOM	Value: 300.15 Type: Temperature (K) Description: Parameter measurement temperature
XTI	Value: 3 Type: Real Description: Temperature exponent of saturation current

• March 11, 2009 by Christoph Clauss
  conditional heat port added
  
• April 5, 2004 by Christoph Clauss
  implemented