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Home : Support : Online Help : MapleSim : MapleSim Component Library : Electrical : Spice3 : Semiconductors : JFETs : J_Card

J_Card

Record for JFET parameters

Modelica Standard Library

	Description
	The J_Card record holds the technology parameters of a junction field-effect transistor. Parameters with value $−1 \cdot 10^{40}$ are special default values used to indicate the user has not selected a value. All capacitor parameters must be assigned positive values. MapleSims engine does not currently handle the defective differential equation that occurs when the capacitance is zero.

Parameters

Name	Default	Units	Description	Modelica ID
$C_{GS}$	$−1 \cdot 10^{40}$	$F$	Zero-bias G-S junction capacitance, default 0	CGS
$C_{GD}$	$−1 \cdot 10^{40}$	$F$	Zero-bias G-D junction capacitance, default 0	CGD
$I_{S}$	$1 \cdot 10^{−14}$	$A$	Saturation current of pn junctions	IS
$F_{C}$	$\frac{1}{2}$		Coefficient for forward-bias depletion capacitance formula	FC
$R_{D}$	$−1 \cdot 10^{40}$	$Ω$	Drain ohmic resistance, default 0	RD
$R_{S}$	$−1 \cdot 10^{40}$	$Ω$	Source ohmic resistance, default 0	RS
$T_{NOM}$	$27$	$degC$	Parameter measurement temperature	TNOM
$V_{TO}$	$−1 \cdot 10^{40}$	$V$	Zero-bias threshold voltage, default -2	VTO
$B$	$−1 \cdot 10^{40}$	$\frac{1}{V}$	Doping profile	B
$BETA$	$−1 \cdot 10^{40}$		Output admittance parameter, default 1e-4	BETA
$LAMBDA$	$0$	$\frac{1}{V}$	Channel-length modulation, default 0	LAMBDA
$P_{B}$	$1$	$V$	Junction potential of pn junctions	PB
$A_{F}$	$1$		Flicker noise exponent	AF
$K_{F}$	$0$		Flicker noise coefficient	KF

	Modelica Standard Library
	The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Spice3 Overview

Spice3 Semiconductors

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