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<< Click to Display Table of Contents >> Navigation: Designing a PCB with DEX > Projects > Circuit Simulation > The Spice Reference Manual > Circuit Description > Circuit Elements and Models > Semiconductor Capacitor Model |
The capacitor model contains process information that may be used to compute the capacitance from strictly geometric information.
name |
parameter |
units |
default |
example |
CJ |
junction bottom capacitance |
F/meter/meter |
- |
5e-5 |
CJSW |
junction sidewall capacitance |
F/meter |
- |
2e-11 |
DEFW |
default device width |
meters |
1e-6 |
2e-6 |
NARROW |
narrowing due to side etching |
meters |
0 |
1e-7 |
The capacitor has a capacitance computed as