| Component | Syntax |
| Special functions | Axx n1 n2 n3 n4 n5 n6 n7 n8 + <model> [extra parameters] |
| Arbitrary behavioral source | Bxx n+ n- <V=... or I=...> |
| Capacitor | Cxx n+ n- <capacitance> + [ic=<val.>] [Rser=<val.>] + [Lser=<val.>] [Rpar=<val.>] + [Cpar=<val.>] [m=<val.>] |
| Diode | Dxx A K <model> [area] |
| Voltage dependent voltage | Exx n+ n- nc+ nc- <gain> |
| Current dependent current | Fxx n+ n- <Vnam> <gain> |
| Voltage dependent current | Gxx n+ n- nc+ nc- <transcond.> |
| Current dependent voltage | Hxx n+ n- <Vnam> <transres.> |
| Independent current source | Ixx n+ n- <current> |
| JFET transistor | Jxx D G S <model> [area] [off] +[IC=<Vds,Vgs>] [temp=<T>] |
| Mutual inductance | Kxx L1 L2 L3... <coeff.> |
| Inductance | Lxx n+ n- <inductance> + [ic=<val.>] [Rser=<val.>] + [Rpar=<val.>] + [Cpar=<val.>] [m=<val.>] |
| MOSFET transistor | Mxx D G S B <model> [L=<len>] + [W=<width>] [AD=<area>] + [AS=<area>] [PD=<perim>] + [PS=<perim>] [NRD=<value>] + [NRS=<value>] [off] + [IC=<Vds, Vgs, Vbs> + [temp=<T>] |
| Lossy transmission line | Oxx L+ L- R+ R- <model> |
| Bipolar transistor | Qxx C B E [S] <model> [area] + [off] [IC=Vbe,Vce][temp=<T>] |
| Resistor | Rxx n1 n2 <value> |
| Voltage controlled switch | Sxx n1 n2 nc+ nc- <model> + [on,off] |
| Lossless transmission line | Txx L+ L- R+ R- ZO=<value> + TD=<value> |
| Uniform RC-line | Uxx n1 n2 ncommon <model> + L=<len> [N=<lumps>] |
| Independent voltage source | Vxx n+ n- <voltage> |
| Current controlled switch | Wxx n1 n2 <Vnam> <model> + [on,off] |
| Subcircuit | Xxx n1 n2 n3... <subckt name> |
| MESFET or IGBT transistors | Zxx D G S model [area] [off] + [IC=<Vds,Vgs>] |