A list of devices or rather models which have been tested in EasyEDA are given in: https://easyeda.com/forum/topic/How_to_find_simulatable_parts_in_EasyEDA-1YgasK2kC Not all devices in the list given in that post have dedicated symbols but the names of the appropriate symbols in `Simulation Components` can be changed to those in the list of models given in the post. The EasyEDA Simulation eBook describes how to add 3rd party models to symbols but this can be tricky unless the model is available in SPICE3 format. If there is a model that you need please post back and I will try to find or create one.

Even if you ad Spice3 models, the simulation works a couple of times, then it drops the "Circuit: good* no system model for bcxxx , you can create a model by yourself". What about expanding the list of suported sim models with these: .MODEL 2N5401C pnp +IS=25e-15 BF=220 VAF=196 +IKF=0.2 ISE=2e-15 NE=1.4 NF=1 +RB=60 RC=2 RE=0.1 +CJE=35e-12 MJE=0.40 VJE=0.75 +CJC=15e-12 MJC=0.55 VJC=0.75 FC=0.5 +TF=800e-12 XTF=60 VTF=0 ITF=4 +TR=1.5e-9 BR=4 IKR=0 +EG=1.1 XTB=1.5 XTI=3 NC=2 +ISC=0 mfg=CA031011 .MODEL 2N5551C npn +IS=9e-15 BF=125 VAF=667 +IKF=0.09 ISE=1e-15 NE=1.3 NF=1 +RB=92 RC=1 RE=0.1 +CJE=45e-12 MJE=0.35 VJE=0.75 +CJC=4.9e-12 MJC=0.30 VJC=0.75 FC=0.5 +TF=565e-12 XTF=300 VTF=5 ITF=2.0 +TR=1.2e-9 BR=3 IKR=0 +EG=1.1 XTB=1.5 XTI=3 NC=2 +ISC=0 mfg=CA031011 * .MODEL 2SA1381C pnp +IS=50e-15 BF=160 VAF=328 +IKF=0.5 ISE=10e-15 NE=1.5 NF=1 +RB=17 RC=4.1 RE=0.05 +CJE=71e-12 MJE=0.35 VJE=0.75 +CJC=8e-12 MJC=0.35 VJC=0.55 FC=0.5 +TF=900e-12 XTF=10000 VTF=35 ITF=20 +TR=1e-9 BR=1.6 IKR=0.09 +EG=0.6 XTB=0.9 XTI=3 NC=2 +ISC=3.2e-10 VAR=100 mfg=CA031111 * .MODEL 2SC3503C npn +IS=40e-15 BF=170 VAF=769 +IKF=0.08 ISE=200e-15 NE=1.5 NF=1.0 +RB=75 RC=1.5 RE=0.1 +CJE=95e-12 MJE=0.35 VJE=0.75 +CJC=7e-12 MJC=0.35 VJC=0.75 FC=0.5 +TF=585e-12 XTF=10000 VTF=35 ITF=20 +TR=10e-9 BR=0.6 IKR=0.05 +EG=0.75 XTB=1.5 XTI=3 NC=1.5 +ISC=7e-15 NR=1.0 VAR=100 IRB=3e-6 +RBM=0.035 XCJC=1.0 mfg=CA031111 * .MODEL BC550C npn +IS=45e-15 BF=689 VAF=162 +IKF=0.09 ISE=4600e-15 NE=2 NF=0.9965 +RB=167 RC=1 RE=0.04 +CJE=18.7e-12 MJE=0.35 VJE=0.75 +CJC=6.2e-12 MJC=0.25 VJC=0.4 FC=0.5 +TF=595e-12 XTF=10 VTF=10 ITF=1 +TR=10e-9 BR=12.2 IKR=0.34 +EG=1.2 XTB=1.65 XTI=3 NC=0.996 +NR=1.0 VAR=120 IRB=7e-5 RBM=1.1 +XCJC=0.6 +ISC=5e-15 mfg=CA030111 * .MODEL BC560C pnp +IS=60e-15 BF=900 VAF=160 +IKF=0.10 ISE=70e-15 NE=1.42 NF=1 +RB=170 RC=1.0 RE=0.05 +CJE=19e-12 MJE=0.3 VJE=0.75 +CJC=3.9e-12 MJC=0.3 VJC=0.75 FC=0.5 +TF=600e-12 XTF=7 VTF=4 ITF=0.45 +TR=10e-9 BR=3 IKR=0 +EG=1.1 XTB=1.5 XTI=3 NC=2 +ISC=0 mfg=CA030211 * .MODEL BD139C npn +IS=150e-15 BF=260 VAF=99 +IKF=1.2 ISE=70e-15 NE=1.2 NF=1.0 +RB=5 RC=0.01 RE=0.08 +CJE=293e-12 MJE=0.33 VJE=0.67 +CJC=49e-12 MJC=0.39 VJC=0.52 FC=0.5 +TF=585e-12 XTF=10000 VTF=35 ITF=20 +TR=10e-9 BR=78 IKR=0.14 +EG=1.21 XTB=1.14 XTI=3 NC=1.45 +ISC=19e-12 NR=1.0 VAR=7.5 IRB=0.03 +RBM=0.001 XCJC=0.53 mfg=CA041311 * .MODEL BD140C pnp +IS=120e-15 BF=113 VAF=140 +IKF=1.5 ISE=1000e-15 NE=1.5 NF=1 +RB=5 RC=0.01 RE=0.1 +CJE=220e-12 MJE=0.35 VJE=0.7 +CJC=68e-12 MJC=0.35 VJC=0.6 XCJC=0.5 FC=0.5 +TF=320e-12 XTF=10000 VTF=35 ITF=20 +TR=100e-9 BR=25 IKR=0.1 +EG=1.2 XTB=1.5 XTI=3 NC=1.4 +ISC=7e-12 NR=1.0 VAR=8 IRB=0.01 RBM=0.01 mfg=CA041311 * .MODEL MJE243C npn +IS=800e-15 BF=190 VAF=1177 +IKF=1.2 ISE=10e-12 NE=1.7 NF=1.06 +RB=45 RC=0.2 RE=0.01 +CJE=210e-12 MJE=0.4 VJE=1.0 +CJC=85e-12 MJC=0.3 VJC=0.4 FC=0.58 +TF=3300e-12 XTF=7 VTF=11 ITF=5 +TR=1000e-9 BR=1.7 IKR=1.0 +EG=1.05 XTB=1.2 XTI=0.8 NC=2.9 +ISC=1e-16 NR=1.04 VAR=140 IRB=5e-5 +RBM=0.001 XCJC=0.8 mfg=CA031111 * .MODEL MJE253C pnp +IS=300e-15 BF=150 VAF=310 +IKF=1.2 ISE=30e-12 NE=2 NF=1.015 +RB=40 RC=0.3 RE=0.01 +CJE=150e-12 MJE=0.35 VJE=1.0 +CJC=55e-12 MJC=0.2 VJC=0.35 FC=0.55 +TF=3300e-12 XTF=7 VTF=10 ITF=5 +TR=1000e-9 BR=4 IKR=4.4 +EG=1.05 XTB=1.3 XTI=0.01 NC=2.9 +ISC=6e-13 NR=1.15 VAR=50 IRB=7e-6 +RBM=0.001 XCJC=0.8 mfg=CA041611 * .MODEL MJE15032C npn + IS=50e-12 BF=105 VAF=2000 + IKF=9.0 ISE=10e-12 NE=2 NF=1.2 + RB=16 RBM=0.1 IRB=0.1 RC=0.1 + CJE=3.1e-9 MJE=0.35 VJE=0.65 RE=0.01 + CJC=0.3e-9 MJC=0.4 VJC=0.6 FC=0.5 + TF=3.8e-9 XTF=4 VTF=10 ITF=2 + TR=100e-9 BR=6 VAR=15 NR=1.5 + EG=1.2 XCJC=0.8 XTB=0.7 XTI=1.05 + NC=4 ISC=0.4e-12 + IKR=5.2 mfg=CA032911 * .MODEL MJE15033C pnp + IS=300e-12 BF=160 VAF=500 + IKF=3.0 ISE=10e-12 NE=2 NF=1.3 + RB=5 RBM=0.1 IRB=0.1 RC=0.5 + CJE=3.1e-9 MJE=0.35 VJE=0.65 RE=0.01 + CJC=0.3e-9 MJC=0.4 VJC=0.6 FC=0.5 + TF=3.7e-9 XTF=4 VTF=10 ITF=2 + TR=100e-9 BR=5 VAR=15 NR=1.5 + EG=1.05 XCJC=0.8 XTB=0.22 XTI=1.0 + NC=4 ISC=0.3e-12 + IKR=7.5 mfg=CA041611 * .MODEL mjl21193C pnp + IS=1.6e-12 BF=110 VAF=300 + IKF=4 ISE=5e-12 NE=1.5 NF=0.95 + RB=2.0 RBM=2.0 IRB=10 RC=0.06 + CJE=13e-9 MJE=0.35 VJE=0.5 RE=0.001 + CJC=1.5e-9 MJC=0.5 VJC=0.6 FC=0.5 + TF=24e-9 XTF=1.0 VTF=10 ITF=10 + TR=100e-9 BR=5 VAR=100 NR=1.1 + EG=1.1 XCJC=0.96 XTB=0.1 XTI=1.0 + NC=4 ISC=0.3e-12 mfg=CA112210 * .MODEL mjl21194C npn + IS=4e-12 BF=70 VAF=500 + IKF=14 ISE=1.2e-9 NE=2.0 NF=1.01 + RB=3.4 RBM=0.1 IRB=1.0 RC=0.06 + CJE=8e-9 MJE=0.35 VJE=0.5 RE=0.01 + CJC=1.2e-9 MJC=0.5 VJC=0.6 FC=0.5 + TF=21e-9 XTF=90 VTF=10 ITF=100 + TR=100e-9 BR=5 VAR=100 NR=1.1 + EG=1.1 XCJC=0.96 XTB=0.1 XTI=1.0 + NC=4 ISC=0.3e-12 mfg=CA112210 * .MODEL MJL1302C pnp + IS=7e-12 BF=114 VAF=550 + IKF=30 ISE=1e-7 NE=5 NF=1.0 + RB=3.3 RC=0.1 + CJE=16e-9 MJE=0.45 VJE=0.8 RE=0.0 + CJC=2.3e-9 MJC=0.4 VJC=0.3 FC=0.1 + TF=3.0e-9 XTF=1000 VTF=2 ITF=150 + TR=100e-9 BR=5 VAR=4.3 NR=1.1 + EG=1.1 XCJC=1.0 XTB=0.1 XTI=1.0 + NC=4 ISC=0.3e-12 + IKR=4.5 CJS=0 VJS=0.75 MJS=0.5 + PTF=0 KF=0 AF=1 Vceo=200 + Icrating=15 mfg=CA041611 * .MODEL MJL3281C npn + IS=5e-12 BF=158 VAF=1000 + IKF=50 ISE=20e-12 NE=1.5 NF=1.0 + RB=3.0 RC=0.1 + CJE=11e-9 MJE=0.35 VJE=0.5 RE=0.0 + CJC=1.2e-9 MJC=0.5 VJC=0.6 FC=0.1 + TF=2.7e-9 XTF=7500 VTF=3 ITF=750 + TR=100e-9 BR=5 VAR=4.3 NR=1.1 + EG=1.1 XCJC=1.0 XTB=0.12 XTI=1.0 + NC=4 ISC=0.3e-12 + IKR=4.4 CJS=0 VJS=0.75 MJS=0.5 + PTF=0 KF=0 AF=1 Vceo=200 + Icrating=15 mfg=CA041611 * .model irfp240C VDMOS(nchan Vto=4.0 Kp=4.8 Lambda=0.0032 Rs=0.01 Rd=0.1 Rds=1e7 Cgdmax=2600p Cgdmin=10p a=0.35 Cgs=1250p Cjo=3000p m=0.75 VJ=2.5 IS=4.0E-06 N=2.4) * .model irfp9240C VDMOS(pchan Vto=-3.76 Kp=9 Lambda=0.004 Rs=0.064 Rd=0.1 Rds=1e7 Cgdmax=1200p Cgdmin=15p a=0.26 Cgs=1130p Cjo=2070p m=0.68 VJ=2.5 IS=4.0E-06 N=2.4) * .model 1N4148C D(Is=5n Rs=1.0 N=1.9 Cjo=4p M=.4 tt=20n Iave=200m Vpk=75 mfg=CA112410) * ----------

I use these in spice and they work. but the Easy, is not easy on models?

The models you listed above include information that is not part of the Spice3 (Ngspice) syntax. For example: `Vceo=200 Icrating=15 mfg=CA041611 Iave=200m Vpk=75` are not valid parameters in SPICE3 syntax. These look more like proprietary parameters such as those permitted in LTspice. Also, `VDMOS` is a proprietary MOSFET model available only in LTspice. Such models will therefore not run in EasyEDA. If there are devices that you would like to see included in the EasyEDA library then please post them as a list of desired devices. We will then try to source appropriate models and test them in EasyEDA. In the meanwhile, please read: https://easyeda.com/forum/topic/How_to_find_simulatable_parts_in_EasyEDA-1YgasK2kC Thanks.

@andyfierman in reply to your kind proposal I'd like to get the model (or subckt) of Voltage Regulator type L7812 with package TO 220. Afterwards a question: how can I use such model in EasyEDA circuit? Shall I expect to find your model in some list for instance More Libraries--->System Component--> Spice Regulator either in list: More Libraries--->EasyEDA Components or somewhere else? Finally what are useful for, all the components included in the list of "EasyEDA Libs" and those included in all other lists available in the System if they are not active for simulation and -what is worst- are not recognizable and distinguished the active from the non-active ones ? Excuse me for such many doubts. Many many thanks for your availability Giorgio

You'll find LM7812EE in: More Libraries--->System Component--> Spice Regulator

@andyfierman paramount step forward: it works! Maybe I shall need some more tutorial support as I understand that the search for spice active devices is arduous. Thanks again

@andyfierman paramount step forward: it works! Maybe I shall need some more tutorial support as I understand that the search for spice active devices is arduous. Thanks again

The EasyEDA Simulation eBook here: https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub should help you through most things with the examples. Actually getting some models to work can be difficult but we are here to help with that. :)