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Need Spice model for D965 npn transistor to simulate in Ltspice

polashd

Member
Dear all

I've a bunch of D965 and want to use in various hobby circuits.
While designing I use Ltspice simulation to get idea of the circuit's behavior at different conditions.

Unfortunately I don't have spice model of D965 to use in Ltspice.
I searched through google- with no luck!

Can anyone please provide me the spice model of D965.

I attached the Datasheet of D965 npn transistor.

b. rgds.
Polash
 

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  • D965.PDF
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Papabravo

Well-Known Member
Extracting the spice parameters of a device from the datasheet is a more than ordinarily challenging proposition. I don't know anybody who claims to have done it successfully. The is even a problem with the verification of numerous models out there for the same part that produce wildly different results. e.g. The TIP31C. I know of 15 different models extant that purport to be the one and only, I know which ones are credible. The rest are not.

Best of Luck to you,

EDIT: I found a sort of match in one of the libraries from @Bordodynov You're welcome to give it a whirl. Let us know if it helps.

.model 2sd965 npn IS=569.2f BF=400 NF=0.9993 VAF=80 IKF=4.444 ISE=2.7373p NE=1.6036 BR=10.2 NR=1.03 VAR=30 IKR=0.466 ISC=10.56p NC=1.055 RB=200 IRB=270u RBM=50 RE=5m RC=0.5 CJE=251.6p VJE=0.5 MJE=0.3674 TF=7.377E-10 XTF=17.6 VTF=1.31 ITF=7.91 CJC=93.77p VJC=0.6 MJC=0.3283 XCJC=0.5 TR=23n XTB=1.61 EG=1.11 XTI=3 FC=0.5
 

Lightium

Member
.model 2sd965 NPN(Is=133.9E-18 Xti=3 Eg=1.11 Vaf=100
+ Bf=461.4 Ise=198.6E-18 Ne=1.293
+ Ikf=2.823 Nk=.4739 Xtb=1.5 Var=100
+ Br=68.62 Isc=133.9E-18 Nc=2.527
+ Ikr=68.24 Rc=98.37m Cjc=102.5p Mjc=.3051
+ Vjc=.3905 Fc=.5 Cje=5p Mje=.3333 Vje=.75
+ Tr=10n Tf=1n Itf=1 Xtf=0 Vtf=10)
 

Lightium

Member
Since your using LTspice, join the users group:

 

Papabravo

Well-Known Member
.model 2sd965 NPN(Is=133.9E-18 Xti=3 Eg=1.11 Vaf=100
+ Bf=461.4 Ise=198.6E-18 Ne=1.293
+ Ikf=2.823 Nk=.4739 Xtb=1.5 Var=100
+ Br=68.62 Isc=133.9E-18 Nc=2.527
+ Ikr=68.24 Rc=98.37m Cjc=102.5p Mjc=.3051
+ Vjc=.3905 Fc=.5 Cje=5p Mje=.3333 Vje=.75
+ Tr=10n Tf=1n Itf=1 Xtf=0 Vtf=10)
Unfortunately, the only way to compare the two models, aside from simulating them side by side, is to enter the parameters into a spreadsheet so the individual parameters can be compared side by side. It is a PITA, but that is how I selected the credible TIP31C models.
 

Papabravo

Well-Known Member
Since your using LTspice, join the users group:

Like many things in this life the LTspice group is a double-edged sword. They will help if you have a problem with the simulator, or you have a simulation that won't run, but they get very cranky when you ask for circuit help or design advice. Their focus is pretty narrow. The thing that irritates them the most is you not being able to make sense of the LTspice Help files. As far as documentation goes, it leaves a great deal to be desired. The information is there, but it is borderline inaccessible to newcomers. So far it seems that nobody is interested in rectifying this shortcoming of an otherwise extremely valuable resource.
 

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