Re: BC549C Spice Model


Michael wrote:
Hello!

Just a quick question - does anyone out there know where I might get
hold of a spice model for the BC549C ? I've searched around on the
internet, but so far I havn't managed to find anything. Philips
Semiconductor seem to have spice models for every transistor under the
sun, except this one!

Thanks!

The SPICE I use has the BC546B as an alias for the BC549, here is the
model:

*From Philips SC04 "Small signal transistors 1991"
* Base spreading parameters (RB,IRB,RBM) estimated. TR derived using
BCY58 data
..model BC546B npn ( IS=7.59E-15 VAF=73.4 BF=480 IKF=0.0962 NE=1.2665
+ ISE=3.278E-15 IKR=0.03 ISC=2.00E-13 NC=1.2 NR=1 BR=5 RC=0.25
CJC=6.33E-12
+ FC=0.5 MJC=0.33 VJC=0.65 CJE=1.25E-11 MJE=0.55 VJE=0.65
TF=4.26E-10
+ ITF=0.6 VTF=3 XTF=20 RB=100 IRB=0.0001 RBM=10 RE=0.5 TR=1.50E-07)

Leon

.