BC549C Spice Model

Jun 30, 2006 3 Replies
M

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!



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W

Did you look for models of BC546 through BC549? For example, my spice library only has six of the 10 possibilities in the series. Also, a raft of other manufacturers make these parts.

Thanks, - Win
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L

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

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P
** Groper alert !!

** The BC549C differs from other BC549s only in that particular devices have been selected so the Hfe is within the range of 420 to 800.

( source, Philips Data book 1978 )

...... Phil

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