Rohm RB557W Spice diode model does not work in MS.

[dbur]

This Spice model does not work for me.  I commented the syntax that may not be recognizable by MS, but no joy.  In simulation it acts like a capacitor with no diode junction.

This is a Rohm RB557W.  I pasted it onto a BAT54A part (keeping the large parallel R's).  I identified the extra parameters in the AIM Spice reference and they didn't seem they should cause a problem. 

http://www.faculty.iu-bremen.de/dknipp/c300442/Aimspice/aimspice_ref.pdf

Commenting those lines also did not help.  Any ideas?

http://www.rohm.com/products/spice/sssbd/lib/rb557w.lib

* DRB557W D model
* Date: 2008/10/20
.MODEL DRB557W D
+ IS=841.87E-9
+ N=1.0844
+ RS=.72135
+ IKF=13.277
+ XTI=2
+ EG=.6
+ CJO=18.647E-12
+ M=.53193
+ VJ=.54317
+ ISR=446.45E-9
+ NR=1.4000
+ BV=30
+ TT=6.9000E-9

[JasonF]

The model behaves fine for me under an IV Analysis and seems to be fully supported.

Ensure when replacing parts of an old model that you match up the names between the diode instance and the diode definition. Also avoid whitespace between lines if possible.

So for your example of replacing the BAT54A model (you can rename the subckt line as well if you want, it should not affect simulation)

.SUBCKT BAT54A A K1 K2
D1 A K1 RB557W
R1 A K1 3.6E+07 
D2 A K2 RB557W
R2 A K2 3.6E+07 
* DRB557W D model
* Date: 2008/10/20
.MODEL RB557W
...
.ENDS

[dbur]

I found out at the part model tab the pin number ordering had changed compared to the BAT54 model.  Setting it back to what the model expected did the trick.  Thanks.