================X_SECTIONS=====================


         _____________                      _____________
        /  ____      /                     /  ____      /
       / -/___/|--  /    Min Nwell        / -/___/|--  /
      / / |___|/ / /____ ..............__/ / |___|/ / /    
    _/_/________/______/______________/___/________/_/________  
     | | n+imp |       |  p+imp      |    | n+imp |  | p+imp   
     |  \_____/        \_____________/     \_____/   | 
     |                               nwell           |  pwell 
      \_____________________________________________/ 
                            
              P-Substrate


           ________________________________________________________
          /               _____________________                   /
         /  ____________ /..................../_______________   /
        / / ________    /                    /     ________  /  /
       / / /____   /   /    ____            /     /____   / /  /
      / / //___/| /   /    /___/|          /     //___/| / /  /
     / / / |___|//   /     |___|/         /     / |___|// /  /
   _/_/_/_______/___/____________________/_____/_______/_/__/___
    | | | p+imp |  |       n+imp         |     | p+imp | |  |
    |  \ \_____/    \___________________/ base  \_____/ /   |
    |   \______________________________________________/    |
    |  _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  _ _ _ _ _ _ _ |
    |/   N BURIED LAYER                                    \|
     \ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ /
            P-Substrate

                                



                               Poly is shorted to Emitter
               ________________________________________________
              /                           NWELL               /
             /    ______________________________   ______    /
            /    /____ C                       / /       /  /
           /    //___/|       ____POLY   P+   / /       /  /
          /    / |___|/      /___/|_         / /       /  /
         /    /       ______/|___|//|       / /  N+   /  /
        /    /      /  ________   / /      / /       /  /
       /    /      /  /|______/  / /      / /       /  /
      /    /      /  / /___E /  / /      / /____B  /  /
     /    /      /  / /___/|/  / /      / //___/| /  /
    /    /      /__/ /|___|/__/ /      / / |___|//  /
   _/___/_______|__|/______|__|/______/_/_______/__/____
    |   |  P+   |  |   P+  |  |   P+  | |   N+  |  |
    |    \_____/    \_____/    \_____/   \_____/   |
    |           Base       NWELL                   |
    |  _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |  _ ______
    |/   N BURIED LAYER                           \|/
     \ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _/ \ _ tor in





                   _______________________________
                  /............................. /
                 /. _________________________ . /
                /. /                        /. /
               /. /                        /. /
              /. /                        /. /
             /. /                        /. /
            /. /                        /. /
           /. /                        /. /
          /. /                        /. /
         /. /                        /. /
        /. /                        /. /
_______/. /________________________/. /____________________
       |..|                        |..|
       |..|   n40x5x1w             |..|   NPN transistor in
       |..|________________________|..|   oxide tub
       |..............................|
       |______________________________|





*                    /                H                         /
*               ____/__________________________________________/______
*              /...................................................../
*             /...................................................../
*        ___ /....___________________________________________....../
*           /..../   n40x5x1                                /...../
*          /..../  ________________________                /...../
*         /..../ / ________    _________  /    ________   /...../
*     W  /..../ / /____ B /   /____ E  / /    /____ C /  /...../
*       /..../ / //___/| /   //___/|  / /    //___/| /  /...../
*      /..../ / / |___|//   / |___|/ / /    / |___|//  /...../
*   __/____/_/_/_______/___/________/_/____/_______/__/_____/___
*     |....| | | p+imp |  |  n+imp  | |    | n+imp |  |.....|
*     |....|  \ \_____/base\_____ _/ /      \_____/   |.....|
*     |....|   \____________________/                 |.....|  D
*     |....|  _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |.....|
*     |....|/   N BURIED LAYER                       \|.....|
*     |.....\________________________________________/......|___
*     |.....................................................|
*     |.....................................................| T
*     |_____________________________________________________|___
*
*
*     Rth = Rho*T/( 2*W*D +2*H*D + W*D)   =
*     Cth = Cv*W*H*D                      =
*
*     Rho = 148uW/(um*K)
*     Cv  = 760 J/Kg-K
*     H   =40u  W =5u  D =4u T =1u
*

        _______________________________________
       / _______________________              /
      / / ________   ________  /  ________   /
     / / /____ B /  /____ E / /  /____ C /  /
    / / //___/| /  //___/| / /  //___/| /  /
   / / / |___|//  / |___|// /  / |___|//  /
 _/_/_/_______/__/_______/_/__/_______/__/______________
  | | | p+imp |  | n+imp | |  | n+imp | |    P+Field   |
  |  \ \_____/Base\_____/ /    \_____/  |              |
  |   \__________________/NWELL| CapI|  |  PWELL       |
  |  _ _ _ _ _ _ _ _ _ _ _ _ _ |     |_ |  _ _ _ _ _ _ |
  |/   N BURIED LAYER           \ _ /  \|/ P buryLay  \|
   \ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ / \ _ _ _ _ _ _/



          ________________________________________________________
         /               _____________________                   /
        /  ____________ /..................../_______________   /
       / / ________    /                    /     ________  /  /
      / / /____ 1 /   /    ____ 2          /     /____ 3 / /  /
     / / //___/| /   /    /___/|          /     //___/| / /  /
    / / / |___|//   /     |___|/         /     / |___|// /  /
  _/_/_/_______/___/____________________/_____/_______/_/__/___
   | | | p+imp |  |       n+imp         |     | p+imp | |  |
   |  \ \_____/    \___________________/ base  \_____/ /   |
   |   \______________________________________________/    |
   |  _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  _ _ _ _ _ _ _ |
   |/   N BURIED LAYER                                    \|
    \ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ /
           P-Substrate