Surface mount diode
Unidirectional and
Bidirectional Transient
Voltage Suppressor
diodes
P4 SMA 6,8 ... P4 SMA 400CA
Pulse Power
Dissipation: 400 W
Stand-off
voltage: 5,5 ... 342 V
Features
   
   
 !"#$
% &  ' ( ))
 )*)+  
' &  
,      
&-. /0   '
 123 4 )*)  
   153  
&-. /0
Mechanical Data
  4* 6 78$2"*
90  :; 0
,    
&  <$4,7$;5
  0    '
4  -0 0 ;5 
 
1) = $/     /
< > (+
2)    & . 5 
     
3)      '
4) ?    '
Absolute Maximum Ratings ,*> 5 :   . 
Symbol Conditions Values Units
 -  . 
(262 A ./+ 2+ ,> 5 
" 9
(*#+ 4'  .  +: ,> 5

2 9
<%4 - . 0  :  BC 
 $./: D+ ,> 5 
" *
E*     F  
&  +
; G69
E,     F  
 
D G69
,F8 0 F   $ 5  H 25 
,40  $ 5  H 25 
#    . /0 <>5*D+ #?EI#: #%JD:5 #
#?EK#: #%J:5 #

,' 4 $
/0L<7
?-.
/0L<,
,
 
<,
  0
/0L<
#9 <7   #<
# M* # # * # *
" 4* :N 5:5 2 :2 ;:"N 2 2:N DN
" 4* :N* 5:N 2 :"5 ;:2" 2 2:5 "
" 4* ;:5 :5 5 :;5 N:5 2 22:; D5
" 4* ;:5* :" 5 ;:2D ;:NN 2 22:D D;
" 4* N: :D  ;:DN !: 2 2:5 DD
" 4* N:* ;:  ;:;! N:2 2 2:2 D"
" 4* !:2 ;:D; 5 N:2! 2 2 2D:N D
" 4* !:2* ;:;N 5 N:5 !:55 2 2D:" D2
" 4* 2 N:2 2 ! 22 2 25 N
" 4* 2* N:55 2 !:5 2:5 2 2":5 !
" 4* 22 N:! 5 !:! 2:2 2 2: 
" 4* 22* !:" 5 2:5 22: 2 25: ;
" 4* 2 !:; 5 2:N 2D: 2 2;:D "
" 4* 2* 2: 5 22:" 2: 2 2:; 5
" 4* 2D 2:5 5 22:; 2":D 2 2! 
" 4* 2D* 22:2 5 2:" 2D:; 2 2N: D
" 4* 25 2:2 5 2D:5 2:5 2  2!
" 4* 25* 2:N 5 2":D 25:N 2 2: 
" 4* 2 2:! 5 2":" 2;: 2 D:5 2;:N
" 4* 2* 2D: 5 25: 2:N 2 :5 2N:
" 4* 2N 2":5 5 2: 2!:N 2 :5 2
" 4* 2N* 25:D 5 2;:2 2N:! 2 5:5 2:5
" 4*  2: 5 2N  2 !:2 2"
" 4* * 2;:2 5 2! 2 2 ;:; 25
" 4*  2;:N 5 2!:N ": 2 D2:! 2D
" 4* * 2N:N 5 :! D:2 2 D: 2D:;
" 4* " 2!:" 5 2: :" 2 D":; 2
" 4* "* :5 5 :N 5: 2 DD: 2:
" 4* ; 2:N 5 ":D !:; 2 D!:2 2:;
" 4* ;* D:2 5 5:; N:" 2 D;:5 22
" 4* D ":D 5 ; DD 2 "D:5 !:
" 4* D* 5: 5 N:5 D2:5 2 "2:" 2
" 4* DD :N 5 !:; D:D 2 ";:; N:N
" 4* DD* N: 5 D2:" D":; 2 "5:; !
" 4* D !:2 5 D:" D!: 2 5 N
" 4* D* D:N 5 D": D;:N 2 "!:! N:"
" 4* D! D2: 5 D5:2 ":! 2 5:" ;:"
" 4* D!* DD:D 5 D;:2 "2 2 5D:! ;:;
" 4* "D D":N 5 DN:; ";:D 2 2:! :;
P4 SMA 6,8 ... P4 SMA 400CA
1 04-09-2009 MAM © by SEMIKRON

,' 4 $
/0L<7
?-.
/0L<,
,
 
<,
  0
/0L<
#9 <7   #<
# M* # # * # *
" 4* "D* D:N 5 ":! "5: 2 5!:D ;
" 4* "; DN:2 5 ":D 52:; 2 ;:N :
" 4* ";* ": 5 "":; "!:" 2 ":N :"
" 4* 52 "2:D 5 "5:! 5:2 2 ;D:5 5:;
" 4* 52* "D: 5 "N:5 5D: 2 ;:2
" 4* 5 "5:" 5 5:" 2: 2 N:5 5:
" 4* 5* ";:N 5 5D: 5N:N 2 ;; 5:"
" 4*  5: 5 55:N N: 2 N! ":;
" 4* * 5D 5 5N:! 5:2 2 N5 5
" 4* N 55:2 5 2: ;":N 2 !N ":
" 4* N* 5N:2 5 ": ;2:" 2 ! ":5
" 4* ;5 :; 5 ;:5 N:5 2 2N D:N
" 4* ;5* ":2 5 ;2:D ;N:N 2 2D "
" 4* N :" 5 ;D:N !: 2 22N D:5
" 4* N* ;:2 5 ;;:! N:2 2 22D D:;
" 4* !2 ;D:; 5 N2:! 2 2 2D2 D:
" 4* !2* ;;:N 5 N:5 !5:5 2 25 D:D
" 4* 2 N2 5 ! 22 2 2"" :!
" 4* 2* N5:5 5 !5 25 2 2D; D
" 4* 22 N!: 5 !! 22 2 25N :
" 4* 22* !" 5 25 22 2 25 :;
" 4* 2 !;: 5 2N 2D 2 2;D :"
" 4* 2* 2 5 22" 2 2 25 :5
" 4* 2D 25 5 22; 2"D 2 2N; :
" 4* 2D* 222 5 2" 2D; 2 2;! :D
" 4* 25 22 5 2D5 25 2 25 2:!
" 4* 25* 2N 5 2"D 25N 2 ;
" 4* 2 2D 5 2"" 2; 2 D 2:N
" 4* 2* 2D 5 25 2N 2 2! 2:!
" 4* 2; 2DN 5 25D 2N; 2 "" 2:;
" 4* 2;* 2"5 5 2 2;! 2 D" 2:N
" 4* 2N 2" 5 2 2!N 2 5N 2:
" 4* 2N* 25" 5 2;2 2N! 2 " 2:;
" 4*  2 5 2N  2 N; 2:"
" 4* * 2;2 5 2! 2 2 ;" 2:52
" 4* "+ 2;5 5 2!N " 2 D"" 2:
" 4* *"+ 2N5 5 ! D2 2 DN 2:
"4* 5"+  5 5 ;5 2 D 2:2
"4* 5*"+ 2" 5 D; D 2 D"" 2:
"4* D"+ "D 5 ; DD 2 "D :!D
"4* D*"+ 5 5 N5 D25 2 "2" :!;
"4* D5"+ N" 5 D25 DN5 2 5" :;!
"4* D5*"+ D 5 DD DN 2 "N :ND
"4* ""+ D" 5 D "" 2 5;" :;
"4* "*"+ D" 5 DN " 2 5"N :;D
Dimensions in mm
P4 SMA 6,8 ... P4 SMA 400CA
2 04-09-2009 MAM © by SEMIKRON
 4* 6 78$2"*
Fig. 1 10/1000 µs - pulse waveform Fig. 2 Rated power dissipation vs. ambient temp. 2)
Fig. 3 Peak pulse power versus pulse duration
P4 SMA 6,8 ... P4 SMA 400CA
3 04-09-2009 MAM © by SEMIKRON