
FRD Type : FSF05A40B      
FSF05A40B      OUTLINE DRAWING 
FSF05A40B      FSF05A40B      
FEATURES 
* Fully Molded Isolation Case 
* Ultra – Fast Recovery 
* Low Forward Voltage Drop 
* Low Power Loss, High Efficiency 
* High Surge Capability 
* 200 Volts thru 600 Volts Types Available 
 Maximum Ratings                 Approx Net Weight:1.75g 
Rating 
Repetitive Peak Reverse Voltage  V 
Non-repetitive Peak Reverse Voltage  V
Average Rectified Output Current  IO 5 
RMS Forward Current  I 
Surge Forward Current  I 
Operating JunctionTemperature Range 
Storage Temperature Range 
Mounting torque    0.5 Recommended value  N•m 
Symbol FSF05A40B 
 400 V 
RRM
 440  
RSM
Tc=118°C 
 7.85 A 
F(RMS)
 80 
FSM
50 Hz Half Sine Wave,1cycle 
Non-repetitive 
50 Hz Half Sine Wave  
Resistive Load 
Tjw  - 40 to + 150 
Tstg  - 40 to + 150 
Unit 
A 
A 
°C  
°C 
 Electrical • Thermal Characteristics 
Characteristics 
Peak Reverse Current 
Peak Forward Voltage 
Symbol Conditions Min. Typ. Max. Unit 
I
RM
V
FM
Reverse Recovery Time  trr 
Thermal Resistance 
Rth(j-c) Junction to Case  -  -  5 
Rth(c-f) Case to Fin  -  -  1.5 
Tj= 25°C, V 
Tj= 25°C, I
= 5A, 
I
FM
RM
FM
= V
= 5A 
RRM
-di/dt= 50 A/µs, Ta= 25°C 
- - 30 
µA 
- - 1.25 V 
- - 45 ns 
°C/W 
 

FSF05A40B OUTLINE DRAWING (Dimensions in mm)