21201 Itasca St.
Chatsworth, CA 91311
Phone: (818) 701-4933
Fax: (818) 701-4939
SRA251
THRU
SRA257
25 Amp Standard
Recovery Rectifier
50 to 1000 Volts
Features
• Low Cost
• Low Leakage
• Low Forward Voltage Drop
• High Current Capability
• For Automotive Applications
Maximum Ratings
• Operating Temperature: -65°C to +175°C
• Storage Temperature: -65°C to +175°C
Microsemi
Part Number
Maxi mum
Recurrent
Peak Reverse
Voltage
Maxi mum
RMS Voltage
Maximum DC
Blocking
Voltage
SRA251 50V 35V 50V
SRA252 100V 70V 100V
SRA253 200V 40V 200V
SRA254 400V 280V 400V
SRA255 600V 420V 600V
SRA256 800V 560V 800V
SRA257 1000V 700V 1000V
Electrical Character istics @ 25 °C U nless O ther wise Specified
Average Forward
Current IF(AV) 25 A
TA = 55°C
Peak Forward Surge
Current IFSM 400A 8.3ms, half sine
Maxi mum
Instantaneous
Forward Voltage
VF
1.0V IFM = 25A;
TA = 25°C
Maximum DC
Reverse Current At
Rated DC Blocking
Voltage
IR
10µA
150µA
TA = 25°C
TA = 55°C
Maximum Reverse
Recovery Time
Trr
2µs IF=0.5A, IR=25A,
Irr=0.25A
Typical Junction
Capacitance CJ 65pF Measured at
1.0MHz, VR=4.0V
*Pulse Test: Pulse Width 300µsec, Duty Cycle 1%
SRA
DIMENSIONS
INCHES
MM
DIM MIN MAX MIN MAX NOTE
A .332 .342 8.43 8.69
B .165 .175 4.19 4.45
C .218 .222 5.54 5.64
D .234 .246 5.94 6.25
E --- 5° --- 5° Nom
A
B
C
D
E
Average Forward Rectified Current - Amperes versus
Ambient Temperature - °C
Figure 2
Forward Derating Curve
0 175
50 75 100 125
0
5
10
15
Single Phase, Half Wave
60Hz Resis tive or Inductive Load
Amps
°C
150
20
25
30
Instantaneous Forward Current - Am peres versus
Instantaneous Forward Voltage - Volts
Figure 1
Typical Forward Characteristics
40
60
20
0
100
Amps
.4 .6 .8 1.0 1.2 1.4
.1
.2
.4
.6
1
2
4
6
10
20 25°C
Volts
1 100
4
0
100
200
300
8
Figure 4
Peak Forward Surge Current
Peak Forward Su rge Current - Am peres versus
Number Of Cycles At 60Hz - Cycles
Amps
C
y
cles
2
6
10 20 60 80
40
400
500
600
Juncti on Capacitance - pF versus
Reverse Voltage - Volts
Figure 3
Juncti on Capacitance
.1 .2 1 .4 2 10 20 40 4 100 200
1
2
6
10
20
100
pF
Volts
60
40
4
400 1000
TJ=25°C
SRA251 thru SRA257
