21201 Itasca St.
Chatsworth, CA 91311
Phone: (818) 701-4933
Fax: (818) 701-4939
RL251
THRU
RL257
2.5 Amp
Silicon Rectifier
50 to 1000 Volts
Features
• Low Cost
• Low Leakage
• Low Forward Voltage Drop
• High Current Capability
Maximum Ratings
• Operating Temperature: -65°C to +175°C
• Storage Temperature: -65°C to +175°C
• Typical Thermal Resistance (RθJA) 35°C/W
Microsemi
Part Number
Maximum
Recurrent
Peak Reverse
Voltage
Maximum
RMS Voltage
Maximum DC
Blocking
Voltage
RL251 50V 35V 50V
RL252 100V 70V 100V
RL253 200V 140V 200V
RL254 400V 280V 400V
RL255 600V 420V 600V
RL256 800V 560V 800V
RL257 1000V 700V 1000V
Electrical Character istics @ 25 °C U nless Otherwise Specified
Average Forward
Current IF(AV) 2.5 A TA = 75°C
Peak Forward Surge
Current IFSM 150A 8.3ms, half sine
Maximum
Instantaneous
Forward Voltage VF1.0V IFM = 2.5A;
TA = 25°C
Maximum DC
Reverse Current At
Rated DC Blocking
Voltage
IR5.0µA
50µATA = 25°C
TA = 100°C
Typical Junction
Capacitance CJ35pF Measured at
1.0MHz, VR=4.0V
*Pulse Test: Pulse Width 300µsec, Duty Cycle 1%
R-3
DIMENSIONS
INCHES MM
DIM MIN MAX MIN MAX NOTE
A --- .160 --- 4.10
B --- .160 --- 4.10
C .040 .042 1.01 1.07
D 1.000 --- 25.40 ---
A
B
D
D
C
Cathode Mark
Average Forward Rectifi ed Current - Amperes versus
Ambi ent Temperat ure - °C
Figure 2
Forward Derating Curve
017550 75 100 125
0
.5
1.0
1.5
Single Phase, Half Wave
60Hz Resistive or Inductive Load
Amps
°C
150
2.0
2.5
3.0
Junct i on Capacitance - pF versus
Reverse Voltage - Volts
Instantaneous Forward Current - Amperes versus
Instantaneous Forward Voltage - Vol ts
Figure 1
Typical Forward Characteri stics
4
6
20
10
Amps
.1 .3 .5 .7 .9 1.1
.01
.02
.04
.06
.1
.2
.4
.6
1
225°C
Volts
Figure 3
Junct i on Capacitance
.1 .2 1.4 2 10 20 404 100 200
1
2
6
10
20
100
pF
Volts
60
40
4
400 1000
TJ=25°C
RL251 thru RL257
Figure 4
Typical Revers e Characteris tics
Volts
.4
.6
2
1
Amps
20 120
40 60 80 100
.001
.002
.00
4
.00
6
.0
1
.02
.04
.06
.1
.2
4
6
10
140
TJ=25°C
TJ=100°C
1 100
4
0
30
60
90
8
Figure 5
Peak Forward Surge Current
Peak Forward Surge Current - Amperes versus
Number Of Cycles At 60Hz - Cycles
Amps
Cycles
2610 20 60 80
40
120
150
180
Inst ant aneous Reverse Current - A mps versus
Percent Of Rated Peak Reverse Voltage - V ol ts
RL251 thru RL257