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: -55°C to +150°C
• Storage Temperature: -55°C to +150°C
• Typical Thermal Resistance (R
θJA
) 35°C/W
MCC
Catalog
Number
Device
Marking 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 Characteristics @ 25°C Unless 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
D1.000 --- 25.40 ---
A
B
D
D
C
Cathode Mark
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MCC
RL251 thru RL257
Average Forward Rectified Current - Amperes versus
Ambient Temperature - °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
Junction Capacitance - pF versus
Reverse Voltage - Volts
Instantaneous Forward Current - Amperes versus
Instantaneous Forward Voltage - Volts
Figure 1
Typical Forward Characteristics
4
6
20
10
Amps
.2 .4 .6 .8 1.0 1.2
.01
.02
.04
.06
.1
.2
.4
.6
1
225°C
Volts
Figure 3
Junction 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
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MCC
RL251 thru RL257
Figure 4
Typical Reverse Characteristics
Volts
.4
.6
2
1
Amps
20 120
40 60 80 100
.001
.002
.00
4
.006
.01
.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
2
6
10 20 60 80
40
120
150
180
Instantaneous Reverse Current - Amps versus
Percent Of Rated Peak Reverse Voltage - Volts
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