Shanghai Lunsure Electronic
Technology Co.,LTD
Tel:0086-21-37185008
Fax:0086-21-57152769
AR251/ARS251
THRU
AR256/ARS256
BUTTON DIODES
VOLTAGE RANGE
100 TO 600 VOLTS
CURRENT 25AMPS
Features
Low leakage
Low forward voltage drop
High current capability
High forward surge current capability
.185(4.7)
.165(4.2)
AR
.185(4.7)
.165(4.2)
ARS
Mechanical Data
Case: transfer molded plastic
Technology: vcauum soldered
Polarity: color ring denotes cathode
Lead: Plated lead, solderable per MIL-STD-202E method 208C
Mounting position: Any
Weigth: AR 1.80 grams, ARS 1.60 grams
.250(6.4)
.235(6.0)
.250(6.4)
.235(6.0)
.410(10.4)
DIA
.380( 9.7)
.225(5.7)
DIA
.215(5.5)
.346(8.8)
DIA
.327(8.2)
.225(5.7)
DIA
.215(5.5)
Maximum Ratings and Electrical Charactristics
Rating at 25
o
C ambient temperature unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load
For capacitive load derate current by 20%
Parameters
Maximum repetitive peak reverse voltage
Maximum RM S voltage
Maximum DC blocking voltage
Maximum Average rectified forward current
at T
C
=110
o
C
Peak forward surge current 8.3mS single
half sine-wave superimposed on rated load
(JE DEC Method)
Rating for fusing(t<8.3ms)
Maximum instantaneous forward voltage
drop at 100A
Maximum DC reverse current T
A
=25
o
C
at rated DC blocking voltage T
A
=150
o
C
Typical thermal resistance
Operating and storage temperature
Symbols
V
RRM
V
RMS
V
DC
I
o
I
FSM
I
2
t
V
F
I
R
R
θJC
T
J
,T
STG
AR251
ARS251
100
70
100
Dimensions in inches and millimeters
AR252
ARS252
200
140
200
AR253
ARS253
300
210
300
25
400
664
1.1
5.0
450
1.0
-65 to +175
AR254
ARS254
400
280
400
AR256
ARS256
600
420
600
Units
Volts
Volts
Volts
Amps
Amps
A
2
S
Volts
uA
o
C/W
o
C
Notes: 1.Enough heatsink must be considered in application.
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