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| 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 25oC 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 TC=110oC 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 TA=25oC at rated DC blocking voltage TA=150 C Typical thermal resistance Operating and storage temperature o Dimensions in inches and millimeters Symbols VRRM VRMS VDC Io IFSM I2t VF IR RJC TJ,TSTG AR251 ARS251 100 70 100 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 A2S Volts uA o C/W o C Notes: 1.Enough heatsink must be considered in application. www. cnelectr .com AR251 THRU AR256 ARS251 THRU ARS256 Ratings and Characteristic Curves www. cnelectr .com |
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