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