FASTORB - 25 & 35 Amp Avalanche AUTOMOTIVE RECTIFIERS FR2528 & 3528 Data Sheet Mechanical Dimensions Description Note: Ring Markings on Cathode FR2528 FR2500S .395 .337 FR2528S .337 Options - Add Suffix to Part #: FR2528L = 2 Leads; FR3528L = 2 Leads For 1 Lead Small Pkg: FR2528SC = Lead On Cathode FR2528SA = Lead On Anode Leads 1.00 typ. .05 Dia. .220 .241 .175 Features n INEXPENSIVE n AVALANCHE VOLTAGE 24 TO 32 VOLTS n GLASS PASSIVATED DIE Electrical Characteristics @ 25o C. Maximum Ratings Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage Repetitive Peak Reverse Surge Current FR2528 FR3528 Average Forward Rectified Current FR2528 FR3528 Non-Repetitive Peak Forward Surge Current Surge Supplied @ Rated Load Conditions, ½ Wave, Single Phase FR2528 FR3528 Thermal Resistance, Junction to Lead Both Equal Length Leads to Heat Sink RθJL Thermal Resistance, Junction to Case RθJC Replaces MR2535 & MR3525 Units Volts Volts Volts Amps Amps Amps Amps Amps 600 800 Amps Amps Length Max. Units IRRM (EXP) ¼" ¾" 8 ½" 7.5 10 13 °C / W °C / W °C / W IRRM (EXP) .8 Typ Instantaneous Forward Voltage (IF = 100 Amps, TC = 25°C)...VF Instantaneous Reverse Current (VR = 20 VDC, TC = 25°C)...IR Breakdown Voltage (IR = 100 mAmps, TC = 25°C)...VBR Clamping Voltage (IR = 90 Amps, TC = 150°C, PW = 80 µS)...VBR Breakdown Voltage Temperature Coefficient...V(br) TC Forward Voltage Temperature Coefficient...(IF = 10 mA) VF(tc) Page 2-20 FR2528 & 3528 Symbol Value VRRM 20 VRWM 20 VDC 20 IRSM 110 150 IO 25 35 IFSM 250 °C / W Fig. 1 Fig. 1 0 10 30 50 Surge Current Characteristics Min. N/A N/A 24 N/A N/A N/A Max. 1.10 1.0 32 40 0.096 2 Units Volts µAmps Volts Volts % / °C mV / °C