ER491

ER490 / ER491 Features Low Turn-on Voltage Fast Switching PN Junction Guard Ring for Transient a nd ESD Protection www.DataSheet4U.com CURRENT 1.0 Ampere VOLTAGE 20 to 40 Volts A L S 2 3 Top View 1 D G C H 3 2 1 K J B SC-59 Dim A B C D G H J K L S Min 2.70 1.30 1.00 0.35 1.70 0.00 0.10 0.20 1.25 2.25 Max 3.10 1.70 1.30 0.50 2.30 0.10 0.26 0.60 1.65 3.00 Mechanical Data Case: Molded Plastic Terminals: Solderable per MIL-STD-202, Method 208 Polarity: See Diagrams Below Weight: 0.008 grams (approx.) Mounting Position: Any All Dim ension in mm 3 CATHODE 2 ANODE 3 CATHODE 2 ANODE ER491 Marking : 10T ER490 Marking : 10F Maximum Ratings and Electrical Characteristics Type Number ER491 Rating at 25oC ambient temperature unless otherwise specified Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% ER490 Units Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current Peak Forward Surge Current, 8.3 ms SingleHalf Sine-wave Superimposed on Rated Loadmethod (JEDEC) Maximum lnstantaneous Forward Voltage At 1.0A Maximum D.C. Reverse Current @ TA=25oC At Rated DC Blocking Voltage @ TA=100oC Operating Junction Temperature Range TJ Storage Temperature Range TSTG 20 14 20 1.0 5.00 0.45 0.1 4.0 -25+125 -50+125 40 28 40 v v v A A 0.53 V mA mA o C o C RATINGS AND CHARACTERISTIC CURVES ER490 / ER491 FIG.1-TYPICAL FORWARDCHARACTERISTICS AVERAGE FORWARD CURRE...