BZX79B18

BZX79B SILICON PLANAR ZENER DIODES Features • Tolerance ± 2% Max. 0.5 Min. 27.5 Max. 1.9 Black Cathode Band Black Part No. Black "ST" Brand XXX ST Max. 3.9 Min. 27.5 Glass Case DO-35 Dimensions in mm Absolute Maximum Ratings (Ta = 25 OC) Parameter Continuous Forward Current Power Dissipation Thermal Resistance Junction to Ambient Air Junction Temperature Storage Temperature Range 1) Symbol IF Ptot RθJA Tj TS Value 250 500 0.3 1) 1) O Unit mA mW C/mW O - 65 to + 200 - 65 to + 200 C C O Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. Characteristics at Ta = 25 OC Parameter Forward Voltage at IF = 100 mA Symbol VF Max. 1.5 Unit V SEMTECH ELECTRONICS LTD. ® (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2007 BZX79B Characteristics at Ta = 25 OC Type Min. Zener Voltage 1), 3) Max. lZT (mA) Maximum Zener Impedance 2) ZZT (Ω) at IZT Maximum Leakage Current IR (µA) at VR (V) BZX79B2V7 2.64 2.76 5 100 75 1 BZX79B3V0 2.94 3.06 5 95 50 1 BZX79B3V3 3.23 3.37 5 95 25 1 BZX79B3V6 3.52 3.68 5 90 15 1 BZX79B3V9 3.82 3.98 5 90 10 1 BZX79B4V3 4.21 4.39 5 90 5 1 BZX79B4V7 4.6 4.8 5 80 3 2 BZX79B5V1 4.99 5.21 5 60 2 2 BZX79B5V6 5.48 5.72 5 40 1 2 BZX79B6V2 6.07 6.33 5 10 3 4 BZX79B6V8 6.66 6.94 5 15 2 4 BZX79B7V5 7.35 7.65 5 15 1 5 BZX79B8V2 8.03 8.37 5 15 0.7 5 BZX79B9V1 8.91 9.29 5 15 0.5 6 BZX79B10 9.8 10.2 5 20 0.2 7 BZX79B11 10.78 11.22 5 20 0.1 8 BZX79B12 11.76 12.24 5 25 0.1 8 BZX79B13 12.74 13.26 5 30 0.1 8 BZX79B15 14.7 15.3 5 30 0.05 10.5 BZX79B16 15.68 16.32 5 40 0.05 11.2 BZX79B18 17.64 18.36 5 45 0.05 12.6 BZX79B20 19.60 20.4 5 55 0.05 14 BZX79B22 21.56 22.44 5 55 0.05 15.4 BZX79B24 23.52 24.48 5 70 0.05 16.8 BZX79B27 26.46 27.54 2 80 0.05 18.9 BZX79B30 29.4 30.6 2 80 0.05 21 BZX79B33 32.34 33.66 2 80 0.05 23.1 BZX79B36 35.28 36.72 2 90 0.05 25.2 BZX79B39 38.22 39.78 2 130 0.05 27.3 BZX79B43 42.14 43.86 2 150 0.05 30.1 BZX79B47 46.06 47.94 2 170 0.05 32.9 BZX79B51 49.98 52.02 2 180 0.05 35.7 BZX79B56 54.88 57.12 2 200 0.05 39.2 BZX79B62 60.76 63.24 2 215 0.05 43.4 BZX79B68 66.64 69.36 2 240 0.05 47.6 BZX79B75 73.5 76.5 2 255 0.05 52.5 BZX79B82 80.36 83.64 2 280 0.1 62 BZX79B91 89.18 92.82 2 300 0.1 69 BZX79B100 98 102 1 500 0.1 76 BZX79B110 107.8 112.2 1 650 0.1 84 BZX79B120 117.6 122.4 1 800 0.1 91 BZX79B130 127.4 132.6 1 950 0.1 99 BZX79B150 147 153 1 1250 0.1 114 BZX79B160 156.8 163.2 1 1400 0.1 122 BZX79B180 176.4 183.6 1 1700 0.1 137 BZX79B200 196 204 1 2000 0.1 152 1) Zener voltage is measured under pulse conditions such that TJ is no more than 2 OC above Ta 2) ZZT is measured by dividing the ac voltage drop across the device by the ac current applied. The specified limits are for IZ (ac) = 0.1IZ (dc) with the ac frequency = 1 KHz 3) Tested with pulses tp = 20 ms. SEMTECH ELECTRONICS LTD. ® (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2007