1S2638 TUNER AFC DIODE The 1S2638 is a variable capacitor diode intended for AFC applications, VHF TV applications, FM receivers. Air craft Max. 0.5 Max. 0.45 communications gear, and other receivers Min. 27.5 Min. 27.5 Max. 1.9 Max. 1.9 in the 1 MHz to 500 MHz. Black Cathode Band Black Part No. Black "ST" Brand Black Cathode Band XXX Black Part No. Max. 3.9 ST XXX Max. 2.9 Standard package is DO-35 case, DO-34 case is available upon request. Min. 27.5 Min. 27.5 Glass Case DO-34 Dimensions in mm Glass Case DO-35 Dimensions in mm Absolute Maximum Ratings (Ta = 25 OC) Parameter Symbol Value Unit BV 10 V Forward Current IF 250 mA Power Dissipation PD 350 mW Operating Temperature Range Topr - 65 to + 175 O Storage Temperature Range Tstg - 65 to + 200 O Breakdown Voltage C C Characteristics at Ta = 25 OC Parameter Symbol Min. Max. Unit Reverse Current at VR = 10 V IR - 5 µA Nominal Capacitance at VR = 4 V, f = 1 MHz C 5 20 pF Q 50 - - at VR = 4 V, f = 100 MHz SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 20/06/2007 1S2638 SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 20/06/2007