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| LESHAN RADIO COMPANY, LTD. VHF variable capacitance diode FEATURES * High linearity * Excellent matching to 2% DMA * Ultra small plastic SMD package * C28: 2.7 pF; ratio: 22 * Low series resistance. APPLICATIONS * Electronic tuning in VHF television tuners, band A up to 160 MHz * Voltage controlled oscillators (VCO). DESCRIPTION The BB182 is a planar technology variable capacitance diode, in a SOD523 (SC-79) package. The excellent matching performance is achieved by gliding matching and a direct matching assembly procedure. 1 CATHODE 2 ANODE BB 182 1 2 SOD523 SC-79 MARKING CODE:2 2 MAX. 32 35 20 +150 +125 UNIT V V mA C C MAX. - - 1 - - 1.31 - 1.05 - TYP. 10 200 1.2 62 2.89 - - - 2 % nA pF pF 1 2 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VR V RM IF T stg Tj PARAMETER continuous reverse voltage peak reverse voltage continuous forward current storage temperature operating junction temperature CONDITIONS in series with a 10 k resistor MIN. - - - -55 -55 ELECTRICAL CHARACTERISTICS T j =25C unless otherwise specified. SYMBOL IR rs Cd C d(1V) C d(2V) C d(1V) C d(28V) C d(25V) C d(28V) C d Cd PARAMETER reverse current diode series resistance diode capacitance CONDITIONS V R = 30 V; see Fig.2 V R = 30 V; T j =85C; see Fig.2 f = 100 MHz; V R is the value at which Cd =30 pF V R = 1 V; f = 1 MHz; see Figs 1and 3 V R = 28 V; f = 1 MHz; see Figs 1and 3 capacitance ratio capacitance ratio capacitance ratio capacitance matching f = 1 MHz f = 1 MHz f = 1 MHz V R = 1 to 28 V; in a sequence of 15 diodes(gliding) MIN. - - - 52 2.48 - 20.6 - - UNIT nA BB182-1/2 LESHAN RADIO COMPANY, LTD. BB 182 80 70 60 C d ( pF ) 50 40 30 f = 1 MHz; T j =25C 20 10 0 10 -1 1 10 10 2 V R( V ) Fig.1 Diode capacitance as a function of reverse voltage; typical values. 10 3 10 -3 I R (nA) TC d ( K -1 ) 10 2 10 -4 T j = 0 to 85 C. 10 0 50 100 10 -5 10 -1 1 10 10 2 T j ( C ) V R( V ) Fig.2 Reverse current as a function of junction temperature; maximum values. Fig.3 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values. BB182-2/2 |
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