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| LESHAN RADIO COMPANY, LTD. VHF Variable Capacitance Diode FEATURES * Excellent linearity * Excellent matching to 0.7% DMA * Very small plastic SMD package * C28: 2.5 pF; ratio: 16. * Low series resistance. APPLICATIONS * Electronic tuning in VHF television tuners, band B up to 460 MHz * VCO. DESCRIPTION The BB133T1 is a variable capacitance diode fabricated in planar technology, and encapsulated in the SOD323 very small plastic SMD package. The excellent matching performance is achieved by gliding matching and a direct matching assembly procedure. The unmatched type, BB150 has the same specification. 1 BB133T1 2 SOD- 323 MARKING DIAGRAM P3 1 CATHODE 2 ANODE LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. continuous reverse voltage - 30 VR IF continuous forward current - 20 Tstg storage temperature -55 +150 Tj operating junction temperature -55 +125 UNIT V mA C C ELECTRICAL CHARACTERISTICS Tj = 25 C unless otherwise specified. SYMBOL IR rs Cd Cd( 0.5V ) Cd (28V ) capacitance matching Cd Cd Note 1. VR is the value at which Cd = 30 pF. VR = 0.5 to 28 V; in a sequence of 4 diodes (gliding) VR= 0.5 to 28 V; in a sequence of 15 diodes (gliding) - 2 % - 0.7 % PARAMETER reverse current diode series resistance diode capacitance capacitance ratio CONDITIONS VR = 30 V; see Fig.2 VR = 30 V; Tj = 85 C; see Fig.2 f = 100 MHz; note 1 VR = 0.5 V; f = 1 MHz; see Figs 1 and 3 VR = 28 V;f = 1 MHz; see Figs 1 and 3 f = 1 MHz MIN. - - - 38 2.2 14 MAX. UNIT 10 200 0.9 46 2.6 21 nA nA pF pF BB133T1-1/2 LESHAN RADIO COMPANY, LTD. BB133T1 f = 1 MHz; Tj = 25 C. Fig.1 Diode capacitance as a function of reverse voltage; typical values. Tj = 0 to 85 C. Tj C. VR (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. BB133T1-2/2 |
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