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LESHAN RADIO COMPANY, LTD.
UHF Variable Capacitance Diode
FEATURES * Excellent linearity * Very small plastic SMD package. * C28: 1.9 pF; ratio: 10 * Low series resistance. APPLICATIONS * Electronic tuning in UHF television tuners. * Radio upconversion concepts * VCO. DESCRIPTION The BB135 is a variable capacitance diode, fabricated in planar technology, and encapsulated in the SOD323 very small plastic SMD package. The matched type, BB134 has the same specification.
1
BB135
2
SOD- 323
MARKING DIAGRAM
1 CATHODE
2 ANODE
P5
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. VR continuous reverse voltage - 30 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 ) Note 1. VR is the value at which Cd = 9 pF. 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 = 470 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. - - - 17.5 1.7 8.9 MAX. UNIT 10 200 0.75 21 2.1 12 nA nA pF pF
BB135-1/2
LESHAN RADIO COMPANY, LTD.
BB135
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.
BB135-2/2

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