Philips BB181
The BB181 is a variable capacitance diode, fabricated in planar technology and encapsulated in the SOD523 (SC-79) ultra small plastic SMD package.FEATURES
● Excellent linearity● Ultra small plastic SMD package
● C28: 1 pF; ratio: 14.
APPLICATIONS
● Electronic tuning in satellite tuners● Tuneable coupling
● Voltage controlled oscillators (VCO). PINNING PIN 1 2
DESCRIPTION
cathode anodeDESCRIPTION
MIN. − − −55 −55 MIN. − − − 8 0.7 12 BB181 handbook, 1 2 columns 2 N MBK441 Marking code: N. Orientation of marking code as shown. Cathode side indicated by a bar. Fig.1 Simplified outline (SOD523; SC-79) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VR IF Tstg TjELECTRICAL CHARACTERISTICS
Tj = 25 °C unless otherwise specified. SYMBOL IR rs Cd PARAMETER reverse current diode series resistance diode capacitance capacitance ratio CONDITIONS VR = 30 V; see Fig.3 VR = 30 V; Tj = 85 °C; see Fig.3 f = 470 MHz; note 1 VR = 0.5 V; f = 1 MHz; see Figs 2 and 4 VR = 28 V; f = 1 MHz; see Figs 2 and 4 C d ( 0.5V ) --------------------C d ( 28V ) Note 1. VR is the value at which Cd = 9 pF. f = 1 MHz MAX.