BB814... Silicon Variable Capacitance Diodes For FM radio tuners with extended frequency band High tuning ratio at low supply voltage (car radio) Monolithic chip (common cathode) for perfect dual diode tracking Coded capacitance groups and group matching available Pb-free (RoHS compliant) package BB814 Type Package Configuration L (nH) Marking S BB814 SOT23 common cathode 1.8 SH1/2* *For differences see next page Capacitance groups Maximum Ratings at T = 25C, unless otherwise specified A Parameter Symbol Value Unit 18 V Diode reverse voltage V R 20 Peak reverse voltage- V RM 50 mA Forward current I F C Operating temperature range T -55 ... 125 op Storage temperature T -55 ... 150 stg 2011-06-15 1BB814... Electrical Characteristics at T = 25C, unless otherwise specified A Parameter Symbol Values Unit min. typ. max. DC Characteristics Reverse current I nA R V = 16 V - - 20 R V = 16 V, T = 60 C - - 200 R A AC Characteristics 1) pF Diode capacitance C T V = 2 V, f = 1 MHz 43 44.75 46.5 R V = 8 V, f = 1 MHz 19.1 20.8 22.7 R 2.05 2.15 2.25 Capacitance ratio C /C T2 T8 V = 2 V, V = 8 V, f = 1 MHz R R 2) - - 3 Capacitance matching C /C % T T V = 2 V, V = 8 V, f = 1 MHz R R Series resistance r - 0.18 - S V = 2 V, f = 100 MHz R Q factor Q - 200 - f = 100 MHz, V = 2 V R 1 Capacitance groups at 2V and 8V, coded 1 2 C /groups 1 2 T C min 43pF 44.5pF 2V C max 45pF 46.5pF 2V C min 19.1pF 19.75pF 8V C max 21.95pF 22.7pF 8V 2 For details please refer to Application Note 047. 2011-06-15 2