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Silicon Variable Capacitance Diode
Preliminary Data
q q q q q
BB 304A
For FM tuners Monolithic chip with common cathode for perfect tracking of both diodes Uniform "square law" characteristics Ideal Hifi tuning device when used in Low-distortion back-to back configuration Color-coded capacitance subgroups available (see characteristics)
Type
Ordering Code (tape and reel) Q62702-B118
Pin Configuration 1 2 3 A1 C1/C2 A2
Marking
Package
BB 304A
color coded capacitance groups
TO-92
Maximum Ratings Parameter Reverse voltage Peak reverse voltage (R 10 ) Forward current TA 60 C Storage temperature range Thermal Resistance Junction-ambient Symbol Values 18 20 50 - 55 ... + 150 Unit V V mA C
VR VRM IF Tstg
Rth JA
K/W
Semiconductor Group
1
10.94
BB 304A
Electrical Characteristics at TA = 25 C, unless otherwise specified. Parameter Symbol min. DC Characteristics Reverse current VR = 16 V VR = 16 V, TA = 60 C Diode capacitance VR = 2 V, f = 1 MHz Capacitance ratio VR = 2 V ... 8V, f = 1 MHz Series resistance VR = 38 V, f = 100 MHz Q factor CT = 38 pF, f = 100 MHz Diode capacitance VR = 2 V, f = 1 MHz Subgroup: red yellow white green blue Value typ. max. Unit
IR
- - - - 20 200
nA
CT
42 - - 0.25 170 47.5
pF - 1.65 - 1.75 - 0.4 - 100 - pF 42 43 44 45 46 - - - - - 43.5 44.5 45.5 46.5 47.5
CT2/CT8 rS Q CT
Package Outline TO-92
Semiconductor Group
2
BB 304A
Diode capacitance CT = f (VR) per diode f = 1 MHz
Capacitance ratio CT/CTref = f (VR) per diode; Vref = 1 V, 2 V, f = 1 MHz
Temperature coefficient TCC = f (VR) per diode, f = 1 MHz
Semiconductor Group
3

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