NTE618 Varactor Silicon Tuning Diode for AM Radio Description The NTE618 is a silicon varactor diode with a good linearity and high capacitance ratio that is capable of being operated from a low voltage. This device is intended for use in AM receiver electronic tuning applications. Features: High Capacitance Ratio: C = 15.5 (Min) R Guaranteed Figure of Merit: Q = 200 (Min) V = 1V, f = 1MHz R Absolute Maximum Ratings: (T = +25C unless otherwise specified) A Reverse Voltage, V ................................................................ 16V R Operating Junction Temperature, T ............................................... +100C J Storage Temperature Range, T .......................................... 55 to +100C stg Electrical Characteristics: (T = +25C unless otherwise specified) A Parameter Symbol Test Conditions Min Typ Max Unit Breakdown Voltage V I = 10A 16 V (BR)R R Reverse Current I V = 9V 100 nA R R Interterminal Capacitance C V = 1.2V, f = 1MHz 420.0 459.1 pF 1.2V R C V = 3.5V, f = 1MHz 144.2 192.1 pF 3.5V R C V = 6.0V, f = 1MHz 45.71 60.91 pF 6.0V R C V = 8.0V, f = 1MHz 20.30 23.54 pF 8.0V R Figure of Merit Q V = 1V, f = 1MHz 200 R Capacitance Ratio C C /C , f = 1MHz 15.5 R 1.2V 8.0V matching Tolerance C (C C )/C 0.03 m max min min Rev. 312.157 (4.0) .118 (3.0) .071 (1.8) .590 (15.0) AK .102 (2.6) .090 (2.2) .118 (3.0)