Datasheet

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 beinf operated from a low voltage. This device is intended for use in AM receiver electronic tuning
applications.
Features:
D High Capacitance Ratio: C
R
= 15.5 (Min)
D Guaranteed Figure of Merit: Q = 200 (Min) @ V
R
= 1V, f = 1MHz
Absolute Maximum Ratings: (T
A
= +25°C unless otherwise specified)
Reverse Voltage, V
R
16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature, T
J
+100°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
–55° to +100°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Breakdown Voltage V
(BR)R
I
R
= 10µA 16 – – V
Reverse Current I
R
V
R
= 9V – – 100 nA
Interterminal Capacitance C
1.2V
V
R
= 1.2V, f = 1MHz 420.0 – 459.1 pF
C
3.5V
V
R
= 3.5V, f = 1MHz 144.2 – 192.1 pF
C
6.0V
V
R
= 6.0V, f = 1MHz 45.71 – 60.91 pF
C
8.0V
V
R
= 8.0V, f = 1MHz 20.30 – 23.54 pF
Figure of Merit Q V
R
= 1V, f = 1MHz 200 – –
Capacitance Ratio C
R
C
1.2V
/C
8.0V
, f = 1MHz 15.5 – –
matching Tolerance ∆C
m
(C
max
– C
min
)/C
min
– – 0.03