618

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:
D High Capacitance Ratio: CR = 15.5 (Min)
D Guaranteed Figure of Merit: Q = 200 (Min) @ VR = 1V, f = 1MHz
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Reverse Voltage, VR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +100°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +100°C
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Breakdown Voltage
Reverse Current
Interterminal Capacitance
Symbol
V(BR)R
IR
Test Conditions
Min
Typ
Max
Unit
IR = 10μA
16
−
−
V
VR = 9V
−
−
100
nA
C1.2V
VR = 1.2V, f = 1MHz
420.0
−
459.1
pF
C3.5V
VR = 3.5V, f = 1MHz
144.2
−
192.1
pF
C6.0V
VR = 6.0V, f = 1MHz
45.71
−
60.91
pF
C8.0V
VR = 8.0V, f = 1MHz
20.30
−
23.54
pF
Figure of Merit
Q
VR = 1V, f = 1MHz
200
−
−
Capacitance Ratio
CR
C1.2V/C8.0V, f = 1MHz
15.5
−
−
matching Tolerance
ΔCm
−
−
0.03
(Cmax − Cmin)/Cmin
Rev. 3−12
.157 (4.0)
.118
(3.0)
.071
(1.8)
.590
(15.0)
A
K
.102 (2.6)
.090
(2.2)
.118 (3.0)