Varactor Diodes for Radio Tuning
NTE Type
Number		 Application Reverse
Breakdown
Voltage
(Volts)		 Maximum
Forward
Current
(mA)		 Power
Dissipation
(mW)		 Minimum
Figure of
Merit		 Minimum Diode
Capacitance
(pF)		 Capacitance
Ratio
V(BR) IF PD Q CT CR
617 FM Tuning 32 200 280 100 @ 3V 34 @ 3V 2.5 Min
618 FM Tuning 18 50 280 150 @ 1V 440 @ 1V 15

Voltage Variable Capacitance Diodes
(Tuning Diodes)
NTE Type
Number		 Nominal Diode
Capacitance @
VR = 4V, f = 1MHz
(pF)		 Typical Tuning
ratio C2 / C30
@ f = 1MHz
(Volts)		 Maximum
Reverse
Breakdown
Voltage
(Volts)		 Maximum
Forward
Current
(mA)		 Maximum
Power
Dissipation
(Watts)		 Minimum
Figure of Merit @
VR = 4Vdc, f = 50MHz
CT TR V(BR) IF PD Q
610 6.8 2.7 30 200 280 450
611 10 2.9 30 200 280 400
612 12 2.9 30 200 280 400
613 22 2.9 30 200 280 350
614 33 3.0 30 200 280 200

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