1s2638
tuner afc diode
the 1s2638 is a variable capacitor diode
intended for afc applications, vhf tv
applications, fm receivers. air craft
communications gear, and other receivers
in the 1 mhz to 500 mhz.
standard package is do-35 case,
do-34 case is available upon request.
absolute maximum ratings (ta = 25 oc)
parameter symbol value unit
breakdown voltage bv 10 v
forward current if 250 ma
power dissipation pd 350 mw
operating temperature range topr - 65 to + 175 oc
storage temperature range tstg - 65 to + 200 oc
characteristics at ta = 25 oc
parameter symbol min. max. unit
reverse current
at vr = 10 v ir - 5 μa
nominal capacitance
at vr = 4 v, f = 1 mhz c 5 20 pf
at vr = 4 v, f = 100 mhz q 50 - -