Tuner Diodes
FEATURES
MECHANICAL DATA
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C
ambient temperature unless otherwise specified
Dimensions in inches and (millimeters)
SOD-123
.022 (0.55)
m
a
x.
.00
4
(
0
.1)
.1
12
(
2
.8
5)
.1
52
(
3
.8
5)
.067 (1.70)
m
a
x. .0
53
(
1
.3
5)
min. .010 (0.25)
Cathode Mark
m
a
x
.
.
006
(
0
.1
5)
Top View
.1
40
(
3
.5
5)
.1
00
(
2
.5
5)
.055 (1.40)
Case: SOD-123 Plastic Case
Weight: approx. 0.01 g
4/98
274
BB731
Symbol
Value
Unit
Reverse Voltage
V
R
32
V
Ambient Temperature
T
amb
125
C
Storage Temperature Range
T
S
55 to +125
C
Silicon epitaxial planar capacitance diodes with very wide
effective capacitance variation for tuning
the VHF range 41 ... 170 MHz in hyper-
band television tuners.
These diodes are available as singles or as
matched sets of two or more units according to the
tracking condition described in the table of characteristics.
This diode is also available in SOD-323 case
with the type designation BB731S.
ELECTRICAL CHARACTERISTICS
Ratings at 25 C
ambient temperature unless otherwise specified
275
BB731
Symbol
Min.
Typ.
Max.
Unit
Reverse Breakdown Voltage
at I
R
= 100
A
V
(BR)R
32
V
Leakage Current
at V
R
= 30 V
I
R
10
nA
Capacitance, f = 1 MHz
at V
R
= 28 V
at V
R
= 1 V
C
tot
C
tot
2.9
62.0
3.4
76.0
pF
pF
Effective Capacitance Ratio, f = 1 MHz
at V
R
= 1 to 28 V
C
tot
(1 V)
C
tot
(28V)
19.5
Series Resistance
at f = 300 MHz, C
tot
= 25 pF
r
s
1.0
Series Inductance
L
s
2.5
nH
For any two of six consecutive diodes in the carrier tape, the maximum capacitance deviation in the reverse
bias voltage of V
R
= 0.5 to 28 V is max. 2.5%
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