FEATURES
Tuner Diodes
MECHANICAL DATA
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 °C
ambient temperature unless otherwise specified
Case: SOD-323 Plastic Package
Weight: approx. 0.004 g
Dimensions in inches and (millimeters)
SOD-323
m
a
x.
.0
06
(
0
.15
)
min. .010 (0.25)
.012 (0.3)
.0
79
(
2
.0
)
.10
6
(
2
.7)
.059 (1.5)
m
a
x.
.
004 (
0
.
1
)
m
a
x.
.04
9
(
1
.25
)
Cathode Mark
Top View
.09
1
(
2
.3)
.
063
(1
.6)
.043 (1.1)
4/98
264
BB721S
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 varia-
tion for tuning the whole range of UHF tele-
vision bands.
Two BB721/BB721S tuner diodes in series
are used for direct satellite receivers.
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-123 case
with the type designation BB721.
ELECTRICAL CHARACTERISTICS
Ratings at 25 °C
ambient temperature unless otherwise specified
265
BB721S
Symbol
Min.
Typ.
Max.
Unit
Reverse Breakdown Voltage
at I
R
= 100
µ
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
1.9
17.5
2.3
20
pF
pF
Effective Capacitance Ratio, f = 1 MHz
at V
R
= 1 to 28 V
C
tot
(1 V)
C
tot
(28V)
8.2
9.8
Series Resistance
at f = 470 MHz, C
tot
= 14 pF
r
s
0.55
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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