General Semiconductor BB721 Datasheet
BB721
Tuner Diodes
SOD-123
.022 (0.55)
Cathode Mark
.100 (2.55)
.112 (2.85)
.140 (3.55)
.152 (3.85)
.067 (1.70)
.055 (1.40)
Dimensions in inches and (millimeters)
Top View
max. .004 (0.1)
max. .053 (1.35)
min. .010 (0.25)
FEATURES
Silicon epitaxial planar capacitance diodes with
♦
very wide effective capacitance variation for tuning
the whole range of UHF television 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-323 case
♦
with the type designation BB721S.
max. .006 (0.15)
Case:
Weight:
MECHANICAL DATA
SOD-123 Plastic Case
approx. 0.01 g
Ratings at
Reverse Voltage V
Ambient Temperature T
Storage Temperature Range T
ambient temperature unless otherwise specified
25 °C
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Symbol Value Unit
R
amb
S
32 V
125 °C
–55 to +125 °C
4/98
260
BB721
Ratings at
Reverse Breakdown Voltage
at I
Leakage Current
at VR = 30 V
Capacitance f = 1 MHz
at VR = 28 V
at VR = 1 V
Effective Capacitance Ratio, f = 1 MHz
at VR = 1 to 28 V
Series Resistance
at f = 470 MHz, C
Series Inductance L
For any two of six consecutive diodes in the carrier tape, the maximum capacitance deviation in the reverse
bias voltage of V
ambient temperature unless otherwise specified
25 °C
= 100 µA
R
= 14 pF
tot
= 0.5 to 28 V is max. 2.5%.
R
Symbol Min. Typ. Max. Unit
V
I
C
C
C
C
r
(BR)R
R
tot
tot
tot
tot
s
s
(1 V)
(28V)
32 – – V
––10nA
1.9
17.5
–
–
2.3
20
8.2– 9.8–
–0.55–
–2.5–nH
ELECTRICAL CHARACTERISTIC S
pF
pF
Ω
261
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