LESHAN RADIO COMPANY, LTD.
BB1351/2
UHF Variable Capacitance
Diode
SOD 323
1
2
BB135
P5
MARKING DIAGRAM
2
ANODE
1
CATHODE
FEATURES
Excellent linearity
Very small plastic SMD package.
C28: 1.9 pF; ratio: 10
Low series resistance.
APPLICATIONS
Electronic tuning in UHF television
tuners.
Radio upconversion concepts
VCO.
DESCRIPTION
The BB135 is a variable capacitance
diode, fabricated in planar technology,
and encapsulated in the SOD323 very
small plastic SMD package.
The matched type, BB134 has the
same specification.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
R
continuous reverse voltage
30
V
I
F
continuous forward current
20
mA
T
stg
storage temperature
55
+150
C
T
j
operating junction temperature
55
+125
C
ELECTRICAL CHARACTERISTICS
T
j
= 25 C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX. UNIT
I
R
reverse current
V
R
= 30 V; see Fig.2
10
nA
V
R
= 30 V; T
j
= 85 C; see Fig.2
200
nA
r
s
diode series resistance
f = 470 MHz; note 1
0.75
C
d
diode capacitance
V
R
= 0.5 V; f = 1 MHz; see Figs 1 and 3
17.5
21
pF
V
R
= 28 V;f = 1 MHz; see Figs 1 and 3
1.7
2.1
pF
C
d( 0.5V )
capacitance ratio
f = 1 MHz
8.9
12
C
d (28V )
Note
1. V
R
is the value at which C
d
= 9 pF.
LESHAN RADIO COMPANY, LTD.
BB1352/2
BB135
Fig.1 Diode capacitance as a function of reverse voltage; typical values.
Fig.2 Reverse current as a function of junction
temperature; maximum values.
Fig.3 Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.
T
j
C.
V
R
(V).
f = 1 MHz; T
j
= 25 C
.
T
j
= 0 to 85 C
.
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