LESHAN RADIO COMPANY, LTD.
VHF variable capacitance diode
BB 178
FEATURES
路 Excellent linearity
路 Excellent matching to 2% DMA
路 Ultra small plastic SMD package
路 C 28: 2.6 pF; ratio: 15
路 Very low series resistance.
APPLICATIONS
路 Electronic tuning in VHF television
tuners, band B up to 460 MHz
路 Voltage controlled oscillators(VCO).
MARKING CODE:8
DESCRIPTION
The BB178 is a planar technology variable
capacitance diode, in a SOD523 (SC-79)
package. The excellent matching perfor-
mance is achieved by gliding matching and
a direct matching assembly procedure.
2
1
SOD523 SC-79
8
MAX.
32
35
20
+150
+125
UNIT
V
V
mA
擄C
擄C
MAX.
鈥?/div>
鈥?/div>
0.65
鈥?/div>
鈥?/div>
1.3
鈥?/div>
1.08
鈥?/div>
TYP.
10
200
0.8
42.35
2.754
鈥?/div>
鈥?/div>
鈥?/div>
2
%
nA
nA
鈩?/div>
pF
pF
1
CATHODE
2
ANODE
1
2
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
V
R
V
RM
I
F
T
stg
T
j
PARAMETER
continuous reverse voltage
peak reverse voltage
continuous forward current
storage temperature
operating junction temperature
CONDITIONS
in series with a 10 k鈩?resistor
MIN.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?5
鈥?5
ELECTRICAL CHARACTERISTICS
T
j
=25擄C unless otherwise specified.
SYMBOL
I
R
r
s
C
d
C
d(1V)
C
d(2V)
C
d(1V)
C
d(28V)
C
d(25V)
C
d(28V)
鈭咰
d
C
d
PARAMETER
reverse current
diode series resistance
diode capacitance
CONDITIONS
V
R
= 30 V; see Fig.2
V
R
= 30 V; T
j
=85擄C; see Fig.2
f = 100 MHz;
V
R
is the value at which Cd =30 pF
V
R
= 1 V; f = 1 MHz; see Figs 1and 3
V
R
= 28 V; f = 1 MHz; see Figs 1and 3
f = 1 MHz
f = 1 MHz
f = 1 MHz
V
R
= 1 to 28 V; in a sequence of 15
diodes(gliding)
MIN.
鈥?/div>
鈥?/div>
鈥?/div>
34.65
2.361
鈥?/div>
13.5
鈥?/div>
鈥?/div>
UNIT
capacitance ratio
capacitance ratio
capacitance ratio
capacitance matching
BB178鈥?/2
BB178相關(guān)型號PDF文件下載
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