LESHAN RADIO COMPANY, LTD.
UHF variable capacitance diode
FEATURES
路 Excellent linearity
路 Excellent matching to 2% DMA
路 Ultra small plastic SMD package
路 C28: 2.1 pF; ratio: 9
路 Low series resistance.
APPLICATIONS
路 Electronic tuning in UHF television tuners
路 Voltage controlled oscillators
DESCRIPTION
The BB179 is a planar technology variable capacitance diode, in a SOD523 (SC-79)
package. The excellent matching performance is achieved by gliding matching and a
direct matching assembly procedure.
BB 179
1
2
SOD523 SC-79
MARKING CODE:9
1
CATHODE
2
ANODE
9
MAX.
30
35
20
+150
+125
UNIT
V
V
mA
擄C
擄C
MAX.
鈥?/div>
鈥?/div>
0.6
鈥?/div>
鈥?/div>
1.27
鈥?/div>
1.05
鈥?/div>
TYP.
10
200
0.75
21.26
2.225
鈥?/div>
10.9
鈥?/div>
2
%
nA
鈩?/div>
pF
pF
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 = 470 MHz;
V
R
is the value at which Cd =9 pF
V
R
= 1 V; f = 1 MHz; see Figs 1and 3
V
R
= 28 V; f = 1 MHz; see Figs 1and 3
capacitance ratio
capacitance ratio
capacitance ratio
capacitance matching
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>
BB179 產(chǎn)品屬性
21.26pF
20mA
35V
-55°C 到 +125°C
SOD-323
2
No SVHC (18-Jun-2012)
0.75ohm
可變電容
30V
30V
10nA
9
SOD-323
SC-76
20mA
1V
28V
30V
30V
2.25pF
2.1pF
21.26pF
8.45
9
表面安裝
Band denotes cathode
BB179相關(guān)型號(hào)PDF文件下載
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