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PDF BB179B Data sheet ( Hoja de datos )
| Número de pieza | BB179B | |
| Descripción | UHF variable capacitance diode | |
| Fabricantes | Leshan Radio Company | |
| Logotipo |  |
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LESHAN RADIO COMPANY, LTD.
UHF variable capacitance diode
FEATURES
· Excellent linearity
· Excellent matching to 2% DMA
· Ultra small plastic SMD package
· C28: 2.1 pF; ratio: 9
· Low series resistance.
APPLICATIONS
· Electronic tuning in UHF television tuners
· Voltage controlled oscillators
DESCRIPTION
The BB179B 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.
1
CATHODE
2
ANODE
BB 179B
1
2
SOD523 SC-79
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
V R continuous reverse voltage
V RM
peak reverse voltage
in series with a 10 kΩ resistor
I F continuous forward current
T stg storage temperature
T j operating junction temperature
MIN.
–
–
–
–55
–55
MAX.
32
35
20
+150
+125
UNIT
V
V
mA
°C
°C
ELECTRICAL CHARACTERISTICS T j =25°C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
IR
rs
Cd
C d(1V)
C d(2V)
C d(1V)
C d(28V)
C d(25V)
C d(28V)
∆C d
Cd
reverse current
diode series resistance
diode capacitance
capacitance ratio
V R = 30 V; see Fig.2
V R = 30 V; T j =85°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
f = 1 MHz
capacitance ratio
f = 1 MHz
capacitance ratio
f = 1 MHz
capacitance matching V R = 1 to 28 V; in a sequence of 15
diodes(gliding)
MIN.
–
–
–
MAX.
–
–
0.6
TYP.
10
200
0.75
18.22
–
20
1.9 – 2.25
– 1.27 –
8.45 – 10
– 1.05 –
– –2
UNIT
nA
nA
Ω
pF
pF
%
BB179B–1/2
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet BB179B.PDF ] | |
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