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BB149_15 Datasheet, PDF (2/8 Pages) Quanzhou Jinmei Electronic Co.,Ltd. – UHF variable capacitance diode | |||
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Philips Semiconductors
UHF variable capacitance diode
Product speciï¬cation
BB149
FEATURES
⢠Excellent linearity
⢠Excellent matching to 1% DMA
⢠Very small plastic SMD package
⢠C28: 2.1 pF; ratio 9
⢠Low series resistance.
APPLICATIONS
⢠Electronic tuning in UHF television
tuners
⢠VCO.
DESCRIPTION
The BB149 is a variable capacitance
diode, fabricated in planar
technology, and encapsulated in the
SOD323 very small plastic SMD
package.
The excellent matching performance
is achieved by gliding matching and a
direct matching assembly procedure.
The unmatched type, BB159 has the
same specification.
handbook, 4 columns
k
a
MAM130
Marking code: P9.
Cathode side indicated by a bar.
Fig.1 Simplified outline (SOD323) and symbol.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
MIN. MAX. UNIT
VR
continuous reverse voltage
â
30
V
IF
continuous forward current
â
20
mA
Tstg
storage temperature
â55
+150 °C
Tj
operating junction temperature
â55
+125 °C
ELECTRICAL CHARACTERISTICS
Tj = 25 °C unless otherwise speciï¬ed.
SYMBOL
PARAMETER
CONDITIONS
MIN.
IR
reverse current
VR = 30 V; see Fig.3
â
VR = 30 V; Tj = 85 °C; see Fig.3
â
rs
diode series resistance f = 470 MHz; note 1
â
Cd
diode capacitance
VR = 1 V; f = 1 MHz; see Figs 2 and 4
18
VR = 28 V; f = 1 MHz; see Figs 2 and 4
1.9
C--C---d-d---(-(-2-1-8--V-V--)-)-
capacitance ratio
f = 1 MHz
8.2
CC-----dd----((--12--98---VV---))-
capacitance ratio
f = 1 MHz
1.2
â--C--C---d--d-
capacitance matching VR = 0.5 to 28 V; in a sequence of 4 diodes (gliding) â
VR = 0.5 to 28 V; in a sequence of 15 diodes
â
(gliding)
MAX.
10
200
0.75
19.5
2.25
10
â
1
2
UNIT
nA
nA
â¦
pF
pF
%
%
Note
1. VR is the value at which Cd = 9 pF.
1998 Sep 15
2
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