BB149 Datasheet, PDF (2/2 Pages) NXP Semiconductors – UHF variable capacitance diode

Product specification
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
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.
I_R
reverse current
V_R = 30 V; see Fig.3
−
V_R = 30 V; T_j = 85 °C; see Fig.3
−
r_s
diode series resistance f = 470 MHz; note 1
−
C_d
diode capacitance
V_R = 1 V; f = 1 MHz; see Figs 2 and 4
18
V_R = 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
∆_{--C--C---d--d-}
capacitance matching V_R = 0.5 to 28 V; in a sequence of 4 diodes (gliding) −
V_R = 0.5 to 28 V; in a sequence of 15 diodes
−
(gliding)
MAX.
10
200
0.75
19.5
2.25
10
−
1
2
UNIT
nA
nA
Ω
pF
pF
%
%
Note
1. V_R is the value at which C_d = 9 pF.
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