BB148 Datasheet, PDF (1/3 Pages) NXP Semiconductors – VHF variable capacitance diode

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VHF variable capacitance diode
BB148
FEATURES
• Excellent linearity
• Excellent matching to 1% DMA
• Very small plastic SMD package
handbook, 4 columns
k
a
• C28: 2.6 pF; ratio: 15
• Low series resistance.
APPLICATIONS
• Electronic tuning in VHF television
tuners, band B up to 460 MHz
• VCO.
DESCRIPTION
The BB148 is 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 diodes are delivered on tape in
several matched groups and are also
available unmatched upon request.
The unmatched type, BB158 has the
same specification.
MAM130
Marking code: P8.
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. MAX. UNIT
I_R
r_s
C_d
C--C---_d^-d---₍^-(-₂^-1-₈^--V-_V^--)-₎^-
reverse current
V_R = 30 V; see Fig.3
V_R = 30 V; T_j = 85 °C; see Fig.3
diode series resistance f = 100 MHz; note 1
diode capacitance
V_R = 1 V; f = 1 MHz; see Figs 2 and 4
capacitance ratio
V_R = 28 V; f = 1 MHz; see Figs 2 and 4
f = 1 MHz
−
10
nA
−
200 nA
−
0.9
Ω
36.8 41.8 pF
2.4 2.75 pF
14.5 −
∆_{--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 20 diodes (gliding) −
1
2
%
%
Note
1. V_R is the value at which C_d = 12 pF.
OLITECH ELECTRONICS CO. LTD.
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