DISCRETE SEMICONDUCTORS
lfpage
M3D049
BB148
VHF variable capacitance diode
Product specification |
1996 May 03 |
Supersedes data of December 1994
File under Discrete Semiconductors, SC01
Philips Semiconductors |
Product specification |
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VHF variable capacitance diode |
BB148 |
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FEATURES
∙Excellent linearity
∙Excellent matching to 1% DMA
∙Very small plastic SMD package
∙C28: 2.6 pF; ratio: 15
∙Low series resistance.
APPLICATIONS
∙Electronic tuning in VHF television tuners, band B up to 460 MHz
∙VCO.
DESCRIPTION
handbook, 4 columns |
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MAM130 |
Marking code: P8.
Cathode side indicated by a yellow bar.
Fig.1 Simplified outline (SOD323) and symbol.
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.
ELECTRICAL CHARACTERISTICS
Tj = 25 °C; unless otherwise specified.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL |
PARAMETER |
MIN. |
MAX. |
UNIT |
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VR |
continuous reverse voltage |
− |
30 |
V |
IF |
continuous forward current |
− |
20 |
mA |
Tstg |
storage temperature |
−55 |
+150 |
°C |
Tj |
operating junction temperature |
−55 |
+125 |
°C |
SYMBO |
PARAMETER |
CONDITIONS |
MIN. |
TYP. |
MAX. |
UNIT |
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L |
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IR |
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reverse current |
VR = 30 V; see Fig.3 |
− |
− |
10 |
nA |
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VR = 30 V; Tj = 85 °C; see Fig.3 |
− |
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200 |
nA |
rs |
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diode series resistance |
f = 100 MHz; note 1 |
− |
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0.9 |
Ω |
Cd |
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diode capacitance |
VR = 1 V; f = 1 MHz; see Figs 2 and 4 |
36.8 |
− |
41.8 |
pF |
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VR = 28 V; f = 1 MHz; see Figs 2 and 4 |
2.4 |
− |
2.75 |
pF |
Cd (1V) |
capacitance ratio |
f = 1 MHz |
14.5 |
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Cd ( 28V) |
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Cd |
capacitance matching |
VR = 0.5 to 28 V; in a sequence of 4 diodes (gliding) |
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1 |
% |
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VR = 0.5 to 28 V; in a sequence of 20 diodes (gliding) |
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2 |
% |
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C |
d |
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Note
1. VR is the value at which Cd = 12 pF.
1996 May 03 |
2 |
Philips Semiconductors |
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Product specification |
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VHF variable capacitance diode |
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BB148 |
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GRAPHICAL DATA |
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handbook, full |
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(pF) |
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10 2 |
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10 |
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1 |
10 |
VR |
(V) |
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f = 1 MHz; Tj = 25 °C. |
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Fig.2 Diode capacitance as a function of reverse voltage; typical values.
MLC816
103 handbook, halfpage
IR (nA)
102
10
0 |
50 |
100 |
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Tj |
(oC) |
Fig.3 Reverse current as a function of junction temperature; maximum values.
MLC815
10 3 handbook, halfpage
TC d (K−1)
10 4
10 5 |
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102 |
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10 1 |
1 |
10 |
VR (V) |
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Tj = 0 to 85 °C.
Fig.4 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values.
1996 May 03 |
3 |
Philips Semiconductors |
Product specification |
|
|
VHF variable capacitance diode |
BB148 |
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PACKAGE OUTLINE |
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handbook, full pagewidth
1.00
max 0.25 0.10
1.35 0.40
1.15 0.25
0.55
0.40
0.05 
max 
MBC672 - 1
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A |
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1.8 |
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1.6 |
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2.7 |
0.2 |
M |
A |
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2.3 |
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Dimensions in mm.
The (yellow) marking bar indicates the cathode.
Fig.5 SOD323.
DEFINITIONS
Data sheet status
Objective specification |
This data sheet contains target or goal specifications for product development. |
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Preliminary specification |
This data sheet contains preliminary data; supplementary data may be published later. |
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Product specification |
This data sheet contains final product specifications. |
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Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.
1996 May 03 |
4 |