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DISCRETE SEMICONDUCTORS
DATA SHEET
alfpage
M3D049
BB158
VHF variable capacitance diode
Product specication
Supersedes data of May 1996
1999 Jun 10
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Philips Semiconductors
Product specication
VHF variable capacitance diode
BB158
FEATURES
·
Excellent linearity
·
Very small plastic SMD package
handbook, 4 columns
k
a
·
C28: 2.6 pF; ratio: 15
·
Low series resistance.
MAM130
APPLICATIONS
Marking code: PH.
Cathode side indicated by a bar.
·
Electronic tuning in VHF television
tuners, band B up to 460 MHz
Fig.1 Simplified outline (SOD323) and symbol.
·
VCO.
DESCRIPTION
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
The BB158 is variable capacitance
diode, fabricated in planar
technology, and encapsulated in the
SOD323 very small plastic SMD
package.
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V R
continuous reverse voltage
-
30
V
I F
continuous forward current
-
20
mA
The matched type, BB148 has the
same specification.
T stg
storage temperature
-
55
+150
°
C
T j
operating junction temperature
-
55
+125
°
C
ELECTRICAL CHARACTERISTICS
T j =25
°
C; unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
I R
reverse current
V R = 30 V; see Fig.3
-
-
10
nA
V R = 30 V; T j =85
°
C; see Fig.3
-
-
200
nA
r s
diode series resistance
f = 100 MHz; note 1
-
-
0.9
W
C d
diode capacitance
V R = 1 V; f = 1 MHz; see Figs 2 and 4
36.8
-
41.8 pF
V R = 28 V; f = 1 MHz; see Figs 2 and 4
2.4
-
2.75 pF
C d1V
capacitance ratio
f = 1 MHz
14.5
-
-
( )
C d28V
--------------------
(
)
Note
1. V R is the value at which C d = 12 pF.
1999 Jun 10
2
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Philips Semiconductors
Product specication
VHF variable capacitance diode
BB158
GRAPHICAL DATA
MLC266
50
handbook, full pagewidth
C d
(pF)
40
30
20
10
0
1
10 2
10
1
10
V (V)
R
f = 1 MHz; T j =25
°
C .
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
10 3
MLC816
10
3
MLC815
handbook, halfpage
handbook, halfpage
I R
(nA)
TC
d
(K - 1 )
10 2
10
4
10
10
5
10
1
10 2
0
50
100
1
10
o
T ( C)
j
V (V)
R
T j = 0 to 85 ° C.
Fig.3 Reverse current as a function of junction
temperature; maximum values.
Fig.4 Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.
1999 Jun 10
3
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Philips Semiconductors
Product specication
VHF variable capacitance diode
BB158
PACKAGE OUTLINE
handbook, full pagewidth
0.55
0.40
1.00
max
0.25
0.10
0.05
max
MBC672 - 1
A
1.35
1.15
0.40
0.25
1.8
1.6
2.7
2.3
0.2
M
A
Dimensions in mm.
The bar indicates the cathode.
Fig.5 SOD323.
DEFINITIONS
Data sheet status
Objective specication
This data sheet contains target or goal specications for product development.
Preliminary specication
This data sheet contains preliminary data; supplementary data may be published later.
Product specication
This data sheet contains nal product specications.
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 specication
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 specication.
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.
1999 Jun 10
4
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