1999 May 12
2
Philips Semiconductors
Preliminary specification
UHF variable capacitance diode
BB154
FEATURES
Excellent linearity
Excellent matching to 2% DMA
Very small plastic SMD package
C28: 2.0 pF; ratio: 9.7
Very low series resistance.
APPLICATIONS
Electronic tuning in UHF television tuners
Voltage controlled oscillators (VCO).
DESCRIPTION
The BB154 is a variable capacitance diode, fabricated in
planar technology, and encapsulated in the SOD323 very
small SMD package.
The excellent matching performance is achieved by gliding
matching and a direct matching assembly procedure.
PINNING
PIN
DESCRIPTION
1
cathode
2
anode
Fig.1 Simplified outline (SOD323) and symbol.
Marking code: PM.
Cathode indicated by a marking bar.
4 columns
k
a
MAM130
1
2
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
ELECTRICAL CHARACTERISTICS
T
j
= 25
C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
R
continuous reverse voltage
-
30
V
V
RM
peak reverse voltage
in series with a 10 k
resistor
-
35
V
I
F
continuous forward current
-
20
mA
T
stg
storage temperature
-
55
+150
C
T
j
operating junction temperature
-
55
+150
C
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 = 470 MHz; V
R
is the value at which C
d
= 9 pF
-
0.60
0.75
C
d
diode capacitance
V
R
= 1 V; f = 1 MHz; see Figs 2 and 4
18.5
-
21.25
pF
V
R
= 28 V; f = 1 MHz; see Figs 2 and 4
1.9
-
2.2
pF
capacitance ratio
f = 1 MHz
9.
9.7
11
capacitance matching
V
R
= 1 to 28 V; in a sequence of 15 diodes
(gliding)
-
-
2
C
d 1V
(
)
C
d 28V
(
)
--------------------
C
d
C
d
----------
1999 May 12
3
Philips Semiconductors
Preliminary specification
UHF variable capacitance diode
BB154
GRAPHICAL DATA
Fig.2
Diode capacitance as a function of reverse voltage; typical values.
handbook, full pagewidth
0
30
10
20
MGS355
10
-
1
1
10
2
10
VR (V)
Cd
(pF)
handbook, halfpage
100
0
10
MLC816
10
2
10
3
50
IR
(nA)
T ( C)
j
o
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.
handbook, halfpage
10
-
3
10
-
4
10
-
5
MGS356
10
-
1
1
10
10
2
TC
(K
-
1
)
reverse bias (V)
1999 May 12
4
Philips Semiconductors
Preliminary specification
UHF variable capacitance diode
BB154
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
SOD323
98-09-14
0
1
2 mm
scale
SOD323
UNIT
bp
c
D
E
Q
v
mm
0.40
0.25
+
0.05
-
0.05
0.25
0.10
0.2
1.35
1.15
1.8
1.6
A
1.1
0.8
HE
2.7
2.3
0.25
0.15
Lp
0.45
0.15
DIMENSIONS (mm are the original dimensions)
D
1
2
HE
Lp
A
E
bp
A1
Q
Note
1. The marking bar indicates the cathode.
A1
max.
Plastic surface mounted package; 2 leads
,
v
M
A
A
c
(1)
1999 May 12
5
Philips Semiconductors
Preliminary specification
UHF variable capacitance diode
BB154
DEFINITIONS
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.
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
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.
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