Philips Semiconductors
Product specification
VHF variable capacitance diode
FEATURES
•
Ultra high ratio
•
Excellent matching to 2% DMA (Direct Matching
Assembly)
•
Very small plastic SMD package
•
C28: 2.6 pF; ratio 40.
APPLICATIONS
•
Electronic tuning in television tuners with extended VHF
range
•
Voltage controlled oscillators (VCO).
DESCRIPTION
The BB147 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.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
BB147
−
DESCRIPTION
plastic surface mounted package; 2 leads
Marking code:
P7.
The marking bar indicates the cathode.
1
2
BB147
PINNING
PIN
1
2
cathode
anode
DESCRIPTION
sym008
Top view
Fig.1
Simplified outline (SOD323; SC-76) and
symbol.
VERSION
SOD323
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
V
R
I
F
T
stg
T
j
continuous reverse voltage
continuous forward current
storage temperature
operating junction temperature
PARAMETER
MIN.
−
−
−55
−55
MAX.
30
20
+150
+125
UNIT
V
mA
°C
°C
2004 Mar 30
2
Philips Semiconductors
Product specification
VHF variable capacitance diode
ELECTRICAL CHARACTERISTICS
T
j
= 25
°C
unless otherwise specified.
SYMBOL
I
R
r
s
C
d
C
d
(
0.5V
)
-------------------
-
C
d
(
28V
)
∆
C
d
---------
-
C
d
PARAMETER
reverse current
diode series resistance
diode capacitance
capacitance ratio
CONDITIONS
V
R
= 30 V; see Fig.3
V
R
= 30 V; T
j
= 85
°C;
see Fig.3
f = 100 MHz; C
d
= 30 pF
V
R
= 0.5 V; f = 1 MHz; see Figs 2 and 4
V
R
= 28 V; f = 1 MHz; see Figs 2 and 4
f = 1 MHz
−
−
−
92
2.4
35
MIN.
BB147
MAX.
20
200
2.8
112
2.8
43
UNIT
nA
nA
Ω
pF
pF
capacitance matching
V
R
= 0.5 to 28 V; in a sequence of 8 diodes
(gliding)
−
2
%
2004 Mar 30
3
Philips Semiconductors
Product specification
VHF variable capacitance diode
GRAPHICAL DATA
BB147
handbook, full pagewidth
100
MBH585
Cd
(pF)
80
60
40
20
0
10
−1
f = 1 MHz; T
j
= 25
°C
.
1
10
VR (V)
10
2
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
handbook, halfpage
10
3
MBH586
10
3
handbook, halfpage
MLC815
IR
(nA)
(K
−1
)
TC d
10
2
10
4
10
0
50
Tj (°C)
100
10
5
10
1
1
10
VR (V)
10
2
T
j
= 0
°C
to 85
°C.
Fig.4
Fig.3
Reverse current as a function of junction
temperature; maximum values.
Temperature coefficient of diode
capacitance as a function of reverse
voltage; typical values.
2004 Mar 30
4
Philips Semiconductors
Product specification
VHF variable capacitance diode
PACKAGE OUTLINE
Plastic surface mounted package; 2 leads
BB147
SOD323
D
A
E
X
H
D
v
M
A
Q
1
2
b
p
A
A
1
(1)
c
L
p
detail X
0
1
scale
2 mm
DIMENSIONS (mm are the original dimensions)
UNIT
mm
A
1.1
0.8
A
1
max
0.05
b
p
0.40
0.25
c
0.25
0.10
D
1.8
1.6
E
1.35
1.15
H
D
2.7
2.3
L
p
0.45
0.15
Q
0.25
0.15
v
0.2
Note
1. The marking bar indicates the cathode
OUTLINE
VERSION
SOD323
REFERENCES
IEC
JEDEC
JEITA
SC-76
EUROPEAN
PROJECTION
ISSUE DATE
99-09-13
03-12-17
2004 Mar 30
5
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