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UHF variable capacitance diode
DISCRETE SEMICONDUCTORS
DATA SHEET
alfpage
M3D050
BB405B
UHF variable capacitance diode
Product specification
Supersedes data of April 1992
File under Discrete Semiconductors, SC01
1996 May 03
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Philips Semiconductors
Product specification
UHF variable capacitance diode
BB405B
FEATURES
·
Excellent linearity
·
Matched to 3%
·
Hermetically sealed leaded glass
SOD68 (DO-34) package
handbook, halfpage
k
a
·
C28: 2 pF; ratio: 8.3
MAM159
·
Low series resistance.
Cathode side indicated by a white band on a black body.
APPLICATIONS
Fig.1 Simplified outline (SOD68; DO34) and symbol.
·
Electronic tuning in UHF television
tuners
·
VCO.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
DESCRIPTION
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
The BB405B is a variable
capacitance diode, fabricated in
planar technology, and encapsulated
in the hermetically sealed leaded
glass SOD68 (DO-34) package.
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
+100
°
C
ELECTRICAL CHARACTERISTICS
T j =25
°
C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
I R
reverse current
V R = 28 V; see Fig.3
-
-
10
nA
V R = 28 V; T j =85
°
C; see Fig.3
-
-
200
nA
r s
diode series resistance
f = 470 MHz; note 1
-
-
0.75
W
C d
diode capacitance
V R = 1 V; f = 1 MHz; see Figs 2 and 4
-
-
18
pF
V R = 3 V; f = 1 MHz; see Figs 2 and 4
-
11
-
pF
V R = 28 V; f = 1 MHz; see Figs 2 and 4
1.8
-
2.2
pF
C d1V
capacitance ratio
f = 1 MHz
7.6
-
-
( )
C d28V
--------------------
(
)
D C d
C d
capacitance matching
V R = 0.5 to 28 V
-
-
3
%
----------
Note
1. V R is the value at which C d = 9 pF.
1996 May 03
2
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Philips Semiconductors
Product specification
UHF variable capacitance diode
BB405B
GRAPHICAL DATA
MBE874
handbook, full pagewidth
C d
(pF)
16
12
8
4
0
10 - 1
10 2
1
10
V R (V)
f = 1 MHz; T j =25 ° C .
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
MLC816
MLC815
3
10 3
10
handbook, halfpage
handbook, halfpage
I R
(nA)
TC
d
(K - 1 )
10 2
10
4
10
10
5
10
1
10 2
1
10
0
50
100
o
V (V)
R
T ( C)
j
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.
1996 May 03
3
20
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Philips Semiconductors
Product specification
UHF variable capacitance diode
BB405B
PACKAGE OUTLINE
handbook, full pagewidth
0.55
max
1.6
max
25.4 min
3.04
max
25.4 min
MSA212 - 1
Dimensions in mm.
Fig.5 SOD68 (DO-34).
DEFINITIONS
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.
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
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