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BB814...
Silicon Variable Capacitance Diodes
• For FM radio tuners with extended
frequency band
• High tuning ratio at low supply voltage (car radio)
• Monolithic chip (common cathode) for perfect
dual diode tracking
• Coded capacitance groups and group matching
available
• Pb-free (RoHS compliant) package
BB814
!
,
,
Type Package Configuration LS(nH) Marking
BB814 SOT23 common cathode 1.8 SH1/2*
*For differences see next page Capacitance groups
Maximum Ratings at TA = 25°C, unless otherwise specified
Parameter Symbol Value Unit
Diode reverse voltage VR18 V
Peak reverse voltage- VRM 20
Forward current IF50 mA
Operating temperature range Top -55 ... 125 °C
Storage temperature Tst
g
-55 ... 150
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Electrical Characteristics at TA = 25°C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
DC Characteristics
Reverse current
VR = 16 V
VR = 16 V, TA = 60 °C
IR
-
-
-
-
20
200
nA
AC Characteristics
Diode capacitance1)
VR = 2 V, f = 1 MHz
VR = 8 V, f = 1 MHz
CT
43
19.1
44.75
20.8
46.5
22.7
pF
Capacitance ratio
VR = 2 V, VR = 8 V, f = 1 MHz
CT2/CT8 2.05 2.15 2.25
Capacitance matching2)
VR = 2 V, VR = 8 V, f = 1 MHz
∆CT/CT- - 3 %
Series resistance
VR = 2 V, f = 100 MHz
rS- 0.18 - Ω
Q factor
f = 100 MHz, VR = 2 V
Q- 200 -
1Capacitance groups at 2V and 8V, coded 1; 2
CT/groups 1 2
C2V min 43pF 44.5pF
C2V max 45pF 46.5pF
C8V min 19.1pF 19.75pF
C8V max 21.95pF 22.7pF
2For details please refer to Application Note 047.
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Diode capacitance CT = ƒ (VR)
f = 1MHz
10
EHD07054BB 814
C
T
R
V
-1 0
10
1
10
2
10V
0
10
20
30
40
50
60
70
pF
80
Capacitance ratio CTref/CT = ƒ (VR)
f = 1MHz
0
0
EHD07057BB 814
C
T
R
V
Tref
C
51015V20
1
2
3
4
5
6
V
ref
= 1 V
2 V
3 V
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Package SOT23
Package Outline
Foot Print
Marking Layout (Example)
Standard Packing
Reel ø180 mm = 3.000 Pieces/Reel
Reel ø330 mm = 10.000 Pieces/Reel
EH
s
BCW66
Type code
Pin 1
0.8
0.9 0.91.3
0.8 1.2
0.25
M
BC
1.9
-0.05
+0.1
0.4
±0.1
2.9
0.95
C
B
0...8˚
0.2 A
0.1 MAX.
10˚ MAX.
0.08...0.15
1.3
±0.1
10˚ MAX.
M
2.4
±0.15
±0.1
1
A
0.15 MIN.
1)
1) Lead width can be 0.6 max. in dambar area
12
3
3.15
4
2.65
2.13
0.9
8
0.2
1.15
Pin 1
Manufacturer
2005, June
Date code (YM)
2011-06-15
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BB814...
Edition 2009-11-16
Published by
Infineon Technologies AG
81726 Munich, Germany
2009 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee
of conditions or characteristics. With respect to any examples or hints given herein,
any typical values stated herein and/or any information regarding the application of
the device, Infineon Technologies hereby disclaims any and all warranties and
liabilities of any kind, including without limitation, warranties of non-infringement of
intellectual property rights of any third party.
Information
For further information on technology, delivery terms and conditions and prices,
please contact the nearest Infineon Technologies Office (<www.infineon.com>).
Warnings
Due to technical requirements, components may contain dangerous substances.
For information on the types in question, please contact the nearest Infineon
Technologies Office.
Infineon Technologies components may be used in life-support devices or systems
only with the express written approval of Infineon Technologies, if a failure of such
components can reasonably be expected to cause the failure of that life-support
device or system or to affect the safety or effectiveness of that device or system.
Life support devices or systems are intended to be implanted in the human body or
to support and/or maintain and sustain and/or protect human life. If they fail, it is
reasonable to assume that the health of the user or other persons may be
endangered.
