VISHAY
BB814
Document Number 85555
Rev. 1.6, 09-Jul-04
Vishay Semiconductors
www.vishay.com
1
18108
12
3
Dual Varicap Diode
Features
• Silicon Epitaxial Planar Diode
• Common cathode
Applications
Tuning of separate resonant circuits,
push-pull circuits in FM range,
especiall y for car radios
Mechanical Da ta
Case: SOT-23 Plastic case
Weight: approx. 8.1 mg
Packaging Codes/Options:
GS18 / 10 k per 13" reel (8 mm tape), 10 k/box
GS08 / 3 k per 7" reel (8 mm tape), 15 k/box
Parts Table
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Thermal Characteristics
Tamb = 25 °C, unless otherwise specified
Part Type differentiation Ordering code Remarks
BB814 VRRM = 20 V, CD 43-46, 5 pF BB814-GS18 or BB814-GS08 Tape and Reel
BB814-1 VRRM = 20 V, CD 43-45, 5 pF BB814-1-GS18 or BB814-1-GS08 Tape and Reel
BB814-2 VRRM = 20 V, CD 44.5-46, 5 pF BB814-2-GS18 or BB814-2-GS08 Tape and Reel
Parameter Test condition Symbol Value Unit
Repetitive peak reverse volt age VRRM 20 V
Reverse voltage VR18 V
Forw ard current IF50 mA
Parameter Test condition Symbol Value Unit
Junction temperature Tj125 °C
Storage temperature range Tstg - 55 to + 150 °C
www.vishay.com
2Document Number 85555
Rev. 1.6, 09-Jul-04
VISHAY
BB814
Vishay Semiconductors
Electrical Characteristics
Tamb = 25 °C, unless otherwise specified
1) In the reverse voltage range of VR = (2 to 8 V) for 4 diodes taped in sequence the max. deviation is 3 %.
Package Di mens ions in mm (Inches)
Parameter Test condition Part Symbol Min Typ. Max Unit
Reverse current VR = 16 V IR20 nA
VR = 16 V, Tj = 60 °C IR200 nA
Diode capacitance 1)VR = 2 V BB814-1 CD43 45 pF
Diode capacitance BB814-2 CD44.5 46.5 pF
VR = 8 V BB814-1 CD19.1 21.95 pF
BB814-2 CD19.75 22.70 pF
Capacitance ratio VR = 2 V, 8 V, f = 1 MHz CD2/ C D8 2.05 2.25
Series resistance CD = 38 pF, f = 100 MHz rs0.5 Ω
2.0 (0.079)
0.9 (0.035)
0.95 (0.037)0.95 (0.037)
0.52 (0.020)
12
3
17418
2.8 (.110)
3.1 (.122)
0.4 (.016)
0.95 (.037)0.95 (.037)
0.1 (.004) max.
1.20(.047)
1.43 (.056)
0.4 (.016)0.4 (.016)
0.098 (.005)
0.175 (.007)
0.95 (.037)
1.15 (.045)
2.35 (.092)
2.6 (.102)
ISO Method E
Mounting Pad Layout
VISHAY
BB814
Document Number 85555
Rev. 1.6, 09-Jul-04
Vishay Semiconductors
www.vishay.com
3
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and
operatingsystems with respect to their impact on the health and safety of our employees and the public, as
well as their impact on the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are
known as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs
and forbid their use within the next ten years. Various national and international initiatives are pressing for an
earlier ban on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the
use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments
respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Prot ection Agency (EPA) in the U SA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to impr ove te chnical design
and may do so without further notic e.
Parameters can vary in different applications. All operating parameters must be validated for each
customer application by the customer. Should the buyer use Vishay Semiconductors products for any
unintended or unauthorized application, the buyer shall indemnify Vishay Semiconductors against all
claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal
damage, injury or death associated with such unintended or unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
