UTC BB178L-CC2-R Vhf variable capacitance diode Datasheet

UNISONIC TECHNOLOGIES CO., LTD
BB178
Preliminary
DIODE
VHF VARIABLE CAPACITANCE
DIODE
„
DESCRIPTION
The UTC BB178 is a planar technology variable capacitance
diode providing the designers excellent matching performance,
ultra-low series resistance and great linearity.
The UTC BB178 is suitable for VCO (Voltage Controlled
Oscillators) and Electronic tuning in VHF (Very High Frequency)
tuners.
„
2
1
SOD-523
FEATURES
* Excellent matching to 2% DMA
* Ultra low series resistance.
* Great linearity
* C28: 2.6 pF; ratio: 15
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
BB178L-CC2-R
BB178G-CC2-R
Note: Pin Assignment: A: Anode, K: Cathode
„
Package
SOD-523
Pin Assignment
1
2
A
K
Packing
Tape Reel
MARKING
78
G: Halogen Free
L : Lead Free
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Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R601-032.a
BB178
„
Preliminary
DIODE
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Continuous Reverse Voltage
VR
32
V
Peak Reverse Voltage
In series with a 10 kΩ resistor
VRM
35
V
Continuous Forward Current
IF
20
mA
Storage Temperature
TSTG
-40~+150
°C
Operating Junction Temperature
TJ
-40~+125
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
„
ELECTRICAL CHARACTERISTICS (TJ =25°C unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
VR = 30 V
10
nA
VR = 30 V, TJ=85 °C
200 nA
f = 100 MHz, VR is the value at
0.65 0.8
Ω
which Cd=30pF
VR = 1 V, f = 1 MHz
34.65
42.35 pF
VR = 28 V, f = 1 MHz
2.361
2.754 pF
Reverse Current
IR
Diode Series Resistance
rS
Diode Capacitance
Cd
Capacitance Ratio
Cd(1V)
Cd(2V)
f = 1 MHz
Capacitance Ratio
Cd(1V)
Cd(28V)
f = 1 MHz
Capacitance Ratio
Cd(25V)
Cd(28V)
f = 1 MHz
Capacitance Matching
ΔCd
Cd
VR = 1~28 V, in a sequence of
15 diodes (gliding)
1.3
13.5
1.08
2
%
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R601-032.a
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