200066L • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 7, 2015
1
DATA SHEET • SMV1281 SERIES VARACTORS
Electrical and Mechanical Specifications
The absolute maximum ratings of the SMV1281 varactors are
provided in Table 2. Electrical specifications are provided in
Table 3. Typical capacitance values are listed in Table 4. Typical
capacitance vs reverse voltage performance for the SMV1281
varactors is illustrated in Figure 1.
The SPICE model for the SMV1281 varactor series is shown in
Figure 2 and the associated model parameters are provided in
Table 5.
Package dimensions are shown in Figures 3 and 5, and tape and
reel drawings are provided in Figures 4 and 6.
Package and Handling Information
Instructions on the shipping container label regarding exposure to
moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The SMV1281 varactors are rated to Moisture Sensitivity Level 1
(MSL1) at 260
C.
They can be used for lead or lead-free
soldering. For additional information, refer to the Skyworks
Application Note,
Solder Reflow Information,
document number
200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Table 2. SMV1281 Series Absolute Maximum Ratings
Parameter
Reverse voltage
Forward current
Power dissipation
Operating temperature
Storage temperature
Electrostatic discharge:
Charged Device Model (CDM), Class 4
ESD Human Body Model (HBM), Class 3A
Man-Machine (MM) Model, Class C
Note:
Symbol
V
R
I
F
P
DIS
T
OP
T
STG
ESD
Minimum
Maximum
24
20
250
Units
V
mA
mW
C
C
–55
–55
+125
+150
2000
4000
400
V
V
V
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION:
Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
Table 3. SMV1281 Series Electrical Specifications (Note 1)
(T
OP
= 25
C,
Unless Otherwise Noted)
Parameter
Reverse current
Capacitance
Capacitance ratio
Resistance
Breakdown voltage
I
R
C
T
C
TR
R
S
V
BR
Symbol
Test Condition
V
R
= 20 V
V
R
= 1 V
V
R
= 20 V
V
R
= 1 V/20 V
f = 500 MHz, V
R
= 1 V
I
R
= 10
μA
24
7.8
0.6
8.6
0.7
12
1.7
Min
Typical
Max
20
9.5
0.8
Units
nA
pF
pF
–
Ω
V
Note 1:
Performance is guaranteed only under the conditions listed in this table.
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