DATA SHEET
SMV1247-SMV1255 Series: Hyperabrupt Junction Tuning
Varactors
Applications
Low tuning voltage VCOs
High-volume commercial systems
Features
High capacitance ratio: C
0.3V
/C
4.7V
= 12 typical
Packages rated MSL1, 260
°C
per JEDEC J-STD-020
Skyworks
Green
TM
products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green
TM
, document number
SQ04–0074.
Description
The SMV1247-SMV1255 group of silicon hyperabrupt junction
varactor diodes is designed for use in Voltage Controlled
Oscillators (VCOs) with a low tuning voltage operation. This group
of varactors is characterized for capacitance and resistance over
temperature.
Table 1 describes the various packages and markings of the
SMV1247 to SMV1255 varactors.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200061U • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 18, 2016
1
DATA SHEET • SMV1247-SMV1255 VARACTORS
Table 1. Packaging and Marking
Single
SC-79
Green™
Single
SOD-323
Green™
Single
SOT-23
Common Cathode
SOT-23
Single
SOD-882
Green™
SMV1247-040LF
Marking: H
♦
SMV1247-079LF
Marking: Cathode and AH
SMV1248-079LF
Marking: Cathode and CH
SMV1248-040LF
Marking: 8
♦
SMV1249-079LF
Marking: Cathode and EH
SMV1251-079LF
Marking: Cathode and FH
SMV1249-011LF
Marking: EF
SMV1251-011LF
Marking: EH
SMV1249-040LF
Marking: K
SMV1251-040LF
Marking: EH1
SMV1253-040LF
Marking: 3
SMV1253-079LF
Marking: Cathode and
GH
SMV1253-011LF
Marking: EJ
SMV1253-004LF
Green™
Marking: EJ3
SMV1255-040LF
Marking: 4
♦
SMV1255-079LF
Marking: Cathode and HH
SMV1255-011LF
Marking: EK
SMV1255-001LF
Green™
Marking: EK1
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 0.45 nH
L
S
= 0.7 nH
L
S
= 1.5 nH
The Pb-free symbol or “LF” in the part number denotes a lead-free, RoHS-compliant package unless otherwise noted as
Green™.
Tin/lead (Sn/Pb) packaging is not
recommended for new designs.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SMV1247-SMV1255 group
of varactors are provided in Table 2. Electrical specifications are
provided in Table 3. Typical capacitance values are listed in
Table 4. Typical performance characteristics of the
SMV1247-SMV1255 varactors are illustrated in Figures 1
through 4.
The SPICE model for the SMV1247-SMV1255 varactors is shown
in Figure 5, and the associated model parameters are provided in
Table 5.
Package dimensions are shown in Figures 6 to 12 (even
numbers), and tape and reel dimensions are provided in Figures 7
to 13 (odd numbers).
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 SMV1247-SMV1255 group of 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
August 18, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200061U
DATA SHEET • SMV1247-SMV1255 VARACTORS
Table 2. SMV1247-SMV1255 Absolute Maximum Ratings
1
Parameter
Reverse voltage
Forward current
Power dissipation
Operating temperature
Storage temperature
Electrostatic discharge:
Charged Device Model (CDM), Class 4
Human Body Model (HBM), Class 1A
Machine Model (MM), Class A
at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
Symbol
V
R
I
F
P
DIS
T
OP
T
STG
ESD
Minimum
Maximum
15
20
250
Units
V
mA
mW
C
C
–55
–55
+125
+150
1000
250
<50
V
V
V
1 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
ESD HANDLING:
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 when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. SMV1247-SMV1255 Electrical Specifications
1
(T
OP
= 25
C,
Unless Otherwise Noted)
Part Number
C
T
@ 0.3 V
(pF)
Min
SMV1247
SMV1248
SMV1249
SMV1251
SMV1253
SMV1255
6.5
15.0
28.0
38.0
48.0
58.0
Typ
7
17
31
42
53
64
Typ
0.7
1.5
2.6
3.4
4.3
5.2
C
T
@ 4.7 V
(pF)
Max
0.78
1.70
2.80
3.80
4.80
5.80
C
T
@1V
(pF)
Typ
4.4
12.3
18.2
28.1
37.0
43.3
C
T
@3V
(pF)
Typ
0.95
2.60
3.40
5.80
7.80
8.50
C
T
@ 0.3 V
C
T
@ 4.7 V
(Ratio)
Min
9.5
10.8
11.0
11.0
11.0
11.0
Typ
10.0
12.0
12.1
12.2
12.3
12.3
C
T
@ 1 V
C
T
@ 3 V
(Ratio)
Typ
4.6
4.7
5.3
4.8
4.7
5.1
R
S
@ 3 V,
500 MHz
(Ω)
Max
6.0
3.3
2.2
1.6
1.4
1.3
Q@3
V,
50 MHz
Typ
1500
700
600
400
350
350
1 Performance is guaranteed only under the conditions listed in this table.
Reverse voltage V
R
(I
R
= 10
μA)
= 15 V minimum
Reverse current I
R
(V
R
= 12 V) = 20 nA maximum
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200061U • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 18, 2016
3
DATA SHEET • SMV1247-SMV1255 VARACTORS
Table 4. Capacitance vs Reverse Voltage
V
R
(V)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
C
T
(pF)
SMV1247
8.86
6.17
4.37
2.96
1.88
1.22
0.95
0.83
0.77
0.73
0.70
0.68
0.67
0.66
0.65
0.64
0.64
SMV1248
22.62
16.32
12.33
9.12
6.27
3.93
2.57
1.95
1.71
1.59
1.49
1.44
1.40
1.36
1.33
1.31
1.30
SMV1249
37.35
25.88
18.18
12.08
7.27
4.44
3.40
2.96
2.72
2.51
2.38
2.30
2.24
2.19
2.14
2.09
2.03
SMV1251
53.65
38.23
28.09
20.13
13.55
8.60
5.78
4.57
3.95
3.58
3.33
3.16
3.03
2.94
2.88
2.83
2.79
SMV1253
69.32
50.23
37.07
27.57
19.37
12.39
7.77
5.77
4.86
4.34
4.01
3.78
3.62
3.50
3.41
3.34
3.28
SMV1255
81.21
58.28
43.27
31.49
21.50
13.40
8.51
6.51
5.58
5.07
4.76
4.58
4.46
4.39
4.33
4.29
4.26
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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August 18, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200061U
DATA SHEET • SMV1247-SMV1255 VARACTORS
Typical Performance Characteristics
10
100.0
SMV1255
SMV1253
SMV1247
Capacitance (pF)
10.0
SMV1251
SMV1249
Series
Resistance (Ω)
8
6
4
SMV1251
SMV1248
SMV1249
200061T-002
1.0
SMV1248
SMV1247
200061T-001
2
SMV1255
SMV1253
0
0
1
2
3
4
5
0.1
0
2.0
4.0
6.0
8.0
Reverse Voltage (V)
Reverse Voltage (V)
Figure 1. Capacitance vs Reverse Voltage
Figure 2. Series Resistance vs Reverse Voltage @ 500 MHz
+3
+15
+10
Percentage
Change
(%)
Percentage
Change
(%)
+2
+1
0
–1
–2
–3
–40
–20
0
V
R
= 1 V
+5
0
–5
–10
–15
–20
–25
–50
–25
0
+25
+50
+75
200061T-004
V
R
= 4 V
200061T-003
+20
+40
+60
+80
+100
Temperature (°C)
Figure 3. Relative Capacitance Change vs Temperature
Temperature (°C)
Figure 4. Relative Series Resistance Change vs Temperature
@ 500 MHz
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200061U • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 18, 2016
5
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